Molecular sieve purifier ASU advantages of using bunk beds

Bunk bed molecular sieve oxygen in the air inlet means purification device, first install a certain quantity of active alumina, which coupled with a layer of zeolite loaded. The molecular sieve process air purifier is saturated with moisture. MV small oxygen in air pressure into the molecular sieve purifier purifier temperature of 30 ℃, working air moisture content of 30.3g / m3; large full low pressure molecular sieve purification process, the temperature of the purified air into the general design It is 8 ~ 15 ℃, if the air temperature is 10 ℃, then one of the saturated water content of 9.35g / m3. Purifier first adsorption moisture in the air, water adsorption, is bound to affect the adsorption of carbon dioxide molecules.

5A molecular sieves and 13X molecular sieves have what characteristics

5A molecular sieve is a calcium aluminosilicate. Uniform pore size of about 5 × 10-7mm, a bulk density of 700 ~ 800kg / m3, a specific surface area of 750 ~ 800m2 / g, a porosity of 47%, the mechanical strength of greater than 95%, the water absorption capacity of about 21.5% of carbon dioxide adsorption capacity of 1.5%, while the adsorption of water, carbon dioxide, acetylene and other hydrocarbons have a total adsorption. 13X molecular sieve is a sodium aluminosilicate, uniform pore size of about 10 × 10-7mm, a bulk density of 600 ~ 700kg / m3, a specific surface area 8001000m2 / g, a porosity of 50%, the mechanical strength of greater than 90%, of moisture adsorption capacity of about 28.5%, carbon dioxide adsorption capacity of 2.5%, while the adsorption of water, carbon dioxide, acetylene and other hydrocarbons also having a total adsorption. Compared two adsorbents, adsorption performance is better than 5A zeolite 13X molecular sieve. However, zeolite 13X somewhat less mechanical strength and abrasion resistance, and the manufacturing process is more complicated, and therefore higher prices.

Application of Zeolite 13X

13X molecular sieve pore size 10A, 10A adsorption greater than 3.64A less than any molecule, can be used to co-catalyst carrier,co-adsorption of water and carbon dioxide, water and hydrogen sulfide gas co-adsorption, mainly used in medicine and compressed air drying systems, depending on the there are different varieties of specialty applications. It can be an air separation plant in gas purification, removal of water and carbon dioxide, liquid hydrocarbons, liquefied petroleum gas, natural gas drying and desulphurization.

Molecular sieve desiccant

Molecular sieve desiccant, which is a synthetic and water molecules have a strong adsorptive desiccant molecular sieve products, crystalline aluminosilicate compound, which has a regular crystal structure and uniform pore pore size of the molecular order of magnitude,it only allows a diameter smaller than the pore molecules into, and therefore a mixture of molecules can be screened by size, so called molecular sieves. Which pore size can be controlled by different process, in addition to adsorb moisture, it can adsorb other gases. At temperatures above 230 ℃, the water molecules can still accommodate good.

Molecular sieve regeneration temperature

ASU conventional 13X molecular sieves general use above 700 degrees will produce degeneration, but his regeneration temperature of 140 degrees can be, that is, blowing cold temperature can reach this peak, but we do ASU around 180 degrees heating gas for heating to him, in order to ensure the peak cold blow to ensure complete regeneration. The temperature there is sufficient, at higher is a waste of energy. At the end of the cold blowing temperature should be at room temperature, below 30 degrees, or molecular sieve adsorption capacity is not restored to the best. Because the lower temperature molecular sieve adsorption capacity of the stronger. Whether complete regeneration of molecular sieves flag is blowing cold blowing cold peak, cold blowing peaking at 140 degrees can be considered very thoroughly heated, the next is to ensure that the outlet temperature of the cold end of the blow.

Zeolite knowledge: uses and zeolite molecular sieves with unique properties

Feature uses zeolite 13x molecular sieves it is widely used in petrochemical, gas, refrigeration, food and other fields. 
The main applications are: 
1, the drying activated alumina and liquids; 
2, the purification of gases and liquids; 
3, separating gas and liquid; 
4, hydrocracking, catalytic cracking and isomerization catalyst; 
5, detergent additives and water softener
Zeolite has unique properties:
1, water, gas and liquid reversible adsorption 2, 3 cation exchange properties, pore zeolite has a very high internal surface area suitable for use as a molecular sieve for this depth drying, selective adsorption and catalysis, molecular sieves and other adsorbents Comparison prominent features: 
1, 2 very high adsorption capacity, selective adsorption and separation of 3, 4 catalytic properties, ion exchange characteristics

Zeolite relative term: carbon molecular sieve Interpretation

Carbon molecular sieve is a novel sorbent developed in the 1970s, and is an excellent material non-polar carbon, nitrogen carbon molecular sieve (Carbon 5a zeolite molecular sieves Sieves, CMS) for the separation of air enriched in nitrogen at room temperature using Low nitrogen technology, less investment costs, production of nitrogen faster than conventional high-pressure nitrogen cryogenic process has, nitrogen, and low cost. Therefore, it is currently the preferred engineering PSA (the PSA) nitrogen-enriched air separation adsorbents, such as nitrogen in the chemical industry, oil and gas industry, electronic industry, food industry, coal industry, pharmaceutical industry, the cable industry, metal heat treatment, transportation and storage and other aspects of a wide range of applications.
In the 1950s, along with the tide of the industrial revolution, more and more widespread application of carbon materials, activated zeolite powder including activated carbon applications
PSA nitrogen with carbon molecular sieve

Zeolite knowledge: a comprehensive understanding of the molecular sieve oxygen plant

molecular sieve drying commonly used pressurized oxygen adsorption and desorption pressure (HP) method, carried out by two adsorption towers were the same cycle, in order to achieve continuous supply. System-wide automatic control by the SCM.
Molecular sieve type oxygen free home-based molecular sieve oxygen concentrator, medical zeolite gas machine
Molecular sieve type oxygen flow to the working principle of the two towers. After feed air pressurized by the compressor, through the air pretreatment means to remove oil, dust and other solid impurities and water, and cooled to room temperature, treated by the compressed air through the intake valve into the adsorber containing a molecular sieve, the air nitrogen, carbon dioxide is adsorbed effluent gas is the high purity oxygen, Tada when adsorbed to a certain saturation, the intake valve closed, the flush valve opens, the adsorption tower into the rinse stage, after the flush valve is closed, the valve opens desorption into the desorption regeneration phase, so that a complete cycle.
The main technical parameters of the molecular sieve oxysiv sieve type oxygen machine

High-silica zeolite ZSM-type zeolite

High-silica zeolite ZSM-type molecular sieves have a series, widely used for ZSM-5 zeolite , with the same structure of ZSM-8 and ZSM-11 zeolite; another group of ZSM-21, ZSM-35 and ZSM-38, etc. . 5a zeolite powder zeolite is often called high-silica zeolite molecular sieve Si / AI ratio can be as high as 50 or more, ZSM-8 up to 100, this group also showed a molecular sieve hydrophobic properties.
Their structural unit and mordenite similar, there are a pair of five-membered ring composed of non-cage-like cavity, only channel. ZSM-5 zeolite has two sets of cross-channel, one for straight and the other perpendicular to whom font, by ten yuan ring. Channel into an oval, its window diameter (0.55-0.60) nm. Belonging to the family of high-silica zeolite also all-silicon type Luoyang Jianlong Chemical Industrial Co., Ltd., ZSM-5 structure, like, Silicalite-2 with the same ZSM-11.

Advantages of molecular sieves

According to the size and shape of the molecular sieves 3a adsorption of different choices, that is, only those molecules smaller than the molecular sieve adsorption pore. 
For small polar molecular sieve manufacturers and unsaturated molecules having selective adsorption properties, the greater the polarity, the higher the degree of unsaturation, the stronger its selective adsorption. 
With a strong water absorption. Even higher at lower temperatures, a larger space velocity and water content, there is rather high water absorption capacity.

High-silica zeolite ZSM-type zeolite

High-silica zeolite ZSM-type molecular sieves have a series, widely used for ZSM-5 zeolite , with the same structure of ZSM-8 and ZSM-11 zeolite; another group of ZSM-21, ZSM-35 and ZSM-38, etc. . molecular sieve beads zeolite is often called high-silica zeolite molecular sieve Si / AI ratio can be as high as 50 or more, ZSM-8 up to 100, this group also showed a molecular sieve hydrophobic properties.
Their structural unit and molecular sieve 4a similar, there are a pair of five-membered ring composed of non-cage-like cavity, only channel. ZSM-5 zeolite has two sets of cross-channel, one for straight and the other perpendicular to whom font, by ten yuan ring. Channel into an oval, its window diameter (0.55-0.60) nm. Belonging to the family of high-silica zeolite also all-silicon type Silicalite-1, ZSM-5 structure, like, Silicalite-2 with the same ZSM-11.

Zeolite transitional form of selective restriction

Some reaction, reactant molecules and their zeolite desiccant products are not subject to restrictions window catalyst pore diffusion of knowledge within the required holes or due to a larger cage cavity space to form the corresponding transition states, or is restricted so that the reaction can not be ; on the contrary, some of the reactions yo ah just a small space of the transition state would not accept that kind of restriction, which constitutes a selective type catalytic transition state restrictions.
ZSM-5 zeolite used in this transition state selectivity of catalytic reactions, the biggest advantage is to prevent coking. Because ZSM-5 molecular sieve sylobead having a smaller than the other bore, is not conducive to Jiaosheng Cheng precursor polymerization reaction requires a large transition state formed. Thus has a longer life than other molecular sieves and amorphous catalyst.

Several patents of ZSM-5 Zeolite

Our patents on a wide range of molecular sieve, which on ZSM-5 zeolite patent projects is endless.  Today, manufacturers of ZSM-5 5a molecular sieve Tech Shandong 齐鲁华 letter on to introduce several patents on ZSM-5 Zeolite.
 Using the direct method of molecular sieve 5a catalyst developed a number of new patents:
 (1) NKC-01: After the catalyst was replaced by a boron trifluoride catalyst in the synthesis of ethylene glycol ether production, yield increased by 20%, the main raw materials fell 21 percent, reduce the cost of 2,000 yuan per ton of product, and the elimination of boron trifluoride corrosion and contamination of the equipment on the environment.  State Board of Education Science and Technology Progress Award.

 (2) NKC-03 A: dehydration of ethanol to ethylene catalyst than conventional alumina catalyst low reaction temperature 100 ° C, 1-2 times higher airspeed, save energy, improve production efficiency.  National Invention Award Sidengjiang.
 (3) NKC-8912 catalyst ethylbenzene, ethanol synthesis for two ethylbenzene production, allows for two ethylbenzene selectivity of 95-98% dependent on imports for the production of long-xylene separation of adsorbent started a catalytic Synthesis of new technology, so that our "right B diphenyl," the production will achieve localization.  This catalyst has been adopted by the National Natural Science Foundation, Department of Chemistry, chaired identification.

Japan CDS-1 successfully developed a new type of molecular sieve

Recently, Xiao Bian understand a message from the Japanese National Institute of Advanced Industrial Science and Technology (AIST) synthesis of a novel molecular sieve ethanol dehydration CDS-1 has been successfully developed.
 It was prepared by a layered silicate, has a unique structure - by 13x molecular sieves stacking blocks.  According to the institute, said the film chemistry lab, CDS-1 between its silicate layers has many pores.  Research center will work processing CDS-1 into the film, mainly used for the separation agent catalyst.  Typically, the use of a structure-directing agent (Structure-directing agent) complex can be formed by hydrothermal synthesis of nanosized pore size.  These pores may be at about 420 ℃, using condensation polymerization method easily and economically be bonded together to form a silicate layer.

 This made one molecular structure but retain the layered silicate framework is without precedent.  Molecular sieves containing silicon, aluminum and oxygen atoms.  When the silica-alumina composite containing a high proportion of silicon, called a high-silica zeolite.  This kind of molecular sieve is hydrophobic and high temperature.  AIST has a molecular sieve such intellectual property rights, the Department of silicon and oxygen by a silicate system.  It is resistant to high temperature above 800 ℃ and chemical resistance.  When immersed in a solution of an acid or a base, and still retains its original structure.

Molecular sieve Introduction

Molecular sieve is a cubic lattice aluminosilicate compound having. Molecular sieve has a uniform porous structure, the diameter of its pores of uniform size, these cavities can adsorb molecules smaller diameter than the bore to the interior, and the polarity molecular sieve separation of the molecules and the preferential adsorption of the unsaturated molecules having a capacity, which can very different degree, a different degree of saturation, and the boiling point of different molecular size to separate different molecules, which has the effect of "screening" of molecules, so called molecular sieves 13x molecular sieves. Since the molecular sieves have a high adsorption capacity, high thermal stability, etc. The other adsorbents that are not so widely used to obtain the molecular sieve.

oxygen therapy and oxygen care has an irreplaceable role and broad prospects for development

Appropriate oxygen, there microcirculation status, reducing the load of the respiratory system in order to maintain a certain oxygen partial pressure of alveolar gas necessary to reduce the amount 3a zeolite molecular sieves  of load in order to maintain cardiac arterial partial pressure of oxygen required for a certain effect. Thus in clinical medicine, preventive medicine, first aid medicine, geriatrics, activated zeolite powder rehabilitation and health care and medicine,zeolite desiccant oxygen therapy and oxygen care has an irreplaceable role and broad prospects for development.

the oxygen demand for small-scale, but also the use of PSA oxygen, including PSA and VPSA oxygen molecular sieve adsorbent oxygen process, working principle is the use of highly efficient nitrogen-oxygen separation adsorbent nitrogen adsorption certain time desorption regeneration, cyclical operation, the purpose of the two towers or more adsorption towers in parallel, to achieve continuous production of oxygen.

China's aluminum industry is developing very rapidly

China's aluminum industry is developing very rapidly, the demand for aluminum 

is growing. According to official forecasts, 2O00, China's aluminum production will reach 1.8 million tons. regeneration of molecular sieves This requires to develop alumina industry. Since 1954, Shandong Aluminum production, there Zhengzhou Aluminum Plant, Guizhou Aluminum Plant, Shanxi Aluminum Plant put into operation. Alumina production capacity of 1.2 million tons or more. In order to meet the needs of the development of the aluminum industry are planning to build a peaceful grace molecular sieves fruit Zhongzhou Aluminum smelter; and expansion of old plants need to gradually form an alumina base in Central China, Northwest, Southwest aluminum base for a more reasonable layout. Alumina production and species will continue to increase. According to the characteristics and production status of bauxite resources, the total recovery of alumina and alkali zeochem molecular sieves  consumption compared with similar foreign factories, reached the advanced level. And most economical way to recover from the mother liquor circulation gallium; successful use of the alumina production waste - red mud production of cement, from the surface to improve the overall efficiency of alumina production.

A desiccant to absorb moisture from the atmosphere

A desiccant to absorb moisture from the atmosphere, in addition to a liquid, its drying principle is physically adsorbed water molecules in the structure itself, or the absorption of water molecules through chemical means, and changes its chemical structure, into another natural gas separation substances. Common desiccants are lime desiccant chemisorption, magnesium chloride, calcium chloride, phosphorous pentoxide, or soda lime, silicic acid, which are chemically absorb water molecules natural gas dehydration and change its chemical structure into another material.

Moisture control is the product yield is closely related to food, in the appropriate temperature and humidity, food, bacteria and mold will be breeding at an alarming rate, molecular sieve natural gas dehydration  so that food spoilage, resulting in moisture and color changed. Electronic products due to high humidity will cause the metal oxide, adversely. The desiccant is used in order to avoid the occurrence of excess water caused by defective products.

XH molecular sieve

Moisture control is the product yield is closely related to food, in the appropriate temperature and zeolite desiccant humidity, food, bacteria and mold will be breeding at an alarming rate, so that food spoilage, resulting in moisture and color changed. Electronic products due to high humidity will cause the metal oxide, adversely. XH molecular sieve  The desiccant is used in order to avoid the occurrence of excess water caused by defective products.
Molecular sieve desiccant features:
① In the ultra-low humidity conditions, will still be able to absorb a lot of water vapor in the environment, activated alumina  to effectively control the ambient humidity;

② The absorbent fast, in a very short period of time to absorb a lot of water vapor.
Medicine and health products, biological reagents, food industry-specific desiccant. Special desiccant characteristics: high hygiene requirements, packaging materials by the U.S. FDA demonstration, product compact and efficient, environmentally delicate, better compatibility and chemical stability.

zeochem molecular sieves

Molecular sieve desiccant, which is a synthetic and water molecules have a strong adsorptive desiccant products, crystalline aluminosilicate compound,which has a regular crystal structure and uniform pore pore size of themolecular order of magnitude, it only allows a diameter smaller than the pore molecules into, and therefore a mixture of molecules can be screened by size, so called molecular sieves. Which pore size can be controlled by different process, in addition to adsorb moisture, it can adsorb other gases. At temperatures above 230 ℃, zeochem molecular sieves  the water molecules can still accommodate good. zeolit desiccant Medicine and health products, biological reagents, food industry-specific desiccant. Special desiccant characteristics: high hygiene requirements, packaging materials by the U.S. FDA demonstration, product compact and efficient, environmentally delicate, better compatibility and chemical stability.

Desiccant applied to prevent the equipment, instruments, electrical equipment, pharmaceuticals, food, textiles and other various packaging items damp, at sea en route desiccant is also widely used, because the goods during transport often large and moisture deterioration due to zeolite 13x temperature, dry agents can effectively dehumidification moisture, so that the quality of the goods are protected.
A desiccant to absorb moisture from the atmosphere, in addition to a liquid, its drying principle is physically adsorbed water molecules in the structure itself, or the absorption of water molecules activated zeolite powder 5a  through chemical means, and changes its chemical structure, into another substances.
Common desiccants are lime desiccant chemisorption, magnesium chloride, calcium chloride, phosphorous pentoxide, or soda lime, silicic acid, which are chemically absorb water molecules and change its chemical structure into another material.

Some catalytic behavior of molecular sieve dehydration in ethanol amination reaction

Aliphatic amines is an important raw material of pesticides, pharmaceuticals, dyes and other industries. Its main synthetic methods ammoniated alcohol dehydration and alcohol dehydrogenation amination, an AI:. O, as a catalyst since production has since been put in since the early 1960s. Its alcohol conversion rate is acceptable, but a less selective amine. Binary and ternary metal oxide catalytic systems studied many reports ['', due to poor performance, the industry .zSM a selective 5 zeolite came after an attempt to take advantage of its role in improving the shape-selective primary amine has not been adopted Research work has been reported ['a 6'. Selective dehydration of methanol amination reaction of methylamine is indeed improved. For alcohol-containing C-C bond, 3a zeolite molecular sieves dehydration amination reaction catalyst as a research work has not yet commenced. This article focuses on the study of various zeolite acidity, pore structure on ethanol dehydration amination. Got some interesting results. Experiment 1 reagent and preparing zeolite powder original NaY (Wenzhou Chemical), NaM (Nanjing plant 5a zeolite molecular sieves  and NaZSM a 5 (Nankai Chemical) were treated with 10% NH; NO. Solution, 1 mol / L and 0.1 mol L hydrochloric acid solution / Maid change at a certain temperature for several hours to obtain sodium hydrogen zeolite washing, suction filtration, drying, take part NaHY, NaHM, NaHzSM a 5 respectively 5% LaC13, La 10% MgclZ solution obtained corresponding exchange, Mg · zeolite, washing, suction filtration, dried and set aside. Pu 2 test zeolite catalyst

Ion-exchange properties of molecular sieves 4A

4a zeolite powder ion exchange properties, take advantage of this capability to soften water. 4a zeolite molecular sieves framework are each oxygen atom is shared by two adjacent tetrahedra, this structure which may be occupied by cations and water molecules large bugholes, and these cations and water molecules have a greater mobility can cation exchange and reversible dehydration. 4A zeolite is ion exchange with aluminum ions in the framework carried a negative charge carried by each of the aluminum ions, may be not only sodium ions, may also be combined with other cations. Calcium and magnesium ions can enter the original sodium ions occupy a large crystal cave, the 4A Zeolite replace sodium ions 4A Zeolite down ---- that sodium ions can be exchanged with hard water Ca2 + ,, Mg2 + ions exchange, so as to achieve the purpose to soften water.
Combined with calcium and magnesium ions in zeolite 4A speed slower than sodium tripolyphosphate, and with the ability to bind magnesium ions is weak. But 4A molecular sieve can be a small amount of water in harmful heavy metal ions (such as Pb2 +, Cd2 +, Hg2 +) can be very easily and quickly removed to purify water has very important significance.

Use of zeolites

Adsorbents and desiccants
Catalyst
Detergent
Other uses (wastewater treatment, soil conditioners, feed additives)
Zeolite is a new material, is widely used in industry, agriculture, defense and other sectors, and its use are continuing to explore. Zeolite is used as ion exchangers, adsorption separation, drying agents, catalysts, cement admixture. In the petroleum, chemical industry, as petroleum refining catalytic cracking, hydrocracking and petroleum chemical isomerization, reforming, alkylation, disproportionation; gas and liquid purification, separation and storage agent; water softening, water desalination agent; special desiccant (dry air, nitrogen, hydrocarbons, etc.). In light industry for the paper, synthetic rubber, plastics, resins, fillers and coating quality color. In defense, space technology, ultra-high vacuum technology, the development of energy, electronics, etc., used as a separating agent and desiccant adsorption. In the building materials industry, as active hydraulic cement admixture, firing artificial lightweight aggregate, produce lightweight high-strength sheet metal and bricks. In agriculture as a soil conditioner, can play a fertilizer, water, prevent pest effect. In the livestock industry, as feed (pigs, chickens) additives and deodorants, can promote animal growth, improve chick survival. In terms of environmental protection to deal with waste gas, waste water, removal or recycling of metal ions, removal of radioactive contaminants in wastewater effluent from the wastewater.
activated zeolite powders in medicine for the determination of blood and urinary nitrogen content. Zeolite was also developed as a health supplies for anti-aging, remove heavy metals accumulated in the body.
In the production of zeolite commonly used in sugar refining.
New wall materials (aerated concrete blocks) materials
With the solid clay brick gradually leave the stage, the proportion of new wall materials application has now reached 80% of the wall materials production enterprises to gangue, fly ash, ceramic, slag, light industrial waste, heavy construction waste and zeolite based materials, and actively develop new wall materials.
Distillation or heating in a chemical experiment which used to prevent bumping, because the structure of the synthetic zeolite powder which have a large number of small holes, can be used as the bubble condensation nuclei, the reaction solution stable boiling. Available crack to the grain size of unglazed tiles instead.

Introduction and development of carbon molecular sieve background

Description: carbon molecular sieveis a novel sorbent developed in the 1970s, and is an excellent material non-polar carbon, nitrogen carbon molecular sieve(Carbon Molecular Sieves, CMS) for the separation of air enriched in nitrogen, room temperature using low-pressure nitrogen process than conventional high-pressure nitrogen cryogenic process has less investment costs, faster production of nitrogen, nitrogen, and low cost. Therefore, it is currently the preferred engineering PSA (the PSA) nitrogen-enriched air separation adsorbents, such as nitrogen in the chemical industry, oil and gas industry, electronic industry, food industry, coal industry, the pharmaceutical industry, the cable industry, metal heat treatment, transportation and storage and other aspects of a wide range of applications.

R & D background: the 1950s, along with the tide of the industrial revolution, more and more widespread application of carbon materials, including activated carbon applications
PSA nitrogen with carbon molecular sieve
PSA nitrogen with carbon molecular sieve
Extended fastest filter impurities from the initial separation of the progressive development of the different components. At the same time, as technology advances, the human processing capacity of the material is also growing, in this case, carbon molecular sieve adsorbentinto being

Structural characteristics of zeolite

Zeolite there are many, there are 36 kinds have been found. Their common feature is that with a frame-like structure, that is, within their crystal molecules together wildly like put on airs, intermediate formation of many cavities. Because there are many water molecules in the cavities where they are hydrous minerals. The water temperature will be ranked in the face of it, such as when a flame to burn, most of the zeolite will be expansion foam, like a boil in general. Hence the name of the zeolite 4a is from. Different zeolites with different forms, such as analcime and chabazite general axis crystals, heulandite and Stilbite the form of a plate, mordenite, and so became a needle or fibrous. If the internal pure zeolites, then they should be colorless or white, but if mixed with other impurities inside, it will show a variety of colors and shallow. Zeolite also has a glass-like sheen. We know that the zeolite in the water can run out, but that does not damage the interior of the crystal structure of the zeolite. Thus, it can re-absorb water or other liquids. Thus, it has become a feature of people use zeolite 13x. We can use zeolite to separate some substances generated during oil refining, can make it so that the air becomes dry, it can adsorb certain pollutants, purification and drying alcohol and so on. Zeolite minerals are very wide distribution. Particularly common in sedimentary rock formed by volcanic debris, are also found

Variety zeolite

Zeolite nature have been found more than 30 kinds, more common well-zeolite, chabazite, calcium, heulandite, sodium zeolite, mordenite, Stilbite, etc., are to calcium, sodium based. How much of their water content varies with ambient temperature and humidity changes. Crystals belong to crystal system with different mineral species varies, with monoclinic and orthorhombic (orthorhombic) majority. Analcime, chabazite often has equiaxed crystal form, heulandite, Stilbite form of a plate, erionite, mordenite acicular or fibrous, phillipsite and boiling Danshuang Jing Hui common. Pure variouszeolite molecular sieve are colorless or white, but may be due to a variety of light-colored impurities and mixing. Shiny glass. Cleavage varies with the crystal structure. Mohs hardness medium. The proportion ranged from 2.0 to 2.3, containing barium is up from 2.5 to 2.8. zeolite 5a formed in the epithermal stage, common in extrusive rock pores, also found in hydrothermal deposits and the modern spa deposition. The zeolite may be the action of water by diafiltration to exchange cations, the ingredients sodium, calcium ions can be exchanged with an aqueous solution of potassium and magnesium ions to soften hard water industry. The crystal structure of the zeolite comprises silicon (Al) oxy connected into a three-dimensional tetrahedral framework, grid has a variety of different sizes of holes and channels with large open. Alkali metal or alkaline earth metal ions and water molecules are located in the holes and channels, to contact grid is weak. Different ion exchange on the zeolite structure has little effect, but the nature of the zeolite so that change. Present in the crystal lattice of different size cavities, can absorb or filter elements of different sizes other substances. Industrially often as a molecular sieve, to purify or separate components of the mixed material, such as gas separation, oil purification, treatment of industrial pollution

What is zeolite desiccant.

Aluminosilicate compound having a cubic lattice, is mainly composed of silicon aluminum attached through an oxygen bridge consisting of the open framework structure, there are a lot of uniform pore size and neat in pore structure, large surface area of the inner hole. It also contains a low price and a larger ionic radius of metal ions and the chemical form of water. Since the water molecules in the continuous loss of heat, but the same crystal framework structure, the formation of many of the same size of the cavity, the cavity there are many of the same diameter connected pores, the diameter of these small pores of uniform size, pore ratio can diameter smaller molecules adsorbed into the interior of the cavity in the past, and the ratio of pores too large molecular exclusion, and thus able to molecular diameter different shapes, different degree of polarity of the molecule, the boiling point of different molecules, the different degree of saturation of molecular separation open, that has the effect of "screening" elements, so called molecular sieves. Currently #zeolite #desiccant widely used in the metallurgical, chemical, electronics, petrochemical and natural gas industries.

Variety of zeolite

Zeolite nature have been found more than 30 kinds, more common well-synthetic zeolite powder supplier, chabazite, calcium, heulandite, sodium zeolite, mordenite, Stilbite, etc., are to calcium, sodium based. How much of their water content varies with ambient temperature and humidity changes. Crystals belong to crystal system with different mineral species varies, with monoclinic and orthorhombic (orthorhombic) majority. Analcime, chabazite often has equiaxed crystal form, heulandite, Stilbite form of a plate, erionite, mordenite acicular or fibrous, phillipsite and boiling Danshuang Jing Hui common. Pure various zeolites are colorless or white, but may be due to a variety of light-colored impurities and mixing. Shiny glass. Cleavage varies with the crystal structure. Mohs hardness medium. The proportion ranged from 2.0 to 2.3, containing barium is up from 2.5 to 2.8. zeolite molecular sieve formed in the epithermal stage, common in extrusive rock pores, also found in hydrothermal deposits and the modern spa deposition. The zeolite may be the action of water by diafiltration to exchange cations, the ingredients sodium, calcium ions can be exchanged with an aqueous solution of potassium and magnesium ions to soften hard water industry. The crystal structure of the zeolite comprises silicon (Al) oxy connected into a three-dimensional tetrahedral framework, grid has a variety of different sizes of holes and channels with large open. Alkali metal or alkaline earth metal ions and water molecules are located in the holes and channels, to contact grid is weak. Different ion exchange on the zeolite structure has little effect, but the nature of the 4a zeolite powder so that change. Present in the crystal lattice of different size cavities, can absorb or filter elements of different sizes other substances. Industrially often as a molecular sieve, to purify or separate components of the mixed material, such as gas separation, oil purification, treatment of industrial pollution.

Introduction and development of carbon molecular sieve background

Description: carbon molecular sieveis a novel sorbent developed in the 1970s, and is an excellent material non-polar carbon, nitrogen carbon molecular sieve(Carbon Molecular Sieves, CMS) for the separation of air enriched in nitrogen, room temperature using low-pressure nitrogen process than conventional high-pressure nitrogen cryogenic process has less investment costs, faster production of nitrogen, nitrogen, and low cost. Therefore, it is currently the preferred engineering PSA (the PSA) nitrogen-enriched air separation adsorbents, such as nitrogen in the chemical industry, oil and gas industry, electronic industry, food industry, coal industry, the pharmaceutical industry, the cable industry, metal heat treatment, transportation and storage and other aspects of a wide range of applications.

R & D background: the 1950s, along with the tide of the industrial revolution, more and more widespread application of carbon materials, including activated carbon applications
PSA nitrogen with carbon molecular sieve
PSA nitrogen with carbon molecular sieve
Extended fastest filter impurities from the initial separation of the progressive development of the different components. At the same time, as technology advances, the human processing capacity of the material is also growing, in this case, carbon molecular sieve adsorbentinto being

Use of zeolites

Adsorbents and desiccants
Catalyst
Detergent
Other uses (wastewater treatment, soil conditioners, feed additives)
Zeolite is a new material, is widely used in industry, agriculture, defense and other sectors, and its use are continuing to explore. Zeolite is used as ion exchangers, adsorption separation, drying agents, catalysts, cement admixture. In the petroleum, chemical industry, as petroleum refining catalytic cracking, hydrocracking and petroleum chemical isomerization, reforming, alkylation, disproportionation; gas and liquid purification, separation and storage agent; water softening, water desalination agent; special desiccant (dry air, nitrogen, hydrocarbons, etc.). In light industry for the paper, synthetic rubber, plastics, resins, fillers and coating quality color. In defense, space technology, ultra-high vacuum technology, the development of energy, electronics, etc., used as a separating agent and desiccant adsorption. In the building materials industry, as active hydraulic cement admixture, firing artificial lightweight aggregate, produce lightweight high-strength sheet metal and bricks. In agriculture as a soil conditioner, can play a fertilizer, water, prevent pest effect. In the livestock industry, as feed (pigs, chickens) additives and deodorants, can promote animal growth, improve chick survival. In terms of environmental protection to deal with waste gas, waste water, removal or recycling of metal ions, removal of radioactive contaminants in wastewater effluent from the wastewater.
activated zeolite powders in medicine for the determination of blood and urinary nitrogen content. Zeolite was also developed as a health supplies for anti-aging, remove heavy metals accumulated in the body.
In the production of zeolite commonly used in sugar refining.
New wall materials (aerated concrete blocks) materials
With the solid clay brick gradually leave the stage, the proportion of new wall materials application has now reached 80% of the wall materials production enterprises to gangue, fly ash, ceramic, slag, light industrial waste, heavy construction waste and zeolite based materials, and actively develop new wall materials.
Distillation or heating in a chemical experiment which used to prevent bumping, because the structure of the synthetic zeolite powder which have a large number of small holes, can be used as the bubble condensation nuclei, the reaction solution stable boiling. Available crack to the grain size of unglazed tiles instead.