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