Cryogenic Air Seoaration Unit Molecular Sieve
1.In the air separation equipment, the purification system of molecular sieve is set behind the air pre-cooling system to ensure the operation of the equipment.
2.Ithas stronger affinity to water than alumina, so the energy consumed during desorption is more.
3.Using alumina to remove water can reduce renewable energy consumption.
Product Introduction
Cryogenic air seoaration unit molecular sieve has high affinity for polymer polarities such as H2O, NH3, H2S, CO2, etc., especially for water, at low partial pressure (even below 133 Pa) or low concentration, high temperature (even above 100 ℃), etc. It still has a high adsorption capacity under harsh conditions.
Adsorption under low partial pressure or low concentration When the relative humidity is 30%, the water absorption of molecular sieve is higher than that of silica gel and activated alumina. As the relative humidity decreases, the advantages of molecular sieves become more and more significant, while silica gel and activated alumina have increasing adsorption capacity with the increase of humidity, and their adsorption capacity is very small when the relative humidity is very low.
In the air separation equipment, the purification system of molecular sieve is set behind the air pre-cooling system to ensure the operation of the equipment.
Product Function Introduction：
Cryogenic air seoaration unit molecular sieve action：If the air is not purified, the frozen water and carbon dioxide will be deposited in low temperature heat exchangers, turbomachinels, or distillation towers, which will clog channels, pipes, and valves. The accumulation of acetylene in liquid oxygen is more dangerous to explode.Therefore, the role of molecular sieve purification system is to remove water, acetylene, carbon dioxide, propylene and butene and other impurities contained in the air, so as to ensure the long-term safe and reliable operation of air separation equipment.
Product technical parameters：
Item | Hydration Catalyst | |
Color | White | |
Aperture | ZSM-5 Molecular Sieve Calalyst | |
Shape | Powder | |
Size(mm) | 2-3μm | 2-3μm |
Molar | 26-40 | 26-40 |
Ratio(SiO2/Al2O3) | ≥0.35 | ≥0.45 |
Acid(mmol/g) | ≤5 | ≤2 |
Cl(ppm) | ≤1000 | ≤300 |
Polymorph | Na1.78Al2Si31.1066.1 | |
Operating Conditions | ||
Reaction Temperature | 100-130℃ | |
Reaction Pressure | 0.5-1.0Mpa(g) | |
Catalyst-Oil Ratio | 0.46 | |
WOR | 3:1 | |
Cycloethylene Conversion Rate | ≥10% | |
Cycloethylene Selevtivity | ≥98.5% | |
Application | Catalyst for Cyclohexene Hydration | |
Producing the Cyclohecanol | ||
Zeolite Molecular Sieve | ||
Production Advantage：
At present, the air purifier used in domestic air separation equipment can be divided into vertical and horizontal types according to the placement mode, and can be divided into single bed and double bed from the structure.The vertical air purifier has the advantage of small floor space, while the horizontal air purifier has the limitation of use because of its simple structure and large floor space.The adsorbent used in the single bed is the molecular sieve, which absorbs harmful components such as water, carbon dioxide and hydrocarbons.
Cryogenic air seoaration unit molecular sieve has stronger affinity to water than alumina, so the energy consumed during desorption is more.Using alumina to remove water can reduce renewable energy consumption.
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