[Q&A] 2017.8.1
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What are the characteristics of molecular sieves when used as adsorbents? Answer: 1. It has extremely strong adsorption selectivity ； 2. Possesses strong adsorption capacity ； 3. Adsorption capacity varies with temperature ； 4. The adsorption capacity is related to the gas linear velocity. Under adiabatic conditions, the linear velocity of the gas has little effect on the adsorption capacity of the molecular sieve. http://down.hcbbs.cc/attachment/forum/201706/10/203353z7y06fdo70r6eod0.jpg Petrochemical zone – “Creative Ideas for Energy Saving”: The second phase of this event is in full swing. http://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1666758 (Source: Haichuan Chemical Industry Forum) 2017: “My Technical Upgrades” in the field of coal chemical industry. http://bbs.hcbbs.com/thread-1786290-1-1.html (Source: Haichuan Chemical Industry Forum Website) Registration for chemical engineers – “Learning from Others’ Experiences” event. http://bbs.hcbbs.com/thread-1808158-1-1.html (Source: Haichuan Chemical Industry Forum Website)
1. It has extremely high adsorption selectivity. 2. It possesses strong adsorption capacity. 3. The adsorption capacity varies with temperature. 4. The adsorption capacity is independent of the gas linear velocity. Under adiabatic conditions, the linear velocity of the gas has little effect on the adsorption capacity of the molecular sieve
It has structural stability, a large specific surface area, numerous modification methods, and enables physical and chemical adsorption as well as repeated adsorption and desorption.
The pore size is very small; only molecules smaller than this pore size can enter the interior of the lattice, giving it strong adsorption properties
1. It possesses extremely strong adsorption selectivity； 2. Possesses strong adsorption capacity ； 3. Adsorption capacity varies with temperature ； 4. The adsorption capacity is related to the gas linear velocity. Under adiabatic conditions, the linear velocity of the gas has little effect on the adsorption capacity of the molecular sieve.
Molecular sieves possess unique properties: 1. Reversible adsorption of water, gases, and liquids; 2. Cation exchange capability; 3. The pores of molecular sieves have an extremely high internal surface area. For these reasons, molecular sieves are suitable for use in deep drying, selective adsorption, and catalysis. Compared to other adsorbents, molecular sieves have outstanding advantages: 1. Very high adsorption capacity; 2. Selective adsorption and separation; 3. Catalytic properties; 4. Ion exchange capabilities. Due to their properties, molecular sieves are widely used in industries such as petrochemicals, natural gas, refrigeration, and food processing. The main application areas include: 1. Drying of gases and liquids ； 2. Purification of gases and liquids ； 3. Separation of gases and liquids ； 4. Hydrocracking, catalytic cracking, and isomerization catalysts ； 5. Detergent aids and water softeners
1. It possesses extremely strong adsorption selectivity； 2. Possesses strong adsorption capacity ； 3. Adsorption capacity varies with temperature ； 4. The adsorption capacity is related to the gas linear velocity. Under adiabatic conditions, the linear velocity of the gas enhances the adsorption capacity of the molecular sieve
1. Very high adsorption capacity 2. Selective adsorption and separation 3. Catalytic properties 4. Ion exchange properties
1. Selective adsorption based on the size, polarity, and molecular weight of the molecules； 2. Ion exchange mechanism, easy regeneration ； 3. Molecular sieves have an extremely strong moisture absorption capacity and are sensitive to oil ； 4. High-efficiency adsorbents