Pyrolysis gas typically contains water 400-700ppm these moisture cryogenic separation operation when ice crystals, molecular sieve, the other at high pressure and low temperature, water also with light alkanes (such as: CH4, C2H6 and C3H8, etc. ) a white crystalline hydrocarbon hydrates. The hydrocarbon hydrate ice crystals can lead to clogged pipes and equipment, resulting in parking. Thus, the oil in the pyrolysis gas before cryogenic separation must be dried depth, so that the water content of the pyrolysis gas is reduced to less than 5ppm (i.e., its dew point below -60 ℃). Now widely recognized as the most widely used and desired depth of 3A zeolite molecular sieve adsorbents dried, since it only cracked gas adsorbed water molecules, does not adsorb large hydrocarbon molecules (eg: C2H6, C2H4, C3H8 and C3H6, etc. ), and thus avoid internal olefin compound in the zeolite channels coke, thus prolonging the life of the adsorbent. Shanghai new professional production of zeolite molecular sieves, Ltd., the company's 3A molecular sieve can be regenerated: 3A molecular sieve can be adsorbed by molecular sieve was subjected to buck or heating and regeneration. The former is known as pressure swing adsorption (PSA), open the original molecular sieve, or vacuum swing adsorption (VSA, Jilin molecular sieves, vacuum if any); the latter is known as temperature swing adsorption. In order to remove impurities, Changchun molecular sieve, molecular sieve can work, regeneration is necessary. Surrounding the purge gas can heat up to 250 ℃, but can not exceed 300 ℃. Welcome your advice! Beipiao sieve | new molecular sieves (Online) | new zeolite molecular sieves by the Shanghai Limited. Shanghai new molecular sieve Limited (www.molsionms.com) is Shanghai's Songjiang District, elemental leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. There are new leaders in the molecular sieve with the staff warmly welcome all inquiries negotiations to create new molecular sieves better future.