• 迪宝催化剂


  • 迪宝催化剂


  • 迪宝


Name:Panjin dew-point catalyst technologise co.,ltd.

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News Detail

Cracking of Ethylene Oxychlorination Catalyst

Catalyst News
Release time:
2021/11/22 13:59
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The purpose of Ethylene Oxychlorination Catalyst cracking is to crack low-cost heavy oil at high temperature into smaller hydrocarbons (such as gasoline). And at the same time obtain olefin hard aromatics and other chemical raw materials. The cracking reaction is carried out at high temperature and high pressure (above 650℃, 1.5~2.0MPa) without using a catalyst, generally called thermal cracking; it can also be carried out at lower temperature and pressure (415~525℃, 0.07~0.13MPa) , This is catalytic cracking.

Ethylene Oxychlorination Catalyst

Ethylene Oxychlorination Catalyst cracking has more advantages than thermal cracking due to the use of catalysts. For example, the gasoline produced by catalytic cracking has a high octane number and good stability. It is suitable for fuel for high compression ratio gasoline engines and is not prone to knocking. The yield of thermally cracked gasoline and diesel is generally only 65% ​​to 70%, while that of catalytic cracking can reach about 80%. Due to the occurrence of coking in the thermal cracking unit during production, the furnace tube will continue to coke. When the coking reaches a certain level, the work must be stopped for scorching. Catalytic cracking is not subject to this restriction. As long as appropriate measures are taken to reduce equipment corrosion and wear, the start-up cycle can be extended. Therefore, since the successful development of the catalytic cracking process in 1930, it has become the main process of cracking.

Ethylene Oxychlorination Catalyst made natural clay in the early stage of cracking. Its main component is aluminum silicate. Due to its poor quality, it will be replaced by synthetic silicon-aluminum catalyst in the future. Since 1960, molecular sieve catalysts with better performance have been developed. There are many types of molecular sieves. Commonly used in industry are A-type, X-type, Y-type zeolite and mordenite, etc., and Y-type zeolite is mainly used as a cracking catalyst. The advantages of using molecular sieves are: gasoline yield and octane number increase during cracking .