Vacuum and atmospheric gas removal from catalytic cracking for absorption and stabilization
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This post was last edited by sxf1028102800 on 2022-12-10 at 12:50. Why is the gas from the atmospheric and vacuum distillation units sent to the absorption and stabilization section of the catalytic cracking unit? Is it for desulfurization or something else? Does going for absorption stabilization not increase the load associated with absorption stabilization, thereby raising its energy consumption? I don’t quite understand. Please, experts, explain it to me. Thank you
This post was last edited by Qian Hui on 2022-12-10 at 17:59. The essence of catalytic absorption and stabilization lies in the separation of multiple components, with the products being dry gas, liquefied hydrocarbons, and gasoline. The dry gas (waste product) from atmospheric and vacuum distillation is recovered and reused through absorption stabilization. This process does not involve desulfurization issues. As for increasing the load for absorption stabilization and energy consumption, it depends on the specific conditions of the installation. Think on a larger scale.
Absorption stabilization is used for separating dry gas, liquefied gas, light stones and heavy stones; the atmospheric three-phase gas consists of hydrocarbons from carbon 1 to carbon 5, and catalysis can clearly help reduce the need for an additional separation unit
It must be effective; otherwise, it would just be better to burn it away