Method for removing acid gases in cracked gas

Abstract

This invention provides a method for removing acidic gas from cracked gas. The method comprises: introducing cracked gas containing acidic gas through a gas inlet into a super-gravitational revolving bed device, adequately contacting with alkaline absorbent or water in the rotor filler layer, removing acidic gas, and exhausting through a gas outlet to obtain cracked gas with acidic gas content below 1 ppm. The method has such advantages as low apparatus investment, low energy consumption, low operation cost, and low apparatus space occupation.

Description

technical field

[0001] The invention relates to a method for removing acid gas in cracked gas, in particular to a method for removing acid gas in cracked gas by using a high-gravity rotating bed technology. Background technique

[0002] In industry, the cracked gas from steam cracking to ethylene usually contains hydrogen sulfide, carbon dioxide and organic sulfur (collectively referred to as: acid gas), and the acid gas causes great harm to the subsequent separation. First of all, when the sulfur content is high, the equipment will be severely corroded and the service life of the equipment will be shortened. At the same time, sulfur can also shorten the life of the molecular sieve of the dry cracked gas and poison the palladium catalyst used for deacetylation. Secondly, carbon dioxide is easy to form dry ice during the subsequent low-temperature separation operation to block equipment and pipelines, disrupting normal production. More importantly, acid gas impurities are al...

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