Tail-gas recovery system in production of diketene

Abstract

The invention discloses a tail-gas recovery system in production of diketene. The tail-gas recovery system comprises a tail-gas source, tail-gas absorbing equipment and tail-gas absorbing product receiving equipment, wherein the tail-gas source is used for collecting tail gas produced by a diketene production system and guiding the flowing direction of the tail gas; the tail-gas absorbing equipment provides a place of tail-gas absorption for an absorbing medium and is communicated with the tail-gas source; the tail-gas absorbing product receiving equipment is connected with the tail-gas absorbing equipment and is mainly used for receiving and / or storing tail-gas absorbing products generated in the tail-gas absorbing equipment. The tail-gas recovery system in production of diketene disclosed by the invention has the beneficial effects that recovery for effective components in the tail gas can be realized by high efficiency, and the economic values of the recovered products can be continuously exerted.

Description

technical field [0001] The invention belongs to the field of diketene production equipment, and in particular relates to a tail gas recovery system in the production of diketene. Background technique [0002] The production of diketene in the prior art mostly adopts the acetic acid catalytic cracking method, and the cracked gas obtained by this method contains ketene, ethylene, methane and other combustible gases. The above-mentioned combustible gas is absorbed by the absorption tower, and the ketene in it is utilized, while the remaining tail gas is sent to the cracking furnace for incineration. However, in actual production, the absorption tower cannot absorb 100% of the ketene in the cracked gas, so that a certain amount of ketene still contained in the production tail gas cannot be utilized. Moreover, in the prior art, the tail gas is directly incinerated, and the materials that can still be used in the tail gas are burned. On the one hand, the raw materials in the prod...

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Problems solved by technology

However, in actual production, the absorption tower cannot absorb 100% of the ketene in the cracked gas, so that the production tail gas still contains a certain amount of ketene that cannot be utilized.

Moreover, in the prior art, the tail gas is directly incinerated, and the materials that can still be used in the tail gas are burned. On the one hand, the raw materials in the production of diketene are wasted; Caused energy loss in tail gas treatment, increased production costs, and increased environmental burden

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