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Tail gas recovery system in the production of diketene

A diketene and tail gas recovery technology, which is applied in gas treatment, separation methods, and dispersed particle separation, etc., can solve the problems that ketene cannot be absorbed, ketene cannot be used, and energy loss in tail gas treatment is achieved, so as to improve the overall economic benefits, The effect of reducing energy consumption and improving utilization

Active Publication Date: 2021-04-13
QINGDAO DOUBLE PEACH SPECIALTY CHEM GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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  • Tail gas recovery system in the production of diketene
  • Tail gas recovery system in the production of diketene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] like figure 1 As shown, in the tail gas recovery system in the production of diketene in this embodiment, the tail gas absorption product receiving device imports the tail gas absorption product collected therein into the tail gas absorption device 2 as an absorption medium, and continues to absorb tail gas in the tail gas absorption device 2 . Through the tail gas recovery system in the production of diketene introduced in this embodiment, a cycle is established between the tail gas absorption device 2 and the tail gas absorption product receiving device 3, and the absorption medium discharged in the tail gas absorption device 2 repeatedly and repeatedly in the tail gas absorption device 2 Circulation between the tail gas absorption product receiving equipment 3, while increasing the absorption rate of the absorption medium for the active ingredients in the tail gas, it can also increase the concentration of the substance content in the absorption medium, so that the ac...

Embodiment 2

[0088] like figure 1 As shown, the difference between the tail gas recovery system in the production of diketene in this embodiment and the above embodiment is that the tail gas absorption device 2 includes: a feeding device 21, which is used to introduce the tail gas into the tail gas absorption device 2 and connect to the tail gas source 1 . The discharge device 22 is used to export the tail gas absorption product generated in the tail gas absorption device 2 , and communicates with the tail gas absorption product receiving device 3 . The gas outlet device 23 is used to lead out the tail gas not completely absorbed in the tail gas absorption device 2 .

[0089] Further, the tail gas absorbing device 2 in this embodiment also includes an absorbing medium introducing device, and the absorbing medium used to absorb tail gas is introduced into the inside of the tail gas absorbing device 2, and the absorbing medium introducing device communicates with the tail gas absorbing prod...

Embodiment 3

[0093] like figure 1 As shown, the difference between the tail gas recovery system in the production of diketene in this embodiment and the above embodiment is that the tail gas recovery system includes a gas phase balance device 5, and the gas phase balance device 5 communicates the tail gas absorption device 2 with the tail gas absorption product receiving device 3, The air pressure between the two can be balanced and a certain amount of gas-phase material exchange can be performed; further, the gas-phase balance device 5 connects the top of the tail gas absorption device 2 with the top of the tail gas absorption product receiving device 3 . Preferably, the gas phase equilibration device 5 includes a piping structure allowing gas circulation.

[0094] Through the tail gas recovery system in the production of diketene introduced in this example, gas phase balance equipment is added, and the gas phase balance equipment connects the gas phase between the tail gas absorption equ...

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Abstract

The invention discloses a tail gas recovery system in the production of diketene, comprising: a tail gas source for collecting the tail gas produced by the diketene production system and guiding the flow direction of the tail gas; tail gas absorption equipment for providing a place for the absorption medium to absorb the tail gas , and communicate with the tail gas source; the tail gas absorption product receiving device is connected with the tail gas absorption device, and is mainly used to receive and / or store the tail gas absorption product generated in the tail gas absorption device. The tail gas recovery system in the production of diketene introduced by the invention can efficiently recover the active components in the tail gas, and the recovered products can continue to exert their economic value.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/18B01D53/14
CPCB01D53/1406B01D53/1412B01D53/18B01D2258/02
Inventor 赵秀平王超韩娟郑斌郑越晴王亚飞
Owner QINGDAO DOUBLE PEACH SPECIALTY CHEM GRP
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