Tail-gas recovery system in production of diketene

A tail gas recovery and diketene technology, which is applied in gas treatment, membrane technology, and dispersed particle separation, can solve problems such as ketene cannot be utilized, ketene cannot be absorbed, and energy loss in tail gas treatment can improve overall economic benefits. The effect of reducing energy consumption and improving utilization

Active Publication Date: 2018-11-23
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 production of diketene
  • Tail-gas recovery system in 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 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...

Claims

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Application Information

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Patent Type & Authority Applications(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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