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Acetylene tail gas recovery device

A technology of acetylene tail gas and recovery device, which is applied in the direction of absorption purification/separation, separation method, organic chemistry, etc., and can solve problems such as energy waste

Inactive Publication Date: 2012-02-22
XINJIANG MARKORCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This part of the gas is directly sent to the torch for combustion, resulting in a waste of energy

Method used

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  • Acetylene tail gas recovery device
  • Acetylene tail gas recovery device

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Embodiment Construction

[0010] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0011] Such as figure 1 Shown:

[0012] The acetylene tail gas first enters the first water washing tower for preliminary washing, and then enters the second water washing tower for secondary washing. After the tail gas is washed in two stages, formaldehyde is the main formaldehyde, and almost all impurities including methanol and propargyl alcohol are included. Dissolved in the washing liquid, the purified tail gas is sent directly to the inlet of the decracking gas compressor after passing through the liquid separation and fire arresting tower, and after being mixed with the cracking gas, it is pressurized by the decracking gas compressor and then sent to the enri...

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Abstract

The invention relates to an acetylene tail gas recovery device, which belongs to the field of energy conservation and pollution preservation and comprises a tee joint. Three ends of the tee joint are respectively connected with an acetylene tail gas discharge device, an acetylene torch and a first water washing tower. The first water washing tower is connected with a second water washing tower which is connected with a liquid separating fire retarding tower, the liquid separating fire retarding tower is connected with a cracked gas removal compressor inlet, and a cracked gas removal compressor outlet is connected with an extracting and concentrating device. Acetylene tail gas firstly enters the first water washing tower to be carried out preliminary washing, and then enters the second water washing tower to be carried out secondary washing. After two-stage washing of the tail gas, methanal in the tail gas is almost soluble in washing liquid completely, purified tail gas passes through the liquid separating fire retarding tower to be directly sent to an inlet of the cracked gas removal compressor inlet and mixed with pyrolysis gas, and then sent to the extracting and concentrating device after being pressurized by a cracked gas removal compressor, so that recovery and reusing purposes are achieved.

Description

technical field [0001] The invention relates to an acetylene tail gas recovery device and belongs to the field of energy-saving and anti-fouling devices. Background technique [0002] The refined acetylene from the acetylene purification unit first passes through the resistance tower, and then is pressurized by the booster and then sent to the B3D (1,4-butynediol) reactor to synthesize B3D with formaldehyde under the action of the catalyst reaction. In order to improve the reaction effect, the unreacted acetylene in the reactor must be circulated in the device. As the reaction progresses, the inert gas mainly composed of nitrogen in the circulating acetylene will accumulate more and more. If it is not discharged continuously, it will definitely affect The normal progress of the B3D synthesis reaction. Therefore, part of the unreacted gas is exhausted after the B3D reactor, so that the nitrogen content in the acetylene entering the reactor is maintained between 1.5-2.5%. T...

Claims

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Application Information

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IPC IPC(8): B01D53/18C07C11/24C07C7/11
Inventor 李兴义段春平李高林徐茂朱慧明成珊珊
Owner XINJIANG MARKORCHEM
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