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Separation and purification device and method for recycled C4F7N/CO2 mixed gas

A mixed gas and CO2 technology, applied in separation methods, carboxylic acid nitrile purification/separation, dispersed particle separation, etc., can solve the problems such as not given, and achieve the effects of convenient filling, low energy consumption, and simple process

Pending Publication Date: 2022-01-21
ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the technical scheme of the above-mentioned Chinese invention patent application does not provide how to separate and purify C 4 f 7 N / CO 2 mixed composition

Method used

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  • Separation and purification device and method for recycled C4F7N/CO2 mixed gas
  • Separation and purification device and method for recycled C4F7N/CO2 mixed gas
  • Separation and purification device and method for recycled C4F7N/CO2 mixed gas

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 As shown, a recycled C 4 f 7 N / CO 2 Separation and purification device for mixed gas, including: first absorption tower 1, second absorption tower 2, first diaphragm pump 3, third absorption tower 4, second diaphragm pump 5, rectification purification tower 6, V-shaped storage tank 7 , refrigerator 8, fourth absorption tower 9; first solenoid valve V1, second solenoid valve V2, third solenoid valve V3, fourth solenoid valve V4, fifth solenoid valve V5, sixth solenoid valve V6, seventh solenoid valve Valve V7, eighth solenoid valve V8, ninth solenoid valve V9, ball valve V10, eleventh solenoid valve V11, first three-way solenoid valve VT1, second three-way solenoid valve VT2; first pressure gauge P1, second pressure Gauge P2, third pressure gauge P3, fourth pressure gauge P4, fifth pressure gauge P5.

[0035] One end of the first electromagnetic valve V1 is used as the input end of the mixed gas, the other end of the first electromagnetic valve V1 is...

Embodiment 2

[0060] Such as figure 2 As shown, an application of the recovered C 4 f 7 N / CO 2 The method for the separation and purification device of mixed gas comprises the following steps:

[0061] S1, Adsorption C 4 f 7 N / CO 2 CO in the mixed gas 2 gas, specifically: open the first solenoid valve V1, C 4 f 7 N / CO 2 The mixed gas enters the first absorption tower 1 through the first electromagnetic valve V1, and the first absorption tower 1 absorbs C 4 f 7 N / CO 2 Most of the CO in the gas mixture 2 At this time, open the fifth solenoid valve V5, the ball valve V10, open the second diaphragm pump 5, and the gas containing a small amount of CO after being absorbed by the first absorption tower 1 2 The mixed gas is compressed in the rectification purification tower 6 by the second diaphragm pump 5, and is separated and purified;

[0062] S2, CO 2 The desorption of gas is specifically: closing the first solenoid valve V1 and the fifth solenoid valve V5, opening the third sol...

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PUM

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Abstract

The invention discloses a separation and purification device and method for recycled C4F7N / CO2 mixed gas, which belong to the technical field of C4F7N / CO2 mixed gas recycling, and relate to the problem of how to separate and purify the recycled C4F7N / CO2 mixed gas in gas insulation equipment. The recycled C4F7N / CO2 mixed gas is subjected to CO2 adsorption and C4F7N enrichment through an absorption tower, the enriched high-concentration C4F7N mixed gas is compressed into a rectification purification tower to be pressurized and cooled, the C4F7N is extremely easy to liquefy, the liquid C4F7N is transferred into a storage tank, CO2 and partially vaporized C4F7N gas are input into a mixed tail gas treatment pipeline through a gas outlet in the top of the rectification purification tower to be adsorbed, theresidual C4F7N is absorbed, and the CO2 is removed. The device can separate C4F7N and CO2 gas and remove impurities in the mixed gas, the purity of the treated C4F7N is 95% or above, and the device is simple in process and low in energy consumption.

Description

technical field [0001] The invention belongs to C 4 f 7 N / CO 2 The technical field of mixed gas recovery relates to a recovered C 4 f 7 N / CO 2 A separation and purification device and method for mixed gas. Background technique [0002] Gas-insulated equipment is one of the irreplaceable key power transmission and transformation equipment in modern power grids. It has the advantages of compact structure, little influence from environmental factors, and high operational safety and reliability. Thanks to SF 6 The gas has a strong greenhouse effect and was listed as one of the six restricted greenhouse gases by the "Kyoto Protocol" in 1997. At present, foreign countries have developed non-SF 6 The environmental protection insulation medium C 4 f 7 N, considered to be present instead of SF 6 The gas is used as a hot-spot medium for electrical equipment insulation. [0003] C 4 f 7 The insulating property of N is SF 6 More than 2.2 times that of gas, the global warm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/04B01D3/14C07C253/34F25J3/02C07C255/10C01B32/50
CPCB01D53/04B01D53/0407B01D3/14F25J3/0266C01B32/50C07C253/34C07C255/10Y02C20/40Y02P20/151Y02P70/10
Inventor 刘伟朱会朱太云许根养宋玉梅董王朝徐霄筱梁颂冰
Owner ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER