Device and method for recovering and treating low-concentration sf6 gas in closed space
A technology of gas recovery and closed space, which is applied in the direction of chemical instruments and methods, separation methods, sulfur and halogen compounds, etc., can solve problems such as time-consuming, pollute the environment, affect work efficiency, etc., and achieve the reduction of SF6 content and rapid processing The effect of treatment
Active Publication Date: 2022-01-25
STATE GRID HEBEI ELECTRIC POWER RES INST +2
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Problems solved by technology
[0003] The purpose of the present invention is to provide a low concentration SF in a closed space 6 A gas recovery treatment device and method, aimed at solving the problem of low concentration SF in closed spaces in the current power industry operation process 6 The gas is directly discharged into the atmosphere to reduce the concentration, which takes a long time, affects work efficiency and pollutes the environment
Method used
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specific Embodiment approach
[0095] As a specific implementation of the embodiment of the present invention, the condensation-membrane separation-liquefaction recovery treatment includes the following steps:
[0096] (1) through the direction selection unit 302, the gas flows to the condensation separation unit;
[0097] (2) The gas is condensed and separated through the condensation separation unit, and the separated gas contains a higher concentration of SF 6 The gas enters the gas recovery part 6;
[0098] (3) Contains a lower concentration of SF after condensation and separation 6 The gas flows into the gas circulation membrane separation part 4 for membrane separation treatment, and the separated SF 6 The gas with higher content enters the gas recovery unit 6, and the separated tail gas is discharged after being processed by the tail gas treatment unit 5;
[0099] (4) The gas recovery unit 6 carries out liquefaction, separation and recovery of the gas in it to obtain liquid SF 6 .
[0100] In th...
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The invention provides a low-concentration SF in a closed space 6 Gas recovery treatment device and method, belonging to SF 6 In the technical field of gas recovery and treatment, low concentration of SF in closed space 6 The gas recovery and processing device includes a dry filter part, a gas selective condensation separation part, a gas circulation membrane separation part, a tail gas treatment part, a gas recovery part, and a gas detection part. The gas selective condensation separation part is provided with a connected direction selection unit and condensation separation unit, the direction selection unit is connected to the dry filter unit; the gas circulation membrane separation unit is connected to the direction selection unit and the condensation separation unit; the tail gas treatment unit is connected to the gas circulation membrane separation unit; the gas recovery unit is connected to the condensation separation unit, the direction selection unit and the gas The circulation membrane separation part is connected; the gas detection part is connected with the dry filter part, the gas circulation membrane separation part and the tail gas treatment part. Low-concentration SF in the enclosed space provided by the present invention 6 Gas recovery treatment apparatus and method improve SF 6 Gas recovery efficiency.
Description
technical field [0001] The invention belongs to SF 6 The technical field of gas recovery treatment, more specifically, relates to a low-concentration SF in a closed space 6 Gas recovery processing device and method. Background technique [0002] SF 6 (Sulfur hexafluoride) gas is widely used in the power industry because of its excellent insulating properties and arc extinguishing ability. With the continuous construction and operation of a large number of sulfur hexafluoride circuit breakers, fully enclosed combined electrical appliances, SF6 gas inflatable cabinets and other equipment in the power industry, SF 6 The dosage is getting bigger and bigger. At present, most of the fully enclosed combination appliances and almost all SF 6 Gas inflatable cabinets are arranged in relatively closed spaces such as power distribution rooms and simple rooms. Through long-term leakage and accumulation, there are relatively low concentrations of SF in these closed spaces. 6 gas. E...
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IPC IPC(8): C01B17/45B01D53/26B01D53/22B01D53/00
CPCC01B17/453B01D53/002B01D53/228B01D53/26B01D53/261Y02P20/151
Inventor 庞先海潘瑾甄利李晓峰顾朝敏李天辉董驰刘振
Owner STATE GRID HEBEI ELECTRIC POWER RES INST