Investigation into the Purification and Separation Technology for SF<sub>6</sub> Gas Mixtures Used in Electrical Apparatus

LIU Wei; SU Zhenxi; QI Jiong; CHENG Wei; MA Fengxiang; ZHU Feng

doi:10.13296/j.1001-1609.hva.2016.12.037

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Investigation into the Purification and Separation Technology for SF₆ Gas Mixtures Used in Electrical Apparatus

更新时间：2025-04-26

- Investigation into the Purification and Separation Technology for SF₆ Gas Mixtures Used in Electrical Apparatus
- High VoltageApparatus Vol. 52, Issue 12, Pages: 227-231(2016)
- 作者机构：
  
  国网安徽省电力公司电力科学研究院国网公司六氟化硫气体特性分析与净化处理技术重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2016.12.037
  CLC： TM507
- Published：2016
- 稿件说明：
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[1]刘伟,苏镇西,祁炯,程伟,马凤翔,朱峰.电力设备中SF_6混合绝缘气体净化分离技术的探究[J].高压电器,2016,52(12):227-231.

LIU Wei, SU Zhenxi, QI Jiong, et al. Investigation into the Purification and Separation Technology for SF₆ Gas Mixtures Used in Electrical Apparatus[J]. High voltageapparatus, 2016, 52(12): 227-231.
[1]刘伟,苏镇西,祁炯,程伟,马凤翔,朱峰.电力设备中SF_6混合绝缘气体净化分离技术的探究[J].高压电器,2016,52(12):227-231. DOI： 10.13296/j.1001-1609.hva.2016.12.037.

LIU Wei, SU Zhenxi, QI Jiong, et al. Investigation into the Purification and Separation Technology for SF₆ Gas Mixtures Used in Electrical Apparatus[J]. High voltageapparatus, 2016, 52(12): 227-231. DOI： 10.13296/j.1001-1609.hva.2016.12.037.

摘要

为解决SF

气体的温室效应及低温易液化问题的日益突出

、SF

/CF

等混合绝缘气体被认为是目前最有发展前景的替代介质

开始在气体断路器（GIC）以及气体输电管线（GIL）、GIS母线等非灭弧气室中推广应用。然而

大规模推广应用前

必须先解决混合气体的回收、净化处理等关键问题。由于SF

混合绝缘气体与纯SF

气体性质上有较大的区别

文中针对SF

和SF

/CF

混合绝缘气体特性

提出了用多级高分子膜、深冷相变分离和低温精馏方法联用的混合气体分离净化方案

经过处理后能得到较高纯度的SF

气体和CF

气体

纯度达到99%

可直接排放至大气。

Abstract

To address the issues associate with SF

such as its greenhouse effect and liquefaction at low temperature

and SF

/CF

gas mixtures are viewed as the most promising substitute for SF

and have started to be used in non-arcing insulation chambers

such as in gas-insulated circuit breaker（GIC）

gas-insulated transmission line（GIL） and GIS bus duct（GIB）. Before SF

gas mixtures are widely used

key issues associated with gas mixture ha

ndling and recycling have to be adequately addressed. Since SF

gas mixtures are remarkably different from pure SF

gas in their properties

based on the insulating characteristics of SF

and SF

/CF

gas mixtures

a technical procedure combining multi-polymeric membrane

cryogenic separation and cryogenic distillation has been proposed to purify the gas mixture. After the separation process

and CF

gas of very high purity are obtained and the concentration of N

can be as high as 99%

which enables its direct discharge into the atmosphere.

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Investigation into the Purification and Separation Technology for SF6 Gas Mixtures Used in Electrical Apparatus

DOI：10.13296/j.1001-1609.hva.2016.12.037

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Investigation into the Purification and Separation Technology for SF₆ Gas Mixtures Used in Electrical Apparatus