System and method for rapid recovery of mixed insulation gas

A technology of mixed insulating gas and recovery system, which is applied in the direction of separation methods, chemical instruments and methods, sulfur and halogen compounds, etc., which can solve the problems of high equipment, material and transportation costs, difficult recovery work and heavy workload, etc., and achieve reduction Difficulty and workload, reduced demand, good separation effect

Pending Publication Date: 2017-12-05
ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER +1
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  • Abstract
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Problems solved by technology

[0004] In summary, the prior art is recovering SF 6 In the mixed gas, there are problems of dif

Method used

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  • System and method for rapid recovery of mixed insulation gas
  • System and method for rapid recovery of mixed insulation gas
  • System and method for rapid recovery of mixed insulation gas

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] The object of the present invention is to provide a system and method for rapid recovery of mixed insulating gas to solve the problems existing in the prior art.

[0032] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] This embodiment provides a mixed insu...

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Abstract

The invention discloses a system and method for rapid recovery of mixed insulation gas. The system comprises a pretreatment module, a mixed gas membrane separation module, a SF6 liquefaction and storage module and an exhaust gas treatment module. The method comprises feeding mixed insulation gas treated by the pretreatment module into the mixed gas membrane separation module, carrying out initial separation on SF6 and N2 through selective permeability of a separation membrane, further purifying the high concentration SF6 gas subjected to initial separation through a secondary membrane, carrying out liquid storage in a storage tank, feeding N2 subjected to initial separation into the exhaust gas treatment module, carrying out innocent treatment so that the N2 satisfies the safe discharge requirements and carrying out evacuation. The system and method have good separation effects on SF6 gas, acquire separated SF6 gas having very low N2 content, continuously store a large amount of liquid SF6 and reduce a use amount of containers for storing and recovering gas SF6, recovery difficulty, work load and the cost of equipment, materials and transportation.

Description

technical field [0001] The invention relates to the technical field of tail gas recovery, in particular to a system and method for rapid recovery of mixed insulating gas. Background technique [0002] Sulfur hexafluoride (SF 6 ) gas is widely used in the power industry because of its excellent insulation and arc extinguishing properties. However, the greenhouse effect of sulfur hexafluoride is significant, and it is one of the six greenhouse gases prohibited in the Kyoto Protocol, so it needs to be strictly controlled during use. In order to adapt to the new international environmental protection requirements and reduce greenhouse gas emissions, mixed insulating gas (SF 6 +N 2 , SF 6 +CO 2 , SF 6 + air, etc.) to replace pure sulfur hexafluoride insulating gas and reduce the amount of sulfur hexafluoride gas. Geneva built the world's first SF 6 , N 2 Mixed gas-insulated metal-enclosed transmission line (GIL) and put into operation for many years, greatly reducing SF ...

Claims

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Application Information

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IPC IPC(8): B01D53/22F25J1/02C01B17/45
CPCB01D53/226B01D53/229F25J1/02C01B17/453Y02P20/151
Inventor 苏镇西马凤翔祁炯李建国汪宪忠朱峰陈英朱会李浩申红志
Owner ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER
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