Sulfur hexafluoride gas purification system

A technology of sulfur hexafluoride gas and purification system, applied in inorganic chemistry, sulfur compounds, sulfur and halogen compounds, etc., can solve the problems affecting the service life of the recovery device, corrosion of the recovery device, equipment accidents, etc., to improve the reuse rate , reduce the purification process, improve the efficiency of the effect

Active Publication Date: 2020-05-22
HENAN PINGGAO ELECTRIC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When repairing high-voltage switchgear and recovering gas, the acidic substances in the decomposition products of sulfur hexafluoride gas will corrode important parts such as pipelines and compressors in the recovery device; the moisture in the gas to be recovered will combine with the decomposition products under certain conditions Hydrolysis produces H 2 SO 4 , will also cause corrosion to the recovery device, thereby affecting the service life of the recovery device, and even causing serious equipment accidents

Method used

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  • Sulfur hexafluoride gas purification system
  • Sulfur hexafluoride gas purification system

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Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1 of the sulfur hexafluoride gas purification system in the present invention: the sulfur hexafluoride gas purification system in the present invention can purify the sulfur hexafluoride gas containing impurities to obtain dry, pure and reusable Sulfur hexafluoride gas. When in use, the sulfur hexafluoride gas purification system is arranged between the gas-insulated electrical equipment filled with sulfur hexafluoride gas and the air extraction equipment. The air extraction equipment is equipped with an air pump, which can purify and recycle the electrical equipment. The sulfur hexafluoride gas is pumped into the purification system, and the sulfur hexafluoride gas is pumped into the extraction equipment after being purified by the purification system.

[0051] Such as figure 1 and figure 2 As shown, the sulfur hexafluoride gas purification system is provided with an air intake pipeline at the head end, and the air intake joint 01 is located at the front ...

Embodiment 2

[0080] Embodiment 2 of the sulfur hexafluoride gas purification system in the present invention: the difference from the above-mentioned embodiments is that the sulfur hexafluoride gas purification system in this embodiment is provided with an air intake pipeline, an alkali The washing unit, drying unit and gas outlet pipeline are no longer provided with branch pipelines, so that sulfur hexafluoride gas can only pass through the alkali cleaning unit and drying unit in sequence during purification, and cannot pass through the alkali cleaning unit and drying unit.

Embodiment 3

[0081] Embodiment 3 of the sulfur hexafluoride gas purification system in the present invention: the difference from the above embodiments is that the sulfur hexafluoride gas purification system in this embodiment is provided with branch pipelines, and the branch pipelines are only for six Sulfur fluoride gas passes over the non-alkaline cleaning line of the alkaline cleaning unit. In other embodiments, the branch pipeline may only be a purification-free pipeline for the sulfur hexafluoride gas to pass through the alkali cleaning unit and the drying unit at the same time.

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Abstract

The present invention relates to a sulfur hexafluoride gas purification system, which comprises: an alkaline washing unit filled with an alkaline medium and used for removing acidic components of a gas when sulfur hexafluoride gas is introduced; a drying unit filled with a drying medium and used for removing moisture of the gas when the sulfur hexafluoride gas is introduced, wherein the alkali washing unit is connected with the drying unit in series, the front end of the drying unit is communicated with the rear end of the alkali washing unit, the inlet of the alkali washing unit is connectedwith a gas inlet pipeline used for being connected with gas insulation electrical equipment, and the outlet of the drying unit is connected with a gas outlet pipeline used for being connected with gasextraction equipment. According to the invention, the alkaline medium in the alkaline washing unit can be subjected to an acid-alkali neutralization reaction with the acidic component in sulfur hexafluoride gas, and the drying unit is located at the downstream of the alkaline washing unit and can absorb the moisture contained in the sulfur hexafluoride gas due to neutralization reaction and / or the sulfur hexafluoride gas, so that the sulfur hexafluoride gas is purified by the alkaline washing unit and the drying unit to obtain dry and pure sulfur hexafluoride gas.

Description

technical field [0001] The invention relates to a sulfur hexafluoride gas purification system. Background technique [0002] In the power industry, sulfur hexafluoride gas is a widely used insulating medium, and has been widely used in high-voltage electrical equipment such as gas-insulated combined electrical appliances (GIS), high-voltage circuit breakers, and transmission lines (GIL). After the high-voltage switchgear is used for a long time, the water content of sulfur hexafluoride gas in the high-voltage switchgear exceeds the standard. In addition, due to the action of the high-voltage electric field and the influence of factors such as equipment fault discharge, the sulfur hexafluoride gas will decompose and produce HF, SO 2 、H 2 S, SF 2 , S 2 f 2 , SF 4 , S 2 f 10 、SOF 2 , SO 2 f 2 , S 2 f 10 O and other toxic, harmful and highly corrosive decomposition components. When repairing high-voltage switchgear and recovering gas, the acidic substances in the de...

Claims

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Application Information

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IPC IPC(8): C01B17/45B01D53/78B01D53/26
CPCC01B17/453B01D53/78B01D53/261
Inventor 刘朋亮田向阳张建飞张鹏飞王玉春刘焱涛刘天超谢东晨
Owner HENAN PINGGAO ELECTRIC
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