Hydrogen-added sulfur hexafluoride thermocatalytic cyclic degradation device

Abstract

The hydrogen-added sulfur hexafluoride thermocatalytic cyclic degradation device comprises a raw material gas tank, a preprocessor, a first-stage pressure controller, a reactor, a second-stage pressure controller and an alkali washing pool which are sequentially connected through pipelines, the molecular sieve and the three-stage pressure controller are sequentially connected with an exhaust port of the alkaline washing pool through a pipeline; an exhaust outlet of the third-stage pressure controller is connected to a pipeline between the raw material gas tank and the pretreater through a pipeline with a ball valve; a circulating branch pipe which is connected in parallel with the molecular sieve and is provided with a ball valve is connected between the outlet of the molecular sieve and the outlet of the alkaline washing pool; branch pipes are respectively arranged at the intersection outlet end of the circulating branch pipe and the outlet of the molecular sieve and a pipeline between the secondary pressure controller and the alkaline washing pool; and the branch pipes are connected to a tail gas analysis and test system. The device not only can provide a gas chamber for reaction of SF6 and H2 with a catalyst, but also can provide a pipeline for recycling test waste gas. The device has the characteristics of high safety, sensitive temperature control, environment friendliness, low cost and the like.

Description

technical field [0001] The invention belongs to sulfur hexafluoride (SF 6 ) The technical field of gas thermal catalytic degradation, and also relates to the recycling and reuse of reaction gases, specifically involving the addition of H 2 SF 6 Thermal catalytic degradation device and gas recycling device. Background technique [0002] SF 6 Due to its excellent insulating properties and good chemical stability, it is widely used as an insulating medium in many fields of power systems, including gas-insulated metal-enclosed switchgear (GIS) equipment, circuit breakers, transformers and Other medium voltage electrical equipment. while SF 6 In addition to its excellent insulating properties, it is also a gas with a strong greenhouse effect, SF 6 The global warming potential (GWP) of the gas is as high as 23,500, and the SF 6 It is very stable in the atmosphere and has a lifespan of 3,200 years. It has been listed as a restricted greenhouse gas by the Kyoto Protocol. Wit...

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Problems solved by technology

[0003] Existing SF 6 Experimental device for thermocatalytic degradation, such as "O 2 to CePO 4 Thermocatalytic degradation of SF 6 In the pyrolysis test device used in the “Influence of Exhaust Gas”, the catalyst and test gas are placed in a quartz glass tube, and a tube furnace is used to heat the quartz tube. There are two main problems in this pyrolysis system: one is that the catalyst is placed in The glass dish is placed in the middle of the quartz glass tube, so the area where t

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