sf 6 On-line regeneration method of adsorbent in purification treatment device

Abstract

An online adsorbent regeneration method for an SF6 purification treatment device includes the following steps: cutting out a nitrogen inlet pipeline, an SF6 inlet pipeline, a first pipeline, a secondpipeline, a third pipeline, a fourth pipeline, a fifth pipeline, a sixth pipeline and a seventh pipeline; connecting all the pipelines, a heating unit and an adsorption tower as required; mounting valves, a pressure reducing valve, a filter and a vacuum pump on the corresponding pipelines; and performing normal purification treatment, and discharging the obtained purified gas to the outside through a lye tank tail gas outlet. When the adsorption capability of an adsorbent decreases or the processing capacity is lost, inert nitrogen goes through the adsorption tower after being heated in orderto uniformly heat the adsorbent in the adsorption tower, and then the adsorption tower is vacuumized to realize online depressurization and heating regeneration, so uniform distribution of the temperature in the cavity of the adsorption tower is ensured, a heating tube and the sorbent is completely isolated, inadvertent operation of workers, untimely protection of a temperature control system andother hidden dangers are avoided, the problem of airtightness of the device due to loading and unloading is completely solved, the regeneration cycle of the adsorbent is greatly improved, and the recycling of the adsorbent is realized.

Description

technical field [0001] The present invention relates to a kind of SF 6 Purification treatment device, specifically a kind of SF 6 An adsorbent online regeneration method for a purification treatment device. Background technique [0002] As the country strengthens its efforts to control greenhouse gas emissions, and power grid companies 6 (Sulfur hexafluoride) gas recovery, treatment, recycling work, SF 6 The demand for purification treatment equipment is increasing rapidly. The adsorption tower of the device is in SF 6 During the purification process, it plays the role of adsorbing impurities, but the adsorbent in the inner cavity will be saturated after long-term purification treatment, resulting in a decrease in adsorption capacity, or even loss of processing capacity. [0003] The recycling of the adsorbent can be realized through regeneration, which reduces the treatment cost. Both depressurization and heating are beneficial to the desorption of adsorbate or the re...

AI Technical Summary

Problems solved by technology

However, due to the direct contact between the heating tube and the adsorbent and the poor thermal conductivity of the adsorbent itself, it is difficult to ensure uniform heating during online regeneration, and it is easy to burn the micropores of the adsorbent.

At the same time, there are other pressure vessels and pressurized pipelines in the purification treatment device, which may easily cause damage to the heating tube and adsorbent during operation, and even SF 6 The gas is decomposed by the arc to produce a large amount of toxic and harmful gas, which has certain safety risks

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