Gas purification system for metallic lithium glove box

Abstract

The invention discloses a gas purification system for a metallic lithium glove box. The system comprises a gas blower device, a gas reaction device, a gas purification device and a regenerated gas cooling device, wherein a glove box gas inlet and a glove box gas outlet are formed in the metallic lithium glove box; the glove box gas outlet, the gas blower device, the gas reaction device, the gas purification device, the regenerated gas cooling device and the glove box gas inlet are in sealed communication through pipes in sequence. According to the gas purification system for the metallic lithium glove box, impurities, capable of reacting with metallic lithium, in inert gas and a water and oxygen removing agent in regenerated gas can be removed effectively, temperature of the regenerated gas can be reduced effectively, the pipeline is prevented from being block, quality of final metallic lithium is improved, and refrigeration load of the glove box is reduced.

Description

technical field [0001] The invention relates to a purification system, in particular to a gas purification system for a metal lithium glove box. Background technique [0002] In the process of metal lithium smelting and deep processing, in order to obtain metal lithium with less impurity content and higher purity, for example, in the vacuum distillation purification process, metal lithium with lower purity can be obtained through sedimentation filtration, vacuum smelting and other processes to obtain high-purity metal lithium. Casting is carried out under the protection of inert gas in the glove box, and the current industrial inert gas contains extremely small amounts of oxygen and nitrogen, which are easy to react with metal lithium during casting, so the atmosphere of the glove box is particularly important, and the glove box The gas purification system is the key equipment to maintain the atmosphere in the glove box. At present, the gas purification used in metal lithiu...

AI Technical Summary

Problems solved by technology

At present, the gas purification used in metal lithium glove boxes is mostly to generate regeneration gas after removing water and oxygen, and return the gas to the glove box through the pipeline. This method has many disadvantages: the gas purification is not complete, and there is no nitrogen removal. It is difficult to meet the requirements of casting metal lithium, which reduces the quality of metal lithium; the regeneration gas contains a large amount of dehydration and oxygen removal agent, which will easily block the pipeline after long-term operation, and the dehydration and oxygen removal agent will enter the glove box and adhere to the Lithium metal and the mold will affect the quality of lithium metal; in addition, the high temperature of regenerated gas will affect the surface color of lithium metal, and also increase the cooling load of the glove box

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