A kind of production device and method for manufacturing electronic grade hydrogen chloride

Abstract

The invention discloses a production device and method for producing electronic grade hydrogen chloride. The device comprises an adsorption tower, a cooler, a raw material rectification tower, a first weight removal tower, a flash tank, a reactor, a light removal tower, a motor tower, a first weight removal tower, a Two weight-removing towers and membrane separation devices, the outlet of the top of the adsorption tower is connected to the feed port of the tower kettle of the raw material rectification tower through the cooler; the inlet of the tower kettle of the first weight removal tower is connected to the bottom of the raw material rectification tower. ; The inlet of the flash tank is connected to the top of the first weight-removing tower; the bottom of the reactor is connected to the top of the flash tank; the feed port of the tower reactor of the light-removing tower is connected to the top of the reactor; The bottom of the tower is connected; the second weight-removing tower is connected with the tower top or tower kettle of the motorized tower; the membrane separation device is connected with the tower top of the second weight-removing tower. The method utilizes by-product and recovered hydrogen chloride or synthetic hydrogen chloride as raw materials, fully utilizes resources, fully recovers industrial by-product hydrogen chloride under the conditions of high efficiency and energy saving, and has higher economic and environmental benefits.

Description

technical field [0001] The invention relates to the technical field of electronic-grade hydrogen chloride preparation, and more particularly to a production device and method for producing electronic-grade hydrogen chloride. Background technique [0002] Electronic grade hydrogen chloride is a kind of inorganic acid. It is a colorless gas at room temperature and can be easily absorbed by water to form a strong corrosive liquid. High-purity electronic grade hydrogen chloride is an industrial basic material with broad application prospects, especially in semiconductor integrated circuits, metal smelting, solar cells, pharmaceuticals and other fields. In recent years, with the further deterioration of the energy crisis and air pollution, the economic and technological development of various countries in the world has gradually turned to low-carbon economy and clean energy technology based on environmental protection. direction. The further development of large-scale integrate...

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Problems solved by technology

[0003] However, the traditional analysis method and hydrochloric acid desorption method are difficult to meet. The high water content of the produced electronic grade hydrogen chloride makes the method process severely corrosive, high production cost, and small production capacity, which cannot meet the rapidly developing downstream integrated circuits and solar photovoltaic industries. Market demand; at the same time, the treatment of a large amount of industrial by-product hydrogen chloride is difficult and energy-intensive, and cannot be fully utilized

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