High-purity hydrogen chloride production apparatus and hydrogen chloride production process based thereon

Abstract

The invention provides a high-purity hydrogen chloride production apparatus and a hydrogen chloride production process based thereon, wherein the high-purity hydrogen chloride production apparatus comprises: a synthetic furnace communicated with two intake tubes; one intake tube is used for introducing hydrogen, the other intake tube is used for introducing chlorine; the synthetic furnace is communicated with the charge end of a compressor through a first pipeline; the discharge end of the compressor is communicated with the middle of a primary rectifying column through a second pipeline; a primary condenser is mounted at the top of the primary rectifying column; a primary reboiler is mounted at the bottom of the primary rectifying column; the top of the primary rectifying column is communicated with the middle of a secondary rectifying column through a third pipeline; the top of the secondary rectifying column is provided with a secondary condenser; the bottom of the secondary rectifying column is provided with a secondary reboiler. The high-purity hydrogen chloride production apparatus and the hydrogen chloride production process based thereon can solve the problem that in the prior art a vacuum pump is easy to damage since residual hydrogen chloride in a storage tank is not replaced while gas in the storage tank is removed directly through the vacuum pump.

Description

technical field [0001] The invention relates to hydrogen chloride production, in particular to a high-purity hydrogen chloride production equipment and a hydrogen chloride production process based thereon. Background technique [0002] In the prior art, a synthesis furnace is often used, so that chlorine and hydrogen are combusted in the synthesis furnace to generate hydrogen chloride, but pure hydrogen chloride liquid cannot be obtained. [0003] Chinese patent discloses a method and device for producing high-purity hydrogen chloride with the application number CN201110220776.0, wherein the hydrogen chloride and / or low-purity hydrogen chloride produced by electrolysis or by-products of chemical processes are made to have high Water, chlorine, and heavy metals at the volatile point pass through the first-stage distillation tower composed of a reboiler, column and cooler, and are discharged through the outlet on one side of the lower reboiler. The upper cooler liquefies most...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a high-purity hydrogen chloride production equipment and a hydrogen chloride production process based on it, which solves the problem in the prior art that the vacuum pump is easily damaged because the gas in the storage tank is removed directly through the vacuum pump without replacing the residual hydrogen chloride in the storage tank. question

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