Novel self-paced and self-stirred reactor for chloride and concentrated sulfuric acid reaction for preparing hydrogen chloride and method

Abstract

The invention discloses a self-paced and self-stirred reactor for chloride and concentrated sulfuric acid reaction. Aiming at a process for producing hydrogen chloride gas by adopting chloride and concentrated sulfuric acid as raw materials and feeding the raw materials into a reaction kettle, a self-paced and self-stirred reaction kettle is designed. On one hand, gas generated by reaction is utilized for controlling the feeding speed of the concentrated sulfuric acid through a liquid seal principle, the feeding rate of solid chloride is interconnected controlled according to pressure in the kettle, and the release rate of the reaction heat and a gas flow is eventually controlled. On the other hand, produced cooling gas is utilized for entering from the bottom part of the reactor so as to carry out bubbling stirring, the cooling gas takes away part of reaction heat in the reactor, and reaction foams can be prevented from gathering and blocking a gas outlet, so that the reactor can produce safely, and the energy consumption is reduced. According to the self-paced and self-stirred reactor for the chloride and concentrated sulfuric acid reaction provided by the invention, the feeding speed of the concentrated sulfuric acid is controlled through the liquid seal principle, the feeding rate of the solid salt is interconnected controlled through pressure, and meanwhile, part of the produced gas circularly enters the reaction kettle so as to be bubbled and stirred, so that the equipment is simple, the investment and the energy consumption of the equipment are reduced, and the equipment is convenient for industrial implementation and operation.

Description

technical field [0001] The invention relates to a method and a device for producing hydrogen chloride, in particular to a method and a device for generating hydrogen chloride by reacting chlorides (sodium chloride, potassium chloride, ammonium chloride, etc.) with concentrated sulfuric acid. Background technique [0002] Hydrogen chloride production usually uses sodium chloride as a raw material to prepare chlorine gas by electrolysis, and then reacts with hydrogen gas in a combustion furnace to prepare hydrogen chloride. The equipment and energy consumption of this production process is relatively high, and the ratio of chlorine gas and hydrogen gas is difficult to accurately control during the production process, which makes it difficult to control the content of free chlorine, and it is also difficult to obtain electronic grade hydrogen chloride gas (hydrogen chloride content ≥ 99.99%). At the same time, with the sharp increase in the output of by-product industrial sal...

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Problems solved by technology

[0004] The technical problem of the present invention is: for the gas produced rapidly due to the fast reaction rate in the process of using chloride (sodium chloride, potassium chloride, ammonium chloride, etc.) and concentrated sulfuric acid as raw materials to enter the reactor to produce hydrogen chloride gas It is easy to form salt-containing foam to block the gas outlet, and the reaction is accompanied by strong exotherm, the reaction process is easy to get out of control and form a high temperature and high pressure explosion

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