Industrial bromine refining method

A refining method and industrial technology, applied in the direction of bromine/hydrogen bromide, etc., can solve the problems of unsatisfactory refining effect, affecting absorption effect, complicated production process, etc., and achieve the effect of small investment, simple operation and simple production process

Active Publication Date: 2013-01-02
天津长芦汉沽盐场有限责任公司
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AI Technical Summary

Problems solved by technology

Since the rectification equipment and the separation equipment are separated, the production process of this refining method is complicated, the equipment is huge, the investment is large, the operation is difficult, the safety performance is low, and the refining effect is poor.
There are also some production units that add raw material brine to absorb free chlorine, but this method mostly adopts spray or tube absorption, because liquid bromine and raw material brine cannot fully contact, which affects the absorption effect, so in actual operation The refining effect is not ideal

Method used

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  • Industrial bromine refining method

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Embodiment Construction

[0021] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0022] A refining method for industrial bromine is to condense distilled bromine vapor into liquid bromine through a crude bromine condenser, then adopt two-stage mixed absorption and two-stage separation steps to absorb free chlorine in the liquid bromine, and then make the crude bromine Bromine is refined by the method. The concrete steps of this method are:

[0023] (1) After the bromine vapor discharged from the distillation tower is condensed into crude liquid bromine by the crude bromine condenser, it enters the horizontally installed primary static state with the normal temperature raw material liquid whose volume flow rate is 70% of the crude liquid bromine with the material flow direction perpendicular to each other. Mixer, fully mi...

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Abstract

The invention discloses an industrial bromine refining method, where distilled bromine vapor is condensed into liquid bromine by a crude bromine condenser and free chlorine in the liquid bromine is absorbed so as to refine the crude bromine. The method is characterized in that procedures of two-step mixed absorption and two-step separation are adopted to absorb the free chlorine in the liquid bromine; and in the two-step mixed absorption procedure, the crude liquid bromine and material solution are simultaneously introduced into a static mixer and are mixed fully, so as to absorb the free chlorine in the liquid bromine by the material solution. Due to the adoption of the static mixer, the free chlorine in the crude liquid bromine can thoroughly contact the absorption solution to improve dissolution effect and achieve the purpose of high-efficiency chlorine removal. The method has the advantages of simple process, less investment, easy operation, high safety and good bromine refining effect.

Description

[0001] Field: [0002] The invention relates to a method for producing industrial bromine, in particular to a method for refining crude bromine in industrial bromine production. Background technique: [0003] At present, in the production process of domestic industrial bromine, the bromine steaming process is mainly carried out by using the mother liquor of potassium production, and the bromine blowing process is carried out by using the medium and low brine without salt production and underground brine. Chlorine gas is used for oxidation, and its chlorine distribution rate is generally about 115%, so the distilled crude bromine must be refined and dechlorinated to meet the industry standard of industrial bromine. [0004] At present, the refining method of crude bromine in the process of producing industrial bromine in China is to enter the bromine vapor distilled from the distillation tower into the rectification tower equipped with a condenser. According to the property tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B7/09
Inventor 刘立平马信华韩丰
Owner 天津长芦汉沽盐场有限责任公司
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