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Technology for coarse bromine purifying using hydrobomic acid enriched liquid

A technology of enrichment solution and hydrobromic acid, which is applied in the direction of bromine/hydrogen bromide, can solve environmental pollution and other problems, and achieve the effects of solving environmental pollution problems, saving usage, and reducing production costs

Active Publication Date: 2007-10-03
天津海晶科技发展有限公司
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Problems solved by technology

[0003] The object of the present invention is to provide a kind of process that utilizes hydrobromic acid enrichment liquid to carry out crude bromine purification, this process uses hydrobromic acid enrichment liquid to carry out the crude bromine purification instead of rectification process to realize the purpose of product purification, saves on the one hand Reduce the amount of steam used, reduce production costs, and on the other hand solve the environmental pollution problem caused by exhaust exhaust

Method used

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  • Technology for coarse bromine purifying using hydrobomic acid enriched liquid

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Embodiment Construction

[0012] The process of purifying crude bromine by using hydrobromic acid enrichment solution of the present invention will be described in conjunction with the accompanying drawings and examples.

[0013] As shown in Figure 1, the process of utilizing hydrobromic acid enrichment solution of the present invention to carry out crude bromine purification, its process steps are realized in this way.

[0014] Step 1, oxidative distillation, import the hydrobromic acid enriched liquid into the distillation tower, feed a certain amount of chlorine gas, the chlorine distribution rate is 100% to 110%, that is, the ratio of the chlorine gas quality and the bromine quality in the raw material is the distribution ratio. chlorine rate. At the same time, steam is introduced so that the top temperature of the distillation tower is 50°C to 80°C, the hydrobromic acid enriched liquid is oxidized, and after distillation, cooling, and separation, crude bromine and bromine-containing aqueous soluti...

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Abstract

A process for preparing high-purity bromine from the hydrobromic acid-enriched liquid includes such steps as oxidizing-distilling, pre-heating, refining, separating and recovering the tailing gas.

Description

technical field [0001] The invention relates to a process for preparing refined bromine, in particular to a technique for purifying crude bromine by using hydrobromic acid enrichment liquid. Background technique [0002] The general process for preparing refined bromine is to oxidize and distill the hydrobromic acid enriched liquid obtained in the blowing process to obtain crude bromine, and then enter the rectification tower after the crude bromine is cooled, and then carry out multiple rectification and purification with steam to discharge impurities. Refined bromine is then produced by cooling and separation. On the one hand, the above-mentioned process needs to consume a large amount of steam for crude bromine rectification, which wastes steam energy; At the same time, the exhaustion of the tail gas also leads to the loss of some reusable components, which increases the production cost. Contents of the invention [0003] The object of the present invention is to prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B7/09
Inventor 张德强金广俊刘文斌杨继林李萌杨金水张佩林张连军
Owner 天津海晶科技发展有限公司
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