Preparation method and preparation device of hydrobromic acid

Abstract

The invention discloses a preparation method of hydrobromic acid. The method comprises the following steps: heating low-quality bromine which cannot be utilized in the prior art to a spontaneous combustion temperature, carrying out combustion synthesis with hydrogen, removing impurities, condensing and the like to prepare the hydrobromic acid. The invention further discloses a corresponding preparation device. The preparation device comprises a bromine storage tank, a bromine buffer tank, a vaporization device, a combustion furnace, a separator, a condenser, a filter, a first absorption tower and a product storage tank which are sequentially communicated through pipelines and valves. The combustion furnace is also provided with a gas inlet sleeve; a bromine steam conveying pipe is arranged between the vaporization device and the combustion furnace, and a heating device is arranged on the bromine steam conveying pipe; and the first absorption tower is also provided with a tail gas outlet which is communicated with the second absorption tower through the pipeline. The device and the method overcome the defect that in the prior art, low-quality bromine cannot be used for preparing hydrobromic acid, and have the advantages that raw materials are easy to obtain, a heating device is small, the process is simple and safe, the effects of waste recycling, environment friendliness, energy conservation and consumption reduction are achieved, and economic benefits are remarkable.

Description

technical field [0001] The invention belongs to the field of hydrobromic acid preparation, and relates to a preparation method and a preparation device of hydrobromic acid. Background technique [0002] Hydrogen bromide is used in the manufacture of various bromine compounds, and can also be used in industries such as medicine, dyes, and spices. It is used in the manufacture of various inorganic bromides such as hydrobromic acid, potassium bromide, lithium bromide, calcium bromide, etc. Compounds such as methyl bromide, ethyl bromide, etc. At present, the synthesis of hydrogen bromide mainly includes direct combustion synthesis of hydrogen and bromine, and the direct combustion synthesis process uses hydrogen and bromine combustion reaction to obtain hydrogen bromide. [0003] Patent CN1175549 (Application No. CN97117188.2 Preparation method of hydrogen bromide gas and its equipment) uses impregnated graphite and other high-temperature resistant materials to make a hydrogen...

AI Technical Summary

Problems solved by technology

[0006] The first technical problem to be solved by the present invention is: provide a kind of preparation method of hydrobromic acid, overcome in prior art can not utilize low-quality bromine (impurity The content is 0.5%wt~3%wt) to prepare hydrobromic acid, by heating up to autoignition temperature, combusting with hydrogen, removing impurities, condensing and other measures, hydrobromic acid is prepared, which reduces the environmental hazards caused by direct discharge , It has the effects of waste recycling, environmental friendliness, energy saving and consumption reduction

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