Chlorination control method based on visual recognition in bromine distillation process, and apparatus

Abstract

The invention discloses a chlorination control method based on visual recognition in a bromine distillation process, and an apparatus, and belongs to the field of bromine extraction equipment. According to the method, according to the optimal bromine quality in a bromine distillation process, the optimal color depth interval of the reactant in a corresponding distillation tower and the opening degree of the control valve on a chlorine gas inlet pipe are determined in advance; during the operating of the bromine distillation process, the color depth of the reactant in the distillation tower isreal-timely monitored through a visual recognition method, and whether the color depth of the current reactant is within an optimal color depth interval is determined; and if the color depth of the current reactant deviates from the optimal color depth interval, the opening degree of the control valve is adjusted within the control valve opening degree, such that the color of the current reactantis restored to the optimal color depth interval. According to the present invention, with the method, the adding amount of chlorine gas can be controlled through visual recognition to eliminate the influence of human factors so as to ensure the yield and the quality of bromine.

Description

technical field [0001] The invention belongs to the field of bromine extraction equipment, and in particular relates to a visual recognition-based chlorine addition control method and device in a bromine distillation process. Background technique [0002] Distillation is the final step in the bromine production process, where bromine is purified by reacting with chlorine gas and steam. The effect of distillation control directly affects the yield and quality of bromine. The traditional adjustment mode is to manually observe the color of the glass tubes at the top and bottom of the distillation tower, and adjust the amount of chlorine added according to the color. Uncertain factors of human control will lead to excessive or insufficient chlorine gas. Excessive addition of chlorine gas will affect the quality of bromine, while insufficient addition of chlorine gas will affect the extraction rate of bromine. [0003] Therefore, how to accurately and automatically control the ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the amount of chlorine added cannot be accurately controlled in the bromine distillation process

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