Production device and method for gasified wastewater crystal salt

Abstract

The invention relates to a production device for gasified wastewater crystal salt. The device comprises a reduction auxiliary unit, a reduction unit and a salt crystallization unit. The reduction auxiliary unit and the reduction unit are each provided with a dosing module. The dosing module is used for controlling the adding amount of the first component and / or the second component and the flowing direction of the gasified wastewater after dosing through the arrangement mode of at least two valve assemblies arranged on a pipeline of the dosing module. The invention also relates to a production method of the gasified wastewater crystal salt. By controlling the adding amount of the first component and / or the second component and controlling the opening and closing of the valve assembly, the mixing ratio of the first component and the second component, the adding time and the lasting time of the first component and the second component and the flowing direction after dosing can be flexibly subjected to combined control; therefore, the problems that in the prior art, medicine is excessive, stopping is slow, and adjustment is difficult are solved.

Description

technical field [0001] The invention relates to the technical field of crystalline salt, in particular to a production device and method for crystalline salt of gasification wastewater. Background technique [0002] With the development of the chemical industry, zero-discharge treatment of various types of wastewater produced by the chemical industry is an urgent problem to be solved, such as the energy-saving and emission-reduction treatment of gasification wastewater produced by nitrogen fertilizer production plants. In the prior art, in order to achieve the zero-emission standard, a reduction membrane is often used and auxiliary dosing is used. However, during the whole zero-emission process, the dosing operations that need to be performed in many places are only simple lifting pump additions, and it is impossible to precisely control the dosing. The amount of the drug is not sufficient, and it is also impossible to carry out the adequate mixing of the drug and the wastew...

AI Technical Summary

Problems solved by technology

The defect of this patent is that the method of adding each drug is simple, prone to excessive and small amounts of problems, and its mixing ratio and flow channel cannot be regulated, and it cannot flexibly deal with wastewater with different pH values, different COD and different ion contents. Therefore, the zero-emission standard cannot be achieved

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