Fluorescent whitening agent waste liquid concentration device and treatment method thereof

Abstract

The invention relates to a fluorescent whitening agent waste liquid concentration device and a treatment method thereof. The device comprises a primary effect evaporator, a secondary effect evaporatorand a triple effect evaporator, wherein a tube layer of the triple effect evaporator is connected with a raw material storage tank; the triple effect evaporator and the secondary effect evaporator are respectively connected with a triple effect gas-liquid separator and a secondary effect gas-liquid separator; outlets of the triple effect gas-liquid separator and the secondary effect gas-liquid separator are respectively connected with tube layers of the secondary effect evaporator and the primary effect evaporator; the tube layer of the primary effect evaporator is connected with a dischargepipeline; a shell layer of the primary effect evaporator is connected with shell layers of a vapor generator, a first condensed water storage tank and the secondary effect evaporator respectively; gasoutlets of the secondary effect gas-liquid separator and the triple effect gas-liquid separator are respectively connected with the shell layer of the triple effect evaporator and the shell layer ofa condenser; the shell layer of the condenser is also connected with the tube layers of the primary effect evaporator and the tube layer of the secondary effect evaporator; the shell layer of the condenser is connected with a secondary condensed water storage tank; the primary effect evaporator is an internal circulation evaporator; and both the secondary effect evaporator and the triple effect evaporator are falling film evaporators. By adopting the fluorescent whitening agent waste liquid concentration device and the treatment method thereof, the system operation is stable, the operation cost is low, and the service life is long.

Description

technical field [0001] The invention relates to a waste liquid treatment device, in particular to a fluorescent whitening agent waste liquid concentration device and a treatment method thereof. Background technique [0002] The main component in the concentration of fluorescent whitening agent waste liquid is sodium chloride. Sodium chloride can be recovered by concentrating fluorescent whitening agent waste liquid. However, some traditional concentration equipment has problems of low concentration efficiency and equipment blockage. Contents of the invention [0003] In view of the above shortcomings, the applicant has conducted research and improvement, and provides a fluorescent whitening agent waste liquid concentration device and a treatment method thereof. [0004] The technical scheme adopted in the present invention is as follows: [0005] A fluorescent whitening agent waste liquid concentration device, including a first-effect evaporator, a second-effect evaporato...

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Problems solved by technology

[0002] The main component in the concentration of fluorescent whitening agent waste liquid is sodium chloride, and sodium chloride can be recovered by concentrating fluorescent whitening agent waste liquid, but some traditional concentration equipment has low concentration efficiency and equipment blockage problems

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