High-concentration mother liquor granulating device and method

Abstract

The invention discloses a high-concentration mother liquor granulating device and method. The high-concentration mother liquor granulating device comprises a spray tower, a conveyor, a fluidized bed,a bag-type dust collector and a tail gas induced draft fan, wherein a hot air inlet is formed in the top of the spray tower; a first hot air outlet and a second hot air outlet are formed in the bottomof the spray tower; one part of mother liquor communicates with a liquid inlet of the spray tower, and the other part of mother liquor communicates with a liquid inlet of the fluidized bed; powder discharged from the spray tower is conveyed to the fluidized bed by the conveyor; the first hot air outlet is connected with a hot air inlet of the fluidized bed; the fluidized bed is also provided witha cold air inlet; the second hot air port communicates with a tail gas outlet of the fluidized bed and then enters an air inlet of the bag-type dust collector; and the tail gas induced draft fan communicates with a gas outlet of the bag-type dust collector. According to the invention, a combined process combining spray drying and a fluidized granulation bed is adopted, hot air temperature, atomized particles and treatment capacity can be adjusted according to the characteristics of the mother liquor, and heat can be further recycled and the granularity of materials can be improved through thefluidized bed, so low energy consumption, continuity and adaptation to different mother liquor are achieved.

Description

technical field [0001] The invention relates to the technical field of chemical engineering and wastewater treatment containing solid mother liquor, in particular to a high-concentration mother liquor granulation device and a granulation method. Background technique [0002] For the field of chemical industry or wastewater treatment, it is often encountered the problem of treating high-concentration salt-containing mother liquor (or wastewater). This kind of mother liquor generally has high COD, high boiling point, and high salt content. If conventional treatment methods are used directly, such as: paddle drying, spray drying, rotary drying, etc., these methods will have serious equipment wear, high energy consumption, and discontinuous operation. and other shortcomings; at the same time, there is also a certain granularity requirement for the recyclables that need to be processed in the later stage. Contents of the invention [0003] The main technical problem to be solv...

AI Technical Summary

Problems solved by technology

This kind of mother liquor generally has high COD, high boiling point, and high salt content. If conventional treatment methods are used directly, such as: paddle drying, spray drying, rotary drying, etc., these methods will have serious equipment wear, high energy consumption, and discontinuous operation. and other shortcomings; at the same time, there is also a certain granularity requirement for recyclables that need to be processed in the later stage

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