High-concentration saline wastewater energy-saving crystallization device

Abstract

The invention relates to an energy-saving crystallization device for high-concentration saline wastewater, which belongs to the technical field of environmental protection equipment. It mainly includes raw material storage tank, raw material pump, self-evaporator, No. 1 vacuum crystallizer, No. 2 vacuum crystallizer, No. 3 vacuum crystallizer, hydrocyclone, slurry tank, centrifuge, characterized in that: the raw material The storage tank is sequentially connected to the raw material pump, self-evaporator, No. 1 vacuum crystallizer, No. 2 vacuum crystallizer, No. 3 vacuum crystallizer, hydrocyclone, slurry bucket and centrifuge. The top of the self-evaporator is connected to a The No. 1 surface cooler and the No. 1 surface cooler are connected to the water ring vacuum pump through the pipeline, and the water ring vacuum pump is connected to the No. 1 steam-water separator through the pipeline, and the slurry outlet of the self-evaporator is connected to the No. 1 vacuum crystallizer slurry inlet through the pipeline. Compared with intermittent crystallization, the comprehensive energy consumption of the present invention is 30% of that of intermittent crystallization, and the grain size of the crystallization is uniform, the equipment structure is simple, no fouling, no scarring, long-term continuous production and the like.

Description

technical field [0001] The invention relates to an evaporation crystallization device, in particular to an energy-saving crystallization device for high-concentration saline wastewater, and belongs to the technical field of environmental protection equipment. Background technique [0002] At present, the intermittent crystallization process in cooling crystallization accounts for more than 95% of all domestic industries. The labor productivity is low, mainly due to manual operation, the product quality cannot be guaranteed, and the comprehensive energy consumption is high. The supporting refrigeration system and brine low-temperature water system account for The ground area is large, the power consumption is large, and the corrosion is high. Some of them adopt the freeze crystallization process, and the pipe plugging and scarring are prominent. They need to be cleaned frequently, and the labor intensity is high. flour), dehydration is difficult, and caking has seriously affe...

AI Technical Summary

Problems solved by technology

[0002] At present, the intermittent crystallization process in cooling crystallization accounts for more than 95% of all domestic industries. The labor productivity is low, mainly due to manual operation, the product quality cannot be guaranteed, and the comprehensive energy consumption is high. The supporting refrigeration system and brine low-temperature water system account for The ground area is large, the power consumption is large, and the corrosion is high. Some of them adopt the freeze crystallization process, and the pipe plugging and scarring are prominent. They need to be cleaned frequently, and the labor intensity is high. Flour), dehydration is difficult, agglomeration seriously affects the quality of the product

Images