MVR continuous evaporative crystallization system

Abstract

The invention relates to a MVR continuous evaporative crystallization system which comprises a heating system, an evaporative crystallization system, a crystallization separation system and a condensation system. The heating system comprises a live steam compensation pipeline, a steam compressor and a material preheating device. The evaporative crystallization system comprises a circulation evaporator and a crystallizer. The crystallization separation system comprises a centrifugal machine. The condensation system comprises a condensate collection tank. The circulation evaporator comprises is connected with the condensate collection tank through a condensate water inlet pipe. The material preheating device comprises a primary preheater, a secondary preheater and a tertiary preheater. A second branch pipe, used for conveying live steam, connected to the steam compressor is connected into the tertiary preheater. The condensate collection tank is connected with the secondary preheater through a condensate water outlet pipe. The condensate collection tank is connected with the primary preheater through a non-condensation gas pipe. A non-condensation gas outlet of the primary preheater is connected with a vacuum pump. The MVR continuous evaporative crystallization system has the advantages of being high in heat utilization rate, good in energy-saving performance, low in pollution, high in efficiency and stable in work.

Description

technical field [0001] The present invention relates to an evaporative crystallization system, specifically an MVR continuous evaporative crystallization system. Background technique [0002] Mechanical vapor recompression Mechanical Vapor Recompression technology is a highly efficient, energy-saving and environmentally friendly technology, referred to as MVR. Although many MVR continuous evaporation and crystallization systems using mechanical vapor recompression technology are disclosed in the prior art, there are not many of them in industrial applications. [0003] Industrial materials and industrial waste water often adopt evaporation and concentration process, and the steam consumption is high. In evaporation technology, the evaporator form of multi-effect evaporation is more common. However, in recent years, with the rapid rise of steam prices, the energy consumption of this evaporation process has also increased the burden on the majority of enterprises. In the ex...

AI Technical Summary

Problems solved by technology

In the existing MVR evaporative crystallization system, usually only the secondary vapor is compressed to utilize the potential, and it is only a part of the energy emitted by the entire evaporative crystallization system. The energy emitted in the entire system has not been fully utilized, such as evaporation The non-condensable gas, condensed water, etc. produced in the air not only cause waste of energy, but also cause environmental pollution

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