Sodium sulfate TVR single-effect evaporation and crystallization system

A single-effect evaporation and crystallization system technology, which can be used in the preparation of alkali metal sulfite/sulfite, alkali metal sulfite/sulfate, alkali metal compounds, etc. The mother liquor does not take recycling measures to achieve the effect of improving the utilization rate, preventing the erosion of raw materials, and having a large practical value

Inactive Publication Date: 2016-09-28
江苏格兰特干燥浓缩设备有限公司
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Problems solved by technology

[0003] At present, the following problems exist in the sodium sulfate TVR single-effect evaporation crystallization system: there is no filtration in the centrifuge, the mother liquor is directly discharged with the crystallization product, no recovery measures are taken for the mother liquor, and the mother liquor passing through the centrifuge cannot be evaporated and crystallized again, resulting in the loss of raw materials waste

Method used

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  • Sodium sulfate TVR single-effect evaporation and crystallization system

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Embodiment Construction

[0011] A sodium sulfate TVR single-effect evaporation crystallization system, comprising a mother liquor tank 1, a centrifuge 2, a preheater 3, a TVR compressor 4, a cooling crystallizer 5 and a condenser 6, the mother liquor outlet of the mother liquor tank 1 and the preheater 3 inlets are connected, the preheater 3 outlets are connected to the cooling crystallizer 5 mother liquor inlet, the TVR compressor 4 steam inlet is connected to the raw steam pipeline 8, the TVR compressor 4 steam outlet is connected to the cooling crystallizer 5 steam inlet, and the cooling crystallizer The material outlet of the device 5 is connected to the centrifuge 2, the cooling water outlet of the cooling crystallizer 5 is connected to the condenser 6, and the centrifuge 2 is connected to the mother liquor tank 1; the centrifuge 2 is a filter type centrifuge; the bottom of the centrifuge 2 A filter cake 7 is provided; the inside of the mother liquor tank 1 is coated with an anti-corrosion coating...

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Abstract

The invention provides a sodium sulfate TVR single-effect evaporation and crystallization system which comprises a mother liquor tank, a centrifuge, a preheater, a TVR compressor, a cooling crystallizer and a condenser, wherein the mother liquor tank, the preheater, the cooling crystallizer and the centrifuge are sequentially connected. The system has a simple structure and a small floor area, and mother liquor can be cyclically evaporated and crystallized, so that the utilization ratio is high.

Description

technical field [0001] The invention relates to the field of evaporation crystallization, in particular to a sodium sulfate TVR single-effect evaporation crystallization system. Background technique [0002] Thermal vapor recompression technology—TVR, according to the heat pump principle, the steam from the boiling chamber is pressurized to a higher pressure. At this time, the corresponding saturated steam has a higher temperature than the steam in the heating chamber, and the steam can be reused. The requirements can be met by using a steam injection compressor, so it is widely used in the field of evaporative crystallization of chemical products, and the evaporative crystallization of sodium sulfate is one of them. [0003] At present, the following problems exist in the sodium sulfate TVR single-effect evaporation crystallization system: there is no filtration in the centrifuge, the mother liquor is directly discharged with the crystallization product, no recovery measure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D5/00
CPCC01D5/004
Inventor 钱亮夏荣才王小文陈希明匡荣
Owner 江苏格兰特干燥浓缩设备有限公司
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