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System with integration of evaporation, crystallization and separation

An evaporation crystallization and evaporation system technology, applied in the direction of solution crystallization, heat exchange cooling crystallization, chemical instruments and methods, etc., can solve the problems that the concentrated solution cannot be directly reused or crystallized, so as to reduce energy consumption, prevent scaling, and improve The effect of heat transfer efficiency

Pending Publication Date: 2019-11-12
广州市中绿环保有限公司
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Problems solved by technology

However, due to the limitation of the concentration ratio, the concentrated solution cannot be directly reused or crystallized, and a certain proportion of high-concentration concentrated solution still exists, which needs to be outsourced.

Method used

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  • System with integration of evaporation, crystallization and separation
  • System with integration of evaporation, crystallization and separation

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Embodiment

[0036] An embodiment of the integrated system of evaporation, crystallization and separation of the present invention, the schematic structure of this embodiment is as Figure 1~2 As shown, the evaporation and crystallization separation integrated system includes an evaporation system 1, a crystallization system 2 and a box (not shown in the figure). The evaporation system 1 and the crystallization system 2 are both arranged inside the box 3, and the box 3 It is a 3.0×3.3×12.0m carriage with an open top.

[0037] The evaporation system 1 includes a waste liquid storage tank 101, a gas-liquid separator 102 (φ1000mm×3700mm), an evaporation heater 103 (shell-and-tube heat exchanger, φ900×6000mm, double tube pass), and the first Roots vapor compression The machine 104 (2000kg / h, 132kW) and the plate heat exchanger 105, the volume of the waste liquid storage tank 101 is V=2000L, the liquid outlet of the waste liquid storage tank 101 is connected to two plate heat exchangers 105 in ser...

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Abstract

The invention discloses a system with integration of evaporation, crystallization and separation. The system with integration of evaporation, crystallization and separation comprises an evaporation system and a crystallization system; and the evaporation system comprises a gas-liquid separator, an evaporation heater and a first Roots vapour compressor, a waste liquid inlet is formed in the gas-liquid separator, a circulating pump is arranged between the gas-liquid separator and the evaporation heater, the circulating pump is used for making waste liquid flow circularly between the gas-liquid separator and the evaporation heater, a gas outlet of the gas-liquid separator is connected with a gas inlet of the first Roots vapour compressor, and a high-temperature high-pressure gas outlet of thefirst Roots vapour compressor is connected with a gas inlet of the evaporation heater. The system integrates evaporation concentration and separation by crystallization, Roots vapour compressors areused as heat source main bodies, self-sufficiency of heat sources is achieved, heat sources of vapour and the like do not need to be added, the waste liquid is concentrated at first, and after concentration reduction treatment is conducted, crystallization treatment is conducted through the crystallization system, so that the treatment efficiency is improved, energy consumption is reduced, motherliquor subjected to solid-liquid separation enters an evaporation crystallizer again for concentration crystallization, and no waste liquid is discharged by the system.

Description

Technical field [0001] The invention relates to a wastewater treatment system, in particular to an integrated system of evaporation, crystallization and separation. Background technique [0002] Water pollution is one of the main environmental problems facing our country. With the development of industry, the discharge of wastewater is increasing. Industrial wastewater that does not meet the discharge standards will pollute surface water and groundwater when discharged into water bodies. Once a water body is polluted, it is not easy to restore it to its original state in a short time. After the water body is polluted, it will not only make the water quality not meet the standards of drinking water and fishery water, but also increase the harmful chemical substances and hardness in the groundwater, which will affect the utilization of groundwater. my country's water resources are not rich. If calculated on the basis of the average population, it is only equivalent to a quarter o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04B01D9/02C02F101/20
CPCC02F1/04C02F1/043C02F1/048B01D9/0013C02F2101/20
Inventor 林楚佳钟穗亭林晓灵
Owner 广州市中绿环保有限公司
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