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Seawater desalination device and method for countercurrent multi-effect evaporation coupling dip tube flash evaporation composite distillation

A multi-effect evaporation and distillation device technology, applied in chemical instruments and methods, seawater treatment, energy and wastewater treatment, etc., can solve the problems of high energy consumption and low quality of seawater and freshwater, achieve low energy consumption, optimal utilization of heat, The effect of high water production ratio

Inactive Publication Date: 2019-06-04
张亮 +1
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  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to provide a device and method for desalination of countercurrent multi-effect evaporation coupled with immersion tube flash evaporation and composite distillation, which solves the problems of high energy consumption and low quality of desalinated seawater in existing devices

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  • Seawater desalination device and method for countercurrent multi-effect evaporation coupling dip tube flash evaporation composite distillation
  • Seawater desalination device and method for countercurrent multi-effect evaporation coupling dip tube flash evaporation composite distillation

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Embodiment Construction

[0020] The present invention will be described in detail below in combination with specific embodiments.

[0021] The inventive device such as figure 1 As shown, it includes a flash tank 1, a multi-effect evaporator 2, a dip tube flash combined distillation device 3, a vacuum crystallization tank 4, a condenser 5, a delivery pump 6, a heater 7, a compressor 8, a raw seawater pipeline 9, fresh water pipeline10. Each effect device of the multi-effect evaporator 2 and the devices at all levels of the dip tube flash evaporator compound distillation device 3 are arranged alternately according to the same number. the front of the device;

[0022] In this embodiment, the multi-effect evaporator 2 is composed of a first effect device 201 and a final effect device 202, and the dip tube flash compound distillation device 3 is composed of a first effect device 301 and a final effect device 302;

[0023] The brine inlet 11 of the flash tank 1 is connected to the brine outlet 23 of the ...

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Abstract

The invention discloses a countercurrent multi-effect evaporation coupling immersion pipe flashing composite distillation seawater desalination device and method. Multi-effect evaporation apparatus each effect unit and immersion pipe flashing composite distillation apparatus each level unit are in alternate distribution in terms of a same number, and are all disposed in front of the corresponding immersion pipe flashing composite distillation apparatus each level unit; a steam-water separator is disposed at the upper part of the immersion pipe flashing composite distillation apparatus each level unit cavity, the bottom of the cavity is equipped with an immersion heating pipeline, except the last level, the other level units' top steam outlets of the immersion pipe flashing composite distillation apparatus are all in connection with multi-effect evaporation apparatus each effect unit's heating steam inlet correspondingly disposed therebehind; and the secondary steam outlets of the multi-effect evaporation apparatus each effect unit are all in connection with the inlets of the immersion heating pipelines correspondingly disposed in the immersion pipe flashing composite distillation apparatus each level unit therebehind. The device and the method provided by the invention realize optimum utilization of heat and wastewater zero discharge technology, are low in energy consumption and have good desalination effect.

Description

technical field [0001] The invention belongs to the technical field of seawater desalination, and relates to a countercurrent multi-effect evaporation coupled dip tube flash distillation composite distillation seawater desalination in which dip tube flash distillation and flash distillation occur simultaneously in the same container (abbreviated as dip tube flash composite distillation) Apparatus and method thereof. Background technique [0002] my country is a country with serious shortage of water resources. Water shortage has become a major bottleneck restricting the sustainable development of my country's economy and society. Seawater desalination is an effective strategic approach to solve the shortage of freshwater resources in our country. Distillation has the characteristics of using low-grade heat sources and large production capacity of the device. It is currently a widely used seawater desalination technology. At present, the distillation methods are mainly low...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10C02F103/08
CPCY02W10/37
Inventor 张亮陈志强郭胜彬黄芳建黄晓娟
Owner 张亮
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