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Desalination process system utilizing waste heat

A process system and waste heat technology, applied in the field of desalination process system, can solve the problems of large floor area, complex process, high operating cost, etc.

Inactive Publication Date: 2016-02-03
刘炎军 +2
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  • Description
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  • Application Information

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Problems solved by technology

In the field of energy, the traditional process for desalting salt water is complicated, occupies a large area, has high operating costs, and secondary pollution caused by the use of chemicals. The power system has been looking for new technologies to replace traditional processes.

Method used

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  • Desalination process system utilizing waste heat

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Embodiment Construction

[0009] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0010] The present invention is a desalination process system using waste heat, which includes the following content: multi-effect evaporator (1), heat exchanger (2), pipeline (3), desalinated water pump (4), water replenishment pump (5) , crystallization tank (6), boiler (7), desalted water tank (8), circulating pump (9).

[0011] Its technological process is as follows:

[0012] 1. The circulation pump (9) heats the heat of the boiler flue gas or the low-enthalpy gas extracted from the low-pressure cylinder of the steam turbine through the heat exchanger (2) to heat the circulating water, and the heated circulating water enters the multi-effect evaporator (1) as an energy source;

[0013] 2. The salt water is sent to the multi-effect evaporator (1) through the water replenishment pump (5), and heated, distilled and desalinated in the ...

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Abstract

The invention relates to a desalination process system utilizing waste heat. The system comprises a multi-effect evaporator, a heat exchanger, a pipeline, a desalination water pump, a water supply pump, a crystallization tank, a boiler, a desalination water tank and a circulating pump. Boiler flue gas waste heat or low-enthalpy-value steam pumped out from a low-pressure cylinder of a steam turbine is used as an energy source, and through the heat exchanger and the multi-effect evaporator, salt-containing water is changed into distilled water to realize a desalination purpose; the produced distilled water can be directly used as production water for a power plant or domestic water. According to the system, compared with the prior art, the electricity consumption, the occupied land size and the operation cost are greatly reduced, and secondary pollution caused by medicine utilization is avoided; the system is safe, simple, practical and reliable; by recycling flue gas exhaust heat discharged from the boiler or low-enthalpy-value steam pumped out from the steam turbine, the desalination process operation cost is greatly reduced, and a very high economic value is realized.

Description

[0001] The invention belongs to the field of energy, and in particular relates to a desalination process system utilizing waste heat. Background technique [0002] Improving energy utilization efficiency, saving energy and reducing emissions has received more and more attention, and it is also a national key energy policy. In the field of energy, the traditional process for desalting salt water is complicated, occupies a large area, has high operating costs, and secondary pollution caused by the use of chemicals. The power system has been looking for new technologies to replace traditional processes. Contents of the invention [0003] In order to overcome the problems existing in the above-mentioned prior art, the present invention provides a low-enthalpy gas extracted from boiler flue gas waste heat or steam turbine low-pressure cylinder as an energy source, and the brine is converted into distilled water through a heat exchanger and a multi-effect evaporator. To achieve th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/16
CPCY02A20/124
Inventor 刘炎军王建国
Owner 刘炎军
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