Water-saving demister flushing device based on slurry separation and working method thereof

A slurry separation and flushing device technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of scaling, clogging, difficulty in water balance control, large water consumption for demister flushing, etc. The effect of energy consumption, reduction of flushing water consumption, and saving of flushing water consumption

Inactive Publication Date: 2021-08-20
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and to provide a water-saving type based on slurry separation by using the residual heat of flue gas at the desulfurization inlet from the perspective of avoiding fouling and clogging of demister blades and crystallization of flushing water nozzles. The demister flushing device solves the problems of high water consumption and difficult water balance control in desulfurization system demister flushing in related technologies

Method used

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  • Water-saving demister flushing device based on slurry separation and working method thereof
  • Water-saving demister flushing device based on slurry separation and working method thereof

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Effect test

Embodiment

[0030] see figure 1 , in this embodiment, a water-saving demister flushing device based on slurry separation, including a slurry separation pump 1, a slurry separator 2, a thick slurry tank 3, a slurry return pump 4, a flash separation device 5, and a suction fan 7. Flushing water tank 8, flushing water pump 9, desulfurization tower 10 and other equipment.

[0031] see figure 2 , The flash separation device 5 includes a flue gas-slurry heat exchanger 51 , a vapor-liquid separator 52 , a condenser 53 , a vacuum pump 55 and a dope pump 56 and other equipment.

[0032] Specifically, the inlet of the slurry separation pump 1 is connected to the slurry outlet of the desulfurization tower 10 , and the desulfurization tower 10 is also connected to a desulfurization inlet flue 11 and a desulfurization outlet flue 12 .

[0033] Specifically, the inlet of the slurry separator 2 is connected to the outlet of the slurry separation pump 1, the top outlet of the slurry separator 2 is con...

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Abstract

The invention discloses a water-saving demister flushing device based on slurry separation and a working method thereof. The water-saving demister flushing device comprises a slurry separation pump, a slurry separator, a thick slurry tank, a slurry return pump, a flash separation device, a suction fan, a flushing water tank, a flushing water pump, a desulfurization tower and the like, wherein the flash separation device comprises a flue gas-slurry heat exchanger, a vapor-liquid separator, a condenser, a vacuum pump, a concentrated liquid delivery pump and the like. According to the water-saving demister flushing device provided by the invention, the flushing water consumption of the demister can be greatly reduced, the problem of difficulty in water balance control of a desulfurization system in related technologies is solved, and the operation reliability of the desulfurization system is improved.

Description

technical field [0001] The invention relates to the technical field of limestone-gypsum wet desulfurization, in particular to a water-saving demister flushing device based on slurry separation. Background technique [0002] Limestone-gypsum wet desulfurization is the main desulfurization technology of coal-fired units. The demister is one of the important equipment of the wet desulfurization system. The demister flushing device is an essential auxiliary system for the demister. [0003] The demister of the wet desulfurization system is arranged in the desulfurization tower, which mainly plays the role of removing pollutants such as mist and smoke in the flue gas. The demister flushing can clean the surface of the demister, reduce the pressure difference of the demister, and prevent Demister is clogged. Conventional demister rinse water is raised from an external process tank or rinse tank. [0004] With the implementation of the ultra-low emission transformation of coal-fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/48B01D53/34
CPCB01D53/78B01D53/48B01D53/346
Inventor 李壮刘沛奇张杨杨用龙王丰吉
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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