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Wet fume purifier

A wet purification and flue gas technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of induced draft fan impeller, flue and chimney corrosion, downstream equipment corrosion, etc., to save consumption and solve problems. Corrosion problem, effect of increasing discharge temperature

Active Publication Date: 2006-05-17
ZHEJIANG SHUANGYU IND +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

During the discharge process, as the height of the discharge chimney increases, the temperature of the flue gas gradually decreases, and the saturated water vapor in the flue gas decomposes, and some water will be produced, which will form sulfurous acid or sulfuric acid with a small amount of sulfur dioxide in the flue gas. It is highly corrosive, so the low temperature and high moisture content of the treated flue gas will cause corrosion to downstream equipment, especially the corrosion of induced draft fan impellers, flue ducts and chimneys.

Method used

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  • Wet fume purifier
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Embodiment Construction

[0010] Such as figure 1 , figure 2 Shown, the present embodiment comprises absorption reactor (11), purification comprehensive tower (10), wherein absorption reactor (11) comprises nozzle (12), circulating pump (1), and concentrates in purification comprehensive tower (10) There are liquid collecting tank (2), gas micro-explosive device (3), demister (6), cleaning device (5) and graphite heat exchanger (8), and demuerating device (6) is located in liquid collecting tank (4 ), there is a gas-liquid separation belt (4) between them, the washer (5) is set under the demister (6), and the graphite heat exchanger (8) is set above the demister (6) in contact with the smoke Between the gas discharge outlets (9), the two ends of the shell side (13) of the graphite heat exchanger are connected to the flue gas discharge main channel, and the two ends of the tube side (7) of the graphite heat exchanger (8) are connected to the flue gas to be purified. Between the gas inlet and the inle...

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Abstract

The present invention relates to fume desulfurizing technology, and is especially a wet fume purifier for dedusting and desulfurizing fume in coal (oil) burning boiler in large power generating plant. The present invention features the heat exchanger for heat exchange with the high temperature fume to be treated, and aims at providing wet fume purifier capable of raising the temperature of treated fume. Compared with available technology, the present invention has the advantages of high dedusting and desulfurizing efficiency, obvious energy saving effect, compact structure, convenient operation, etc. and can eliminate the corrosion problem of downstream apparatus.

Description

technical field [0001] The invention relates to flue gas desulfurization technology, in particular to a flue gas wet purification device for dust removal and desulfurization matched with coal (oil) boilers in large power plants. Background technique [0002] In recent years, flue gas desulfurization technology at home and abroad, especially in my country, has developed rapidly, providing many technological methods for flue gas desulfurization. In contrast, the wet desulfurization process is still a reliable main direction, which accounts for about 87% of the implementation and operation. [0003] In the wet dust removal and desulfurization process, after the flue gas is in full contact with the absorption liquid, the treated flue gas will contain a large amount of saturated water vapor and a small amount of sulfur dioxide (300mg / m 3 ), the temperature is about 55-65°C. During the discharge process, as the height of the discharge chimney increases, the temperature of the fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78
Inventor 王家骐
Owner ZHEJIANG SHUANGYU IND
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