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Low-resistance air-cooled elliptical tube-type demister and demisting method

A demister and elliptical technology, applied in low-resistance air-cooled elliptical tube demister and its field of demisting, can solve the problems of low dust removal efficiency, insufficient flushing, and large flow resistance of flue gas, so as to save operating costs , uniform flow, energy saving effect

Active Publication Date: 2016-02-03
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of low efficiency of fog and dust removal, large resistance to flue gas flow and insufficient flushing of traditional mist eliminators, and to provide a low-resistance air-cooled oval tube type mist eliminator and its demisting method

Method used

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  • Low-resistance air-cooled elliptical tube-type demister and demisting method
  • Low-resistance air-cooled elliptical tube-type demister and demisting method
  • Low-resistance air-cooled elliptical tube-type demister and demisting method

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Embodiment

[0031] Such as Figures 1 to 4 shown. The invention discloses a low-resistance air-cooled elliptical tube demister, which comprises an air-cooled elliptical tube bundle defogging system arranged on the top of a desulfurization tower, and a (passive ) Cooling air automatic diversion system;

[0032] The air-cooled elliptical tube bundle defogging system consists of a tube row array composed of elliptical tube bundles 1 with multi-layer dot matrix staggered cross-section.

[0033] The major axis B of the cross-section of the elliptical tube bundle 1 is 1.5 to 2.5 times the minor axis A; the flue gas flow enters from the bottom of the tube row array, and then is discharged from the top of the tube row array.

[0034] The cooling wind automatic deflector system is composed of a plurality of wind deflectors 4 respectively arranged at the windward end 11 and the leeward end 12 of the tube row array;

[0035] Each wind deflector 4 includes a support rod 10, a deflector 9 with a tr...

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Abstract

The invention discloses a low-resistance air-cooled elliptical tube-type demister and a demisting method. The low-resistance air-cooled elliptical tube-type demister comprises an air-cooled elliptical tube-type demister system arranged on the top of a desulfurization tower and a cooling air automatic diversion system for introducing cold air into an elliptical tube bundle. The air-cooled elliptical tube-type demister system comprises a tube row array which comprises multiple layers of dot matrixes arranged staggerly and has the elliptical section. A grading directional washing water system comprises multiple nozzles spraying water upward and downward, and the multiple nozzles are arranged among the layered and arrayed elliptical tube bundles. The cooling air automatic diversion system comprises multiple wind direction fluid directors which are respectively arranged at windward ends and leeward ends of the tube row array along a perennial wind direction. The demister combines inertial separation and condensation separation, has the characteristics of high demisting and dedusting efficiency, small resistance, low energy consumption, scaling and obstruction difficulty and water saving and can effectively reduce gypsum rain produced by flue gas desulphurization.

Description

technical field [0001] The invention relates to flue gas demisting in a wet flue gas desulfurization device, in particular to a low-resistance air-cooled elliptical tube type demister and a demisting method thereof. Background technique [0002] A large amount of SO produced in the production process of electric power, metallurgy, cement, petrochemical and other industries 2 It has brought serious acid rain hazards and smog weather, and also caused great governance pressure. At present, limestone-gypsum wet flue gas desulfurization technology is widely used in China. However, the flue gas treated by the desulfurization tower entrains certain mist droplets, which not only contain water, but also dissolve sulfuric acid, sulfate, SO 2 and other fine particles. If not removed, these mist particles will deposit on the inner surface of the outlet flue of the desulfurization tower, causing corrosion and blockage of the equipment; or they will be discharged to the chimney with th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D50/00B01D45/04B01D45/08B01D5/00
Inventor 刘定平袁丹珏王玲
Owner SOUTH CHINA UNIV OF TECH
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