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A low-resistance air-cooled drop-type tube demister and its demister method

A cold drop type, mist eliminator technology, applied in the direction of chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problems of large flow resistance of flue gas, low dust removal efficiency, insufficient flushing, etc., to save operating costs , uniform flow, energy saving effect

Active Publication Date: 2017-08-25
SOUTH CHINA UNIV OF TECH
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  • 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 mist removal and dust removal, large resistance to flue gas flow and insufficient flushing of traditional mist eliminators, and to provide a low-resistance air-cooled drop-type tubular mist eliminator and its demisting method

Method used

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  • A low-resistance air-cooled drop-type tube demister and its demister method
  • A low-resistance air-cooled drop-type tube demister and its demister method
  • A low-resistance air-cooled drop-type tube demister and its demister method

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Embodiment

[0030] Such as Figures 1 to 4 shown. The invention discloses a low-resistance air-cooled drop-type tube-type demister, which includes an air-cooled drop-type tube bundle defogging system arranged on the top of a desulfurization tower, and a device for introducing cold wind into the air-cooled drop-type tube bundle demisting system Cooling air automatic diversion system;

[0031] The air-cooled drop-type tube bundle defogging system is composed of a tube row array composed of multi-layer lattice staggered tube bundles 1 with a drop-shaped cross-section, and the two ends of the tube row array are respectively supported on the tube sheet 2 .

[0032] The major axis B of the cross-section of the drop-shaped tube bundle 1 is 2 to 3.5 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.

[0033] The cooling wind automatic deflector system is composed of a plurality of wind deflectors 4 r...

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Abstract

The invention discloses a low-resistance air-cooled drop-type tube mist eliminator and a demisting method thereof, comprising a drop-shaped tube bundle defogging system arranged at the top of a desulfurization tower, a cooling air automatic Diversion system. The drop-shaped tube bundle defogging system includes a multi-layer lattice staggered arrangement of a water-drop-shaped tube row array; the graded directional flushing water system is composed of a plurality of upward and downward jetting water streams arranged in layers and arrays between the water-drop-shaped tube bundles. The nozzle is formed; the cooling air automatic guiding system includes a plurality of wind deflectors respectively arranged in the perennial wind direction of the windward end and the leeward end of the pipe row array. The mist eliminator combines inertial separation and condensation separation, and has the characteristics of high demisting and dust removal efficiency, low resistance, low energy consumption, not easy to scale and block, water saving, etc., and can effectively reduce the "gypsum rain" generated after flue gas desulfurization. ".

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 drop-type tubular 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 the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D50/00
Inventor 刘定平袁丹珏刘畅
Owner SOUTH CHINA UNIV OF TECH
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