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Water-covered type dedusting and desulphuration method and device

A technology of dust removal equipment and desulfurization equipment, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles, and can solve problems such as large investment, poor treatment effect, and failure to meet flue gas emission standards.

Inactive Publication Date: 2013-11-13
廖培淞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The desulfurization and dust removal of coal-fired boilers is a very important environmental protection issue. At present, many solutions have been proposed. Failed to meet the smoke emission standards stipulated by the Chinese government

Method used

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  • Water-covered type dedusting and desulphuration method and device
  • Water-covered type dedusting and desulphuration method and device
  • Water-covered type dedusting and desulphuration method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1As shown, the water-covered dust removal and desulfurization method and equipment adopt the positive pressure and negative pressure combined method for dust removal and desulfurization, including the dust removal device 8, the fan 28 and the desulfurization device 14, and the outer shells of the dust removal device 8 and the desulfurization device 14 are cylindrical and adopt Steel is made, and is connected with fan 28 with flange 13 respectively. The dust removal device 8 is provided with a partition A11, which divides the dust removal device 8 into a washing chamber and a dehydration chamber. The washing chamber includes overflow port A1, overflow conduit A2, return pipe A3, sewage outlet A4, smoke inlet pipe A5, smoke inlet A6 and water inlet A7; the dehydration chamber includes smoke exhaust pipe A9, smoke shield cover A10 and smoke outlet Port A12. The sewage outlet A4 is located at the bottom of the washing chamber of the dust removal equipment 8...

Embodiment 2

[0030] Such as figure 2 As shown, the water-covered dust removal and desulfurization method and equipment adopt negative pressure method for dust removal and desulfurization, including dust removal equipment 8, desulfurization equipment 14 and fan 28, and the three are connected by flanges 13 respectively. The outer casings of the dedusting equipment 8 and the desulfurization equipment 14 are rectangular and made of reinforced cement. The dedusting equipment 8 is provided with a partition A11, and the dedusting equipment 8 is divided into a washing chamber and a dehydration chamber. The washing chamber includes an overflow port A1, The overflow conduit A2, the return pipe A3, the sewage outlet A4, the smoke inlet pipe A5, the smoke inlet A6 and the water inlet A7, and the dehydration chamber is provided with a smoke exhaust pipe A9, a smoke shield cover A10 and a smoke outlet A12. The sewage outlet A4 is located at the bottom of the washing chamber of the dust removal equipme...

Embodiment 3

[0034] Such as image 3 As shown, the water-covered dust removal and desulfurization method and equipment adopt positive pressure method for dust removal and desulfurization, including fan 28, dust removal equipment 8 and desulfurization equipment 14, and the three are respectively connected by flanges 13 in sequence. The dust removal equipment 8 with a rectangular outer shell and the desulfurization equipment 14 with a cylindrical outer shell are both made of steel. The dust removal equipment 8 is provided with a partition A11, which divides the dust removal equipment 8 into a washing chamber and a dehydration chamber. The washing chamber includes an overflow port A1, an overflow conduit A2, a return pipe A3, a sewage outlet A4, a smoke inlet pipe A5, and a smoke inlet pipe. Port A6 and water inlet A7, and the dehydration chamber is provided with a smoke exhaust pipe A9, a smoke shield cover A10 and a smoke outlet A12. Sewage outlet A4 is located at the bottom of the washing...

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Abstract

The invention relates to a water-covered type dedusting and desulphuration method and device for flue gas or coal gas. The method adopts three methods, namely a method adopting positive pressure and negative pressure, a method adopting positive pressure and a method adopting negative pressure. The device contains a desulphuration device, a dedusting device and a fan device, wherein the desulphuration device is the reaction device of flue gas and lime water; and flue gas or coal gas is discharged from the system after water washing, dedusting and desulphuration. The desulphuration method is mainly characterized in that the effects of dedusting and desulphuration are good, the temperature of flue gas can be effectively reduced to less than 50 DEG C, the pressure of the finally discharged flue gas is less than 1000Pa, the dust elimination rate is up to more than 99%, the smoke Ringelmann black degree reaches the zero level, the desulphuration rate is up to more than 95%; and the device of the invention has the advantages of simple structure, easy preparation method, low cost, small floor space and the like.

Description

technical field [0001] The invention relates to a flue gas purification and emission treatment device, in particular to a water-covered dust removal and desulfurization method and equipment for dust and sulfur-containing flue gas. Background technique [0002] Due to the increasingly serious environmental pollution, the Chinese government is gradually implementing strict coal-fired flue gas emission standards in terms of flue gas emissions. At present, the dust removal of flue gas can be divided into electrostatic dust removal, bag dust removal, wet dust removal, etc. In addition to dust removal, flue gas generally needs to be desulfurized, which can be divided into dry, semi-dry, and wet desulfurization. The excerpts of the retrieved existing dust removal and desulfurization treatment methods and devices are as follows: [0003] 1. Invention patent 200910143945.8, flue gas purification system and its method. The content disclosed in the invention includes a flue and a chi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/50B01D50/00
Inventor 廖培淞
Owner 廖培淞