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Dedusting method and device

A technology for dust removal equipment and alkaline solution is applied in the field of dust removal methods and equipment for boilers, which can solve the problems of difficult to use, poor dust removal effect and low efficiency, and achieve the effects of convenient production, improved dust removal efficiency and high efficiency.

Inactive Publication Date: 2012-08-01
URUMQI JIN SUI JIAN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure has poor dust removal effect and low efficiency, and it is difficult to meet the needs of use.

Method used

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  • Dedusting method and device
  • Dedusting method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A dust removal method is to desulfurize the flue gas through an alkaline solution containing calcium carbonate and magnesium oxide (mass percentage of calcium carbonate, magnesium oxide and water: 1:1:50), the flue gas is fully contacted and mixed, and the flue gas SO2 in the air chemically reacts with calcium carbonate and magnesium oxide to achieve the purpose of dedusting. The lye is refluxed and recycled under the action of the pump through the filter; the flue gas that has been desulfurized and dedusted in the previous stage reaches the clear water dedusting spray area for further desulfurization, Dust is removed, and the flue gas is discharged through the flue through the chimney.

Embodiment 2

[0026] A dust removal method is to desulfurize the flue gas through an alkaline solution containing calcium carbonate and magnesium oxide (mass percentage of calcium carbonate, magnesium oxide and water: 10:10:300), the flue gas is fully contacted and mixed, and the flue gas SO2 in the air chemically reacts with calcium carbonate and magnesium oxide to achieve the purpose of dedusting. The lye is refluxed and recycled under the action of the pump through the filter; the flue gas that has been desulfurized and dedusted in the previous stage reaches the clear water dedusting spray area for further desulfurization, Dust is removed, and the flue gas is discharged through the flue through the chimney.

Embodiment 3

[0028] A dust removal method is to desulfurize the flue gas through an alkaline solution containing calcium carbonate and magnesium oxide (mass percentage of calcium carbonate, magnesium oxide and water: 5:5:150), the flue gas is fully contacted and mixed, and the flue gas SO2 in the air chemically reacts with calcium carbonate and magnesium oxide to achieve the purpose of dedusting. The lye is refluxed and recycled under the action of the pump through the filter; the flue gas that has been desulfurized and dedusted in the previous stage reaches the clear water dedusting spray area for further desulfurization, Dust is removed, and the flue gas is discharged through the flue through the chimney.

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Abstract

The invention discloses a dedusting method, comprising the following steps: letting flue gas firstly pass through an alkaline solution containing calcium carbonate and magnesium oxide or containing calcium oxide and sodium hydroxide to carry out desulphurization, then putting the desulphurized flue gas in clear water for dedusting, and finally discharging; wherein the mass percent of calcium carbonate to magnesium oxide to water in the alkaline solution containing calcium carbonate and magnesium oxide is 1-10 to 1-10 to 50-300, and the mass percent of calcium oxide to sodium hydroxide to water in the alkaline solution containing calcium oxide and sodium hydroxide is 1-10 to 1-10 to 50-300. A device used in the dedusting method comprises a desulfurization tower, an alkaline solution pool, a main tower, an inlet gas pipe, a communicating pipe and a dedusting flocculation basin. The device has the advantages of simple structure design, good dedusting effect, and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of dedusting, and in particular relates to a dedusting method and equipment for boilers used in hospitals and the like. Background technique [0002] The desulfurization and dust removal equipment currently in use cannot meet the requirements of (DB65 / 2154-2004, DB65 / 2154-2010) standards. Therefore, the dust collection work is completed by another device (bag filter). [0003] As we all know, the desulfurization towers in the technology are all equipped with spraying technology. Now some desulfurization devices are equipped with various shower-type or impact-type nozzles, but the materials ejected by such nozzles cannot be called "fog". It is more appropriate to call it "water drop". In the process of working in the existing desulfurization device, there is also 5% water mist on the surface of the eddy current; the specific surface area of ​​the chemical reaction of the desulfurization agent is insufficien...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/50B01D47/06F23J15/04
Inventor 刘翠玲石斌刘宁陈振强廖东明郭涛张国政弭光辉熊金强翟建
Owner URUMQI JIN SUI JIAN TECH DEV
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