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Improved smoke removal purifier

A technology of purification device and purification tower, which is applied in the field of flue gas desulfurization device and improved exhaust purification device, to achieve the effect of reducing sulfate content and eliminating sulfate rain

Inactive Publication Date: 2010-06-23
王建敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to disclose an improved smoke exhaust purification device, specifically a smoke exhaust purification device that can further wash the desulfurized and purified flue gas, so as to economically solve the serious " Gypsum or ammonium sulphate rain" new environmental problem

Method used

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Examples

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Embodiment 1

[0025] see figure 1 , an improved exhaust gas purification device, which is used for ammonia exhaust gas purification, that is, flue gas desulfurization process. The raw flue gas 10 containing sulfur dioxide and having a high temperature enters the flue gas desulfurization section of the purification tower 1 through the flue gas inlet 102, and is pumped by the desulfurization circulating pump 2 from the absorption liquid circulation pool at the lower part of the purification tower 2 and transported to the absorption liquid spray Components 112 and 113 are in close contact with the desulfurization absorption liquid 111 sprayed with sulfuric acid crystals, sulfur dioxide becomes ammonium sulfite and dissolves in the absorption liquid, and falls back from the tower to the absorption liquid circulation pool. After being defoamed by the flue gas demister 115, the flue gas passes through the gas-rising cap 121 on the partition 117 and enters the flue gas water washing section to was...

Embodiment 2

[0031] see figure 1 , an improved exhaust gas purification device, which is used in the process of calcium exhaust gas purification, that is, flue gas desulfurization. The raw material 11 is limestone, specifically a mixed slurry of limestone and water, and the average particle size of the limestone is below 100 microns; the desulfurization absorption liquid 111 is a slurry containing calcium sulfate, that is, gypsum crystals, and its solid content is 15%; the washing liquid 31 is a slurry containing A mixed aqueous solution of a very small amount of gypsum solids, with a gypsum content of 0.05%; other operating modes and operating conditions are the same as in Example 1. Through the operation of the above devices, after the desulfurized flue gas is washed by the flue gas water washing section, the purified flue gas does not produce obvious gypsum rain.

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Abstract

The invention discloses an improved smoke removal purifier, which comprises a purification tower, wherein the purification tower comprises an oxidation pond containing absorption solution and an air bubbling component, and a smoke removal purification section containing at least two groups of absorption solution sprinkling components and at least one group of defoaming components; and particularly, the purification tower also comprises a group of washing sprinkling components for purifying flue gas and at least one group of flue gas washing section of a flue gas defoaming component. The washing section is connected with a washing circulating tank, and washing solution is also used for flushing the defoaming components of the smoke removal purification section. Thus, slurry droplets carried by the flue gas after purification are washed in the flue gas washing section and enter the washing solution, the concentration of the slurry droplets is greatly diluted and reduced, even certain droplets are carried out by the flue gas in the flue gas washing section, obvious white spots and equipment corrosion are hardly generated by the droplets, and the problem of the content increment of sulfate rain and smoke dust is solved.

Description

technical field [0001] The invention relates to an improved smoke exhaust purification device, in particular to a flue gas desulfurization device, and belongs to the technical fields of electric power, metallurgy, environmental protection and chemical industry. Background technique [0002] Acidic gaseous harmful substances contained in flue gas, especially SO 2 is the main source of acid rain. As we all know, one way to solve acid rain pollution is flue gas desulfurization. At present, the main method used is to produce gypsum with limestone as raw material, which is called the calcium method. Because gypsum is not very useful, the desulfurization product gypsum is often discarded and piled up, occupying cultivated land, and causing new environmental problems. Due to its cheap and easy-to-obtain raw materials, it is still the main flue gas desulfurization method. Another promising method is to use ammonia as raw material, and the desulfurization product is ammonium sulfa...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/50
Inventor 王建敏
Owner 王建敏
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