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Waste gas purification method and equipment

A technology for purifying equipment and waste gas, which is applied in the fields of desulfurization, industrial waste gas dedusting and dehydration. It can solve the problems of low purification efficiency, complex process and structure, and large investment, and achieve high purification efficiency, simple structure, and investment savings.

Inactive Publication Date: 2009-09-16
张兆奇
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problems existing in the above-mentioned industrial waste gas purification method and equipment are: large investment, complex process and structure, and low purification efficiency

Method used

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  • Waste gas purification method and equipment
  • Waste gas purification method and equipment

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, further illustrate the present invention through embodiment.

[0021] In the embodiment, the exhaust gas purification equipment includes an exhaust gas inlet 5, a spray device, a sewage tank 4, a spiral channel, and a flue gas outlet. A spiral channel is provided above the sewage tank 4, and a flue gas Export. In this embodiment, there are two helical passages arranged with a difference of 180° on the plane. The center of the helical passage is hollow, and when the smoke passes through, an air column is formed. The helical channel is composed of helical blades 3, and a water baffle 12 is also arranged on the helical blade. The water baffle is close to the said hollow air column, so that the collected sewage droplets will never be blown up again by the air flow. And take away. The exhaust gas inlet 5 is a downward elbow, so that the direction of the exhaust gas flow is downward first. The spray device includes a spray noz...

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Abstract

The invention relates to a waste gas purification method and equipment, especially to a industrial waste gas dedusting, dewatering and desulfurization method and equipment. Technical scheme of the invention includes steps: spraying water to waste gas to fully mix and separate gas and water and make dust-containing sewage to flow downwards; making the waste gas to flow upwards to enter a helical channel, carrying out deceleration and temperature lowering for the waste gas so that contained water is adhered to wall of the helical channel to naturally flow downwards; and discharging the purified flue gas. The invention has advantages that compared with common industrial waste gas dedusting, dehydrating and desulfurization equipment, the invention saves investment by two thirds, has small resistance and high purification efficiency, does not generate secondary pollution, has simple structure and can substitute wet type dedusting facility such as common impact wet type filtration deduster and water bath deduster, water collection efficiency of the helical channel can reach 90%, and waste gas after secondary purification reaches national standard and is discharged into atmosphere, so that the invention has environmental protection and waste water circulation, namely emission reduction, functions.

Description

Technical field: [0001] The invention relates to a method and equipment for purifying waste gas, in particular to a method and equipment for dust removal, dehydration and desulfurization of industrial waste gas. Background technique: [0002] At present, the drying and upgrading of coal slime and lignite will produce a large amount of waste gas, and industries such as metallurgy and building materials will also produce a large amount of high-temperature industrial waste gas, which needs to be purified. The methods of dust removal, dehydration and desulfurization of industrial waste gas mainly include the following processes: Enter the water, carry out water bath dust removal, or spray water to the waste gas, and carry out dust removal and purification through gas-water mixing and separation, etc. If desulfurization is required, alkaline substances are added to the water and carried out through a desulfurization device. The above-mentioned industrial waste gas purification me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D47/06B01D53/78B01D53/18B01D45/16
Inventor 张兆奇陶钧张煜楠张婉玲张威
Owner 张兆奇
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