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Method for removing sulfur dioxide in flue by using desulfurization liquor

A technology of sulfur dioxide and desulfurization liquid, which is applied in the field of desulfurization liquid in the flue to remove sulfur dioxide, can solve the problems of failing to meet the emission standards required by environmental protection, large additions, etc., achieve significant substantive effects, improve work efficiency, and simple preparation process Effect

Inactive Publication Date: 2013-01-30
SHANGHAI GUBAO IND
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  • Application Information

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Problems solved by technology

[0003] At present, the desulfurization method commonly used is to add in limestone furnace, and its desulfurization efficiency is about 30%, and the amount of desulfurization is relatively large.
In addition, the addition of limestone furnace can not meet the emission standards of environmental protection requirements

Method used

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  • Method for removing sulfur dioxide in flue by using desulfurization liquor
  • Method for removing sulfur dioxide in flue by using desulfurization liquor
  • Method for removing sulfur dioxide in flue by using desulfurization liquor

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Embodiment Construction

[0015] The technical solution of the present invention will be further described below through specific examples.

[0016] A method for removing sulfur dioxide with a desulfurization liquid agent in a flue. In the concrete horizontal flue 5 at the outlet of the boiler flue gas tail gas induced draft fan 2, the desulfurization liquid agent is sprayed in the direction of the air flow to carry out the sulfur dioxide removal reaction. After removing the sulfur dioxide The net flue gas is discharged into the atmosphere.

[0017] The composition and weight percentage of the desulfurization liquid agent in the present invention are: quaternary ammonium base organic matter 50%, 60%, 70% or 80%, organic solvent 20%, 30%, 40% or 50%, pH value 12-14. Wherein the organic solvent can be ethanol, methanol, ethylene glycol ether, isopropanol and ammonium isopropoxide.

[0018] The weight ratio of the desulfurization liquid agent of the present invention to sulfur dioxide in the flue gas is ...

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Abstract

The invention relates to a method for removing sulfur dioxide in a flue by using desulfurization liquor. In the method, in a horizontal flue at an outlet of a boiler flue gas tail gas draught fan, the desulfurization liquor is sprayed in a direction facing gas flows to perform a reaction for removing the sulfur dioxide, and a clean flue gas after removing the sulfur dioxide is discharged into the atmosphere, wherein the desulfurization liquor comprises the following components in percentage by weight: 50 to 80 percent of a quaternary ammonium base organic substance and 20 to 50 percent of organic solvent. The method can be used in a thermal power plant and various combustion boilers using oil and coal as fuels to remove the sulfur dioxide in the flue gas, reduce over 90 percent of emission pollution, and greatly improve the working efficiency. The method has a significant substantial effect. Besides, the method has a simple preparation process of the desulfurization liquor, a low input cost and high practicability.

Description

[technical field] [0001] The invention relates to an improved technology for removing sulfur dioxide from exhaust gas discharged from the tail of a boiler after combustion, which can effectively remove the harmful gas of sulfur dioxide, belongs to the field of energy and environmental protection, and specifically relates to a method for removing sulfur dioxide in a flue with a desulfurization liquid agent. [Background technique] [0002] The sulfur dioxide in the tail gas emission after the combustion of fossil raw materials combines with water vapor in the atmosphere to form sulfuric acid, forming acid rain, which is the primary pollutant. Environmental protection is becoming more and more important and urgent. The sulfur dioxide emitted by boilers after combustion accounts for 80% of the total sulfur dioxide emissions. Reducing the emission of sulfur dioxide is an important means to improve the environment and the greatest benefit for human beings to improve living conditi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/78B01D53/50
Inventor 朱正明
Owner SHANGHAI GUBAO IND
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