Method of transforming upflow/downflow type wet flue gas desulfur system as single circuit upflow type wet flue gas desulfur system

A desulfurization system, flue gas technology, applied in separation methods, chemical instruments and methods, separation of dispersed particles, etc., can solve problems such as difficulties in updating or improving air pollution control systems
CN1493391AInactive Publication Date: 2004-05-05THE BABCOCK & WILCOX CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
THE BABCOCK & WILCOX CO
Publication Date
2004-05-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method of reducing the pressure drop in a downflow / upflow wet flue gas desulfurization (WFGD) system and of improving overall sulfur dioxide collection efficiency by converting the downflow / upflow WFGD system to an upflow single-loop WFGD system. The method includes the replacing of the downflow quencher and related duct work with a bypass for connecting the incoming flue gas duct with the upflow absorber, and the adding of a quenching zone in the absorber comprised of spray headers.
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Description

technical field

[0001] The present invention relates generally to wet flue gas desulfurization (WFGD) systems, and in particular to converting an upflow / downflow WFGD system to a single loop upflow WFGD system to reduce pressure drop in an upflow / downflow WFGD system, and New ways to improve their collection efficiency. technical background

[0002] Flue gas desulfurization, especially in power plants, has been the subject of much research work. Federal and state government regulations on air quality have established increasingly stringent emission standards, especially for well-known pollutants such as sulfur oxides. Since coal-fired and oil-fired power plants emit a large amount of combustion by-products - sulfur oxides, a lot of work is directed at flue gas desulfurization to reduce the power plant's sulfur oxide emissions to the allowable range.

[0003] Sulfur oxides, mainly sulfur dioxide, are found in the flue gases of coal- and oil-fired power plants and those usin...

Claims

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