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

Inactive Publication Date: 2004-05-05
THE BABCOCK & WILCOX CO
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In many cases, air pollution control system updates or improvements are difficult due to site space and / or power consumption considerations

Method used

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

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Embodiment Construction

[0022] The present invention is preferably applied to the treatment of boiler flue gas and this embodiment will be described in order to illustrate the invention and its advantages. While the invention is not limited to this illustrative embodiment, it is contemplated that the invention has applicability to various combustion system extracts, packed or other types of scrubbers, and various co-current and / or counter-current flows of reagents.

[0023] The following description will be made with reference to the drawings in which like reference numerals denote like parts.

[0024] Referring to the accompanying drawings, especially figure 1 , an upflow / downflow WFGD system 10 is known in the art, and the system includes a flue gas pipeline 11 for receiving flue gas 12 from such as a coal-fired power plant or an industrial boiler (not shown in the figure), the flue gas The flue gas has preferably been passed through an electrostatic precipitator or a fabric filter (neither shown)...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14B01D53/18
CPCB01D53/1468B01D53/18Y10T29/49716
Inventor R·L·古德D·W·约翰逊D·W·墨菲R·B·迈尔斯J·F·苏列克D·R·伯利P·J·利布
Owner THE BABCOCK & WILCOX CO
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