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Gas flow control apparatus

An air flow control device and technology for air flow control, which are used in fluid mixers, transportation and packaging, gas and gas/vapor mixing, etc., and can solve problems such as low airflow velocity and low mixing efficiency

Inactive Publication Date: 2012-05-02
ALSTOM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the pressure drop results in lower air velocity, which causes less efficient mixing
When process gas flow needs to be deflected or redirected from one pipe to another, it often results in a pressure drop in the gas cleaning system

Method used

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  • Gas flow control apparatus
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Embodiment Construction

[0040] The present invention is described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. However, the present invention may be embodied in many different forms and is not limited to the embodiments set forth herein. The embodiments provided herein are intended to fully convey the spirit and scope of the invention to those of ordinary skill in the art. In the drawings, like numerals indicate like elements.

[0041] figure 1 A power station 1 is shown. The power plant 1 has a boiler 2 in which fuel such as coal, oil or waste is burned while being in contact with supplied air. Process gas / flue gas F and particles formed in the boiler during combustion flow via duct 4 to a flue gas cooler 6 also called an economizer. In the flue gas cooler 6 heat is extracted from the flue gas as it flows downstream via a tube package 8 . The outer surfaces of the tubes within the tube enclosure 8 are in direct co...

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PUM

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Abstract

A gas flow control arrangement for use in an exhaust gas cleaning system, comprising a duct (20) through which flue gases flow from a first end (20a) toward a second end (20b). The duct is configured to have a longitudinal expanse between its first end and its second end, and a gas flow control device (80) arranged therein. The gas flow control device further comprises at least one expanded screen (81, 82, 83, 84) arranged at an angle within the duct to distribute gas flow. A method for controlling gas flow in an exhaust gas cleaning system is also described.

Description

technical field [0001] The present disclosure relates to gas cleaning systems, such as catalytic reduction systems or electrostatic precipitator systems, used in industrial processing plants, such as fossil fuel power generation plants or waste incineration plants. More specifically, the present disclosure relates to flow control arrangements for use in exhaust gas cleaning systems. The airflow control device includes a duct through which exhaust gas flows from a first end toward a second end, and an airflow control device is arranged in the duct. Background technique [0002] During the combustion of fuels such as coal, oil, peat, waste, etc. in industrial process facilities such as fossil fuel power plants, hot process gases are produced which include, among other components, dust particles sometimes called fly ash , and nitrogen oxides. Dust particles are typically removed from process gases by dust removal devices such as electrostatic precipitators (also known as ESPs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/74B01F23/10
CPCB01D2251/2062B01D53/86B01F2005/0622B01F2005/0638B01F5/0616B01F5/0693B01D53/8625B01F3/02Y10T137/794Y10T137/0318B01F23/10B01F25/43171B01F25/4315B01F25/431973B01F25/4523
Inventor A·E·耶尔姆贝里A·M·塔比赫
Owner ALSTOM TECH LTD