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Mercury concentration measurement device, exhaust gas treatment device, and exhaust gas treatment method

A technology for an exhaust gas treatment device and a measuring device, which is applied in the direction of measuring device, separation method, chemical method analysis, etc., can solve the problems of inability to obtain mercury concentration, control the supply amount of mercury adsorbent, etc.

Active Publication Date: 2020-11-10
HITACHI ZOSEN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, accurate mercury concentration cannot be obtained in the detection device of Document 1, and it is difficult to properly (i.e. avoid excessive or insufficient) control of the supply amount of mercury adsorbent

Method used

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  • Mercury concentration measurement device, exhaust gas treatment device, and exhaust gas treatment method
  • Mercury concentration measurement device, exhaust gas treatment device, and exhaust gas treatment method
  • Mercury concentration measurement device, exhaust gas treatment device, and exhaust gas treatment method

Examples

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Embodiment Construction

[0030] figure 1 It is a figure which shows the structure of the incinerator 1 which concerns on one Embodiment of this invention. The incineration facility 1 is a facility for incinerating waste such as municipal garbage. The incineration facility 1 includes an incinerator 21 , a flue 3 , an exhaust treatment device 4 , and a chimney 22 . Combustion of waste and combustion of combustible gas generated from the waste are carried out in the incinerator 21 . The flue 3 is a gas flow path connecting the incinerator 21 and the chimney 22 . The exhaust treatment device 4 is installed in the flue 3 . An induced draft fan (not shown) is also installed on the flue 3 . Exhaust gas (combustion gas) generated by the incinerator 21 is exhausted to the flue 3 by the induced draft fan, and guided to the chimney 22 via the exhaust gas treatment device 4 . In the incinerator 1 , the exhaust gas generated from the incinerator 21 flows from the incinerator 21 toward the chimney 22 in the fl...

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Abstract

A mercury concentration measuring device (45) is provided with: a first intake port (51) attached to a flue (3); a reducing unit (53) for reducing divalent mercury contained in gas captured by the first intake port (51) to zero-valent mercury; a second intake port (52) attached to the flue (3); a concentration acquiring unit (54) for acquiring a measured value of a mercury concentration on the basis of zero-valent mercury; and a switching unit (55) which selectively causes either gas that has passed through the reducing unit (53) or gas captured by the second intake port (52) to flow into theconcentration acquiring unit (54). This makes it possible for rapid measurement of the mercury concentration and accurate measurement of the mercury concentration to be performed selectively.

Description

technical field [0001] The invention relates to a mercury concentration measuring device, an exhaust gas treatment device and an exhaust gas treatment method. Background technique [0002] Mercury-containing exhaust gas is sometimes generated when general waste such as municipal waste is incinerated. In this case, a mercury adsorbent is supplied to the exhaust gas in order to remove mercury in the exhaust gas. On the other hand, mercury contained in exhaust gas is mainly zero-valent atomic mercury (hereinafter referred to as "zero-valent mercury"), and divalent mercury (hereinafter referred to as "divalent mercury" constituting mercury compounds such as mercuric chloride). )exist. At present, when measuring the concentration of mercury contained in the exhaust gas, the divalent mercury in the gas taken in is reduced to zero-valent mercury, and the zero-valent mercury contained in the reduced gas (hereinafter the original exhaust gas The concentration of contained zero-val...

Claims

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Application Information

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IPC IPC(8): G01N31/00B01D53/64B01D53/83G01N33/00
CPCB01D53/83G01N31/00B01D53/64G01N33/00
Inventor 古林通孝桥本博光加藤睦史
Owner HITACHI ZOSEN CORP