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Gas analysis device, mercury removal system, gas analysis method, and method of removing mercury from exhaust gas

A gas analysis and waste gas technology, applied in separation methods, sampling devices, analysis materials, etc., can solve the problems such as the inability to perform chloride ion analysis, and the inability to determine the NH3 concentration.

Active Publication Date: 2013-03-06
MITSUBISHI POWER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] However, in order to control the Hg contained in the exhaust gas 0 Oxidation is carried out through the desulfurization unit, and the NH 4 When the Cl solution is sprayed into the flue in a liquid state, the conventional SO in the exhaust gas as described in Patent Document 2 3 or NH 3 Analytical method for the determination of the concentration of gases in the presence of NH 4 Chloride ions (Cl - ) analysis cannot be performed on such a problem
That is, in the case where NH is supplied into the flue as in the past, 3 In the smoke treatment device of the device, when in order to control the Hg contained in the exhaust gas 0 Oxidation and additional supply of NH 4 In the case of a Cl solution device, the NH in the exhaust gas is measured as described in the conventional patent document 2. 3 In the case of the concentration of the NH 3 The value of the concentration is dependent on the supplied NH from 3 The NH supplied by the device 3 The concentration, still depends on the NH supplied from 4 The NH supplied by the device of the Cl solution 3 concentration

Method used

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  • Gas analysis device, mercury removal system, gas analysis method, and method of removing mercury from exhaust gas
  • Gas analysis device, mercury removal system, gas analysis method, and method of removing mercury from exhaust gas
  • Gas analysis device, mercury removal system, gas analysis method, and method of removing mercury from exhaust gas

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no. 1 approach

[0041] A gas analysis device according to a first embodiment of the present invention will be described with reference to the drawings. figure 1 is a schematic diagram showing a gas analysis device according to a first embodiment of the present invention, figure 2 It is a figure which schematically shows the structure of a filter cartridge. Such as figure 1 , 2 As shown, the gas analysis device 10 of this embodiment includes: 4 Cl), sulfurous acid (SO 3 ) The flue 12 of the exhaust gas 11 of both sides extracts the exhaust gas extraction pipe 13 of the exhaust gas 11A; is arranged on the exhaust gas extraction pipe 13, and removes the catcher (smoke dust removal mechanism) 14 contained in the extracted exhaust gas 11A; The exhaust gas is extracted from the pipe 13, and the NH contained in the exhaust gas 11A 4 Cl, SO 3 The filter cartridge (precipitation mechanism) 15 that both sides separate out; 4 Cl, SO 3 Both samples 16 are irradiated with X-rays 17 and fluorescen...

no. 2 approach

[0052] A Hg removal system according to a second embodiment of the present invention will be described with reference to the drawings. image 3 It is a schematic diagram showing the Hg removal system of the second embodiment of the present invention. The Hg removal system of this embodiment is used as NH 4 Cl determination device (NH 4 Cl determination mechanism), use figure 1 , 2 The gas analysis device 10 of the first embodiment is shown, so the NH 4 Description of the Cl determination device.

[0053] Such as image 3 As shown, the Hg removal system 30A of this embodiment is a Hg removal system for removing Hg contained in the flue gas 11 discharged from the boiler 31, and has the function of spraying NH into the flue 12 downstream of the boiler 31. 4 NH of Cl solution 41 4 Cl solution supply mechanism 32; 3 The gas reduces the NOx in the exhaust gas 11 and Hg in the presence of HCl gas 0 The reduction and denitration device (reduction and denitration mechanism) 33...

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Abstract

This gas analysis device (10) comprises: an exhaust gas drain tube (13) for extracting an exhaust gas (11A) from a smoke path (12) through which the exhaust gas (11) containing both NH4Cl and SO3 is supplied; a collector (14) which is arranged in the exhaust gas drain tube (13) and can remove smoke dust contained in the extracted exhaust gas (11A); a roll filter (15) which is arranged in the exhaust gas drain tube (13) and can cause both NH4Cl and SO3 contained in the exhaust gas (11A) to precipitate; and a measurement unit (19) for irradiating a sample containing both NH4Cl and SO3 that has been precipitated by means of the roll filter with X-ray and detecting fluorescent X ray generated from the sample, thereby measuring both NH4Cl and SO3 contained in the exhaust gas (11A).

Description

technical field [0001] The present invention relates to a gas analyzer for measuring the concentration of ammonium chloride supplied to boiler exhaust gas, a mercury removal system, a gas analysis method, and a method for removing mercury in exhaust gas. Background technique [0002] Exhaust gas from combustion equipment such as boilers and waste incinerators contains harmful components such as smoke, sulfur oxides (SOx), and nitrogen oxides (NOx), so it is necessary to use an exhaust gas treatment device to remove them. Conventional flue gas treatment devices include a denitrification device that reduces NOx and a wet desulfurization device that uses alkali absorption liquid as an SOx absorbent. In the flue, ammonia (NH 3 ) and use the denitrification catalyst of the denitrification device to reduce nitrogen monoxide (NO) as shown in the following formula (1) to remove NOx, and use the wet desulfurization device to absorb SOx by the alkali absorption liquid to treat harmful...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/223B01D53/64B01D53/86G01N1/22
CPCB01D53/30G01N23/223G01N21/64B01D53/64B01D2251/206G01N1/2202B01D2257/602G01N2223/076
Inventor 香川晴治千代丸胜鹈饲展行冈本卓也村上盛纪
Owner MITSUBISHI POWER LTD