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Method and apparatus for removing selenium oxide, and method and apparatus for measuring mercury by using the same

A selenium oxide and sample technology, which is applied in chemical instruments and methods, measuring devices, separation methods, etc., can solve problems such as difficulty in obtaining measured values, and achieve the effect of simple operation.

Inactive Publication Date: 2008-10-15
HORIBA LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, with the expansion of current applications, for example, when measuring mercury in the exhaust gas of waste incinerators, etc., in the above-mentioned conventional method, due to the Affected by the presence of nitrogen oxides (NOx), sulfur dioxide (SO2) or hydrogen chloride (HCl), it is difficult to obtain measured values ​​with sufficient accuracy

Method used

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  • Method and apparatus for removing selenium oxide, and method and apparatus for measuring mercury by using the same
  • Method and apparatus for removing selenium oxide, and method and apparatus for measuring mercury by using the same
  • Method and apparatus for removing selenium oxide, and method and apparatus for measuring mercury by using the same

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Embodiment Construction

[0096] Embodiments of the present invention will be described below with reference to the drawings.

[0097]

[0098] One of the features of the selenium oxide removal device (hereinafter referred to as "this removal device") related to the present invention is to possess:

[0099] (1) The heating introduction path of the heating sample,

[0100] (2) a primary cooling unit that has a flow path through which the heating sample flow and the cooling water flow form a convective flow, and mixes the heating sample and cooling water for cooling,

[0101] (3) a secondary cooling unit having a helical flow path for cooling the mixed gas and having a space for gas-liquid separation at the terminal end of the helical flow path,

[0102] (4) A regenerator that introduces condensed water from the secondary cooling unit,

[0103] (5) A cooling water supply path connecting the regenerator and the primary cooling unit.

[0104] Concrete structure of this removing device 1 is in figure...

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Abstract

There is provided a method and apparatus for removing selenium oxide in a sample as well as a method and apparatus for measuring mercury in coal combustion exhaust gas by using the same. The apparatus for removing selenium oxide in a sample, comprising: (1) a heating introduction path for heating a sample, (2) a primary cooling unit having a flow path through which the heated sample flows counter currently to cooling water, whereby the heated sample is mixed with, and cooled by, cooling water, (3) a secondary cooling unit having a spiral flow path for cooling the mixed gas and having a space for gas / liquid separation at the end of the spiral flow path, (4) a regenerator for introducing condensed water from the secondary cooling unit, and (5) a condensed water-cooling path for connecting the regenerator to the primary cooling unit.

Description

technical field [0001] The present invention relates to a method and a removal device for removing selenium oxide in a sample, and a method and a device for measuring mercury in a coal combustion exhaust gas using the same, and relates to reducing the amount of mercury originating from fossil fuel combustion facilities, especially coal combustion facilities. Gasified metal oxides and sulfur dioxide (SO 2 ) and other methods and devices for measuring total mercury due to the influence of coexisting components that interfere with the measurement of total mercury. Background technique [0002] Conventionally, the measurement device for total metal mercury in combustion exhaust gas is a fixed source mercury measurement device using a continuous measurement method or a dilution measurement method using gold amalgam specified in JIS K 0222. Here, the dilution measurement method using gold amalgam means that the sample gas is reduced to metallic mercury by reducing the mercury com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/34
CPCB01D2255/202B01D2251/408B01D53/1456B01D2257/60B01D2255/50G01N33/0045B01D53/77B01D2251/604
Inventor 加藤纯治秋山重之古贺富士夫石川浩二
Owner HORIBA LTD
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