Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for sampling flue gas for analysis containing gas component having high susceptibility to adsorption

一种气体取样、气体组分的技术，应用在取样、分析材料、取样装置等方向，能够解决烟道气体微组分分析不令人满意等问题

Inactive Publication Date: 2007-03-07
THE CHUGOKU ELECTRIC POWER CO INC
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The aforementioned common methods are not satisfactory for micro-component analysis of flue gas

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for sampling flue gas for analysis containing gas component having high susceptibility to adsorption
  • Method for sampling flue gas for analysis containing gas component having high susceptibility to adsorption
  • Method for sampling flue gas for analysis containing gas component having high susceptibility to adsorption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Fig. 1 is a schematic structure of the automatic measuring device of the present invention. Fig. 2 is an enlarged view of a gas sampling tube portion. The top portion of the gas sampling tube (2) having a single tube structure will be in contact with the flue gas (3) flowing through the flue (1). Gas sampling tubes are made of materials that can withstand the high temperatures of the flue gases, usually stainless steel. The diameter of the gas sampling tube is about 5mm.

[0036] A part of the gas sampling tube extending from a part outside the flue to the position of the flange (7) has a double tube structure (4, 5). The gas sampling pipe (2) is connected with the flue gas absorption bottle (12), and the flue gas absorption bottle (12) is also connected with the suction pump (14) and the gas flow meter (15). The sample liquid, which has absorbed the f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An object of the invention is to realize high-accuracy analysis of a flue gas in terms of a trace amount of ammonia so as to control the level of ammonia gas to be added to a flue gas NO x removal apparatus. Since the ammonia gas to be determined is a highly adsorbable, the gas component is considerably adsorbed on a surface of the flue gas sampling tube during sampling of flue gas. When a conventional sampling method including heating a gas sampling tube is employed, the amount of sampled gas is reduced through adsorption during gas sampling, failing to obtain concentration values at high accuracy. Thus, a high-accuracy gas sampling method replacing a conventional, heating-based method includes completely washing out, with an absorption liquid therefor serving as a washing liquid, a target ammonia gas deposited on the inner wall of a flue gas sampling tube (2), whereby the gas component is thoroughly collected. Through analysis of the thus-obtained washing liquid, high-accuracy analysis can be attained.

Description

technical field [0001] The present invention relates to a method for sampling a flue gas for an analyte comprising a gas component having a high adsorbability (ie highly adsorbable). This method is used to determine very precisely the small amount of ammonia contained in the flue gas and the analytical data obtained is used to adjust the ammonia level added to the flue gas NOx removal plant. Background technique [0002] Conventionally, gas composition analysis of flue gases is usually performed by wet-format analysis (including in situ sampling of analytes from the flue gas) or by gas monitoring. In flue gas analysis, gas components such as nitrogen oxides and sulfur oxides can be sampled without special technical problems in the sampling step and can be easily determined with target accuracy. [0003] In the present invention, the gas component to be determined (for example ammonia) has a high adsorbability. These gas components will be largely adsorbed on the inner wall...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22
CPCG01N1/2214G01N1/2258Y10T436/255
Inventor 岛田裕田村晋也德永直行吉川惠
Owner THE CHUGOKU ELECTRIC POWER CO INC