Flue gas sampling system

A sampling system and flue gas technology, applied in the direction of sampling devices, etc., can solve the problems of inaccurate flue gas composition analysis, affecting flue gas composition, blockage of sampling passages, etc., to prevent dust from entering the sampling system, prolong service life, and improve accuracy. sexual effect

Active Publication Date: 2015-02-25
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that when the gun barrel of the existing smoke sampling system is inserted and drawn out of the flue, the gun head is deformed or damaged due to collision, and the smoke is directly sucked in, and the dust particles in the smoke are attached to the inner wall of the gun barrel. The sampling channel is blocked in the absorption bottle, which affects the analysis of the smoke components, and part of the pipe section of the gun barrel is exposed to low-temperature air. The sulfur dioxide and sulfur trioxide in the smoke in the pipe section are easy to condense, resulting in poor analysis of the smoke components. Accurate questions, and then provide a flue gas sampling system

Method used

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specific Embodiment approach 1

[0013] Specific implementation mode one: combine Figure 1-Figure 3 Describe this embodiment, a kind of flue gas sampling system of this embodiment comprises sampling gun, absorbing bottle 2 and sampling pump 3, described sampling gun comprises gun barrel 1, the flue gas outlet end 1-2 of gun barrel 1 and absorbing bottle The inlet of 2 is communicated, the outlet of absorption bottle 2 is communicated with the inlet of sampling pump 3, and described sampling gun also comprises protective cover 4, filtering system 5 and heating system 6;

[0014] The heating system 6 includes a heating sleeve 6-1, and the gun barrel 1 is equipped with a heating sleeve 6-1;

[0015] The protective cover 4 includes a flange 4-1, a protective ring 4-2 and a plurality of pillars 4-3, and the smoke inlet end 1-1 of the gun barrel 1 is inserted in the middle part of the flange 4-1. One end of each pillar 4-3 is connected to the flange 4-1, and the other ends of multiple pillars 4-3 are connected to...

specific Embodiment approach 2

[0018] Specific implementation mode two: combination figure 1 This embodiment will be described. The heating sleeve 6-1 in this embodiment is an electric heating coil. With such setting, the operation is convenient and the thermal efficiency is high. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0019] Specific implementation mode three: combination figure 1 To describe this embodiment, the heating sleeve 6-1 in this embodiment is a resistance heating coil. With such setting, the operation is convenient and the thermal efficiency is higher. Others are the same as in the first or second embodiment.

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Abstract

A flue gas sampling system relates to a sampling system and solves the problems that when the gun barrel of a conventional flue gas sampling system is inserted into or extracted out of the chimney flue, gun head deformation or damage and direct flue gas intake are caused by collision, dust particles in flue gas are adhered to the inner wall of the gun barrel and an absorption bottle to cause sampling channel blockage which influences analysis to flue gas components, part of pipeline section of the gun barrel is exposed in low temperature air, and sulfur dioxide and sulfur trioxide in the flue gas inside the pipeline section are easy to coagulate, resulting in inaccurate analysis to flue gas components. The flue gas sampling system comprises a sampling gun, the absorption bottle and a sampling pump; the sampling gun further comprises a protective cover, a filter system and a heating system; a heating sleeve is mounted on the gun barrel; the protective cover comprises a flange plate, a guard ring and a plurality of pillars, and the flue gas entry end of the gun barrel is inserted into the middle of the flange plate; the filter system comprises a filter cylinder and a protective screening; the filter cylinder is arranged between the guard ring and the flange plate. The flue gas sampling system provided by the invention is used for sampling flue gas of a chimney flue at the outlet of a fuel electric plant denitration system.

Description

technical field [0001] The invention relates to a sampling system, in particular to a sampling system for collecting flue gas from an outlet flue of a denitrification system in a thermal power plant. Background technique [0002] In order to understand the flue gas composition of the outlet flue of the denitrification system of the thermal power plant, so as to give the best ratio of denitrification agent and improve the denitrification efficiency (including the change of flue gas composition), it is necessary to test the performance of the denitrification equipment (including the denitrification equipment Sampling of flue gas during performance acceptance and performance test before and after equipment transformation), and chemical analysis of the samples. When sampling, use a flue gas component sampling gun. The barrel of the sampling gun is made of stainless steel pipe. Insert the tip of the gun into the flue, and suck the flue gas into the absorption bottle through the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/22
Inventor 殷晓红张金丽王育陈钟佟瑶赵文琛
Owner STATE GRID CORP OF CHINA
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