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Continuous sampling device and method for SO3 at smoke outlet of chimney of coal-fired power plant

A technology for smoke exhaust from chimneys and coal-fired power plants, applied in sampling devices, sampling, measuring devices, etc., can solve problems such as discontinuous sampling, and achieve the effect of solving intermittent sampling and improving flexibility

Pending Publication Date: 2021-12-17
ZHEJIANG TIANDI ENVIRONMENTAL PROTECTION TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the invention is to overcome the coal-fired flue gas SO in the prior art 3 During the sampling process, SO 3 Sampling discontinuous problem, provide a coal-fired power plant chimney exhaust SO 3 Continuous sampling device and method, the device and method realize the SO 3 Continuous sampling, thus ensuring that coal-fired power plant SO 3 Continuous monitoring of concentration emissions, and the flexibility of adjusting the length of the high-temperature sampling probe into the chimney

Method used

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  • Continuous sampling device and method for SO3 at smoke outlet of chimney of coal-fired power plant

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Experimental program
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Effect test

Embodiment 1

[0027] The first embodiment of the present application provides a coal-fired power plant chimney exhaust port SO 3 Continuous sampling devices such as figure 1 As shown, it includes: high temperature sampling probe 1, mounting flange 2 and sampling box shell 7. The high temperature sampling probe rod 1 extends into the chimney exhaust port 11 , and the high temperature sampling probe rod 1 is fixed on the outer wall of the chimney exhaust port 11 through the mounting flange 2 ;

[0028] The high temperature sampling probe 1 includes an alloy filter 1 101 , an alloy filter 2 102 , an inner tube 1 103 , an inner tube 2 104 , a quartz filter element 1 105 , a quartz filter element 2 106 and a heating insulation layer 107 . Alloy filter one 101 is connected with one end of inner tube one 103, and the other end of inner tube one 103 is connected with quartz filter element one 105 to form a sampling channel; alloy filter two 102 is communicated with one end of inner tube two 104, a...

Embodiment 2

[0032] The second embodiment of the present application provides a coal-fired power plant chimney exhaust port SO 3 The working method of the continuous sampling device includes the following steps:

[0033] S1. The mounting flange 2 is installed on the outer wall of the chimney exhaust port 11 of the coal-fired power plant. The high temperature sampling probe 1 is fixed on the chimney exhaust port 11 through the mounting flange 2. By moving the high temperature sampling probe 1 and the mounting flange The relative position of 2 adjusts the length of the high temperature sampling probe 1 extending into the inside of the chimney exhaust port 11 . When the device is running, set the temperature of the temperature controller 9, and the SO must be guaranteed within the set temperature range. 3 In the gaseous state, preferably 300°C, the heating and insulating layer 107 is heated, maintained at the set temperature and kept stable.

[0034] S2. After the temperature is stable, sta...

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Abstract

The invention relates to a continuous sampling device for SO3 at a smoke outlet of a chimney of a coal-fired power plant. The continuous sampling device comprises a high-temperature sampling probe rod, a mounting flange and a sampling box shell, wherein the high-temperature sampling probe rod extends into a chimney smoke outlet and is fixed on the chimney smoke outlet through the mounting flange, the outer end of the high-temperature sampling probe rod is connected with the sampling box shell, the high-temperature sampling probe rod comprises an alloy filter I, an alloy filter II, an inner pipe I, an inner pipe II, a quartz filter core I and a quartz filter core II, the alloy filter I is communicated with one end of the inner pipe I, the other end of the inner pipe I is connected with the quartz filter core I, the alloy filter II is communicated with one end of the inner pipe II, and the other end of the inner pipe II is connected with the quartz filter core II. According to the invention, continuous sampling of smoke gas SO3 of a coal-fired power plant is realized based on a time-division complementary mode by adopting a double-path inner pipe design, so that the problem of discontinuous sampling is solved, and continuous monitoring of SO3 emission of the coal-fired power plant is facilitated.

Description

technical field [0001] The present invention relates to a kind of SO 3 Sampling device and method, in particular to a coal-fired power plant chimney exhaust port SO 3 Continuous sampling device and method. Background technique [0002] SO in flue gas emissions from coal-fired power plants 3 It will aggravate air pollution and cause adverse effects such as equipment corrosion, so the SO in the flue gas emitted by coal-fired power plants 3 It is necessary to monitor the concentration in real time. At present, SO in coal-fired flue gas 3 There are two types of concentration emission measurement: chemical method and spectroscopic method. The former is difficult to achieve online monitoring, and the latter is easy to achieve SO with a spectrum analyzer. 3 Online monitoring. Therefore, SO in coal-fired flue gas 3 Sampling Continuity of SO 3 Concentration emission monitoring is critical. [0003] At present, for coal-fired power plant chimney exhaust SO 3 Sampling adopts ...

Claims

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Application Information

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IPC IPC(8): G01N1/24
CPCG01N1/2258
Inventor 尤晨昱彭志敏俞峰苹胡达清林王坚赵金龙葛春亮季志江陈春峰郑志坤
Owner ZHEJIANG TIANDI ENVIRONMENTAL PROTECTION TECH CO LTD
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