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Flue dust concentration on-line measurement system, measurement equipment and on-line measurement method

A flue dust and measurement system technology, which is applied in the direction of measuring devices, suspension and porous material analysis, scientific instruments, etc., can solve the problems of inconvenient installation, inaccurate measurement results, short service life, etc., and achieve cost reduction and measurement The effect of accurate value and long service life

Active Publication Date: 2017-09-29
江苏菉润环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the online measurement device for dust particles in the flue is generally installed on the chimney. The receiving unit, when the dust is discharged from the chimney, it will block the transmission of the light signal, thereby measuring the dust concentration, but the current online measurement device for flue dust concentration still has the following disadvantages: 1. This online measurement device can only be adapted to dry It is used in an environment with a high concentration, but currently a lot of waste gas has to be washed before being discharged, and the discharge concentration is low, so that the waste gas is high-humidity and low-concentration waste gas, and some liquid water vapor in the waste gas will affect it and be mistaken for dust. However, the measurement results are inaccurate, and the current measuring instruments cannot be used in high-humidity and high-velocity exhaust gas stacks.
2. The current measurement device is very inconvenient to install, and it needs to install a light receiving unit and a light emitting unit, and it will be difficult to maintain in the future
3. Due to the complex environment inside the chimney, the humidity is high, the wind speed is high, and the temperature of the exhaust gas is around 60°C, the light-scattering dust meter is easy to be damaged when it works for a long time in such a complex and harsh environment, and its service life is short and stable. Insufficient performance, a special dust meter is needed for this harsh environment, and the special dust meter still cannot guarantee long-term stable use, and the special dust meter is expensive

Method used

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  • Flue dust concentration on-line measurement system, measurement equipment and on-line measurement method
  • Flue dust concentration on-line measurement system, measurement equipment and on-line measurement method
  • Flue dust concentration on-line measurement system, measurement equipment and on-line measurement method

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Embodiment 1

[0028] Such as figure 1 As shown, what this embodiment discloses is a kind of flue 3 dust concentration on-line measurement system, this flue 3 can be a chimney, also can be other pipelines that need to measure the dust concentration, the on-line measurement system of this embodiment measures The exhaust gas is the same as the exhaust gas that can be measured by the current online measurement system. In this embodiment, the high-humidity dust gas can be measured, and the concentration is relatively low.

[0029] The on-line measurement system includes a sampling pipe 1 and a branch joint 2 fixed to each other. One end of the sampling pipe 1 is a sampling air inlet end and is located in the flue 3. The sampling air inlet end is an arc-shaped elbow, and The tuyere is downward, and the other end is the sampling gas outlet. The branch joint 2 is provided with a relatively independent dilution chamber 22 and a split chamber 21. The split chamber 21 is located at the upstream of the...

Embodiment 2

[0039] Such as figure 2 and image 3 As shown, this embodiment discloses an on-line measurement device for the dust concentration of the flue 3, the on-line device includes a cabinet 12, and the on-line measurement system in the first embodiment is installed in the cabinet 12. Because of the above-mentioned on-line measurement system possessed by the measuring device, it also has all the above-mentioned functions and beneficial effects.

[0040] Preferably, the cabinet 12 includes an upper cavity 121 and a lower cavity 122, the dust concentration measuring instrument 55 is arranged in the lower cavity 122, a heat dissipation device is arranged in the lower cavity 122, and the heating pipe 51 is arranged in the upper cavity Within 121. Utilize heating pipe 51 to be in upper cavity 121, separate from lower cavity 122, therefore, the working environment of dust concentration measuring instrument 55 in lower cavity 122 is better, and service life is long, to the quality and req...

Embodiment 3

[0042] This embodiment discloses an on-line measurement method for dust concentration in the flue 3, which is based on the on-line measurement equipment in Embodiment 1, and the method includes: extracting V1 volume units of the exhaust gas in the flue 3 as the sampling gas, In the sampling gas of the V1 volume unit, the sampling gas of the V11 volume unit is shunted into the flue 3, and the gas of the V12 volume unit is mixed with the heated dry gas of the V2 volume unit to form a mixed gas to be tested, and the mixed gas is to be tested. The gas is heated and dried again, and then the mixed gas to be tested is distributed again, the mixed gas to be tested with V3 volume units is returned to the flue 3, and the mixed gas to be tested with V4 volume units is dried and then enters the dust concentration measuring instrument 55 The dust content is measured, and the measured V4 volume unit of mixed gas to be tested flows back into the flue 3 .

[0043] Adopt above-mentioned metho...

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Abstract

The invention discloses an online measurement system for flue dust concentration, which comprises a sampling pipe and a branch joint. The branch joint is provided with a dilution chamber and a distribution chamber, and the sampling pipe communicates with the dilution chamber and the distribution chamber respectively. , the sampling gas outlet end of the sampling tube is connected with the measuring pipeline, the dilution chamber is connected with the clean gas feeding pipeline system, the split chamber is connected with the main split pipeline system, and the measuring pipeline includes a three-way sampler, a heating tube, Drying pipe, dust concentration measuring instrument, sub-distribution pipeline system, sampling pump, third flowmeter and fourth flowmeter, the sampled gas is distributed through the three-way sampler, and part of it is returned to the main distribution pipeline through the sub-distribution pipeline system The system finally returns to the flue, while the other part is dried and then enters the dust concentration measuring instrument for measurement, and then returns to the flue. The online measurement system can use the current mainstream atmospheric dust concentration measuring instrument to measure high-humidity flue gas, with accurate measurement results and high stability.

Description

technical field [0001] The invention relates to an on-line measurement system of flue dust concentration, and also relates to an on-line measurement device and an on-line measurement method. Background technique [0002] The exhaust gas from the factory is discharged into the atmosphere through pipes and chimneys. These exhaust gases are collectively called flues, and the exhaust gas from the factory has a lot of components, including some dust particles. At present, the online measurement device for dust particles in the flue is generally installed on the chimney. The receiving unit, when the dust is discharged from the chimney, it will block the transmission of the light signal, thereby measuring the dust concentration, but the current online measurement device for flue dust concentration still has the following disadvantages: 1. This online measurement device can only be adapted to dry It is used in an environment with a high concentration, but currently a lot of waste g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/06
Inventor 范人杰施伟雄
Owner 江苏菉润环境科技有限公司
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