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A flue gas measuring device

A measuring device and flue gas technology, applied in the direction of measuring devices, analyzing gas mixtures, instruments, etc., can solve the problems of interference of measurement results, high test cost, and no longer accurate, etc., to reduce test cost, increase test speed, improve The effect of accuracy

Active Publication Date: 2017-11-21
DATANG ENVIRONMENT IND GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Putting the new environmentally friendly products into the actual flue gas conditions means putting them into the running environmental protection treatment system or equipment. Taking the new product determination test of the denitrification catalyst for the flue gas of a coal-fired boiler as an example, at present, for denitrification The performance test of catalyst products needs to replace the whole layer of catalyst products in the denitrification reactor. This test mode requires a large number of catalyst products to be replaced, resulting in high cost of product experiments, and in the case of uncertain performance, it is easy to cause During the actual operation process, there are accidents such as excessive discharge of pollutants
[0008] There are also some environmental protection new product tests. In order to minimize the impact of environmental protection new product testing on the operation of environmental protection treatment systems or environmental protection treatment equipment, generally only part of the existing facilities or preparations can be replaced with environmentally friendly new products.
When testing new environmentally friendly products, the pollutants in the flue gas at the inlet and outlet of the test block are measured. However, as mentioned above, the composition of the actual flue gas and the operating environment are very complicated. The inlet and outlet of new environmentally friendly products Both the smoke composition and the smoke flow field will be interfered by other existing facilities or preparations around them, which often affects the accuracy of the measurement results
For example, if the mathematical average method of taking the average value after multiple measurements over multiple periods of time is used, although the measurement accuracy can be improved to a certain extent, because the performance parameters of new environmentally friendly products may also change gradually in the flue gas environment, the measurement The more times, the longer the elapsed time, the measurement results may be disturbed by more factors, and become less accurate

Method used

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  • A flue gas measuring device

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Taking a 300,000-kilowatt coal-fired thermal power boiler flue gas denitrification catalyst as an example, the number of catalyst modules arranged in a single denitrification reactor is 48. If the performance test of the new catalyst product is to be carried out on the flue gas denitrification system, the traditional method is to The replacement of 48 modules in the whole layer not only costs a lot for the production of trial products, but also increases the construction workload for the replacement of the whole layer. In addition, if the performance of the new product tested is not stable, it may lead to the situation that the flue gas emission of the whole boiler does not meet the standard due to the performance test.

[0040] while using something like figure 1 In the structure shown in , only one of the 48 catalyst modules needs to be replaced, and a matching isolation sleeve with a length of 1 meter is installed on the test module, so that new product tests can be ...

Embodiment 2

[0044] Taking a 300,000-kilowatt coal-fired thermal power boiler flue gas denitrification catalyst as an example, a similar figure 1 The structure of the new product test, the modification is that more than two catalyst modules can be replaced on the catalyst layer at the same time, and the performance test of more than two new products can be carried out, which greatly improves the progress of the new product performance test work. In this case, each new product module test does not interfere with each other, and the working conditions of each new product module are consistent, which is convenient for quantitative comparison of the performance of different new products.

Embodiment 3

[0046] Taking a 300,000-kilowatt coal-fired thermal power boiler flue gas denitrification catalyst as an example, due to the limitation of site space conditions, the design height of the denitrification reactor is different. When the space is limited, the effective space height of the denitrification catalyst inlet or outlet is relatively short. In this case, in order to ensure that the flue gas samples taken by the flue gas analysis and sampling device at the inlet and outlet of the test module are representative, the height of the inlet and outlet casings should not be less than 0.5 meters, otherwise it will affect the measurement data and Accuracy of new product performance testing. When the inlet and outlet space is sufficient, the height of the casing should also be controlled not to exceed 2 meters to ensure that the flue gas flow in the test module is similar to that of the overall denitration catalyst layer and to ensure that the test test is very representative.

[00...

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Abstract

The invention provides a smoke measuring device which is arranged in a smoke channel. An environment-friendly product layer is arranged in the smoke channel; the environment-friendly product layer comprises a plurality of environment-friendly product units; at least one of the environment-friendly product units is arranged as an environment-friendly new product test block and comprises at least one smoke inlet insulating sleeve and at least one smoke outlet insulating sleeve respectively arranged on the two sides of the environment-friendly new product test block; one ends of the smoke inlet insulating sleeve and smoke outlet insulating sleeve in contact with the environment-friendly new product test block are completely closed by the environment-friendly new product test block; and at least one smoke sampling gun is arranged on each of the smoke inlet insulating sleeve and smoke outlet insulating sleeve. When the environment-friendly new product test block is measured in smoke environment, the inlet smoke and the outlet smoke in the area of the test block are isolated, so that the pollutants in the smoke can be accurately measured, the assessing accuracy of the new product performance is increased and the influence of the new product performance test on the running of the environment-friendly system is reduced to the minimal.

Description

technical field [0001] The invention relates to the field of environmental protection technology, in particular to a flue gas measuring device, in particular to a measuring device for performance testing of flue gas treatment test samples. Background technique [0002] The Development and Reform Commission issued the "Coal Power Energy Conservation and Emission Reduction Upgrading and Transformation Action Plan (2014-2020)" to strictly control the emission of air pollutants. Newly built coal-fired generating units (including units under construction and projects that have been included in the national thermal power construction plan) should simultaneously build advanced facilities with flushing water, denitrification and dust removal, and flue gas bypass channels must not be set up. The air pollutant emission concentration of new coal-fired generating units in the eastern region (Liaoning, Beijing, Tianjin, Hebei, Shandong, Shanghai, Jiangsu, Zhejiang, Fujian, Guangdong, Hai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/00
CPCG01N33/0004
Inventor 李春雨李穹马务赵宇明陶君董越姚学忠张巍申镇王长清
Owner DATANG ENVIRONMENT IND GRP
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