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System, method and equipment for predicting flue gas volume at inlet of scr reactor under variable load
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An SCR reactor and flue gas volume technology, which is applied in the field of denitration control, can solve the problems of inaccurate and irregular flue gas volume, excessive nitrogen oxides at the outlet of SCR denitration system, etc., and achieve the effect of preventing NOx from exceeding the standard.
Active Publication Date: 2021-07-20
DATANG ENVIRONMENT IND GRP
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[0003] Regarding the calculation of flue gas volume, it is currently difficult to have a relatively accurate large-scale flue gas measurement device that meets the control requirements, especially after the SCR denitrification transformation, the boiler flue layout is short and irregular, so it cannot meet the general flow measurement Installation requirements for pipelines
Moreover, it is difficult for general measuring devices to be used in such a flue with high flue temperature, high dust, and high corrosiveness. At the same time, the flue gas volume measured by the current instrument is not accurate, so it has an important impact on the final ammonia injection volume, which in turn leads to SCR denitrification. Exceeding the standard of nitrogen oxides at the system outlet
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Embodiment 1
[0081] The embodiment of the present invention provides a device for predicting flue gas volume at the inlet of the SCR reactor under variable load, such as image 3 As shown, it includes: a memory 30, a processor 32, and a computer program stored on the memory 30 and operable on the processor 32. When the computer program is executed by the processor 32, the following method steps are implemented:
[0082] Step 201, read the unit load data of the SCR denitrification reactor, preprocess and save the operation data; the group load data specifically includes: unit load history data, and unit load real-time data, wherein the The historical unit load data specifically includes: unit load, total air volume, inlet NOx, outlet NOx, flue gas oxygen content, and ammonia injection volume; the unit load real-time data specifically includes: unit load, total air volume, and flue gas oxygen content ;
[0083] Step 201 specifically includes:
[0084] Perform preprocessing on the read load...
Embodiment 2
[0105] An embodiment of the present invention provides a computer-readable storage medium, where a program for realizing information transmission is stored on the computer-readable storage medium, and when the program is executed by the processor 32, the following method steps are implemented:
[0106] Step 201, read the unit load data of the SCR denitrification reactor, preprocess and save the operation data; the group load data specifically includes: unit load history data, and unit load real-time data, wherein the The historical unit load data specifically includes: unit load, total air volume, inlet NOx, outlet NOx, flue gas oxygen content, and ammonia injection volume; the unit load real-time data specifically includes: unit load, total air volume, and flue gas oxygen content ;
[0107] Step 201 specifically includes:
[0108] Perform preprocessing on the read load data set. During the preprocessing process, the read data is mainly processed to facilitate the later train...
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Abstract
The invention discloses a system, method and equipment for predicting flue gas volume at the inlet of an SCR reactor under variable loads. The system includes: a data reading module for reading unit load data, preprocessing and saving the operating data; load judgment Module, according to the unit load data to determine the pre-divided load range to which the unit load belongs, and send the unit load data corresponding to different unit loads to the flue gas volume prediction model of different load ranges in the flue gas volume training module; According to the unit load data training, multiple flue gas volume prediction models in different load ranges are obtained, and the unit load data corresponding to different unit loads are sent to the flue gas volume prediction model in the corresponding load range, and the smoke volume prediction model is obtained. The flue gas volume prediction results output by the gas volume prediction model; the result display module displays the flue gas volume prediction results. The prediction of flue gas volume at the inlet of the SCR reactor can be realized quickly and effectively.
Description
technical field [0001] The invention relates to the technical field of denitrification control, in particular to a system, method and equipment for predicting flue gas volume at the inlet of an SCR reactor under variable load. Background technique [0002] With the promulgation of a series of national policies and regulations, the emission of air pollutants from coal-fired power plants has been strictly regulated, and various power plants have successively carried out retrofits for ultra-low emission of flue gas. Selective Catalytic Reduction (SCR) flue gas denitrification technology is a commonly used denitrification technology, and the measurement of flue gas is a key issue in the SCR denitrification control system. [0003] Regarding the calculation of flue gas volume, it is currently difficult to have a relatively accurate large-scale flue gas measurement device that meets the control requirements, especially after the SCR denitrification transformation, the layout of th...
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