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System, method and equipment for predicting flue gas amount at inlet of SCR reactor under variable load

A technology of SCR reactor and flue gas volume, applied in the field of denitrification control, can solve the problems of inaccurate and irregular flue gas volume, short layout of boiler flue, etc., achieve precise flue gas volume and prevent NOx from exceeding the standard

Active Publication Date: 2020-09-04
DATANG ENVIRONMENT IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[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

Method used

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  • System, method and equipment for predicting flue gas amount at inlet of SCR reactor under variable load
  • System, method and equipment for predicting flue gas amount at inlet of SCR reactor under variable load
  • System, method and equipment for predicting flue gas amount at inlet of SCR reactor under variable load

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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 the flue gas amount at inlet of SCR reactor under a variable load, and the system comprises: a data reading module which reads theload data of a unit, and carries out the preprocessing and storage of operation data; a load judgment module which is used for judging a pre-divided load interval range to which the unit load belongsaccording to the unit load data, and sending the unit load data corresponding to different unit loads to the flue gas quantity prediction models in different load interval ranges in the flue gas quantity training module; a smoke quantity training module which is used for training according to the unit load data to obtain a plurality of smoke quantity prediction models in different load interval ranges, sending the unit load data corresponding to different unit loads to the smoke quantity prediction models in the corresponding load interval ranges, and obtaining smoke quantity prediction results output by the smoke quantity prediction models; and a result display module which is used for displaying the smoke quantity prediction result. The prediction of the flue gas quantity at the inlet of the SCR reactor can be quickly and effectively realized.

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...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06G06K9/62
CPCG06Q10/04G06Q50/06G06F18/24323
Inventor 袁照威孟磊谷小兵白玉勇李本锋曹书涛马务陈海杰宁翔杜明生
Owner DATANG ENVIRONMENT IND GRP