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Method and equipment for determining the factors affecting the concentration of nitrogen oxides at the inlet of scr reactor

An SCR reactor, nitrogen oxide technology, applied in the field of data processing

Active Publication Date: 2021-01-26
DATANG ENVIRONMENT IND GRP
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Problems solved by technology

[0004] In view of this, the purpose of one or more embodiments of the present disclosure is to propose a method and equipment for determining the factors affecting the concentration of nitrogen oxides at the inlet of the SCR reactor, so as to solve the problem of how to select the concentration of nitrogen oxides at the inlet of the SCR reactor in the related art. factor problem

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  • Method and equipment for determining the factors affecting the concentration of nitrogen oxides at the inlet of scr reactor
  • Method and equipment for determining the factors affecting the concentration of nitrogen oxides at the inlet of scr reactor
  • Method and equipment for determining the factors affecting the concentration of nitrogen oxides at the inlet of scr reactor

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Embodiment Construction

[0019] The technical solutions of the present disclosure will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are part of the embodiments of the present disclosure, but not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

[0020] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "top", "bottom", "front", " Or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be cons...

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Abstract

One or more embodiments of the present disclosure provide a method and equipment for determining factors affecting the concentration of nitrogen oxides at the inlet of an SCR reactor, and the method uses a pre-trained prediction model for the concentration of nitrogen oxides at the inlet of an SCR reactor The training samples are trained, and then the value of the objective function corresponding to the model is used as the ranking coefficient of each feature, and the set of all factor sequences is obtained by sorting the ranking coefficients, and the one that has the least influence on the concentration of nitrogen oxides at the inlet of the SCR reactor is deleted Factors, use the remaining factors to iteratively retrain the model and eliminate the least influential factors until the set is empty, sort the factors according to the order of the eliminated factors, and obtain the final sorted set of factors, so that the SCR response of each factor can be obtained Sorting the factors according to the degree of influence on the concentration of nitrogen oxides at the inlet of the SCR reactor can effectively select the factors that affect the concentration of nitrogen oxides at the inlet of the SCR reactor.

Description

technical field [0001] One or more embodiments of the present disclosure relate to the technical field of data processing, and in particular, to a method and device for determining factors affecting the concentration of nitrogen oxides at the inlet of an SCR reactor. Background technique [0002] At present, SCR (Selective Catalytic Reduction, Selective Catalytic Reduction) flue gas denitrification technology is widely used among common denitration technologies, and the control of ammonia injection is an important process. The calculation of the amount of ammonia injection is based on parameters such as NOx (nitrogen oxides), flue gas and oxygen at the inlet and outlet of the SCR reactor. The measurement accuracy of the inlet NOx concentration is very important to the amount of ammonia injection. At present, the real-time measurement of NOx components in flue gas is mainly carried out through CEMS (Continuous Emission Monitoring System, continuous emission detection system)....

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/27G06K9/62G06N3/04G06N3/08G06N20/10
CPCG06F30/27G06N3/08G06N20/10G06N3/044G06N3/045G06F18/24323G06F18/214
Inventor 袁照威孟磊谷小兵白玉勇崔焕民江澄宇马务杜明生宁翔岳朴杰
Owner DATANG ENVIRONMENT IND GRP