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PLS local fitting-based SCR reactor information rapid acquisition method

A technology of SCR reactor and acquisition method, which is applied in the field of rapid acquisition of SCR reactor information based on PLS local fitting, and can solve the problems of long calculation time, inconvenient real-time online monitoring, large errors, etc.

Active Publication Date: 2019-05-17
DATANG NANJING ENVIRONMENTAL PROTECTION TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can generally draw general conclusions well, but this method has disadvantages such as long calculation time, large error when operating under variable conditions, and inconvenient real-time online monitoring.

Method used

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  • PLS local fitting-based SCR reactor information rapid acquisition method
  • PLS local fitting-based SCR reactor information rapid acquisition method
  • PLS local fitting-based SCR reactor information rapid acquisition method

Examples

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Embodiment 1

[0096] Such as Figure 1-2 As shown, taking the denitrification system of a 600MW coal-fired unit as an example, establish its CFD mathematical model and obtain numerical simulation data, and obtain the single-channel experimental data of the catalyst layer of the unit through the test bench, and enter it into the SQL database ,Proceed as follows:

[0097] (1) Establish the independent variable database and dependent variable database: According to the chemical reaction experiments of SCR fresh and degraded catalysts, obtain the parameters related to the chemical reaction rate constant: temperature, pre-exponential factor and activation energy; establish the chemical reaction rate constant and related parameter database , and bring the database and the SCR denitrification reaction model into fluent to obtain the database for numerical simulation, and finally obtain the independent variable database and dependent variable database. The measured data include inlet flue gas veloc...

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Abstract

The invention discloses a PLS local fitting-based SCR reactor information rapid acquisition method. The method comprises the following steps of for a specific SCR denitration system, obtaining simulation data and experimental data of an SCR catalyst layer under a wide load working condition through CFD software and a test bed, and inputting the simulation data and the experimental data into an SQLsever database; when a specific entry parameter is input, extracting a local fitting data set closest to the input parameter on the basis of a variance minimization principle through an SQL statement;adopting a partial least square method to quickly carry out local fitting on the image; and returning and adding a result to the original database, so that the data set is enriched and developed. According to the PLS local fitting-based SCR reactor information rapid acquisition method provided by the invention, the outlet NO concentration and the ammonia escape rate can be obtained, the distribution conditions of a catalyst layer outlet concentration field and a flow field can be rapidly obtained, and the reasonable operation guidance is provided for power plant operation personnel.

Description

technical field [0001] The invention belongs to the field of industrial out-of-stock technology, and in particular relates to a method for rapidly acquiring information of an SCR reactor based on PLS local fitting. Background technique [0002] Due to the introduction of the new national emission policy, new requirements have been put forward for the emission standards of pollutants. In order to meet the new emission requirements, major power plants have basically completed the task of denitrification system transformation. At present, low NOx combustion technology and flue gas denitrification technology are generally used in combination in power plant boilers to achieve ultra-low emissions. Selective catalytic reduction (SCR) flue gas post-treatment technology has been widely used in denitrification systems of major power stations due to its high denitrification efficiency and mature technology. SCR denitrification technology refers to the selective removal of NO in the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F16/2455G06F16/28G06Q50/06
Inventor 王虎常峥峰黄力纵宇浩张鑫陈立志司风琪
Owner DATANG NANJING ENVIRONMENTAL PROTECTION TECH
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