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Incinerator Harmful Emission Standard Control System and Method Based on Error Backpropagation

A technology of error backpropagation and emission compliance, applied in general control systems, control/regulation systems, adaptive control, etc., can solve problems such as COD exceeding the standard and COD cannot be measured online

Inactive Publication Date: 2016-01-06
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of the existing incinerator process COD that cannot be measured online and COD seriously exceeds the standard, the present invention provides an error backpropagation incinerator harmful emission control system and method, which has the functions of online measurement of COD and effective monitoring of COD. It has the characteristics of exceeding the standard, controlling COD emission to meet the standard, anti-noise and strong self-learning ability

Method used

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  • Incinerator Harmful Emission Standard Control System and Method Based on Error Backpropagation
  • Incinerator Harmful Emission Standard Control System and Method Based on Error Backpropagation
  • Incinerator Harmful Emission Standard Control System and Method Based on Error Backpropagation

Examples

Experimental program
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Effect test

Embodiment 1

[0059] refer to figure 1 , figure 2 , an incinerator harmful substance discharge standard control system for error backpropagation, including an on-site intelligent instrument 2 connected to an incinerator 1, a DCS system and a host computer 6, and the DCS system includes a data interface 3, a control station 5 and a database 4, The field intelligent instrument 2 is connected with the data interface 3, and the data interface is connected with the control station 5, the database 4 and the upper computer 6, and the upper computer 6 includes:

[0060] The data preprocessing module is used to preprocess the model training samples input from the DCS database, centralize the training samples, that is, subtract the average value of the samples, and then standardize them:

[0061] Calculate the mean: TX ‾ = 1 N Σ i = 1 ...

Embodiment 2

[0085] refer to figure 1 , figure 2 , an incinerator harmful substance emission control method based on error backpropagation, the specific implementation steps of the control method are as follows:

[0086] 1) For the process object of pesticide production waste liquid incinerator harmful emissions, according to the process analysis and operation analysis, determine the key variables used, and collect the data of the variables when the production is normal from the DCS database as the input matrix of the training sample TX, Collect the corresponding COD and the operating variable data to make the COD emission reach the standard as the output matrix Y;

[0087] 2) Preprocess the model training samples input from the DCS database, and centralize the training samples, that is, subtract the average value of the samples, and then standardize them so that the mean value is 0 and the variance is 1. This processing is accomplished using the following algorithmic procedure:

[008...

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Abstract

The invention discloses an error-back-propagation incinerator harmful substance emission standard reaching control system and method. The system comprises an incinerator, an intelligent instrument, a DCS, a data interface and an upper computer. The DCS comprises a control station and a database; the intelligent instrument used for measuring variables easy to measure is connected with the DCS, and the DCS is connected with the upper computer through the data interface. Firstly, preprocessing and fuzzification are conducted on a training sample by the upper computer, and a new input matrix is acquired; then, an error-back-propagation neural network is adopted for building a regression model for the new input matrix, and prediction output is acquired; finally, defuzzification is conducted on the output of the error-back-propagation neural network, and system output is acquired; the upper computer further has model updating and result display functions. The error-back-propagation incinerator harmful substance emission standard reaching control system and method have the advantages of measuring COD in an on-line mode, effectively monitoring whether the COD exceeds a standard or not, controlling the COD to guarantee up-to-standard emission, being resistant to noise and strong in self-learning ability and the like.

Description

technical field [0001] The invention relates to the field of pesticide production, in particular to a control system and method for controlling the discharge of harmful substances in an incinerator through error backpropagation. Background technique [0002] my country is a big country in the production and use of pesticides. There are about 4,100 pesticide manufacturers, of which more than 500 are active pharmaceutical manufacturers. Statistics from the Ministry of Agriculture show that the total output of pesticides from January to November 2008 reached 1.711 million tons. The irrationality of the structure of pesticide varieties in my country has made environmental governance more difficult. According to incomplete statistics, the national pesticide industry discharges about 1.5 billion tons of wastewater every year. Among them, only 1% of the processed ones have reached the standard. [0003] Incineration is currently the most effective, thorough and widely used method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
Inventor 刘兴高许森琪张明明
Owner ZHEJIANG UNIV
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