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System and method for controlling combustion of mechanical grate incinerator

A mechanical grate and control system technology, applied in the direction of combustion method, combustion type, incinerator, etc., can solve the problems of atmospheric and human hazards, affecting the power generation of environmental protection emission indicators, and the power generation of generator sets that cannot reach environmental protection, etc. Achieve the effect of reducing cost and expenditure and excellent combustion control effect

Active Publication Date: 2011-11-09
EVERBRIGHT ENVIRONMENTAL PROTECTION TECH RES INST SHENZHEN CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among them, the combustion control system of the mechanical grate incinerator is the core part of the mechanical grate incinerator. The operation of the control system will directly affect the operation status and steam output of the incinerator, and then affect the environmental protection emission indicators and the power generation of the generator set. amount, etc., the existing control system is not ideal, can not meet the requirements of environmental protection, power generation of generator sets, and even produce a lot of harmful gases, such as dioxin, etc., which are harmful to the atmosphere and human body

Method used

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  • System and method for controlling combustion of mechanical grate incinerator
  • System and method for controlling combustion of mechanical grate incinerator
  • System and method for controlling combustion of mechanical grate incinerator

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Experimental program
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Embodiment approach

[0076] As an implementable manner, the adjustment process of the PID controller is:

[0077] U(n)=Kp*E(n)+Kp*T*∑E(i) / Ti+KP*Td*(E(n)-E(n-1)) / T+U0

[0078] in:

[0079] U(n) is the output value of the PID controller, that is, to adjust the opening of the control valve;

[0080] Kp is the P parameter value of the PID controller; E(n) is the deviation value, that is, the difference between the given value of the PID controller and the adjusted process parameter;

[0081] T is the PID controller adjustment cycle time;

[0082] ∑E(i) is the cumulative value of the deviation of the PID controller;

[0083] Ti is the I parameter value of the PID controller; Td is the D parameter value of the PID controller;

[0084] E(n-1) is the deviation of the last adjustment cycle of the PID controller;

[0085] U0 is the initial output value of the PID controller, which is generally 0. )

[0086] The control method of the feeding grate control system is described in detail below:

[0087]...

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Abstract

The invention discloses a system and a method for controlling the combustion of a mechanical grate incinerator. The system comprises a feed grate control system, an incinerator grate control system, an air volume control system and a temperature control system, wherein the feed grate control system is used for regulating and controlling the feed stroke and the forward-feeding speed of a feed grate in the mechanical grate incinerator by utilizing a proportion integration differentiation (PID) controller; the incinerator grate control system is used for controlling the sliding number of a sliding furnace tile and the turnover number of a turnover furnace tile in an incinerator grate of the mechanical grate incinerator within each control period; the air volume control system is used for regulating and controlling the rotational speeds and the air volume of a primary air blower and a secondary air blower by utilizing the PID controller in the whole combustion process; and the temperature control system is used for regulating and controlling the temperature of the primary air blower and a furnace wall in the whole combustion process. The system can meet the requirements of environment friendliness and power generation, and can reduce the cost.

Description

technical field [0001] The invention relates to the technical field of garbage incineration, in particular to a combustion control system and a control method of a mechanical grate incinerator for municipal solid waste incineration for power generation. Background technique [0002] my country's economic development and urbanization process have led to a substantial increase in the amount of urban domestic waste. Waste incineration power generation is an effective way to make waste harmless, reduce, and recycle waste. Waste incineration treatment can not only achieve environmental protection effects, but also waste heat from waste incineration It can generate steam for power generation, heat supply, energy saving, and it is a better resource recycling method. [0003] The key main equipment of domestic waste incineration power plants - mechanical grate incinerator. The main feature of the mechanical grate incinerator is that the garbage is piled on the grate, and the inciner...

Claims

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Application Information

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IPC IPC(8): F23G5/50
Inventor 陈涛朱福刚王健生苏小江王立中郭若军
Owner EVERBRIGHT ENVIRONMENTAL PROTECTION TECH RES INST SHENZHEN CO LTD
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