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A method for controlling furnace temperature

A control method and furnace temperature technology, applied in the direction of combustion method, incinerator, combustion type, etc., to achieve accurate flow regulation, reduce flow resistance, and improve measurement accuracy.

Active Publication Date: 2020-10-30
阮红艺 +1
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a method for controlling the temperature of the furnace, which realizes the dynamic control of the entire requirement of the garbage disposal furnace from ignition to stable combustion and the temperature point of ideal flue gas discharge, and solves the problem of the furnace temperature when the garbage disposal furnace is working. Constant temperature adjustment problem, to achieve reliable control of air flow, thereby improving the response speed of furnace temperature adjustment

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Embodiment Construction

[0024] Such as figure 1 Shown, the concrete steps of the control method of a kind of furnace temperature of the present invention are as follows:

[0025] The first step: initialization, input pre-stored data. Input the pre-stored data to the controller through the input display device, that is, the corresponding relationship table between PID parameters and temperature difference, the target value of furnace temperature, and the maximum difference ΔT between two adjacent data collected by the same temperature sensor max , ΔT max = 1 degree.

[0026] Step 2: Determine whether the temperature in the furnace has risen to 80% of the set value, and determine the real-time temperature T(k) of the furnace at time k.

[0027]

[0028] In the formula: i=0~n, wherein, n is the number of temperature sensors in the furnace;

[0029] beta i is the weight coefficient of the i-th temperature sensor, and the weight coefficient is 0 to 1. The distance between the temperature sensor an...

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Abstract

The invention relates to a controlling method for furnace temperature. The controlling method comprises the following steps that step one, prestored data are imported; step two, the real-time temperature T (k) (please see the specification / description for the formula) of the furnace at K time is determined; step three, the rotating speeds n1 and n2 of two draught fans are determined, the T (k) iscompared with Tc=(Tb-T0)*80%, wherein the Tb is the target temperature of the furnace; if the T (k) is smaller than or equal to the Tc, the n1 is equal to N1 and the n2 is equal to N2, if not, n1 is equal to the formula (please see the specification / description for the formula), and n2 is equal oto the formula (please see the specification / description for the formula); and PDI regulation control is carried out and the formula (please see the specification / description for the formula) is carried out; and step four, based on the rotating speeds n1and n2, the two draught fans in a waste treatmentdevice are driven. Thermostatic control of the furnace temperature and air flow control are realized, and the response speed of the furnace temperature regulating is increased.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, and in particular relates to a method for controlling the temperature of a furnace. Background technique [0002] The combustion temperature control of the hearth of the existing garbage disposal furnace is to control the flow rate of the air entering the hearth through the manual switch valve. Unstable and uncontrollable, resulting in slow response of manual control of the furnace temperature, large fluctuations in the combustion temperature in the furnace, and a large number of harmful gas components, which is not conducive to environmental protection. Contents of the invention [0003] The object of the present invention is to provide a method for controlling the temperature of the furnace, which realizes the dynamic controllability of the entire requirement of the garbage disposal furnace from ignition to stable combustion and the temperature point of ideal flue gas discharge, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G5/50
CPCF23G5/50F23G2207/101
Inventor 阮红艺武春燕
Owner 阮红艺
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