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Intelligent automatic control method of grate-firing coal burning boiler with energy-saving operation

A technology for the operation of coal-fired boilers and boilers. It is applied in the control of combustion, electrical program control, and program control in sequence/logic controllers. The effect of thermal efficiency

Inactive Publication Date: 2011-01-19
NANJING RENTAIFAEN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It has been proved that these methods are not online real-time measurement, and empirical observation is difficult to be accurate, so there is a serious lag and inaccuracy from observation, measurement to adjustment
As a result, it is impossible to adjust the operating parameters of the boiler in time and accurately, so as to achieve the purpose of reducing the loss of smoke exhaust (Q2) and mechanical incomplete combustion loss (carbon content of slag Q4) and stabilizing the thermal efficiency of boiler operation

Method used

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  • Intelligent automatic control method of grate-firing coal burning boiler with energy-saving operation
  • Intelligent automatic control method of grate-firing coal burning boiler with energy-saving operation

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Embodiment Construction

[0025] The application of the present invention in a mechanized layer-fired coal-fired boiler will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] In the embodiment, the automatic control system is composed of PLC+industrial computer; the temperature of the slag in the combustion section is collected using an embedded temperature sensor; the actuator for adjusting the operating parameters of the boiler is very common in the prior art. There are also many, and there is no further limitation here; the automatic control system first processes and judges the temperature data inside the slag layer in the burnout section collected by the temperature sensor, and then sends instructions to the actuator according to the results, and the actuator moves to adjust the boiler. operating parameters.

[0027] During the normal combustion of the mechanized layer-fired coal-fired boiler, when the slag temperature is 700°C to 720°C, th...

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Abstract

The invention relates to an intelligent automatic control method of a grate-firing coal burning boiler with energy-saving operation, comprising the following steps of: measuring the temperature of slag in a burn-out section of the boiler online in real time and regulating operation parameters of the boiler immediately according to corresponding monotone decreasing function relation of the slag temperature and carbon residue amount. The control method measures the physical parameters of the slag for adjusting the operating parameters of the boiler, can realize online automatic control measurement and adjustment of operation of the boiler, and can adjust the operation parameters of the boiler in time and accurately and stabilize the operation heat efficiency of the boiler.

Description

technical field [0001] The invention belongs to the technical field of energy saving, and in particular relates to an intelligent automatic control method for energy-saving operation of a bed-fired coal-fired boiler. Background technique [0002] Coal-fired boiler equipment is widely used in production and life in all walks of life. Generally, the calorific value is 30 steam tons / hour (21MW), which is called industrial boiler. Coal-fired industrial boilers have provided steam power, hot water heating and other thermal energy for my country's industrial and civil utilities for a long time. According to incomplete statistics from the Industrial Boiler Industry Association, the number of industrial boilers in my country is increasing by 20,000 to 30,000 steam tons every year. The large consumption terminal of raw coal production in my country is the coal-fired industrial boilers that are widely used in various industries. According to incomplete statistics, the current annual c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/04F23N5/00
Inventor 王曦宁谭仁玺
Owner NANJING RENTAIFAEN ELECTRIC