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Boiler pulverized coal combustion heat quantity control system and method

A technology of pulverized coal combustion and heat control, which is applied in the direction of combustion methods, control of combustion, and adjustment of fuel supply, etc., and can solve problems such as combustion heat that has not yet been seen

Active Publication Date: 2013-10-30
邸生才 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In the current technology, there is no control device that can accurately control the combustion heat of the coal fired into the boiler

Method used

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  • Boiler pulverized coal combustion heat quantity control system and method
  • Boiler pulverized coal combustion heat quantity control system and method
  • Boiler pulverized coal combustion heat quantity control system and method

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Embodiment Construction

[0052] The technical solutions of the present invention will be described below with reference to the accompanying drawings.

[0053] The combustion calorific value of coal is related to the coal weight and the calorific value (burning value) of the coal. In order to accurately control the combustion heat of boiler coal, it is necessary to first confirm the parameters affecting the calorific value.

[0054] The calorific value of coal mainly depends on the moisture, ash and volatile matter of coal.

[0055]Moisture includes internal moisture, external moisture and total moisture (full moisture is the sum of internal and external moisture). Total moisture is commonly used M at In addition, there is an air-drying basis moisture M ad .

[0056] Ash content includes air dry basis ash A ad and received base ash A ar Wait.

[0057] Volatile matter, also known as volatile matter yield, refers to the product of thermal decomposition of organic matter and some minerals in coal, c...

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Abstract

The invention discloses a boiler pulverized coal combustion heat quantity control system and method. The boiler pulverized coal combustion heat quantity control system comprises a conveyor, a pulverized coal combustor, an ash content measurement device, a moisture measurement device, a volatile component measurement device, a weighting device and a data collection processing controller. The conveyor conveys pulverized coal to the pulverized coal combustor. The ash content measurement device is used for measureing ash content signals of pulverized coal conveyed by the conveyor. The moisture measurement device is used for measuring the moisture content of pulverized coal conveyed by the conveyor. The volatile component measurement device is used for measuring the volatile component value of pulverized coal conveyed by the conveyor. The weighing device is used for measuring the weight value of pulverized coal conveyed by the conveyor. The data collection processing controller is used for receiving the ash content signals, the moisture content, the volatile component value and the weight value obtained through measuring and calculating the combustion heat quantity according to the ash content signals, the moisture content, the volatile component value and the weight value; sending a control signal of adjusting the conveying amount of the conveyor according to the difference value of the combustion heat quantity and the target heat quantity. The boiler pulverized coal combustion heat quantity control system and method can accurately obtain the combustion heat quantity of pulverized coal and can accurately control the quantity of coal transported to the combustion boiler according to the target heat quantity.

Description

technical field [0001] The invention relates to boiler combustion heat measurement and control technology, in particular to a boiler coal (coal pulverized) combustion heat control system and method. Background technique [0002] Combustion boilers are widely used in electric power, metallurgy, cement, chemical and other industries. The following takes a power plant as an example to briefly explain the current situation of boiler pulverized coal combustion heat control. [0003] There are many control systems in the power plant, among which the steam pressure control system or the boiler combustion control system is based on the deviation of the steam pressure of the boiler or the steam load demand of the generator set to control the amount of coal combustion, air supply and induced air entering the boiler to ensure that the boiler Operational economy, stability and safety. [0004] Due to the large inertia of air pressure control, it is difficult to accurately measure the ...

Claims

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Application Information

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IPC IPC(8): F23N5/00F23N1/00
Inventor 邸生才
Owner 邸生才
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