Waste incineration power generation boiler and flue gas pipe network asymmetric characteristic dynamic control method thereof

A technology for power generation boilers and waste incineration, which is applied to the control technology of external air intake of waste incineration power generation boilers, the selection of control systems, control equipment and instruments, and the control of excess air coefficients, which can solve the dynamic control method of asymmetric characteristics. Issues such as publications, documents or materials that have not been published publicly

Pending Publication Date: 2021-03-26
BEIJING KDHY SCI & TECH DEV LTD
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Problems solved by technology

[0006] There are no published publications, documents or materials on the dynamic control method of the

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  • Waste incineration power generation boiler and flue gas pipe network asymmetric characteristic dynamic control method thereof
  • Waste incineration power generation boiler and flue gas pipe network asymmetric characteristic dynamic control method thereof
  • Waste incineration power generation boiler and flue gas pipe network asymmetric characteristic dynamic control method thereof

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Embodiment Construction

[0012] Basic terms and definitions: The excess air coefficient in the waste incineration power generation boiler system is also called the excess air coefficient or air excess coefficient, which is defined as "the ratio of the actual air demand to the theoretical air demand during fuel combustion", and is represented by the letter α.

[0013] According to the definition, the excess air coefficient refers to the result obtained by the waste incineration power generation boiler combustion system at the set air-fuel ratio, that is, the combustion effect of combustion-supporting air and fuel under the condition of the air-fuel ratio. The combustion effect does not include the effect of combustion caused by the external air intake of the waste incineration boiler. Although the external air intake of the waste incineration boiler may produce partial or complete combustion, compared with the combustion system based on the air-fuel ratio, due to The external air intake of the waste inc...

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Abstract

The invention discloses a waste incineration power generation boiler and a flue gas pipe network asymmetric characteristic dynamic control method thereof, belongs to a waste incineration power generation boiler control technology, and relates to a dynamic control method of an external air inlet amount calculation mathematical model, an air excess coefficient calculation mathematical model, an external air inlet amount and an air excess coefficient of the waste incineration power generation boiler. The external air inlet amount of the waste incineration power generation boiler is calculated through the argon content detected through flue gas analysis, and then the opening degree of an inlet valve of an induced draft fan is adjusted according to the difference between a set value and a calculated value of the external air inlet amount, so that the external air inlet amount is always controlled within a set value range. The secondary fan air volume and the primary fan air volume are adjusted according to the oxygen content and the carbon monoxide content which are analyzed and detected through the flue gas, so that the air excess coefficient is always controlled within a set value range. The multiple energy-saving and emission-reducing effects of improving the heat efficiency of the boiler, reducing NOx and VOC pollution emission and achieving full-automatic control are achieved.

Description

technical field [0001] The invention belongs to the control technology of waste incineration power generation boilers, in particular to the external air intake control technology and excess air coefficient control technology of waste incineration power generation boilers; the invention does not involve the selection of control systems, control equipment and instruments. Background technique [0002] Waste incineration power generation is currently a promising resource comprehensive utilization project. On the one hand, it can improve the diversification of my country's energy supply structure, and on the other hand, it provides a new sustainable development model for regional pollutant control and ecological environment quality maintenance. [0003] Compared with traditional power plant boilers, because the types, quantities and qualities of raw materials in waste incineration power generation systems vary greatly, the combustion conditions in waste incinerators are complex a...

Claims

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Application Information

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IPC IPC(8): F23G5/50
CPCF23G5/50Y02E20/12
Inventor 高毅夫高劼
Owner BEIJING KDHY SCI & TECH DEV LTD
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