Thermal power plant boiler NOx emission control method under variable-load working conditions

A boiler control and thermal power plant technology, which is applied in the field of NOx emission control of thermal power plant boilers under variable load conditions, can solve the problems that NOx emission control is still in its infancy and the difficulty of predicting and controlling NOx emissions of boilers.

Active Publication Date: 2017-03-15
NORTHEAST DIANLI UNIVERSITY
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Problems solved by technology

[0002] Pollutants emitted by power plant boilers mainly include NOx and SO 2 At present, desulfurization technology has been widely used in power plants and has achieved good results, while the control of NOx emissions is still in its infancy
Since most of the parameter

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  • Thermal power plant boiler NOx emission control method under variable-load working conditions
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  • Thermal power plant boiler NOx emission control method under variable-load working conditions

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Embodiment Construction

[0048] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0049] Taking the power generation process of a thermal power plant as an example, the NOx emission control method of a thermal power plant boiler under variable load conditions of the present invention is implemented, and the data are shown in Table 1.

[0050] Table 1 data situation

[0051] predictive model input dimension output dimension Number of historical data samples number of forecast samples boiler load 9 1 1000 590 NOx emissions 16 1 1000 590

[0052] This embodiment provides a figure 1 The NOx emission control methods for thermal power plant boilers under variable load conditions include:

[0053] Step 1: Establish boiler load prediction model and NOx emission prediction model;

[0054] The input volume of the boiler load prediction model is the total fuel volume of the boiler, the main fee...

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Abstract

The invention provides a thermal power plant boiler NOx emission control method under variable-load working conditions. The method comprises the steps of (1) establishing a boiler load prediction model and an NOx emission prediction model; (2) solving the optimum control quantity of a thermal power plant boiler according to prediction results of the boiler load prediction model and the NOx emission prediction model in order to meet the requirement for boiler load and achieve an optimized target of minimizing NOx emissions; and (3) issuing the optimum control quantity of the thermal power plant boiler to the thermal power plant boiler so as to control operation of the thermal power plant boiler. In order to meet the requirements for low NOx emissions of a thermal power plant and control operation parameters reasonably, the control parameters of the minimum NOx emissions can be obtained while the thermal power plant boiler load is guaranteed, so that the power generation efficiency is improved, NOx emissions are reduced, and the production requirements are met.

Description

technical field [0001] The invention relates to the technical field of NOx emission control, in particular to a NOx emission control method for thermal power plant boilers under variable load conditions. Background technique [0002] Pollutants emitted by power plant boilers mainly include NOx and SO 2 At present, desulfurization technology has been widely used in power plants and achieved good results, while the control of NOx emissions is still in its infancy. Since most of the parameters in the boiler operation will affect the NOx emissions and there is a complex coupling relationship between the operating parameters of the thermal power plant boilers, it has brought great difficulties to the prediction and control of the NOx emissions of the boilers. [0003] Reasonable control of boiler operating parameters can ensure the best NOx emission under the premise of meeting the boiler load, effectively reduce the emission of boiler combustion pollutants, and improve boiler o...

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Application Information

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IPC IPC(8): F23N5/00
CPCF23N5/00F23N2900/05003F23N2223/42F23N2223/10F23N2223/44F23N2225/06F23N2225/08F23N2237/32
Inventor 唐振浩张海洋曹生现
Owner NORTHEAST DIANLI UNIVERSITY
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