Hybrid and intelligent updating method for boiler efficiency combustion optimization model

A boiler efficiency and boiler combustion technology, which is applied in the control of combustion, lighting and heating equipment, etc., can solve problems such as degeneration, difficulty, and the problem of boiler combustion optimization not being well solved.

Active Publication Date: 2017-04-26
吉林同鑫热力集团股份有限公司
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Problems solved by technology

The collocation of operating parameters such as air distribution and coal supply of the boiler has a direct impact on the combustion state of the boiler. Different configurations of operating parameters such as air distribution, coal supply and oxygen amount will directly lead to different boiler efficiencies.
For a given boiler, under certain load conditions, there is an optimal operating parameter configuration scheme for the combustion efficiency, which can optimize the combustion efficiency. However, there is a very complicated coupling relationship between the operating parameters of the boiler. Finding the optimal configuration of operating parameters is not easy
Especially for boiler efficiency, some data needed for calculation cannot be obtained online in real time, which makes it very difficult to optimize boiler efficiency online in real time
With the continuous advancement of science and technology, the degree of automation of boiler operation has been continuously improved, but the problem of boiler combustion optimization has not been well resolved.
However, boiler combustion is sometimes denatured, and sometimes changes in coal quality parameters will also increase model prediction errors, resulting in inaccurate predictions and optimization failures

Method used

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  • Hybrid and intelligent updating method for boiler efficiency combustion optimization model
  • Hybrid and intelligent updating method for boiler efficiency combustion optimization model
  • Hybrid and intelligent updating method for boiler efficiency combustion optimization model

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Embodiment Construction

[0040] A hybrid intelligent boiler efficiency combustion optimization model updating method, specifically the following steps:

[0041] (1) Based on boiler combustion professional knowledge and experimental research, construct standard indicators that are positively correlated with boiler combustion efficiency where ΔT=T 1 -T 2 ,T 1 It is the characterizing temperature of the furnace, which can be measured by a non-contact temperature measuring instrument, such as an infrared non-contact temperature measuring instrument, or obtained by a boiler combustion DCS system, T 2 It is the characteristic temperature of the tail flue, which can be taken as the temperature after the air preheater or the temperature after the economizer, which can be obtained from the DCS system of the boiler combustion or directly measured; k* is the design coal type of the power plant boiler to produce flue gas per ton of coal combustion Coefficient, which is related to coal quality and can be calcu...

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Abstract

The invention provides a hybrid and intelligent updating method for a boiler efficiency combustion optimization model. At present, online real-time optimization of the boiler efficiency is always a difficult problem for industrial research personnel, because the change of coal types and the time-varying characteristics of the combustion law can cause the model prediction errors to be increased, and then boiler combustion optimization can be caused to lose effect. According to the hybrid and intelligent updating method for the boiler efficiency combustion optimization model, an updating method capable of judging whether the model needs to be updated or not and correcting the re-modeled model in the updating process is specifically constructed, the model can be updated effectively and timely, and therefore the prediction precision of the model is improved; and both online optimization and offline optimization can be carried out.

Description

technical field [0001] The invention belongs to the field of information and control technology, relates to automation technology, and in particular relates to a hybrid intelligent boiler efficiency combustion optimization method. Background technique [0002] Boiler combustion optimization is an important technical means for energy saving and emission reduction. Its goal is to obtain a high-efficiency operating state by adjusting operating parameters such as boiler air distribution and coal supply under certain boiler load conditions. The collocation of operating parameters such as air distribution and coal supply of the boiler has a direct impact on the combustion state of the boiler. Different configurations of operating parameters such as air distribution, coal supply and oxygen amount will directly lead to different boiler efficiencies. For a given boiler, under certain load conditions, there is an optimal operating parameter configuration scheme for the combustion effi...

Claims

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Application Information

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IPC IPC(8): F23N5/00
CPCF23N5/00F23N2223/10F23N2223/44
Inventor 王春林梁少华魏光建李时雨凌忠钱
Owner 吉林同鑫热力集团股份有限公司
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