Prediction system of circulating fluidized bed household garbage burning boiler furnace outlet flue gas oxygen content and method thereof
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A technology for domestic waste incineration and flue gas oxygen content, which is applied in the field of energy engineering and can solve problems such as high computing loads
Active Publication Date: 2017-08-04
ZHEJIANG UNIV
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At the same time, the flue gas oxygen content prediction system has a relatively high computing load. Therefore, in order
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Embodiment 1
[0088] refer to figure 1 , figure 2 , image 3 , a system for predicting the oxygen content of flue gas at the furnace outlet of a circulating fluidized bed domestic waste incineration boiler provided by the present invention, comprising a circulating fluidized bed domestic waste incineration boiler, a distributed control system for operating control of the boiler, and a data communication interface , database and host computer. The database reads data from the distributed control system through the data communication interface, and is used for training, learning and testing of the upper computer. The upper computer performs data exchange with the distributed control system through the data communication interface. The upper computer includes online learning, online update, Validation part and online prediction part. Specifically include:
[0089] Signal acquisition module. This module is used to collect the operating condition parameters and operating variables of the C...
Embodiment 2
[0143] refer to figure 1 , figure 2 , image 3 , a method for predicting the oxygen content of flue gas at the furnace outlet of a circulating fluidized bed domestic waste incineration boiler provided by the present invention, the method comprises the following steps:
[0144] 1) Analyze the operating mechanism of the circulating fluidized bed domestic waste incineration boiler and the change mechanism of the oxygen content of the flue gas, and select the waste feed rate, coal feed rate, primary air volume, secondary air volume, bed temperature, and furnace dilute-phase zone temperature and furnace negative pressure as the input variables of flue gas oxygen content prediction model.
[0145] Domestic municipal solid waste is mostly collected in a mixed manner, resulting in complex components of waste entering factories and furnaces. Generally, it mainly includes main components such as kitchen waste, paper, plastic, rubber, fabric, wood, bamboo and inorganic substances, sho...
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Abstract
The invention discloses a real-time prediction system of a circulating fluidized bed household garbage burning boiler furnace outlet flue gas oxygen content and a method thereof. An integration modeling method of a support vector machine algorithm and a multi-population genetic particle swarm optimization algorithm is used. A rapid, economic and adaptive updating system and a method are constructed so as to predict a boiler furnace outlet flue gas oxygen content in real time, and tedious and complex mechanism modeling work is avoided. A nonlinear dynamical characteristic of a SVM algorithm, a generalization capability and a real-time prediction capability are used to represent a dynamical change characteristic of a flue gas oxygen content. A particle swarm optimization algorithm is used to optimize a SVM algorithm punishment parameter C and a nuclear parameter g so as to increase a generalization capability of a model. A genetic operator and a multi-population migration mechanism are introduced so as to accelerate a convergence speed of a particle swarm algorithm, increase a diversity of a particle swarm optimization algorithm solution, reduce a possibility for particle swarm algorithm optimization calculation to get into local optimum and increase a global search capability and a local search capability of the algorithm.
Description
technical field [0001] The invention relates to the field of energy engineering, in particular to a system and method for predicting the oxygen content discharge of flue gas at the furnace outlet of a circulating fluidized bed domestic waste incineration boiler. Background technique [0002] Since waste incineration can well realize volume reduction, volume reduction, harmlessness and resource utilization of waste treatment technology, in the past ten years, under the guidance of relevant national industrial policies, the domestic waste incineration industry has achieved vigorous development. Since the 1990s, a number of domestic scientific research institutions have conducted a large number of in-depth studies on the combustion mechanism of municipal solid waste (MSW) in China, and have mastered the combustion characteristics of mixed collection, high moisture, and complex MSW. Based on my country's experience in the development of coal, coal gangue and other inferior fuel c...
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