Precise control method of boiler biomass fuel
A technology of biomass fuel and control method, which is applied in the direction of combustion method, combustion control, and regulation of fuel supply, etc., and can solve the problems that the combustion control system of biomass fuel diversity thermal power plants cannot be applied, etc.
Inactive Publication Date: 2015-08-19
武汉丰盈能源技术工程有限公司
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[0007] The technical problem to be solved by the present invention is to provide a precise control method for boiler biomass fuel suitable for biomass power generation in view of the diversity of biomass fuels and the inapplicability of existing thermal power plant combustion control systems
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[0026] Attached below Figure 2-4 And the specific embodiment will further illustrate the present invention:
[0027] Refer to attached figure 2 The boiler biomass fuel control DSC system used in the boiler biomass fuel precise control method of the present invention mainly includes a front-end batching module, a middle-end detection module and a DCS system rear-end adjustment control unit; the front-end batching module determines the fuel according to the weight ratio when feeding. Composition and fuel volume, the mid-end detection module performs on-line weight detection and online moisture content detection on the fuel to enter the furnace respectively; the back-end DCS system adjusts according to the actual fuel weight and water content obtained through detection, referring to the equivalent relative heat of each fuel The value adjusts the weight of each fuel in the fuel control system.
[0028] Front-end fuel counterweight: when feeding, the front-end batching module w...
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The invention relates to an accurate control method of boiler biomass fuel. The accurate control method of the boiler biomass fuel uses a boiler biomass fuel control system to regulate and control the quantity of the biomass fuel. The boiler biomass fuel control system mainly comprises a front end material dosing module, a middle end detecting module and a rear end data conditioning system (DCS). In a material feeding process, each material taking machine takes materials according to instructions and feedbacks actual fuel quantity measured to the front end material dosing module, and then revises material taking speeds and material taking quantity according to an actual valve and a calculated value to achieve a set fuel ratio. Before the fuel enters a combustion chamber, the middle end detecting module respectively detects fuel weight and fuel moisture content, calculates a fuel value and an actual fuel quantity according to the detected results of the fuel weight and the fuel moisture content, and controls rotating speed of material feeding machines according to the calculated results so as to control the fuel quantity. The accurate control method of the boiler biomass fuel can achieve automatic accurate control of the DCS of fuel combustion of a biomass power plant, and achieve economic benefits of the biomass power plant and the aim of improving personal safety.
Description
technical field [0001] The invention belongs to the technical field of biomass fuel power generation, and in particular relates to a boiler control method of a biomass power plant. Background technique [0002] As the country vigorously promotes new energy, biomass fuel power generation technology will play an important role in the national new energy development strategy because of its energy saving and environmental protection. Although the distributed control system (DCS for short) has been maturely used in the thermal power generation industry, the DCS fuel control of coal-fired units and circulating fluidized bed (burning low-quality coal and coal gangue) units are very mature and reliable; while biomass fuel power generation The DCS of the fuel in the plant has not been successful. The reason is that the diversity of the biomass fuel caused by factors such as seasons, time, and regions, and the change of the moisture content of the fuel caused by weather and human fact...
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IPC IPC(8): F23N1/00
Inventor 谢先锋郑韬张莉杜俊王晓军
Owner 武汉丰盈能源技术工程有限公司