Research Of Biomass Direct Combustion Boiler Operation And Control

In recent years, the world' s energy, electricity supply and demand tightening, coal, petroleum, natural gas, as represented by conventional energy production will eventually be wiped out, while large-scale use of these fossil fuels will lead to a series of serious environmental pollution. Therefore, the domestic power generation industry is rich in resources, renewable, and is conducive to improving the environment and sustainable development of biomass development and utilization of resources given a great deal of concern, and biomass power generation industry came into being.Biomass power generation technology have broad prospects for development, but China's direct-fired biomass boiler development, whether the design or operation, are there are still many problems, can learn from the experience of its virtually non-existent. In order to achieve stable and reliable operation of the control and adjustment to ensure that direct-fired biomass boiler economic, safe, efficient operation, based on country papers GAOTANG biological plant 30MW 130t / h boiler unit vibration grate the actual operation, from biomass direct-fired boiler control system and operation of the adjustment carried out more thoroughly.Paper first direct-fired biomass boiler combustion process, characteristics and water-cooled vibrating grate increase of wind to the spot of the burning material on the way to analyze the combustion process and produce emissions of the chemical reaction of corrosion; given country GAOTANG bio boiler plant to the main design parameters and soft drinks, cigarettes wind, fuel systems and other technology systems flow chart, its overall structure and layout are summarized.Papers of direct-fired biomass boiler sequence control system, boiler MFT, purge the furnace to carry out a simple exposition of some of the boiler is given value and signal protection purposes; simulation of the boiler control system are discussed in detail on the boiler feed water control systems, air traffic control system, furnace pressure control systems, fuel control systems, low pressure air preheater circulation loop control system, high pressure air preheater loop control cycle of the main loop systems studied are given every a control system control tasks and control programs, and field instrumentation for the selection; then, a concrete realization of DCS system, the system hardware, software and networks on which other direct-fired biomass boilers reference design has some significance.In this paper, based on the actual operation of the boiler, the boiler to start the process of analysis and the method and parameters to start curve; and combustion under low-load adjustment and adjusted combustion control aspects of the analysis, put forward a practical method of adjustment, at the same time, analysis of the factors that affect the combustion adjustment, which is direct-fired biomass boiler to provide a good guidance and reference.