Temperature control system of fluidized bed gasifiers

摘要

The invention relates to the field of power system, and to improve the accuracy and speed regulating the temperature of the fluidized bed zone by determining the maximum adjustment temperature of the fluidized bed and the flow of coolant in this area. The system comprises a cylindrical inflator casing 1 with an internal diameter D and arranged inside the fluidized bed 2, a gas distribution grid 3, the thermoelectric thermometer 4 situated at a distance h from the gas distribution grid 3 is made 10d≥h≥15d, where d - maximum diameter of the particles of the class processed fuel. Furthermore, the system comprises a coolant supply nozzles 5 are arranged inside the gasifier 1 uniformly along its circumference at a distance 1 from each other selected from the condition: 1 / 3D≥1≥1 / 5D, the discharge pipe 6, the overflow ash unit 7 is located at the upper boundaries of the fluidized bed 2, a fan 8, amplifier 9, valve 10, manifold 11, on which are arranged lugs coolant 5, the hopper 12, the fuel feeder 13, the valve 10 is connected to pipe 14 to the collector 11. The fuel is fed from the hopper 12 a casing g azogeneratora internal diameter D, the fuel consumption is specified which feeder 13. The fan 8 blows air to the gasifier 1 at the gas distribution grid 4 3. The thermoelectric thermometer measures the temperature of the fluidized bed 2. The measured value is input to the signal amplifier 9, and its output is connected to valve 10 by which regulates the flow of coolant. Cooling liquid is fed to the fluidized bed 2 through the pipe 14 connecting the valve 10 with the manifold 11 and the nozzles mounted thereon coolant 3 5. Fig.