The size of the boiler appears to be simple, but a boiler is not just one cylinder, there are smoke tube fire tube, there are many irregular places. If the drawings can be decomposed calculation, calculate the volume of a fixed pattern for the boiler of an entity.Fortunately, you actually want to calculate the size of the boiler, but only requires the calculation of surface area, like calculated. Your boiler is only a small vertical boiler. The boiler is mainly a diameter. With a ruler to measure the circumference of the cylinder-shaped, divided by the circumference of 3.14 is the diameter of the In fact, have perimeter insulation surface area even out. The circulating fluidized bed boiler is a new rise in the international arena in recent decades, a furnace, and its combustion technology is a major innovation in the old boilers, generally there are two Refeeder two external cyclone Refeeder and two furnace within inertia Refeeder in, 'fuel to constitute a circulation loop between the furnace and Refeeder people furnace after the new fuel, involved in burning tons of fluidized state. And furnace process, such as caused by the turbine steam temperature a sharp decline or the occurrence of the impact of the steam pipe water should be immediately stopped and the furnace, weakened burning strengthen hydrophobic. And to be back to normal again after the furnace. And furnace check again control the drum water level gauge, pressure gauge, instructions, and observe the meter indication changes, and start the meter reading. Combustion air into the secondary air from different locations were fed into the fluidized bed combustor. Less oxygen combustion to form a reducing atmosphere, greatly reducing the type of thermal NOx formation in the dense-phase region; segmented air control fuel NOx formation is one of the main advantages of circulating fluidized bed boiler o based on coal different from 50% to 70% of the primary air flow is generally the total amount of wind, accounted for 20% to 40% of secondary air and, broadcast coal wind and about 15% back to the expected wind. Maintain normal bed temperature is the key to stable operation of the fluidized bed boiler. At home and abroad to develop and generate a circulating fluidized bed boilers, fluidized bed temperature mostly in the 800 ~ 950. Burning anthracite bed temperature can be controlled within 950 to 1050 C range. Fluidized bed boiler furnace, fuel types, the different nature of the load range and rate of change of the same.Circulating fluidized bed boiler, the load can be 30% to 110% range of change, l load speed is generally per minute from 5% to 7%, down load speed per minute from 10% to 15%, making co-cycling unit and The heating load changes in the larger boiler. Economic operation of the boiler secondary air the rational use of the rational use of secondary air relationship, secondary air is too small to make the furnace dilute particle combustion incomplete, arrive Refeeder re-combustion to heat up the temperature of the Refeeder ; too much secondary air will make the excess air ratio increases, the heat losses increase boiler efficiency. Rational arrangement of the secondary air is quite significant, secondary throttle around should be based on the combustion of different changes. Need emergency boiler cooling is allowed to close the main steam valve 4 ~ 6h, start the induced draft fan and forced ventilation, and to increase the number of other tasks, Sheung Shui. Boiler shutdown should be rules of order to take the maintenance of measures to prevent corrosion of the heating surface.