锅炉档(Boiler stall).docVIP

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锅炉档(Boiler stall) The first chapter: 1. The capacity of the main parameters of boiler boiler (evaporation boiler refers to steam quantity produced per hour) steam parameters (pressure and temperature at the outlet of the boiler feed water temperature () to the flood economizer entrance temperature) 2, the working principle of boiler: the main role is to fuel combustion the heat in the furnace, the heating surface is not worth the transfer water to produce steam. Boiler equipment mainly includes: fuel combustion, heat transfer, water heating, evaporation, overheating and so on. The second chapter: 1, moisture, ash, volatile effect: reducing the calorific value of coal; reduce the combustion temperature, is not conducive to the ignition and combustion of combustion; increasing flue gas volume, smoke temperature, boiler efficiency decreased; increasing the boiler heating surface of low temperature corrosion and fouling; increase the ventilation power consumption. The third chapter: 1. What are the heat loss of boiler? Analysis of reasons and influencing factors. Answer: heat loss are: 1, fuel unburned or unburned carbon caused by the heat loss, the influence factors: fuel properties, combustion, furnace type and structure, burner design and layout, furnace temperature, boiler load, operation level; 2, because unburned combustible gas is exothermic gas with flue gas discharge into the atmosphere caused by incomplete combustion heat loss factors of fuel volatilization, the excess air coefficient, the burner structure and layout, furnace temperature and intracranial aerodynamic conditions. 3 because the enthalpy of exhaust gas is higher than that of boiler entering into boiler, the coefficient of excess heat and the coefficient of air leakage are caused by the exhaust heat loss factor of two. 4, as the boiler wall, drum, flue gas pipes and other temperatures higher than the atmospheric temperature, the loss of heat factors for the external surface temperature, surface are

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