4 mw gas fired hot water boiler for hotel

4 mw gas fired hot water boiler for hotel

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The reason you must know the problems of energy consumption boiler (boiler exhaust gas temperature) produce exhaust gas temperature of the boiler problem (1) shift the center position on the furnace flame, the exhaust gas temperature rises a multi-burner into the upper interlayer with the wind unreasonable . b upper stoker coal excessive. c burner tilt position shifted, resulting in the shift of the center position of the flame. d burner auxiliary throttle opening degree command deviations, lack of oxygen, pulverized coal combustion delayed. e a high-pressure fan outlet, wind speed is too large, the pulverized coal combustion furnace into the shift position. f leakage boiler, the furnace excess air factor export. g coal is too thick, ignition and slow combustion reaction. h low volatile coal, high ash, high moisture, ignition difficulties, to delay the combustion. i mill outlet temperature is low, the air entering the furnace temperature was lowered powder mixture, combustion delay. (2) When the boiler "four leak" for plugging, resulting in a superheater, reheater or economizer to reduce heat transfer area. (3) the supply air temperature is high. (4) high flue gas dew point temperature. (5) soot blowing equipment investment is not normal. (6) heating surface coking, fouling. (7) The air preheater ash fouling, heat transfer efficiency is lowered. (8) strict quality control, internal heating surface junction. (9) low water temperature.

Tail secondary combustion flue how to deal with the phenomenon of a sharp increase in rear of the boiler flue secondary combustion flue temperature location and later. 2, the furnace, the flue abrupt change in negative pressure, flue gas is not tight at the smoke, the Mars. 3, air preheater large current swing bearing housing temperature, severe Jam occurs. 4, air preheater fire alarm issue. 5, steam temperature, economizer outlet water temperature, the air temperature rises abnormally. 6, induced draft fan vanes automatically open a large, Fan current rise. 7, as the combustion side, both sides of the smoke temperature difference increases. Reason 1, through the coarse fine grinding coal, coal poor uniformity, improper adjustment of combustion, combustion of fuel is insufficient, serious mechanical incomplete combustion, and high levels of combustible ash accumulated in the back pass. 2, an oil burner or an oil poor atomization, so that unburned droplets deposited in the flue. 3, prolonged low load operation of boiler, the furnace temperature is too low or too small amount of excess air resulting in incomplete combustion of coal or oil accumulated in the tail. 4, after the shutdown of the fuel leakage into the furnace and accumulates or after shutdown and to insufficient MFT furnace purge unburnt coal or oil accumulation at the end of the tail. 5, soot blower failure, long-term put into operation is not normal. 1 process, when a slight secondary combustion, exhaust gas temperature does not rise within 20 ℃ normal smoking temperature should be checked immediately paragraphs, the combustion site and judge whether the secondary steam soot blowing. (When the exhaust gas temperature rises to 250 ℃) 2, the operation of the back pass and then generating boiler combustion boiler operation should be stopped immediately, immediately stop sending, ID fan and turn off all the smoke and steam soot blowing air damper fire. 3, if the economizer afterburning, until the storage tank level control valve blocking off without pressure, flow rate of feed pump motor start 150t / h Sheung be cooled. 4, air preheater heating surface of the secondary combustion air preheater normal operation, normal operation of the air pre-heater holder; air preheater Jam occurs, the main drive motor and the auxiliary drive motor trip, contact maintenance manual plate moving continuous air preheater rotor. Soot blowing steam into air preheater for extinguishing, into the air preheater for fire extinguishing can not be extinguished. 5, the economizer outlet water temperature close to the inlet temperature (at the economizer secondary combustion), the air preheater inlet gas temperature, exhaust gas temperature, the hot air temperature is lowered to less 80 ℃, each one hole, and the hole is no longer Mars smoke and soot blowing steam stops coming out after water or fire. Open hole inspection manhole and inspection to confirm the secondary combustion goes out, after the flue vent door open to drain water inside the smoke flue opening for ventilation air damper. 6, to be re-combustion is resolved, the flue temperature does not rise and fall when stabilized, before slow regulation of the air, smoke baffle, the necessary air cooling and purging.

How to use gas-fired boiler gas boiler includes a gas water boiler, gas 4 mw fired hot water boiler for hotel, gas steam boilers, gas hot water boiler which is also known as gas heating boilers and gas boilers bath, as the name suggests refers to the gas boiler fuel gas boiler, gas boiler and oil-fired boiler, electric boiler comparison economy, so most people have opted for a steam boiler equipment gas-fired boiler, heating, bath with. 1, boiler water, softening the first, but also to clean the water quality can not be an impurity. 2, gas boiler before the fire, you want to view the valve pipes, steam pipes, water gauge, pressure gauge and drain valve and so on, whether it is intact, whether the normal use. 3 and can not be conditioned to avoid rendering problems. If the gauge to reach the promised 80% working pressure, to avoid excessive pressure. 4, the water table in a glass tube, which should consolidate outer shield, but also to clean and tidy. How should the functioning of the water table at any time of the investigation, if any anomalies should be handled immediately. 5, when the gas boiler shutdown urgency, you want to cancel burning, then closed throttle, then open the door and release valve, the order can not be inverted. 6, when the pressure rises quickly, when and beyond promised to work pressure or boiler annex presents the phenomenon of failure, or a furnace, ducts appear deformed, when leaking air leakage, urgency should be shutdown immediately.

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