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“boiler gas”- related faq

  • How to calculate the gas consumption in a boiler? 2019-07-19
    The boiler gas consumption calculation need the following parameters: gas calorific value and boiler thermal efficiency. Theoretically, the gas consumption of boiler = boiler thermal capacity ÷ (calorific value of gas x boiler thermal efficiency ) Take the 1 tph steam boiler as an example: = 600,000 cal / (8500Kcal * 0.98) =72m3/h, the 1 tph boiler's gas consumption per hour is about 72 cubic meters.
  • What's the difference between WNS series gas-fired (oil-fired) boilers and SZS series gas-fired (oil-fired) boilers? 2019-02-12
    1. In terms of boiler body structure, WNS series gas-fired (oil-fired) boilers are fire tube boilers; SZS series gas-fired (oil-fired) boilers are water tube boilers; 2. In terms of boiler working pressure, if the boiler pressure is below 1.6Mpa, the choice is usually the WNS series gas-fired (oil-fired) boiler, if the boiler pressure is above 1.6Mpa, the SZS series gas-fired (oil-fired) boiler may be a better solution.  Some high-pressure boilers also adopted SZS series gas-fired (oil-fir...
  • What are the causes of water attack in the economizer and condenser of a gas-fired boiler? 2018-11-23
    The air in the economizer and condenser has not drained yet when firing. The safety valves of economizer and condenser need to be turned on to exhaust steam. Return pipe valves also need to be turned on, enabling the steam in the economizer and condenser to return to softened water tank. The outlet water temperature is so high that economizer and condenser will have vaporization phenomenon. The outlet water temperature of economizer and condenser need to be controlled. The check valve of the...
  • What is difference between thermal oil heaters and steam boilers? 2018-08-30
    1. They are all a heat conversion device. The heat transfer medium they use is different. The water used in the steam boiler is heated to become steam. The heat transfer medium of thermal oil heater is heat medium oil. The heat is transferred to the heated substance by the heat medium oil.2. When a higher heating temperature is required, such as 280 degrees, the steam pressure of the steam boiler should reach 7MPa or more, and the process piping and heat exchange equipment must also withstand the same pressure. The equipment cost is high and dangerous. Thermal oil heater provides a temperature above 280 degrees, but the pressure is lower than 1MPa.3. The temperature of thermal oil heater can be accurately controlled within 3 degrees and the temperature of the steam changes greatly.4. Thermal oil heater is used alone, the exhaust gas temperature is higher, and the thermal efficiency is lower than that of the steam boiler. However, if used in conjunction with a steam boiler, the
  • What is the reason that the temperature difference between the inlet oil and the outlet oil in thermal oil heater exceeds the given value? 2018-07-12
    (Question details) Specific performance:The temperature difference between the inlet oil and the outlet oil temperature of the boiler exceeds the given value.Answer:Cause of failure:(1) The oil supply of the heat oil circulating pump is insufficient.(2) The boiler operates overload.(3) Thermal oil metamorphism.(4) The boiler does not match the heating equipment.(5) Bad insulation effect.(6) There is gas or steam in the thermal oil. Troubleshooting:(1) Remove the faults of oil pump and pipeline.(2) Operate at normal load.(3) Change new oil.(4) Choose proper boiler.(5) Check the insulation layer and repair the loopholes.(6) Remove air or steam. ZOZEN pays much attention to boiler furnace insulation also, the inside is made of high quality insulation material, external use of stainless steel plate, which can maximumly reduce heat loss and improve the operating environment.
  • There is hammer sound, vibration and unstable pressure during the operation of thermal oil heater. 2018-07-12
    (Question details) Specific performance:There is hammer sound in the oil inlet pipe, and the pointer of the inlet and outlet pressure gauge fluctuates.Answers: Cause of failure:The system contains gas and moisture.Troubleshooting:(1) Exhaust air.(2) Cook oil.
  • What causes the fan bearing to vibrate during boiler operation? 2018-07-12
    Question details (Performance):1. High temperature of motor, fast temperature rise.2. Overload, high outlet pressure and frequent safety valve open often.3. The vibration is intensified, the side vibration of the fan motor coupling is large, and the fan body never vibrates to vibration.4. No obvious vibration was found in no-load test of fan motor. Answer:  Fault reason:Fan bearing vibration is common fault in the operation, the vibration of the fan will cause damage of bearing and blade, bolt looseness, chassis and wind damage, fan vibration rises abruptly in the operation. this is because when the gas enter impeller and the rotating blade working face has certain angle, according to the principle of fluid mechanics, gas from non-working face must be a spiral blade, so the dust particles in the gas will slowly sedimentation due to vortex. Airfoil blades are very easy to accumulate dust. When the accumulated ash reaches a certain weight, a part of the large amount of accumulated ash wi
  • What is the reason for pump in the gas-fired boiler does not transfer oil? 2018-07-12
    Question details (performance):A pump in a gas boiler does not transfer oil. Answer: Fault reason:(1) Pump failure.(2) Oil pressure and power are reduced.(3) The oil inlet valve is not sealed.(4) The inlet pipe is not sealed.(5) The interceptor valve is closed.(6) The filter is contaminated.(7) The filter is not sealed.(8) The tubing is not sealed.(9) Pump suck air inlet.(10) The vacuum degree in oil tube is too high.Troubleshooting:(1) Replace with new pump.(2) Remove the inlet valve and clean or replace it.(3) Seal the inlet pipe.(4) Open.(5) Cleaning.(6) Replace the sealing ring.(7) Tighten and exhaust.(8) Clean the filter and valve.
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