Using air preheater for heat recovery, but the big question is when using sulfur fuel prone to low temperature corrosion of materials. To some extent, in order to control the corrosion, should according to the sulfur content in fuel, the metal temperature of low temperature setting small limit. Waste heat boiler for heat recovery, the use of heat transfer oil fire grate of flue gas waste heat from heat to heat water or produce steam. Waste heat boiler usually does not change the fuel consumption of hot oil furnace itself. Produced by waste heat boiler to produce hot water or steam and heating can be used in the production, and can also be indirect save fuel.
Reduced the excess air ratio, by reducing the excess air ratio in the process of heat transfer oil furnace design, can improve the thermal efficiency of the furnace. We often use increase the convection section of FGS hotspots methods to improve the furnace thermal efficiency. We recommend this method. Flue gas outlet temperature of air preheater has limit, so you can know that achieve high thermal efficiency.
Calculation of heat transfer oil boiler thermal efficiency formula: the total thermal efficiency of boiler = (plus heat + 36 * power) / 29.3 * standard coal consumption. (estimation) in order to improve the thermal efficiency of heat transfer oil boiler, must burn combustion products more thoroughly as possible, so that the heat loss is less. If it can be hard to achieve this goal, can improve the thermal efficiency of heat conduction oil, thereby saving the cost, so as to achieve the goal of energy conservation and environmental protection.