Heat-storage tubular gas heating furnace
A heating furnace and heat storage technology, used in coke ovens, special forms of dry distillation, petroleum industry and other directions, can solve the problems of large heat exchange devices, easy coking of dry distillation furnaces, consumption of steel and other problems, which is conducive to large-scale industrial production, The effect of reducing the heat exchange area and reducing the cost
Inactive Publication Date: 2009-02-11
辽宁成大能源科技有限公司
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Problems solved by technology
The Fushun type regenerative heating furnace can only provide hot gas whose temperature fluctuates from 500°C to 700°C, so the vaporization and combustion reaction section can only be added to the retort furnace to make up for this deficiency, resulting in low oil recovery. Carbonization furnace is easy to coke and other problems, so that the full cycle process cannot be realized
The Brazilian tubular heating furnace can provide continuous, balanced and stable hot gas at about 700°C. However, in order to reduce the exhaust gas temperature, this kind of heating furnace has to increase the heat exchange area, which makes the heat exchange device part of the heating furnace extremely large and consumes A large number of steel materials increase the cost of the furnace
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[0007] The attached drawing shows the structure of the regenerative tubular heating furnace. When the gas is burned in the furnace, heat is radiated to the radiant tube laid in the furnace, and the generated flue gas exchanges heat with the circulating gas flowing in the tube bundle, and the circulating gas is heated to 700°C and sent to the dry distillation furnace. The flue gas passes through the regenerator located on the side of the furnace, exchanges the waste heat to the regenerator ball, and drops to 150°C and is discharged out of the furnace. The combustion-supporting air enters from the bottom of the regenerator, and is preheated to about 1000°C by the stored heat carrier and enters the furnace. It is switched by the reversing valve every 3 minutes.
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Abstract
The invention provides a device which carries out secondary heating of circular methane in the dry distillation process of oil shale and is characterized in that mixed heat exchanging ways of heat accumulation, radicalization and convection are adopted to heat the circular methane from 500 DEG C to 700 DEG C, and the smoke exhausting temperature is less than 150 DEG C. The device can supply the hot methane with the temperature of 700 DEG C to a dry distilling furnace continuously, uniformly and stably. The device has small volume, low manufacturing cost and high heat efficiency which is higher than 90%; the temperature of the heated methane can be adjusted according to the requirement. The intermittent operation of the Fushun retort furnace accumulation heating furnace and no continuous heat supply thereof are changed.
Description
Technical field [0001] The invention is a device for reheating circulating gas in an oil shale dry distillation process. It is characterized by adopting a mixed heat exchange method of heat storage, radiation and convection to heat the circulating gas from 500°C to 700°C, and the exhaust gas temperature is lower than 150°C. The device can continuously, evenly and stably supply hot gas at about 700°C to the dry distillation furnace to ensure the stable operation of the dry distillation furnace. Background technique [0002] In the oil shale dry distillation process, it is necessary to supply hot gas at about 700°C to the dry distillation furnace, and it should be continuous, balanced, and stable, otherwise the dry distillation process cannot be performed normally. Fushun type regenerative heating furnace can only provide hot gas whose temperature fluctuates from 500°C to 700°C. Therefore, only a vaporization combustion reaction section can be added to the retort furnace to make up...
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IPC IPC(8): C10B53/06
Inventor 吴启成张卫军王鸿治邢科
Owner 辽宁成大能源科技有限公司