Flue gas indirect heating oil shale retorting technology and thermal spreader
A technology of heat spreader and oil heating, which is used in indirect heating retorting, petroleum industry, special form retorting, etc. It can solve the problems of large and complex oil recovery system, inability to handle small particle oil shale, and large amount of gas at the outlet of retort furnace.
Inactive Publication Date: 2014-11-12
沈阳海源干馏设备技术开发有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to solve the problem that the current domestic oil shale uses heat carriers to directly contact the oil shale, resulting in a large amount of gas at the outlet of the retort furnace, a large and complicated oil recovery system, cumbersome operations, low oil recovery rate, high air permeability requirements of the device, and daily The processing capacity is small, the floor area is large, and the problem of small particle oil shale cannot be dealt with. A new oil shale carbonization process is provided. High efficiency and simple oil recovery system, small investment, easy operation
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[0038] Flue gas indirect heating dry distillation oil shale technological process of the present invention is as follows figure 1 As shown, it is characterized in that: the flue gas of the heat carrier flows horizontally in the soaking tube 7 of the heat spreader, and the oil shale moves vertically outside the soaking tube 7 of the heat spreader, and the flue gas and the oil shale are not directly Instead, heat is transferred to the oil shale through the tube sheet 6 of the heat spreader and the tube wall of the heat soak tube 7; the oil gas produced by the dry distillation of oil shale moves upward outside the heat soak tube 7 of the heat spreader, and passes through the dry distillation gas discharge pipe 2. Exhausted outside the furnace; the flue gas is not in direct contact with the oil shale, and is not mixed with the retort gas, and is discharged out of the furnace through the flue gas discharge pipe 4; It is 350°C to 450°C. In the figure: oil shale is continuously fed ...
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A flue gas indirect heating oil shale retorting technology is characterized in that flue gas indirectly heats oil shale as a heat carrier, a thermal spreader is arranged in a retorting furnace, the flue gas does not directly contact with the oil shale, the flue gas flows in the thermal spreader in the retorting process of the oil shale, a retorting gas flows outside the thermal spreader, and the flue gas is not mixed with the retorting gas; the temperature of the flow gas entering the thermal spreader is 650-750DEG C, and heat provided by the flue gas heats the oil shale to the temperature needed by the retorting of the oil shape of 500-550DEG C; and the oil shale is uniformly and completely retorted. The technology is mainly characterized by small amount of the gas at the outlet of the retorting furnace, is suitable for small-granule oil shale retorting oil refining, and is also suitable for the retorting of oil sand and coal.
Description
technical field [0001] The invention relates to a technique for dry distillation and oil refining of oil shale by indirect heating with flue gas and a heat equalizer capable of uniformly heating the oil shale. Background technique [0002] At present, there are three main processes for oil shale retorting and refining in China, Fushun process, Maoming process and Huadian process. All three processes use gas as the heat carrier of dry distillation. First, the heat carrier is heated to above 650°C, and then the heat carrier is used to directly heat the oil shale, and the oil shale is heated to 500°C-550°C to make the oil shale Dry distillation occurs. The method of direct heating is actually to mix the heat carrier above 650°C with the cold oil shale, and the oil shale absorbs the heat of the heat carrier and raises the temperature to 500°C-550°C for dry distillation. The gas heat carrier of the Fushun process is a mixture of flue gas and dry distillation gas. The method is...
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Login to View More IPC IPC(8): C10B53/06C10B47/18
Inventor 吴冠峰
Owner 沈阳海源干馏设备技术开发有限公司