Efficient internal thermal type oil extraction device for powder oil shale and extraction method thereof

Abstract

The invention relates to an efficient internal thermal type oil extraction device for powder oil shale and an extraction method thereof. The device consists of a gas uniform distributer, a dry distillation furnace, a whirlwind clamping sleeve, a water-cooling electrical tar precipitator, an oil storage tank, a burner and a metal beehive-type heat exchanger. A dry distillation section in the dry distillation furnace is provided with the gas uniform distributer, thereby realizing the direct heat exchange between powder materials and a gas heat carrier and greatly improving heat efficiency; a multi-layer uniform wind distribution technique is used to ensure the complete dry distillation of the oil shale; and no extra energy is supplied to the whole system, thereby achieving self-sufficiency of energy. In the novel efficient internal thermal type oil extraction process for the powder oil shale, an internal thermal method is adopted, namely, the oil shale is heated by directly by gas, and the oil shale is decomposed by heating so as to generate dry distillation oil gas; and then as the dry distillation oil gas is condensed and collect to obtain high-quality crude oil and gassy mashgas.The novel process has high heat efficiency, is stable and safe, simple and reliable, and the like; and by using the novel process, the production cost of the oil extraction of the powder oil shale isgreatly reduced, and oil yield is significantly improved, thereby improving the comprehensive utilization of the oil shale.

Description

technical field [0001] The invention relates to a new high-efficiency internal heating powder oil shale oil extraction process and device, which is characterized in that a unique structure is designed, which solves the problem of poor air permeability of gas in powder and realizes the combination of powder and gas The direct heat exchange of the heat carrier greatly improves the thermal efficiency; the multi-layer uniform air distribution technology is adopted to ensure the complete dry distillation of oil shale; the whole system does not need additional energy supply and realizes energy self-sufficiency. Background technique [0002] The world is rich in oil shale resources, and its reserves converted into shale oil are as high as more than 400 billion tons, which is far larger than the world's proven crude oil reserves of more than 170 billion tons, and is also larger than the world's crude oil resources of 300 billion tons. In the current era of high oil prices, the devel...

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Problems solved by technology

However, at the present stage, domestic powder oil shale oil extraction production has not yet formed a scale, and since powder oil shale is mostly heated by indirect heating, there are low heat transfer efficiency, low oil yield, and small processing capacity in actual production. Defects seriously restrict the development of oil shale oil extraction industry

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