Powder oil shale dry distillation system device and application method thereof

Abstract

The invention relates to a powder oil shale dry distillation system device and an application method thereof, belonging to the field of oil shale development. In the method, the oil shale is pulverized until the particle size is less than 1mm, and is subjected to dry distillation in a dry distillation system. The low-grade oil shale is treated by an oil shale / inferior fuel co-dry distillation process; and as for the high-sulfur-content oil shale, limestone is added to perform desulfurization. A flue gas waste heat boiler is adopted at the high-temperature flue gas section; a powder waste heat boiler is adopted at the solid high-temperature section; and the generated steam can be used for heat supply or power generation. A cold oil spraying+indirect cooling process is adopted in the shale oil recovery system to reduce the quantity of sewage; and the recovered wastewater can be recycled after being treated.

Description

technical field [0001] The invention belongs to the technical field of oil shale resource development, and in particular relates to a novel powdery oil shale carbonization device and its application method. Background technique [0002] The traditional oil shale carbonization technology is improved on the basis of the Fushun type carbonization technology. The furnace type is a vertical kiln, and the raw material must be 25-75mm block material. Therefore, the utilization rate of raw materials is about 70%, which is a waste of resources, while the recovery rate of shale oil is usually about 65%. At the same time, the production capacity of a single device is low, and the daily processing capacity of a single device is only 100t / d. The oil recovery system of this type of technology Generally, the direct water condensation method is adopted, the amount of waste water is large, and the sewage is difficult to treat. [0003] ATP oil shale carbonization technology is a new generat...

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Problems solved by technology

Therefore, the utilization rate of raw materials is about 70%, which is a waste of resources, while the recovery rate of shale oil is usually about 65%. At the same time, the production capacity of a single device is low, and the daily processing capacity of a single device is only 100t / d. The oil recovery system of this type of technology Generally, the direct water condensation method is adopted, the amount of waste water is large, and the sewage is difficult to treat.

[0003] ATP oil shale carbonization technology is a new generation of carbonization technology, which adopts sleeve type rotary kiln technology, but the industrialization process of this technology has not been smooth, and it is an immature technology that cannot achieve industrial production

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