Method and device for destructive distillation of oil shale

Abstract

The invention discloses a method and a device for destructive distillation of oil shale and belongs to the field of coal chemical industries. According to the method and the device for the destructive distillation of the oil shale, shale oil is produced with a technique of lifting pipe-fluidized bed composite destructive distillation, a charcoal burning device and a destructive distillation reactor are arranged side by side, high-temperature shale ash from the charcoal burning device and entering the bottom of a lifting pipe reactor and oil shale raw materials entering the lifting pipe reactor through a feed pipe move upward together along the lifting pipe reactor and mixed heat transmission and destructive distillation occur between the high-temperature shale ash and the oil shale raw materials, and then destructive distillation reaction is continued in the destructive distillation reactor after the high-temperature shale ash and the oil shale raw materials enter the destructive distillation reactor. The method and the device for the destructive distillation of the oil shale has the advantages that oil extraction rate is high, destructive distillation temperature is stable, a pipe type charcoal burning device-charcoal burning device composite is strong in charcoal burning capacity and the amount of burnt charcoal is large, temperature of the charcoal burning device can be controlled easily, carbocoal can be burnt completely, and heat utilization efficiency is high. The device for the destructive distillation of the oil shale is continuous and stable in operation, and flexible in adjustment.

Description

technical field [0001] The invention belongs to the field of oil shale processing, and in particular relates to a dry distillation method and device for oil shale. Background technique [0002] In recent years, with the increasing scarcity of crude oil resources in the world and the advent of the era of high oil prices, countries around the world are actively looking for alternative oil resources. Using oil shale to produce shale oil through dry distillation technology has become an important supplementary plan. Oil shale, also known as kerogen shale, is a sedimentary rock containing about 15% to 50% organic matter. The organic matter of oil shale is usually composed of two substances: one is asphaltene; the other is high molecular polymer, called kerogen. It is generally believed that kerogen is a mixture of macromolecular polymers with a three-dimensional structure. The carbon in kerogen mainly exists in aliphatic and naphthenic structures, and also has some aromatic str...

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a carbonization method and device for oil shale, which can solve the problem that the existing semi-coke generated in the oil shale carbonization device is completely burned into charcoal. Large ash emission, high dust emission, large device structure size and high energy consumption, low oil production rate of oil shale dry distillation, technical difficulties in environmental management and shale ash transportation, etc.

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