Method and device for fluid-bed destructive distillation of oil shale

Abstract

The invention discloses a method and a device for fluid-bed destructive distillation of oil shale. The method and the device for the fluid-bed destructive distillation of the oil shale solve the problems caused by high coal burning load borne by a coal burning device in an existing destructive distillation technique and also solve the problem of low extraction rate of shale oil. The method for the fluid-bed destructive distillation of the oil shale comprises the steps that a section of destructive distillation reaction is carried out on oil shale raw materials (27) and high-temperature heat carriers after the oil shale raw materials (27) and the high-temperature heat carriers are mixed in a lifting pipe destructive distillation reactor (24); the oil shale raw materials enter a bed type destructive distillation reactor (21) for a second section of destructive distillation reaction after the first section destructive distillation reaction is carried out on the oil shale raw materials, and then mixed carbocoal is formed and enters a pipe type coal burning device (14) after oil gas contained in the mixed carbocoal is extracted in a steaming mode; and a section of coal burning is carried out on the mixed carbocoal which enters the pipe type coal burning device; and the mixed carbocoal enters a bed type coal burning device (5) for a second section of coal burning after the first section coal burning is carried out on the mixed carbocoal. The invention discloses the device for the fluid-bed destructive distillation of the oil shale, wherein the device for the fluid-bed destructive distillation of the oil shale is used for realizing the method for the fluid-bed destructive distillation of the oil shale. The method and the device for the fluid-bed destructive distillation of the oil shale are mainly used for destructive distillation processing of various kinds of powder oil shale raw materials.

Description

technical field [0001] The invention belongs to the technical field of oil shale dry distillation, and relates to a fluidized bed dry distillation method and device for oil shale. Background technique [0002] With the increasing scarcity of oil resources and the advent of the era of high oil prices, the use of oil shale dry distillation technology to produce shale oil in countries around the world has become an important plan to replace and supplement oil resources. Oil shale, also known as kerogen shale, is a sedimentary rock containing organic matter. Organic matter in oil shale is usually composed of two substances: one is asphaltene, and the other is high molecular polymer (called kerogen). Inorganic substances in oil shale mainly include quartz, kaolin, clay, mica, carbonate rock and pyrite. After oil shale is heated and dry-distilled, shale oil, dry distillation gas and shale semi-coke are produced. Shale oil can be directly used as fuel oil, and can also be furthe...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fluidized bed dry distillation method and device for oil shale, to solve the problem of using a charcoal burner for charcoal burning in the existing oil shale fluidized bed dry distillation technology. The burden of charcoal burning is high, the temperature of charcoal burning is difficult to control, and the charcoal burner is easily damaged by overheating. There is also the problem of low shale oil yield due to the use of a fluidized bed dry distillation reactor for dry distillation reaction

Images