Microwave pyrolysis device for oil shale

Abstract

The present application discloses a microwave pyrolysis device for oil shale. The device comprises a resonant cavity for accommodating microwaves, a reaction container at least partially extending into the resonant cavity, an air inlet portion connected to the reaction container and an oil-gas collection part connected to the reaction container; the reaction container is used for placing the oil shale; the air inlet part is used to input an inert gas into the reaction container; and the oil-gas collection part is used to collect oil gas generated after pyrolysis of the oil shale. The microwavepyrolysis device for the oil shale can effectively utilize the oil shale, improve the yield of shale oil after pyrolysis, the yield and heat value of shale pyrolysis gas, and realize desulfurization,denitrification and deoxidation of the shale oil.

Description

technical field [0001] The present application relates to the technical field of oil shale pyrolysis, in particular to a microwave pyrolysis oil shale device. Background technique [0002] Oil shale has huge reserves and is feasible for development and utilization, and is an important supplementary energy source for oil. Oil shale is a kind of sedimentary rock with an inorganic mineral skeleton and solid organic matter. The organic matter is mainly kerogen and a small amount of asphaltene. Oil shale is a kind of solid fossil fuel. In the case of isolating the air, the oil shale is heated to 450-600°C (that is, low-temperature dry distillation), and its kerogen is pyrolyzed to generate shale oil, shale pyrolysis gas, Semi-coke and a small amount of pyrolysis water. Among them, shale oil can be directly used as liquid fuel for marine turbines, or used to produce gasoline, kerosene, diesel and paraffin products through rectification process, and shale pyrolysis gas can be use...

AI Technical Summary

Problems solved by technology

This external heating method has slow speed, low efficiency, uneven heating of oil shale, and high energy consumption, which increases production costs for enterprises, and has neither economic advantages nor environmental protection concepts;

[0005] (2) Shale oil yield is not high

However, the downstream processing technology of shale oil is more complex than that of oil processing, the reaction conditions are harsh, the efficiency of hydrodenitrogenation is low, nitrogen-containing compounds inhibit hydrodesulfurization / oxygenation, catalysts are easy to deactivate, and equipment is easy to corrode, etc.;

[0007] (4) Shale pyrolysis gas generated by pyrolysis has low yield and low calorific value, and shale pyrolysis gas with low calorific value cannot be used as coal gas and chemical gas, but can only be used as fuel gas, which is not conducive to the development of oil shale Comprehensive utilization

[0008] In summary, the existing oil shale pyrolysis technology has problems such as low comprehensive utilization efficiency of oil shale and pollution to the environment.

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