Oil shale liquefaction method

Abstract

The invention discloses an oil shale liquefaction method, which belongs to the field of petrochemical industry. The method comprises the following steps: performing stirring, dissolving, gas replacing, heating reaction, cooling, gas collecting, washing and filtering, thus obtaining a liquid product and solids, vaporizing the liquid product in a constant-temperature rotating evaporator, removing a solvent ethanol to obtain oil shale, and finally drying the separated solid at a constant temperature to obtain residues. The oil shale liquefaction method has the advantages that oil shale is adopted as a raw material to prepare shale oil, so that relevant problems caused by increasing shortage of fossil energy and the utilization of the fossil energy can be alleviated; the oil shale resource is large in reserves, so that the mass development and application can be facilitated; and the drying pretreatment for the oil shale is not needed, so that the energy consumption and investment cost in the reaction process are reduced, the energy utilization rate is high, the reaction product is easy to separate, the industrialized application is facilitated, both produced gas and solid byproducts can be collected and reutilized, and energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention relates to an oil shale liquefaction method. Background technique [0002] With the rapid development of social economy and the improvement of people's living standards, human needs and dependence on fossil energy have become increasingly obvious. my country's energy resources are not rich, and the per capita energy resources are far less than the world's average level. In particular, the proven oil reserves are only the world's largest. 2.3% of the total, China has become the world's second largest oil consumer next to the United States, and its dependence on imported oil has exceeded 60%. The contradiction between oil supply and demand is an unavoidable problem in China's energy development. It not only hinders the country's economic development, but also threatens national security. Therefore, it is necessary to find a resource that can replace oil to solve this contradiction, and oil shale has become an ideal substitute. Oil shale, a...

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Problems solved by technology

[0004] At present, the liquefaction is mainly concentrated on biomass, but the oxygen content of biomass is relatively high, and the calorific value of bio-oil produced is relatively low, and oil shale liquefaction has not been reported at home and abroad. Therefore, the present invention discloses a Liquefaction method of oil shale in sub / supercritical ethanol

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