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Method for liquefying liquid-solid medium barrier plasma coal under atmospheric normal pressure

A plasma and dielectric barrier technology, applied in the preparation of liquid hydrocarbon mixtures, petroleum industry, etc., can solve the problems of harsh reaction conditions and high cost, and achieve the effects of mild conditions, easy control and low energy consumption

Inactive Publication Date: 2007-11-21
SOUTHEAST UNIV
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Problems solved by technology

[0002] The traditional direct coal liquefaction method is to complete the hydrogenation liquefaction reaction of coal under high temperature and high pressure conditions. The reaction conditions are harsh and the cost is high.

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  • Method for liquefying liquid-solid medium barrier plasma coal under atmospheric normal pressure

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Embodiment Construction

[0017] Atmospheric atmospheric pressure liquid-solid dielectric barrier (DBD) plasma coal direct liquefaction method, the present invention selects the material of the dielectric barrier (DBD) plasma reactor to be quartz materials, because the dielectric constant of quartz glass is high, the expansion coefficient is low, High temperature resistance, chemical stability, and electrical insulation are relatively good. It is a good dielectric and has a stabilizing and enhancing effect on the electric field in the reactor. The reactor adopts a line-and-tube structure, and the reaction temperature for the reaction to produce coal liquefaction products is controlled at 150°C to 180°C. A strong local electric field can be formed near the electrode line; the formed non-uniform electric field is strong inside and weak outside, which effectively avoids the phenomenon of gas breakdown; it can discharge in the entire reactor, and the plasma is spread throughout the entire reactor. The quartz m...

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Abstract

A coal hydrogenation liquefying method is liquid-solid medium baffling plasma liquefying at atmosphere normal pressure. The process is carried out by adopting medium baffling discharge, adding liquid-solid mixture of coal grain and hydrogen-supplying solvent into quartz medium baffling plasma reactor, combining into liquid-solid reactive phase medium baffling discharge reactive system, inputting into high-voltage and frequency electric field with peak voltage 3000-20000 volt and impulse power-supply frequency 500-30000 HZ, forming into plasma thin layer on surface of coal grain solid, dehydrogenating for hydrogen-supplying solvent in liquid-solid reactive system to generate active hydrogen ion, colliding electron in plasma thin-layer coal grain solid surface to form into free-base fragments and combining with hydrogen ion to form into coal liquefied products. The coal-liquefied products consist of petroleum, asphalt olefin and pro-asphalt olefin.

Description

Technical field [0001] The invention relates to a method for realizing the hydroliquefaction of coal under the condition of atmospheric pressure under the action of a liquid-solid dielectric barrier (DBD) plasma, and belongs to the technical field of coal direct liquefaction methods. Background technique [0002] The traditional coal direct liquefaction method is to complete the hydroliquefaction reaction of coal under high temperature and high pressure conditions. The reaction conditions are harsh and the cost is high. Plasma is a high-energy state composed of electrons, ions, atoms, molecules, radical groups, etc. The unique chemical activity and high reactivity of plasma make it possible for many chemical reactions that are not easy or impossible to achieve with traditional methods. At present, at home and abroad Many research results of plasma coal treatment technology have been produced: Chakravartty of India’s Central Fuel Institute, Baumann of Germany, and Dr. Xie Kechang ...

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Application Information

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IPC IPC(8): C10G1/06
Inventor 顾璠王东方王秋颖
Owner SOUTHEAST UNIV
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