Medium and low temperature coal tar deep processing method

A technology for deep processing of low-temperature coal tar, which is applied in the petroleum industry, hydroprocessing process, and hydrocarbon oil treatment. It can solve problems that affect the thermal stability of oil products, cannot be removed in large quantities, and engine damage, so as to improve the use of oil. The effect of improving the life, improving the properties of oil products, and prolonging the service life
CN101538482AInactive Publication Date: 2009-09-23胜帮科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
胜帮科技股份有限公司
Publication Date
2009-09-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a medium and low temperature coal tar deep processing method. Medium and low temperature coke material is pretreated and fractionated to obtain light fraction, carbolic oil and heavy fraction, dephenolization treatment is carried out on the carbolic oil to obtain phenols product and dephenolized oil, the dephenolized oil and the above heavy fraction carry out pyrogenetic reaction jointly to obtain various carbonized products, wherein carbonized naphtha, at least one of carbonized diesel oil and carbonized wax oil is mixed with the light fraction obtained by material fractionation to carry out hydrofining and hydrocracking reaction, hydrogenated naphtha obtained by hydrocracking carries out catalytic reforming-aromatics extraction to obtain benzene, toluol, xylene, solvent oil and other products. Compared with the prior art, gasoline fraction and diesel oil fraction obtained by the inventive method are clean and stable in properties. In addition, the invention can produce a plurality of chemical products with high added value, truly realizes the effective utilization of medium and low temperature coal tar, and greatly improves the service life of devices.
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Description

technical field

[0001] The invention relates to a coal chemical process, in particular to a medium-low temperature coal tar deep processing process. Background technique

[0002] Coal dry distillation and coal gasification are important components of the coal chemical process, and the raw materials are mostly non-caking coal or weakly caking coal. Non-caking coal or weakly caking coal includes lignite, long-flame coal, gas coal, etc. Lignite is a non-caking or weakly caking coal, and it is the coal with the lowest degree of coalification. Lignite is characterized by high moisture, low specific gravity, high volatile content, non-bonding, strong chemical reactivity, poor thermal stability, low calorific value, and contains varying amounts of humic acid. It is mostly used as fuel and raw material for gasification, and can also be used to extract montan wax, humic acid, and manufacture sulfonated coal or activated carbon. Long-flame coal also has a high volatile content, has...

Claims

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