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Method of treating raw material for producing acerate coke

A needle coke and pretreatment technology, which is applied in the treatment of hydrocarbon oil, hydrotreating process, petroleum industry, etc., can solve the problems of loss of aromatics, high severity of hydrogenation, and ineffective use of hydrogen, and achieve saving The effect of investment

Active Publication Date: 2006-12-06
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0009] The main problem in the above-mentioned prior art is that the non-ideal components such as asphaltenes and colloids in the raw oil are not removed but participate in the hydrogenation process, the hydrogen is not effectively utilized, and because the severity of the hydrogenation is relatively High, resulting in the loss of aromatics, the ideal component in the feed oil

Method used

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  • Method of treating raw material for producing acerate coke

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Embodiment Construction

[0015] Method provided by the invention is implemented like this:

[0016] The raw material oil is firstly removed by filtration and vacuum distillation to remove heavy non-ideal components such as asphaltene, colloid and part of ash, and light non-ideal components such as diesel fraction, wherein the light non-ideal components are removed from the top of the vacuum tower The heavy non-ideal components are extracted from the bottom of the tower, and the remaining ideal components are extracted from the tower to contact with hydrogen and hydrogenation catalysts, and the hydrogenation reactants are separated to obtain the raw materials for producing needle coke.

[0017] The feed oil of the present invention is selected from one or more of heavy distillate oil, catalytic cracking oil slurry or clarified oil, steam cracking residue, and thermal cracking residue, wherein the heavy distillate is a wax oil fraction with a distillation range of 270 ~500°C. The sulfur content of the ...

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Abstract

This invention discloses a method for pretreating the oil raw material for producing needle-like coke. The method comprises: (1) distilling the oil raw material to remove the unideal components; (2) contacting the ideal components with hydrogen and the hydrogenating catalyst, and separating the hydrogenated products to obtain the raw material for producing needle-like coke. The method can remove the unideal components from the oil raw material by combination of the two techniques, thus can rationally utilize hydrogen, save the cost, and largely reserve the ideal components.

Description

technical field [0001] The invention belongs to a multi-step process method for distilling hydrocarbon oil and refining hydrocarbon oil with hydrogen, more specifically, it is a raw material pretreatment method for producing needle coke. technical background [0002] Needle coke has the advantages of low coefficient of thermal expansion (CTE), high degree of crystallization, and high electrical conductivity. The pores in the coke block are uniformly oriented and elongated and elliptical. Needle coke can be used as an important raw material for the production of ultra-high-power and high-power graphite electrodes, and has a wide range of uses in industry, national defense, medical and aerospace fields. At present, the output of needle coke (raw coke) in my country is about 15,000 tons, which cannot meet the demand, and about 45,000 tons of needle coke (cooked coke) still needs to be imported. Although it is a product of the delayed coking process, comp...

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Application Information

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IPC IPC(8): C10G67/00
Inventor 施昌智刘劲松李家栋
Owner CHINA PETROLEUM & CHEM CORP
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