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Hydroprocessing method for producing high quality solvent oil

A technology for hydrotreating and solvent oil, which is applied in the fields of hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc. It can solve the problems such as the difficulty in producing food-grade solvent oil products, and achieve the omission of high-pressure gas stripping facilities and reduce equipment costs , the effect of prolonging the service life

Active Publication Date: 2014-03-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the production of solvent oil using the above-mentioned process requires the processing of raw materials, and it is difficult to produce food-grade solvent oil products with zero aromatics content

Method used

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  • Hydroprocessing method for producing high quality solvent oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The raw material oil A is first fully mixed with hydrogen, enters the first reaction zone, and at a relatively high reaction temperature, it contacts with the non-noble metal hydrogenation catalyst I (Cat-A) to carry out deep hydrodesulfurization reaction, denitrogenation reaction and partial aromatics Saturation reaction; the reaction product enters the second reaction zone, and under the action of non-noble metal hydrotreating catalyst II (Cat-A) and noble metal hydrotreating catalyst (Cat-B), it is countercurrently contacted with hydrogen to continue deep aromatics saturation For the reaction, the loading volume ratio of the non-noble metal hydrotreating catalyst II and the noble metal hydrotreating catalyst is 1:7. At the same time, the second reactor has the effect of a stripping tower, which can remove hydrogen sulfide and ammonia in the raw material. After the reaction product at the top of the second reaction zone is cooled and separated, the hydrogen-rich gas ob...

Embodiment 2

[0040] The raw material oil A is first fully mixed with hydrogen, enters the first reaction zone, and contacts with the non-precious metal hydrotreating catalyst I (Cat-A) at a relatively high reaction temperature to carry out deep hydrodesulfurization reaction, denitrogenation reaction and partial aromatics saturation Reaction; the reaction product enters the second reaction zone, under the action of non-precious metal hydrotreating catalyst II (Cat-A) and noble metal hydrotreating catalyst (Cat-B), it is in countercurrent contact with hydrogen to continue the deep aromatic saturation reaction , the loading volume ratio of non-precious metal hydrotreating catalyst II and noble metal hydrotreating catalyst is 1:5. At the same time, the second reactor has the effect of a stripping tower, which can remove hydrogen sulfide and ammonia in the raw material. The reaction product at the top of the second reaction zone is cooled, and the hydrogen-rich gas obtained is recycled hydrogen...

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Abstract

The invention relates to a hydroprocessing method for producing high quality solvent oil. The method comprises the steps of carrying out reaction by contacting a mixture of a kerosene fraction or light diesel oil fraction raw material and hydrogen in a first reaction area with a non-noble metal hydroprocessing catalyst I; feeding the effluent in the first reaction area into a second reaction area, and contacting with hydrogen in countercurrent; sequentially carrying out aryl removing reaction in the presence of a non-noble metal hydroprocessing catalyst II and a noble metal hydroprocessing refining catalyst, wherein the reaction temperature of the second reaction area is 50-200 DEG C lower than that of the first reaction area. By using the method provided by the invention, high sulfur kerosene or light diesel oil fractions can be processed to produce a high quality solvent product with the sulfur content less than 0.5mu g / g and the aromatic hydrocarbon content less than 100mu g / g.

Description

technical field [0001] The invention belongs to a method for refining hydrocarbon oil in the presence of hydrogen, in particular to a hydrogenation method for producing food-grade solvent oil with extremely low aromatic content. Background technique [0002] In the deep processing process of oil refining industry, kerosene fraction has a very wide application prospect. Refined kerosene fractions can be used to produce kerosene, jet fuel, and various solvent oil products. Among them, solvent oils, especially food-grade solvent oil products, have better prices and outlets, and are the main economic growth points in the post-processing of kerosene fractions. When producing solvent oil from kerosene raw materials, straight-run kerosene can be further refined according to the needs of the market to reduce the aromatics content of the product below a certain requirement; then cut into narrow fraction products to be used as aerosol solvents, ink solvents, Cosmetic adjustments and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/02
Inventor 王哲高晓冬丁石卫剑黄卫国
Owner CHINA PETROLEUM & CHEM CORP
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