A method for producing aromatic-rich gasoline
A technology for aromatics gasoline and aromatics content, which is applied in the treatment of hydrocarbon oil, petroleum industry, hydrocarbon oil treatment products, etc. It can solve the problems of difficulty in meeting diesel specifications, high added value of products, and shortage of raw materials for aromatics production, so as to reduce competition. Adsorption and Effect of competition reaction and improvement of yield
Active Publication Date: 2021-08-06
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
However, the quality standards of vehicle fuel oil in my country are constantly improving. The national V diesel quality standard implemented nationwide in January 2017 requires that the polycyclic aromatic hydrocarbons content in vehicle diesel oil should not exceed 11%, so that even if FCC light cycle oil is hydrorefined or Difficult to meet increasingly stringent diesel specifications after hydro-upgrading
On the other hand, aromatics, especially light aromatics including benzene, toluene, xylene and ethylbenzene, are important petrochemical raw materials with high added value, but there is a long-term shortage of raw materials for domestic aromatics production
Method used
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Embodiment
[0063] This example illustrates the use of the method provided by the present invention.
[0064] The catalytically cracked light cycle oil enters the hydrotreating reactor for hydrotreating. The hydrotreating conditions are: hydrogen partial pressure 8.0 MPa, average bed reaction temperature 350°C, volume space velocity 1.0 hour -1 , the volume ratio of hydrogen to oil is 800 standard cubic meters per cubic meter, and the hydrogenated light cycle oil with an initial boiling point of 155°C is obtained by separating the reaction oil and gas.
[0065] Hydrogenated light cycle oil is cut by distillation range to obtain hydrogenated light distillate, hydrogenated middle distillate and hydrogenated heavy distillate. Among them, the cut point temperature between the hydrogenated light distillate and the hydrogenated middle distillate is 205°C, the cut point temperature between the hydrogenated middle distillate and the hydrogenated heavy distillate is 270°C, and the hydrogenated mid...
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The invention relates to a method for producing gasoline rich in aromatics, the method comprising: (1), contacting catalytic cracking light cycle oil with a hydrotreating catalyst and performing hydrogenation treatment to obtain hydrogenated light cycle oil; (2), The obtained hydrogenated light cycle oil is cut to obtain the hydrogenated light fraction, the hydrogenated middle fraction and the hydrogenated heavy fraction; (3), the obtained hydrogenated light fraction, the hydrogenated middle fraction and the hydrogenated heavy fraction are respectively obtained from the following The lower nozzles, middle nozzles and upper nozzles arranged in sequence from the top are sent to the riser reactor to contact with the catalytic cracking catalyst from the bottom of the riser reactor, and the catalytic cracking reaction is carried out from bottom to top to obtain reaction products and unused catalyst. The method of the present invention enables the production of gasoline rich in aromatics.
Description
technical field [0001] The present invention relates to a method for producing aromatic-rich gasoline. Background technique [0002] With the adjustment of my country's economic structure, the ratio of diesel consumption to gasoline in the market has decreased year by year, and it will become normal for the growth rate of diesel consumption to be lower than that of gasoline consumption. Catalytic cracking diesel oil (also known as "light cycle oil") is an important by-product of catalytic cracking units. It is rich in aromatics, especially polycyclic aromatic hydrocarbons, and belongs to low-quality diesel fractions. However, the quality standards of vehicle fuel oil in my country are constantly improving. The national V diesel quality standard implemented nationwide in January 2017 requires that the polycyclic aromatic hydrocarbons content in vehicle diesel oil should not exceed 11%, so that even if FCC light cycle oil is hydrorefined or It is also difficult to meet increas...
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IPC IPC(8): C10G69/04
CPCC10G69/04C10G2300/1037C10G2300/70C10G2400/02
Inventor 袁起民龚剑洪唐津莲毛安国
Owner CHINA PETROLEUM & CHEM CORP