Two-way combined process of wax-oil hydrogenation treatment and catalytic cracking

A catalytic cracking and wax oil hydrogenation technology, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment, can solve the problems of reducing coke yield and achieve the effect of increasing yield and reducing sulfur content

Active Publication Date: 2007-01-17
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

Therefore, this method is quite limited to reduce coke yield and improve product quality

Method used

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  • Two-way combined process of wax-oil hydrogenation treatment and catalytic cracking

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Embodiment

[0041] In this example, the two-way combined process of wax oil hydrotreating and catalytic cracking provided by the present invention is used to circulate catalytically cracked diesel oil and catalytically cracked heavy cycle oil to a hydrotreating unit for further processing. Tables 2, 3 and 5 are the process conditions, product distribution and main product properties respectively.

[0042] The comparison results show that after hydrotreating FCC diesel and FCC heavy cycle oil with straight-run vacuum gas oil, the two sets of equipment can increase gasoline (including hydrogenated naphtha) by 0.8 percentage points and increase the yield of diesel oil. 5.3 percentage points, gas decreased by 0.6 percentage points, liquefied petroleum gas decreased by 2.0 percentage points, and coke decreased by nearly 3 percentage points, which greatly improved the product distribution. value requirements, catalytic catalytic gasoline sulfur content is further reduced.

[0043] Den...

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Abstract

A two-way combined process of wax oil hydro-process and catalytic crack is carried out by entering wax oil, catalytic cracking re-circulating oil and catalytic cracking diesel oil into hydro-processor, hydrogenation reacting under existence of hydrogen and hydrogenation catalyst, separating for reactant to obtain gas, hydrogenation naphtha oil, hydrogenation diesel oil and hydrogenation tail oil, entering hydrogenation tail oil into catalytic cracker, crack reacting under existence of catalytic cracking agent, separating to obtain dry gas, liquefied gas, catalytic cracking gasoline, catalytic cracking diesel oil and catalytic cracking re-circulating oil and oil slurry, and circulating for catalytic cracking diesel oil and catalytic cracking re-circulating oil to hydro-processor. It has higher recovery rate and cetyl value, less sulfur content, arene content and coke output.

Description

technical field [0001] The invention belongs to a combined process for treating hydrocarbon oil with a hydrotreating process and another conversion step, more specifically, a method for organically combining the two processes of wax oil hydrotreating and catalytic cracking. Background technique [0002] At present, the world is facing the trend of crude oil becoming heavier and worse, while people's demand for heavy fuel oil is gradually decreasing, while the demand for light oil is greatly increasing. Therefore, how to use limited oil resources to produce light products in a large amount, the light weight of heavy oil is one of the key technologies. The main processes for lightening heavy oil include hydrocracking, catalytic cracking and coking. Among them, the application of hydrocracking is limited due to factors such as high investment, high operating costs and difficulty in processing vacuum residue; coking process is limited due to low liquid yi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/04
Inventor 熊震霖胡志海石玉林王子文刘学芬龙湘云
Owner CHINA PETROLEUM & CHEM CORP
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