A method of producing gasoline with a high octane number from residual oil

A technology for high-octane gasoline and residual oil, which is applied in the fields of hydrocarbon oil treatment products, petroleum industry, and hydrocarbon oil treatment. Reaction performance and other issues, to achieve the effect of promoting hydrogenation to remove impurities, inhibiting carbon deposition, and prolonging the operation cycle

Active Publication Date: 2015-05-06
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

The disadvantages of this process are: (1) For catalytic cracking, since catalytic cracking heavy oil contains a large amount of polycyclic aromatic hydrocarbons, the self-circulation in the catalytic cracking unit leads to low yield of light oil and large amount of coke, which reduces the processing capacity of RFCC unit and Economic benefits; (2) For residual oil hydrogenation units, residual oil hydrogenation is a diffusion-controlled reaction, high-viscosity residual oil will reduce the diffusion and reaction performance, and increase the tendency of catalyst coking and deactivation; but if a large amount of straight-run wax oil is used If it is used as diluent oil, it faces the problem of competing for raw materials with the hydrocracking unit that produces ethylene raw materials

Method used

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  • A method of producing gasoline with a high octane number from residual oil
  • A method of producing gasoline with a high octane number from residual oil

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Embodiment 1

[0050] The heated residual oil raw material A and FCC heavy diesel oil are mixed with hydrogen and then enter the residual oil hydrogenation reactor to react under the action of the residual oil hydrogenation catalyst. The test conditions of the residual oil hydrogenation unit are shown in Table 2. The reactant flow enters the high-pressure separator and is separated into a gas-phase flow and a liquid-phase flow, wherein the gas-phase flow is recycled after being purified and boosted. Gas, gasoline, hydrogenated diesel and hydrogenated residue were obtained by fractional distillation of the liquid phase stream at normal pressure. The properties of the products are shown in Table 2. The hydrogenated residual oil is used as the raw material of the MIP catalytic cracking unit, and the cracking reaction is carried out in the presence of the catalytic cracking catalyst, and the reaction products are separated to obtain dry gas, liquefied gas, gasoline, light diesel oil, heavy diesel...

Embodiment 2

[0053] Embodiment 2 adopts residual oil raw material B. Process flow is identical with embodiment 1. The cut point of FCC light diesel oil and FCC heavy diesel oil is 310°C. The test conditions of the residual oil hydrogenation unit are shown in Table 2. See Table 3 for the test conditions of the FCC unit, product distribution and properties of FCC gasoline.

[0054] It can be seen from Table 3 that the yields of catalytically cracked gasoline are 59.45% and 64.90%, and the octane numbers are 93.0 and 93.5, respectively, using residual oil raw materials A and B.

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Abstract

A method of producing gasoline with a high octane number from residual oil is provided. According to the method, catalytic cracking heavy diesel is doped into a residual oil hydrogenation raw material and subjected to hydrogenation processing together, thus reducing viscosity of the residual oil, improving intermiscibility of a residual oil system, promoting hydrogenation of the residual oil to remove impurities, and reducing coking of a residual oil hydrogenation catalyst. Hydrogenated diesel rich in mononuclear aromatics is obtained from the catalytic cracking heavy diesel rich in polycyclic aromatic hydrocarbons after the hydrogenation processing. The hydrogenated diesel is mixed with catalytic cracking light diesel rich in mononuclear aromatics, and then the mixture is circulated and returned to a catalytic cracking unit to obtain the gasoline with a high octane number and rich in mononuclear aromatics.

Description

technical field [0001] The invention belongs to a production method of high-octane gasoline. More specifically, it is a method of producing high-octane gasoline by combined processing of residual oil hydrogenation and catalytic cracking. Background technique [0002] Petroleum is a non-renewable energy source. my country's imported crude oil is showing a rapid growth trend. In recent years, the price of crude oil has been rising. Benefits are also of great significance to my country's energy security. [0003] The combination of residual oil hydrogenation and catalytic cracking technology is a residual oil deep processing technology that can deeply convert residual oil and achieve clean production. However, the traditional residual oil hydrogenation-catalytic cracking combination technology is a one-way combination, that is, the residual oil is used as a catalytic cracking raw material after hydrogenation, and the catalytic cracking heavy oil circulates itself in the cataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2300/202C10G2300/305C10G2400/02
Inventor 刘涛戴立顺施瑢牛传峰孙淑玲邵志才杨清河董凯
Owner CHINA PETROLEUM & CHEM CORP
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