A catalytic conversion method for producing high-octane gasoline from petroleum hydrocarbons

A technology of high-octane gasoline and catalytic conversion method, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrotreating process, etc., can solve the problems of high hydrogen consumption and impact on conversion, and achieve optimal operating conditions, reduce hydrogen consumption, Optimizing Effects for Harsh Conditions

Active Publication Date: 2016-05-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this method, not only the hydrogen consumption is high, but also the reaction of the hydrogenated cycle oil in the upstream zone will seriously affect the conversion of the downstream heavy oil

Method used

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  • A catalytic conversion method for producing high-octane gasoline from petroleum hydrocarbons
  • A catalytic conversion method for producing high-octane gasoline from petroleum hydrocarbons
  • A catalytic conversion method for producing high-octane gasoline from petroleum hydrocarbons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0042] This embodiment illustrates adopting the present invention figure 1 method provided in . The distillation range cut-off temperature of the light cycle oil fractionation tower is 250°C.

[0043] The heavy fraction of light cycle oil enters the medium-sized hydrotreating unit, and the test conditions of hydrotreating are: hydrogen partial pressure 8.0MPa; average bed reaction temperature 360°C, volume space velocity 0.5 hours -1 , hydrogen oil volume ratio 1100Nm 3 / m 3 . The dicyclic aromatics content in the hydrogenated heavy fraction was 8.0% by weight.

[0044] The main operating parameters of the catalytic cracking unit are shown in Table 3. The light fraction enters from the lower nozzle of the auxiliary riser, while the hydrogenated heavy fraction enters from the upper nozzle of the auxiliary riser. The distance between the upper and lower nozzles controls the residence time of the reaction oil and gas within the distance between the two nozzles to 0.2 seconds...

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Abstract

A catalytic conversion method utilizing petroleum hydrocarbon to produce high-octane gasoline comprises the following steps: light catalytic cycle oil is cut to obtain light fractions and heavy fractions, the heavy fractions are subjected to hydrotreatment to obtain hydrogenized heavy fractions, the light fractions and the hydrogenized heavy fractions separately enter an auxiliary riser reactor of a catalytic cracking unit, heavy petroleum hydrocarbons enter a main riser reactor of the catalytic cracking unit, cracking reaction is realized in the presence of a catalytic cracking catalyst, and the resultant is separated to obtain products including gasolene and light cycle oil. According to the invention, the light fractions of light cycle oil and the hydrogenized heavy fractions enter the auxiliary riser reactor layer by layer, so that severe conditions required for catalytic cracking reaction of different fractions of light cycle oil can be optimized and satisfied to the utmost extent, and accordingly, high-octane catalytic gasoline can be produced to the maximum extent.

Description

technical field [0001] The invention belongs to the catalytic conversion method of petroleum hydrocarbons in the absence of hydrogen, more specifically, a catalytic conversion method for producing high-octane gasoline from heavy petroleum hydrocarbons. Background technique [0002] With the development of heavy crude oil and the rapid growth of market demand for light oil products, in my country, catalytic cracking technology, which is used to lighten heavy oil, has developed rapidly. However, a fact that must be faced is that the quality of catalytic cracking diesel oil (or "light cycle oil") has always been relatively poor, with high density, high aromatic content, and low cetane number. It is also difficult to meet increasingly stringent diesel specifications. How to solve the catalytic cracking light cycle oil is an increasingly serious problem. Another problem that exists at the same time is the long-term shortage of domestic finished gasoline, and catalytic cracking ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00
CPCC10G69/00
Inventor 龚剑洪龙军
Owner CHINA PETROLEUM & CHEM CORP
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