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Hydrocracking method for producing high-octane petrol

A hydrocracking and hydrorefining technology, applied in hydrotreating process, petroleum industry, treatment of hydrocarbon oil, etc., can solve the problems of high investment and operating costs, influence of catalyst service life, harsh operating conditions, etc., and achieve equipment investment. And the effect of low operating cost, wide applicability of raw materials and good economy

Active Publication Date: 2010-06-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because single-stage hydrocracking is used to produce gasoline, harsh operating conditions are required, the yield of low-value gas is high, and the service life of the catalyst will also be affected
Although the two-stage hydrocracking technology using precious metal hydrocracking catalysts can effectively increase the octane number of gasoline products, the two-stage hydrocracking technology is equivalent to two sets of hydrogenation units, the process is long, and the investment and operating costs are high. The raw materials of the method are limited, and the heavy components of FCC diesel cannot be effectively processed

Method used

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  • Hydrocracking method for producing high-octane petrol
  • Hydrocracking method for producing high-octane petrol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 is an example of the feedstock once-through process, and the unconverted diesel fraction is not recycled. The conditions and results are shown in Table 1 below.

[0033] Table 1 raw material passes flow process embodiment and reference ratio once

[0034]

Example 1-1

Example 1-2

Reference example 1-1

Raw oil properties

Raw oil name

Inferior FCC

diesel fuel

Inferior FCC

diesel oil

Inferior FCC

diesel fuel

Density / kg·m -3

950.0

950.0

950.0

Distillation range / ℃

195～400

195～400

195～400

Sulfur content / wt%

0.79

0.79

0.79

Nitrogen content / μg·g -1

1109

1109

1109

Aromatic content / wt%

81.0

81.0

81.0

Hydrocracking process conditions

catalyst

FF-36 / FC-24

FF-36 / FC-24

FF-36 / FC-24

Pressure / MPa

8.0

8.0

8.0

temp...

Embodiment 2

[0041] Example 2 is an example of a partial circulation process, in which part of the unconverted diesel fraction is recycled back to the hydrocracking reactor. Conditions and results are shown in Table 2 below.

[0042] Table 2 Diesel Fraction Partial Circulation Process Embodiment

[0043] implementation plan

[0044] implementation plan

Embodiment 3

[0045] Example 3 is an example of the full circulation operation of the unconverted diesel fraction. The diesel fraction is fully recycled to the inlet of the hydrocracking reactor. The specific conditions and results are shown in Table 3 below.

[0046] Table 3 full cycle embodiment reaction conditions and product distribution

[0047] implementation plan

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PUM

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Abstract

The invention discloses a hydrocracking method for producing high-octane petrol, which comprises the following steps that: raw oil and hydrogen gas are mixed and then enter a first reactor for impurity removal reaction; and reaction effluent enters a second reactor for hydrocracking reaction which uses an appropriate catalyst and is performed under a certain content of nitrogen. Compared with the prior art, the method has the characteristics of machining poorer raw materials and having long running period of the catalyst, good quality of a hydrocracking product and the like. The method is mainly used for the hydrocracking technological process for producing the high-octane petrol by using diesel fractions with various high arene contents as raw materials.

Description

technical field [0001] The invention discloses a hydrocracking method, in particular to a hydrocracking method for producing high-octane gasoline by using high-aromatic diesel fractions as raw materials. The main product of hydrocracking is high-octane gasoline. The converted diesel fraction can be blended to produce clean diesel, or partially or fully recycled to produce high-octane gasoline. Background technique [0002] Since the beginning of the 21st century, with people's increasing awareness of environmental protection, stricter national environmental protection laws and regulations, and rapid development of the national economy, the demand for clean motor fuels has been increasing all over the world. [0003] Catalytic cracking (FCC) technology is one of the main technological means of lightening heavy oil, and it occupies a relatively important position in oil refining enterprises in all countries in the world. In China's heavy oil and light chemical processing unit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/02
Inventor 关明华曾榕辉石友良黄新露刘涛白振民
Owner CHINA PETROLEUM & CHEM CORP
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