A kind of catalytic cracking method of prolific gasoline

A catalytic cracking and gasoline technology, applied in the field of catalytic cracking, can solve the problem of limited increase in gasoline yield, and achieve the effects of reducing the amount of catalytic diesel oil, reducing thermal reactions, and improving gasoline yield

Active Publication Date: 2018-04-20
SINOPEC LUOYANG PETROCHEM ENG CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen from the analysis that the above process methods mainly increase the gasoline yield by increasing the ratio of agent to oil. Although the increase of gasoline yield can be realized to a certain extent, the increase in gasoline yield is very limited.

Method used

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  • A kind of catalytic cracking method of prolific gasoline
  • A kind of catalytic cracking method of prolific gasoline
  • A kind of catalytic cracking method of prolific gasoline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 (comparative example)

[0028] The test was carried out on a conventional single riser catalytic cracking test device. The feed of the riser was mixed heavy oil, the main properties were listed in Table 1, and the treatment capacity was 30 kg / day; the catalyst used in the test was DFC-1 industrial balancer, and the balance catalyst micro The reactivity was 65, and the carbon content was 0.03w%. The main operating conditions, product distribution and main properties of gasoline are shown in Table 2.

Embodiment 2

[0030] The test was carried out on a double riser catalytic cracking test device. The first riser feed was mixed heavy oil in Example 1, and the treatment capacity was 30 kg / day; the second riser feed was the light fraction of all catalytic diesel produced by the device. The throughput is 15 kg / day. The catalyst used in the test is DFC-1 industrial balance agent, the micro-reaction activity of the balance catalyst is 65, and the carbon content is 0.03w%. The main operating conditions, product distribution and main properties of gasoline of the double riser catalytic cracking test unit are listed in Table 2.

Embodiment 3

[0032]According to Example 2, the difference is that the reaction temperature of the second riser is 510° C. The main operating conditions, product distribution and main properties of gasoline are listed in Table 2.

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PUM

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Abstract

The invention discloses a catalytic cracking method for producing gasoline. The steps are: the feedstock oil enters the lower part of the first riser reactor to contact and react with the catalyst from the pre-lift mixer, the raw catalyst in the first riser reactor enters the stripping section of the main settler for stripping, and then enters the regenerator for regeneration. Catalyzed diesel or hydrotreated catalytic diesel enters the lower part of the second riser reactor to contact and react with the catalyst from the regenerator, and the ungenerated catalyst in the second riser reactor enters the stripping section of the secondary settler After being stripped, part of the spent catalyst enters the regenerator for regeneration, and the other part enters the pre-lift mixer to mix with the regenerated catalyst from the regenerator, and the mixed catalyst enters the lower part of the first riser reactor to contact with the raw material oil for reaction. By using the method of the invention, the gasoline yield of the catalytic cracking unit can be increased by 3-20 percentage points, the gasoline RON can be increased by more than 0.5 units, and the gasoline olefin content can be reduced by more than 3 volume percentage points. The RON of gasoline directly produced in the second riser reactor is above 96, and the volume content of olefins is below 10%.

Description

technical field [0001] The invention belongs to the field of catalytic cracking of hydrocarbon oil in the absence of hydrogen, and particularly relates to a catalytic cracking method for prolific gasoline production. Background technique [0002] Catalytic cracking unit is an important secondary processing unit in the oil refining industry, and it is also the main processing unit for the production of motor gasoline. At present, more than 65% of the blending components of domestic motor gasoline are FCC gasoline. In recent years, due to the cleaning of gasoline, especially The requirements of gasoline olefin content and the strong market demand for propylene have led to various catalytic cracking processes to reduce gasoline olefin content and increase propylene production. reduce. [0003] With the enrichment of domestic refining and processing methods and changes in market demand, on the one hand, the proportion of hydrotreating components in the catalytic cracking feedst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G55/06
Inventor 闫鸿飞孟凡东张亚西王龙延李秋芝武立宪
Owner SINOPEC LUOYANG PETROCHEM ENG CORP
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