Catalytic conversion method for improving product distribution

A catalytic conversion method and product technology, which are applied in the petroleum industry, processing hydrocarbon oil, etc., can solve problems such as poor selectivity, and achieve the effects of reduced dry gas yield, reduced crushing tendency, and prolonged reaction time.

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for better control on producing high quality liquid fuel from crude oil without increasing its production costs due to traditional methods such as heat treatment and distillations. It achieves these benefits through adjustments made based upon factors like feedstock type, refining steps, and operating conditions.

Problems solved by technology

This patented technical problem addressed in the patented describes how to optimize the production of light paraffines while maximizing yields of other valuable products such as naptha and diesel fuel without increasing costs associated with upgrading heavy crude fractions like gasolensate.

Method used

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  • Catalytic conversion method for improving product distribution
  • Catalytic conversion method for improving product distribution
  • Catalytic conversion method for improving product distribution

Examples

Experimental program
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Effect test

Embodiment 1

[0057] This example illustrates the situation of increasing the isobutene content in liquefied gas and the olefin content in gasoline in a medium-sized variable-diameter riser reactor by adopting the method provided by the present invention and using a catalyst with a coarse particle size distribution.

[0058] The total height of the pre-lift section, the first reaction zone, the second reaction zone and the outlet zone of the reactor is 15 meters, the diameter of the pre-lift section is 0.025 meters, and its height is 1.5 meters; the diameter of the first reaction zone is 0.025 meters, and its height It is 4 meters; the diameter of the second reaction zone is 0.1 meters, and its height is 6.5 meters; the diameter of the outlet zone is 0.025 meters, and its height is 3 meters; is 45°; the base angle of the isosceles trapezoid in the longitudinal section of the junction of the second reaction zone and the outlet zone is 60°.

[0059] The preheated raw material oil listed in Ta...

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Abstract

The invention discloses a catalytic conversion method for improving product distribution. The method comprises the following steps of: allowing high-quality raw oil and a thermally regenerative catalyst with lower activity and coarse size distribution to contact on the lower part of a reactor to undergo cracking reaction, performing selective hydrogen transfer reaction and isomerization reaction on the generated oil gas and a carbon-containing catalyst in upstream under a certain reaction environment, separating reaction products, and stripping and regenerating spent catalysts for recycle. By the method, under the condition that the isobutene content in the liquefied gas and the olefin content in gasoline group composition are increased, the dry gas yield and coke are obviously reduced; and the particles of the catalysts are more uniform, so the local temperature distribution is more uniform in the regenerating process, and the breaking tendency of the catalysts is correspondingly reduced.

Description

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Claims

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Application Information

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Owner CHINA PETROLEUM & CHEM CORP
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