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Catalytic cracking method

A catalytic cracking and catalyst technology, applied in the direction of catalytic cracking, cracking, only multi-stage series refining and cracking process treatment, etc., can solve the problems of adding more equipment and complex cooling measures of regenerant, and achieve the improvement of total liquid yield, Conducive to product distribution and the effect of reducing olefin content

Inactive Publication Date: 2013-05-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this process is that although the residual activity of the gasoline spent catalyst is relatively high, there is still a certain gap compared with the regenerated catalyst.
This technology adds a regeneration inclined pipe and an air lift pipe, and a catalyst cooler is installed on the newly added regeneration inclined pipe. The cooled catalyst is mixed with the hot catalyst from the original regeneration inclined pipe. After mixing, the lower temperature The regenerant reacts with the raw material. This technology can reduce the mixing temperature of the oil agent, increase the ratio of agent to oil, and improve the product distribution. However, the cooling measures of the regenerant agent in this technology are more complicated and require more equipment.

Method used

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  • Catalytic cracking method

Examples

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Effect test

Embodiment 1

[0036] Embodiment 1 (comparative example)

[0037] The test is carried out on a common riser catalytic cracking test device. The feed is Luning pipeline transportation mixed heavy oil. The main properties are listed in Table 1. The treatment capacity is 30 kg / day. The reverse activity is 62, and the carbon content is 0.05w%. The main operating conditions, product distribution and main properties of the products of the riser reactor are listed in Table 2 and Table 3.

Embodiment 2

[0038] Embodiment 2 (comparative example)

[0039] By embodiment 1, the difference is that the feed is hydrogenated wax oil, the main properties are listed in table 1, and the processing capacity is 30 kg / day, and the catalyst used in the test is RSC-2006 industrial balancer, and the micro-reaction activity of the balance catalyst is 60 , the carbon content is 0.06w%. The main operating conditions, product distribution and main properties of the products of the riser reactor are listed in Table 2 and Table 3.

Embodiment 3

[0040] Embodiment 3 (comparative example)

[0041] According to embodiment 1, difference is that feed is hydrogenated heavy oil, and main character is listed in table 1, and processing capacity is 30 kilograms / day, and the catalyst used in test is MLC-500 industrial balancing agent, and the micro-reactive activity of equilibrium catalyst is 63, The carbon content is 0.03w%. The main operating conditions, product distribution and main properties of the products of the riser reactor are listed in Table 2 and Table 3.

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Abstract

The invention discloses a catalytic cracking method and a catalytic cracking device. According to the invention, raw oil enters the lower part of a riser reactor, and is subjected to a contact reaction with a catalyst from a catalyst pre-lift mixer; oil gas obtained after reaction is separated from spent catalyst; reaction oil gas obtained by separation is delivered into a fractionating tower, and the separated spent catalyst is regenerated; part of high-temperature regenerated catalyst after regeneration enters an external heat remover; part of cooled regenerated catalyst is delivered back to the regenerator, another part of the cooled regenerated catalyst enters the catalyst pre-lift mixer, and a third part of the cooled regenerated catalyst enters the riser reactor from different height positions of the riser. The method provided by the invention can be used for reducing dry gas and coke total yield. A total liquid yield is increased by more than 1.5 percentage points; gasoline olefin volume content is reduced by 5-15 percentage points; and SOx content in flue gas is reduced by more than 30%.

Description

technical field [0001] The invention relates to the field of catalytic cracking of hydrocarbon oil in the absence of hydrogen, in particular to a catalytic cracking method and device. Background technique [0002] While paying attention to environmental protection, maximizing economic benefits is always the goal pursued by enterprises. However, low dry gas and coke yield and high liquid yield have always been the fundamental means for catalytic cracking technology to improve economic benefits. In recent years, various domestic research institutions have conducted fruitful research on optimizing the reaction-regeneration system and improving the distribution of catalytic cracking products. The developed technologies mainly include the following: [0003] US 5451313 discloses that UOP invented the catalytic cracking process in 1995, named "X Design", and its purpose is to increase the ratio of agent to oil and improve product distribution. It is characterized in that a catal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G55/06C10G11/00
Inventor 闫鸿飞王龙延汤红年刘昱孟凡东张聚越乔立功樊麦跃张振千陈曼桥昌国平
Owner CHINA PETROLEUM & CHEM CORP
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