Heavy oil catalytic cracking method and heavy oil catalytic cracking equipment

A technology of catalytic cracking and heavy oil catalysis, which is applied in the direction of catalytic cracking, cracking, petroleum industry, etc., can solve the problems of increased coking rate, lower mixing temperature at the bottom, and increase of unvaporized oil, so as to reduce the coking rate and improve the Oil ratio, the effect of reducing unvaporized oil

Inactive Publication Date: 2015-01-14
刘英聚
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Recently, some heavy oil catalytic cracking units have adopted regenerated agent cooling technology. After the application of this technology, the circulation of catalyst increases, and the increase of agent-oil ratio is beneficial to improve the activity of cata

Method used

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  • Heavy oil catalytic cracking method and heavy oil catalytic cracking equipment
  • Heavy oil catalytic cracking method and heavy oil catalytic cracking equipment
  • Heavy oil catalytic cracking method and heavy oil catalytic cracking equipment

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Embodiment Construction

[0031] see Figure 1 ~ Figure 7 , The lower part of the pre-lifter 10 is provided with a fluidized medium loop tube 9, the lower side is connected with the catalyst feed pipe 8, and the upper end is connected with the cracking section 6. The upper end of the middle heat-taking section 2 is connected with the conveying pipe 1, and the lower end is connected with the cracking section 6. There are plate distributors 5 and mushroom distributors 4 (or umbrella hat distributor 4 or hat distributor 4 or column distributor 4 or tubular distributor 4), there is a feed nozzle 7 at the lower part of the cracking section 6. figure 1 , The middle heat-taking section 2 is provided with a heat-taking pipe 3 inside, and the lower part of the pre-lifter 10 is simultaneously connected with another catalyst feeding pipe 11; Image 6 , The middle heating section 2 is connected with the low-temperature regenerant delivery pipe 3, and the lower part of the pre-lifter 10 is simultaneously connected wi...

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Abstract

The invention relates to a heavy oil catalytic cracking method and belongs to the technical field of petrochemical engineering, and the heavy oil catalytic cracking method is used for solving the coking problem of a heavy oil catalytic cracking riser and a settler as well as reducing the coke generating ratio of the device, improving the product yield and improving the product quality. The method comprises the following steps: feeding a catalyst; feeding heavy raw material oil; vaporizing the raw material oil; carrying out gas-solid contact; carrying out a catalytic cracking reaction; and carrying out a gas-solid separation process. The method is characterized by improving the catalyst/oil ratio, the mixing temperature of a feeding section, the catalyst activity in the catalytic cracking process and the vaporization rate of the fed heavy oil by virtue of heat taking in the middle of a riser reactor. The method has the advantages of improving the catalyst activity in the catalytic cracking process as well as the vaporization rate of the fed heavy oil, reducing the non-vaporized oil, preventing the riser and the settler from coking, reducing the coke yield, improving the product yield and improving the product quality. The invention further provides a combined distributor and middle heat taking equipment of the riser for realizing the method. The invention relates to a catalytic cracking device for processing heavy oil.

Description

Technical field [0001] The invention belongs to the technical field of petrochemical industry, and particularly relates to a method and equipment for catalytic cracking of heavy oil. Background technique [0002] The catalytic cracking process is a gas-solid catalytic cracking reaction of heavy oil on the catalyst to produce light oil. The liquid heavy feedstock oil in the catalytic cracking industrial unit is atomized and enters the bottom of the riser reactor. It first vaporizes the heavy feedstock oil when it comes in contact with the high-temperature regenerant, and then the gas-solid catalytic cracking reaction occurs. The reaction product oil gas and the spent catalyst It flows out from the outlet of the riser reactor, and the gas-solid separation reaction product oil and gas exit the reactor, and the spent catalyst is regenerated. Since catalytic cracking is an endothermic reaction and coke is produced, the temperature and catalyst activity in the riser reactor gradually ...

Claims

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Application Information

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IPC IPC(8): C10G11/00
CPCC10G11/00C10G2300/1044
Inventor 刘英聚
Owner 刘英聚
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