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A catalytic cracking unit and its regenerated catalyst delivery device

A technology for catalytic cracking units and regeneration catalysts, which is applied in catalytic cracking, cracking, petroleum industry, etc., and can solve the problems that it cannot really become an independent variable, and the heat extraction capacity of the heat extractor is difficult to adjust.

Active Publication Date: 2017-05-10
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the parameter of reactant-oil ratio cannot really become an independent variable because the heat-taking capacity of the heat-taking device is relatively fixed and difficult to adjust in the heat-taking method of the catalytic cracking regenerated agent delivery pipeline, the embodiment of the present invention provides A catalytic cracking unit and its regenerated catalyst temperature adjustment assembly

Method used

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  • A catalytic cracking unit and its regenerated catalyst delivery device
  • A catalytic cracking unit and its regenerated catalyst delivery device
  • A catalytic cracking unit and its regenerated catalyst delivery device

Examples

Experimental program
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Embodiment 1

[0031] The embodiment of the present invention provides a catalytic cracking unit, see figure 1 , the device consists of:

[0032] The regenerator 1 and the reactor 19, the device also includes a regenerated catalyst delivery device, the regenerated catalyst delivery device includes: the first hot regenerated catalyst delivery pipe 20, the catalyst desuperheater 2, the first cold regenerated catalyst delivery pipe 6, the first cold Regeneration slide valve 7, first cold regeneration catalyst riser 8, gas-solid separator 9, flue gas return line 10, catalyst intermediate tank 12, second cold regeneration catalyst delivery pipe 13, second cold regeneration slide valve 14, pre-lift Mixer 15 , second hot regenerated catalyst delivery pipe 16 and hot regenerated slide valve 17 .

[0033] The catalyst desuperheater 2 communicates with the regenerator 1 through the first hot regenerated catalyst delivery pipe 20, and communicates with the first cold regenerated catalyst riser 8 throu...

Embodiment 2

[0045] The embodiment of the present invention provides a catalytic cracking unit, see figure 2 , the structure of the device is basically the same as that of Embodiment 1, the difference is that in this embodiment, the gas-solid separator 9 is a cyclone quick separator, and the gas-solid separator 9 and the regenerator 1 between them are omitted. connecting lines between.

[0046] The working principle of the device in this embodiment is basically the same as that in Embodiment 1, and the detailed description is omitted here.

[0047] In the embodiment of the present invention, the temperature of the mixed regenerated catalyst entering the pre-lift mixer can be adjusted by adding the second cold regeneration slide valve and the hot regeneration slide valve in the catalytic cracking unit, so that the temperature before the reaction of the regenerated catalyst can be adjusted, and then realized The purpose of adjusting the oil ratio of the catalytic cracking reactant. In addi...

Embodiment 3

[0049] An embodiment of the present invention provides a regenerated catalyst delivery device, which is suitable for delivering the regenerated catalyst in the regenerator to the reactor, see image 3 , the regenerated catalyst delivery device includes:

[0050] First hot regenerated catalyst delivery pipe 20, catalyst desuperheater 2, first cold regenerated catalyst delivery pipe 6, first cold regenerated slide valve 7, first cold regenerated catalyst riser 8, gas-solid separator 9, flue gas return line 10. Catalyst intermediate tank 12 , second cold regenerated catalyst delivery pipe 13 , second cold regenerated slide valve 14 , pre-lift mixer 15 , second hot regenerated catalyst delivery pipe 16 and hot regenerated slide valve 17 .

[0051] The catalyst desuperheater 2 communicates with the regenerator 1 through the first hot regenerated catalyst delivery pipe 20, the catalyst desuperheater 2 communicates with the first cold regenerated catalyst riser 8 through the first co...

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Abstract

The invention discloses a catalytic cracking unit and a regenerated catalyst conveying device thereof and belongs to the technical field of petroleum hydrocarbon catalytic cracking. The catalytic cracking unit comprises a regenerator, a reactor, a catalyst cooler, a first cold regenerated catalyst conveying pipe, a first cold regeneration slide valve, a first cold regenerated catalyst lifting pipe, a gas-solid separator, a flue gas return line, a catalyst intermediate tank, a second cold regeneration slide valve, a pre-lifting mixer and a hot regeneration slide valve. The regenerator is communicated with the catalyst cooler through a first hot regenerated catalyst conveying pipe and communicated with the pre-lifting mixer through a second hot regenerated catalyst conveying pipe. The hot regeneration slide valve is mounted on the second hot regenerated catalyst conveying pipe. The catalyst cooler is communicated with the catalyst intermediate tank through the first cold regenerated catalyst conveying pipe and the first cold regenerated catalyst lifting pipe in sequence. The catalyst intermediate tank is communicated with the pre-lifting mixer through a second cold regenerated catalyst conveying pipe. The second cold regeneration slide valve is mounted on the second cold regenerated catalyst conveying pipe.

Description

technical field [0001] The invention relates to the technical field of catalytic cracking of petroleum hydrocarbons, in particular to a catalytic cracking device and a regenerated catalyst delivery device thereof. Background technique [0002] In the catalytic cracking process technology of petroleum hydrocarbons, the catalyst-to-oil ratio of the catalytic cracking reaction (that is, the mass ratio of the catalyst participating in the reaction to the reaction raw material oil) is an important technical parameter. A large and reasonable catalyst-to-oil ratio means that the number of active catalysts participating in the catalytic cracking reaction process is large, and it also means that the average activity of the catalysts in the entire reaction process is high. Increasing the average activity of the catalyst during the reaction can increase the conversion rate of the catalytic cracking reaction, thereby increasing the yield of the target product. [0003] The catalyst-to-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/14
Inventor 郝希仁谢恪谦张国磊朱大亮李雅华
Owner PETROCHINA CO LTD