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Lift pipe catalytic cracking device

A catalytic cracking device and riser technology, applied in catalytic cracking, cracking, chemical instruments and methods, etc., can solve the problems of easy nozzle blockage, low cracking activity, poor sulfur reduction effect, etc., to improve atomization effect and reduce sulfur content, the effect of improving shear tearing ability

Inactive Publication Date: 2020-04-07
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a riser catalytic cracking device to overcome the defects of low cracking activity, poor sulfur reduction effect and easy blockage of nozzles in the catalytic cracking process in the prior art.

Method used

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Experimental program
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Effect test

Embodiment 1

[0108] The catalytic cracking device of the present invention is used to carry out catalytic cracking. Under the single variable situation, the catalytic situation is investigated, wherein the catalyst regeneration temperature is 650 ° C, the reaction temperature in the riser is 430 ° C, the agent-oil ratio is 5, and the hydrogen flow rate of the oxidation-reduction treatment unit is 20 L / h. The variables are specifically:

[0109] Catalyst A is treated with hydrogen in the oxidation-reduction treatment unit at different temperatures for 30 minutes, and the catalytic cracking reaction results are listed in Table 3;

[0110] Catalyst A is treated with hydrogen in the oxidation-reduction treatment unit at a temperature of 500 ° C for different time and the catalytic cracking reaction results are listed in Table 4; Catalysts A, B, and C are treated with hydrogen in the oxidation-reduction treatment unit The reaction results after treatment for 20 minutes at ℃ temperature are list...

Embodiment 2

[0112] Using the catalytic cracking device of the present invention, the reaction results after the catalyst C was treated with hydrogen at a temperature of 550° C. for 20 minutes in the oxidation-reduction treatment unit are listed in Table 6. Other conditions: reaction temperature 500° C., regeneration temperature 690° C., agent The oil ratio is 6, and the hydrogen flow rate is 20L / h.

Embodiment 3

[0114] Using the catalytic cracking unit of the present invention, the reaction results after catalyst C was treated with hydrogen at 550°C for 20 minutes in the oxidation-reduction treatment unit are listed in Table 7. Other conditions: raw oil riser reaction temperature 500°C, regeneration temperature 690°C, agent-to-oil ratio 6; gasoline (light feedstock) riser reaction temperature 450°C, regeneration temperature 690°C, agent-to-oil ratio 5.

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Abstract

The invention discloses a lift pipe catalytic cracking device. The lift pipe catalytic cracking device comprises a lift pipe reactor, a catalyst regenerator, and a catalyst redox treatment unit; the inlet end of the lift pipe reactor communicates with an atomizing nozzle, and the outlet end of the lift pipe reactor communicates with a stripper; the catalyst regenerator comprises a catalyst inlet and a catalyst outlet, and the catalyst inlet communicates with the stripper; and the catalyst redox treatment unit comprises an inlet and an outlet, the inlet communicates with the catalyst outlet ofthe catalyst regenerator, and the outlet communicates with the lift pipe reactor. According to the device, a finally obtained product can be distributed more reasonably, and the sulfur content in theproduct is greatly reduced.

Description

technical field [0001] The invention belongs to the field of catalytic cracking and relates to a riser catalytic cracking device. Background technique [0002] In recent years, with the rapid development of the economy, the consumption of automobiles and petroleum has increased rapidly, and at the same time it has brought about increasingly serious negative impacts, namely the deterioration of air quality and other environmental problems. Therefore, environmental protection has received widespread attention from the society. Environmental protection Regulations are getting stricter. Beijing, China implemented the Euro III standard on July 1, 2005, and finally by 2010, the motor vehicle emission standard will be synchronized with that of Europe. Last year, the European Ministry of the Environment reached an agreement on the implementation plan of the sulfur content in fuel oil, suggesting that gasoline and diesel fuel with a sulfur content of 10ppm should be enforced from 20...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/24B01J8/38C10G11/05C10G11/18
CPCB01J8/388B01J8/245C10G11/05C10G11/182C10G11/18
Inventor 柳召永张忠东王艳飞王辰晨刘明霞曹庚振曹兰花汪毅樊红超翟佳宁孙志国杜晓辉蔡云芳
Owner PETROCHINA CO LTD