Down-flow catalytic cracking/ cracking reactor for processing heavy raw oil

A cracking reactor and catalytic cracking technology, which is applied in the field of downward catalytic cracking/cracking reactors, can solve problems such as gas-solid back-mixing, downward sliding, axial and radial particle density, and uneven velocity distribution, so as to improve carbon burning Effects of conversion rate, reduction of secondary reactions, and control of contact time
CN1546610AInactive Publication Date: 2004-11-17TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2004-11-17
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a down-flow catalytic cracking / cracking reactor for processing heavy raw oil, comprising a gas-solid parallel flow descending super short contact catalytic reactor, a steam stripping device, a cascade turbulent fluidized bed form first section regenerator and a lift tube form second section regenerator, wherein the second section regenerator is connected to the main unit of the reactor through a pre-lift tube.
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Description

technical field

[0001] The invention belongs to the scope of petrochemical processing equipment, in particular to a downward catalytic cracking / cracking reactor for processing heavy raw oil. Background technique

[0002] The present invention relates to a form of down-flow catalytic cracking / cracking reactor for processing heavy feed oil. Catalytic cracking is an important industrial process in the oil refining industry. At present, petroleum enterprises continue to use and flow up the fast circulating fluidized bed system for catalytic cracking reaction. Since the direction of gas-solid motion in the co-current upward circulating fluidized bed is against the gravity field, the particles tend to slide downward under the action of gravity, resulting in serious gas-solid back-mixing phenomenon, uneven particle density and velocity distribution in the axial and radial directions, and further It causes some catalyst particles to stay in the reactor for too long, leading to cok...

Claims

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