FCC riser quick separation system： a review

The riser reactor is the key unit in the fluid catalytic cracking（FCC） process. As the FCC feedstocks become heavier, the product mixture of oil, gas and catalysts must be separated immediately at the outlet of the riser to avoid excessive coking. The quick separation system is the core equipment in...

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Bibliographic Details
Published inPetroleum science Vol. 13; no. 4; pp. 776 - 781
Main Authors Li, Zhi, Lu, Chun-Xi
Format Journal Article
LanguageEnglish
Published Beijing China University of Petroleum (Beijing) 01.11.2016
KeAi Publishing Communications Ltd
KeAi Communications Co., Ltd
Subjects
Catalysts
Catalytic cracking
Coking
Crude oil
Cyclone separators
Cyclones
Earth and Environmental Science
Earth Sciences
Economics and Management
Energy Policy
FCC
Fluid catalytic cracking
Fluidization
Gas separation
Industrial and Production Engineering
Industrial applications
Industrial Chemistry/Chemical Engineering
Mineral Resources
Natural gas
Post-riser system
Pressure drop
Quick separation
Review
Risers
Separation
Separators
催化裂化原料
催化裂化装置
分离系统
提升管反应器
石油大学（北京）
立管系统
综述
China, People's Rep., Beijing
Quick separation
Fluidization
Post-riser system
FCC
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Summary:The riser reactor is the key unit in the fluid catalytic cracking（FCC） process. As the FCC feedstocks become heavier, the product mixture of oil, gas and catalysts must be separated immediately at the outlet of the riser to avoid excessive coking. The quick separation system is the core equipment in the FCC unit. China University of Petroleum（Beijing） has developed many kinds of separation system including the fender-stripping cyclone and circulating-stripping cyclone systems, which can increase the separation efficiency and reduce the pressure drop remarkably. For the inner riser system, a vortex quick separation system has been developed. It contains a vortex quick separator and an isolated shell. In order to reduce the separation time, a new type of separator called the short residence time separator system was developed. It can further reduce the separation time to less than 1 s. In this paper, the corresponding design principles,structure and industrial application of these different kinds of separation systems are reviewed. A system that can simultaneously realize quick oil gas separation, quick oil gas extraction and quick pre-stripping of catalysts at the end of the riser is the trend in the future.
Bibliography:The riser reactor is the key unit in the fluid catalytic cracking（FCC） process. As the FCC feedstocks become heavier, the product mixture of oil, gas and catalysts must be separated immediately at the outlet of the riser to avoid excessive coking. The quick separation system is the core equipment in the FCC unit. China University of Petroleum（Beijing） has developed many kinds of separation system including the fender-stripping cyclone and circulating-stripping cyclone systems, which can increase the separation efficiency and reduce the pressure drop remarkably. For the inner riser system, a vortex quick separation system has been developed. It contains a vortex quick separator and an isolated shell. In order to reduce the separation time, a new type of separator called the short residence time separator system was developed. It can further reduce the separation time to less than 1 s. In this paper, the corresponding design principles,structure and industrial application of these different kinds of separation systems are reviewed. A system that can simultaneously realize quick oil gas separation, quick oil gas extraction and quick pre-stripping of catalysts at the end of the riser is the trend in the future.
Fluidization;Quick separation;FCC;Postriser system
11-4995/TE
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ISSN:1672-5107
1995-8226
DOI:10.1007/s12182-016-0119-0