Process and apparatus for hydroprocessing a hydrocarbon stream
AssigneeUop LLC
InventorsAlexander C. Jimenez, Michael R. Smith, Trung Pham, Edward J. Houde
Life of this patent
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Abstract
A process and apparatus provides alternative hydrotreating reactor trains for hydrotreating a hydrocarbon stream. One hydrotreating reactor train is smaller than the other and the smaller train comes on stream to allow replacement or regeneration of catalyst in the larger train. A sulfide system also sulfides the catalyst volume in the reactor train that is off stream to prepare it for renewed hydroprocessing of feed when back on stream. The process and apparatus can be used to keep hydroprocessing reactors on stream to continuously provide feed to an FCC unit which has a longer period before shut down.
Claims20
A process for hydroprocessing a hydrocarbon stream comprising:
- feeding said hydrocarbon stream and a hydrogen stream to a first volume of hydroprocessing catalyst to hydroprocess said hydrocarbon stream in the presence of said hydrogen stream to provide a first hydroprocessed stream;
- terminating feed of said hydrocarbon stream to said first volume of catalyst;
- and
- feeding said hydrocarbon stream and said hydrogen stream to a second volume of hydroprocessing catalyst, second volume being smaller than said first volume of catalyst to hydroprocess said hydrocarbon stream in the presence of said hydrogen stream to provide a second hydroprocessed stream.
An apparatus for converting a hydrocarbon stream comprising:
- a feed line for carrying a hydrocarbon stream;
- a hydrocarbon split in the feed line joined to a first hydrocarbon feed line and a second hydrocarbon feed line;
- a first reactor train fluidly connected to the first hydrocarbon feed line;
- and
- a second reactor train fluidly connected to the second feed line, wherein the first reactor train comprises more reactor volume than the second reactor train.
A process for hydroprocessing a hydrocarbon stream comprising:
- feeding said hydrocarbon stream and a first hydrogen stream to a first hydroprocessing reactor comprising a hydroprocessing catalyst to hydroprocess said hydrocarbon stream in the presence of said hydrogen stream to provide a first hydroprocessed stream;
- feeding a flushing oil comprising a sulfiding agent and a second hydrogen stream to a second hydroprocessing reactor to sulfide a hydroprocessing catalyst in a second hydroprocessing reactor;
- terminating feed of said hydrocarbon stream and said first hydrogen stream to said first hydroprocessing reactor;
- terminating feed of said flushing oil and said second hydrogen stream to said second hydroprocessing reactor;
- feeding said hydrocarbon stream and said first hydrogen stream to said second hydroprocessing reactor to hydroprocess said hydrocarbon stream in the presence of said first hydrogen stream to provide a second hydroprocessed stream;
- and
- feeding said flushing oil comprising a sulfiding agent and said second hydrogen stream to said first hydroprocessing reactor to sulfide a hydroprocessing catalyst in said first hydroprocessing reactor.
Dependencies are inferred from the claim text.