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US 8,263,008 B2Granted
Apparatus for improving flow properties of crude petroleum
AssigneeUop LLC
InventorsBrian W. Hedrick, Daniel B. Gillis
Life of this patent
Estimating the term…
Abstract
A process and apparatus for improving flow properties of crude may include processing a first crude stream, which may in turn include cracking the first crude stream with catalyst to form a cracked stream and spent catalyst, hydrotreating a portion of the cracked stream and then mixing the hydrotreated stream with an unprocessed second crude stream.
Claims20
An apparatus for improving flow properties of crude, comprising:
- a riser charged with catalyst and having a bottom and a top, wherein a crude conduit delivers a first crude stream into said bottom and spent catalyst and a vaporized cracked stream exit from said top;
- a vessel in downstream communication with said riser containing a cyclone for receiving and separating said vaporized cracked stream from said spent catalyst;
- a fractionator in downstream communication with said vessel for receiving said vaporized cracked stream and fractionating a naphtha stream;
- an absorber for scrubbing hydrogen sulfide from light ends downstream of the fractionator;
- a hydrotreating reactor in downstream communication with said fractionator for receiving at least portion of said naphtha stream, said hydrotreating reactor also in communication with said absorber;
- and
- a conduit carrying a second crude stream in downstream communication with said hydrotreater for receiving a hydrotreated naphtha into said second crude stream.
4 more elements
An apparatus for improving flow properties of crude, comprising:
- a riser charged with catalyst and having a bottom and a top, wherein a crude conduit delivers a first crude stream into said bottom and an outlet withdraws spent catalyst and a vaporized cracked stream from said top;
- a vessel in downstream communication with said outlet containing a cyclone for receiving and separating said vaporized cracked stream from said spent catalyst;
- a regenerator in downstream communication with said vessel for receiving and regenerating said spent catalyst;
- said riser in downstream communication with said regenerator for delivering regenerated catalyst to said riser;
- a fractionator in downstream communication with said vessel for receiving said vaporized cracked stream and fractionating a naphtha stream and an LCO stream;
- a hydrogen purification unit in downstream communication with said fractionator for receiving a dry gas stream to provide a purified hydrogen stream;
- a hydrotreating reactor in downstream communication with a naphtha line of said fractionator for receiving at least a portion of said naphtha stream and said hydrogen purification unit to receive said purified hydrogen stream as said sole source of hydrogen;
- a conduit carrying a second crude stream in downstream communication with said hydrotreating reactor for receiving a hydrotreated naphtha into said second crude stream;
- and
- an LCO line from said fractionator bypassing said hydrotreating reactor and said conduit is in downstream communication with said LCO line for receiving an LCO stream into said second crude stream.
7 more elements
An apparatus for improving flow properties of crude, comprising:
- a riser charged with catalyst and having a bottom and a top, wherein a crude conduit delivers a first crude stream into said bottom and an outlet withdraws spent catalyst and a vaporized cracked stream from said top;
- a vessel in downstream communication with said outlet containing a cyclone for receiving and separating said vaporized cracked stream from said spent catalyst;
- a fractionator in downstream communication with said vessel for receiving said vaporized cracked stream and fractionating a naphtha stream;
- an absorber for scrubbing hydrogen sulfide from light ends downstream of the fractionator;
- an additional absorber in downstream communication with said fractionator to separate the naphtha stream into C3+ naphtha stream and a dry gas stream;
- a hydrogen purification unit in downstream communication with said fractionator for receiving the dry gas stream;
- a hydrotreating reactor in downstream communication with said fractionator for receiving at least portion of said naphtha stream, said absorber and said hydrogen purification unit for receiving purified hydrogen;
- and
- a conduit carrying a second crude stream in downstream communication with said hydrotreating reactor for receiving a hydrotreated naphtha into said second crude stream.
6 more elements
Dependencies are inferred from the claim text.