Processes and Systems for Upgrading a Hydrocarbon-Containing Feed
AssigneeExxonMobil Chemical Patents Inc.
InventorsMohsen N. Harandi, Paul F. Keusenkothen, Ying Liu
Life of this patent
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Abstract
Processes for upgrading a hydrocarbon-containing feed. The feed and a first particle stream can be contacted under pyrolysis conditions to effect pyrolysis of the feed to produce a pyrolysis effluent that can include olefins and the particles, where coke can be formed on the particles. A first gaseous stream and a second particle stream can be obtained from the pyrolysis effluent. At least a portion of the first gaseous stream can be contacted with oligomerization catalyst particles under oligomerization conditions to effect oligomerization of at least a portion of olefins in the first gaseous stream.
Claims24
A process for upgrading a hydrocarbon-containing feed, comprising:
- (I) feeding a hydrocarbon-containing feed stream comprising C2+ hydrocarbons into a pyrolysis zone;
- (II) feeding a first particle stream comprising particles having a pyrolysis temperature into the pyrolysis zone;
- (III) contacting the hydrocarbon-containing feed stream with the particles in the pyrolysis zone under pyrolysis conditions to effect pyrolysis of at least a portion of the C2+ hydrocarbons to produce a pyrolysis zone effluent comprising olefins and the particles, wherein coke is formed on the surface of the particles;
- (IV) obtaining from the pyrolysis zone effluent a first gaseous stream rich in the olefins and a second particle stream rich in the particles;
- (V) feeding at least a portion of the second particle stream, an oxidant stream, and optionally a first steam stream into a gasification/combustion zone;
- (VI) contacting the first particle stream, the oxidant stream, and optionally the first steam stream in the gasification/combustion zone under gasification/combustion conditions to produce a gasification/combustion zone effluent comprising regenerated particles and a gasification/combustion gas mixture;
- (VII) obtaining from the gasification/combustion zone effluent a second gaseous stream rich in the gasification/combustion gas mixture and a third particle stream rich in the regenerated particles;
- (VIII) feeding at least a portion of the third particle stream into the pyrolysis zone as at least a portion of the first particle stream fed into the pyrolysis zone in step (II);
- (IX) feeding at least a portion of the first gaseous stream into an oligomerization zone;
- and
- (X) contacting at least a portion of the first gaseous stream with oligomerization catalyst particles in the oligomerization zone under oligomerization conditions to effect oligomerization of at least a portion of the olefins in the first gaseous stream to produce an oligomerization zone effluent.
Dependencies are inferred from the claim text.