Back to results
US 12,559,445 B2Granted
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
Estimating the term…
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, wherein the particles in the first particle stream comprise silica, alumina, titania, zirconia, magnesia, pumice, ash, clay, diatomaceous earth, bauxite, spent fluidized catalytic cracker catalyst, or a mixture thereof;
- (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 a 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 portion of the second 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.
8 more elements
A process for upgrading a hydrocarbon-containing feed, comprising:
- (Ia) providing a raw feed comprising C2+ hydrocarbons;
- (Ib) heating the raw feed;
- (Ic) separating the heated raw feed to obtain a vapor fraction and a liquid fraction;
- (Id) feeding at least a portion of the vapor fraction as a hydrocarbon-containing feed stream into a pyrolysis zone via a pyrolysis feed inlet, wherein the vapor fraction comprises C2+ hydrocarbons;
- (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 a 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 portion of the second 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.
11 more elements
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 a 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 portion of the second 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;
- (X) feeding a first stream of oligomerization catalyst particles and at least a portion of the first gaseous steam into an oligomerization zone;
- (XI) contacting at least a portion of the first gaseous stream with the first stream of 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, wherein the oligomerization catalyst is present in a fluid bed in the oligomerization zone;
- (XII) withdrawing a second stream of oligomerization catalyst particles from the oligomerization zone;
- (XIII) cooling the second stream of oligomerization catalyst particles to produce a cooled third stream of oligomerization catalyst particles;
- and
- (XIV) feeding the cooled third stream of oligomerization catalyst particles into the oligomerization zone.
12 more elements
Dependencies are inferred from the claim text.