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US 12,698,451 B2Granted
Processes and systems for upgrading a hydrocarbon-containing feed
AssigneeExxonMobil Chemical Patents Inc.
InventorsMohsen N. Harandi, Paul F. Keusenkothen, Ying Liu, James R. Lattner
Life of this patent
Estimating the term…
Abstract
Processes and for converting a hydrocarbon-containing feed by pyrolysis and gasification/combustion. The hydrocarbon-containing feed can be heated to produce a heated feed that can be separated into a vapor and a liquid. At least a portion of the vapor and/or at least a portion of the liquid and a particle stream can be fed into a pyrolysis zone and contacted therein to effect pyrolysis of the hydrocarbons and produce a pyrolysis effluent.
Claims24
A process for converting a hydrocarbon-containing feed by pyrolysis and gasification/combustion, comprising:
- (I) heating a hydrocarbon-containing feed comprising C5+ hydrocarbons and water to produce a heated feed;
- (II) separating a vapor fraction and a liquid fraction from the heated feed, wherein the vapor fraction comprises steam;
- (III) feeding:
- (a) a portion of the vapor fraction through a first pyrolysis feed inlet into a first pyrolysis zone;
- and
- (b) a portion of the liquid fraction through a second pyrolysis feed inlet into the first pyrolysis zone;
- and
- (c) a first particle stream comprising particles having a pyrolysis temperature through a first particles inlet into the first pyrolysis zone;
- (IV) optionally feeding a first steam stream through a first steam stream inlet into the first pyrolysis zone;
- (V) contacting the vapor fraction and/or the liquid fraction with the particles in the first pyrolysis zone under a first set of pyrolysis conditions to effect pyrolysis of at least a portion of the hydrocarbons in the vapor fraction and/or the liquid fraction;
- (VI) obtaining from the first pyrolysis zone a first pyrolysis zone effluent comprising olefins and the particles, wherein coke is formed on the surface of the particles;
- (VII) obtaining from the first pyrolysis zone effluent a first gaseous stream rich in the olefins and a second particle stream rich in the particles;
- (VIII) feeding at least a portion of the second particle stream, an oxidant stream, and optionally a second steam stream into a gasification/combustion zone;
- (IX) contacting the second particle stream, the oxidant stream, and the optional second steam stream within the gasification/combustion zone to effect gasification and/or combustion of at least a portion of the coke disposed on the surface of the particles to produce a gasification/combustion zone effluent comprising regenerated particles and a gasification/combustion gas mixture;
- (X) 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;
- and
- (XI) feeding at least a portion of the third particle stream into the first pyrolysis zone as at least a portion of the first particle stream fed into the first pyrolysis zone in step (III).
14 more elements
A process for converting a hydrocarbon-containing feed by pyrolysis and gasification/combustion, comprising:
- (I) heating a hydrocarbon-containing feed comprising C5+ hydrocarbons and water to produce a heated feed;
- (II) separating a vapor fraction and a liquid fraction from the heated feed, wherein the vapor fraction comprises steam;
- (III) feeding at least one of (a) a portion of the vapor fraction through a first pyrolysis feed inlet and (b) a portion of the liquid fraction through a second pyrolysis feed inlet, and a first particle stream comprising particles having a pyrolysis temperature through a first particles inlet into a first pyrolysis zone;
- (IV) optionally feeding a first steam stream through a first steam stream inlet into the first pyrolysis zone;
- (V) contacting the vapor fraction and/or the liquid fraction with the particles in the first pyrolysis zone under a first set of pyrolysis conditions to effect pyrolysis of at least a portion of the hydrocarbons in the vapor fraction and/or the liquid fraction;
- (VI) obtaining from the first pyrolysis zone a first pyrolysis zone effluent comprising olefins and the particles, wherein coke is formed on the surface of the particles;
- (VII) obtaining from the first pyrolysis zone effluent a first gaseous stream rich in the olefins and a second particle stream rich in the particles;
- (VIII) feeding at least a portion of the second particle stream, an oxidant stream, and optionally a second steam stream into a gasification/combustion zone;
- (IX) contacting the second particle stream, the oxidant stream, and the optional second steam stream within the gasification/combustion zone to effect gasification and/or combustion of at least a portion of the coke disposed on the surface of the particles to produce a gasification/combustion zone effluent comprising regenerated particles and a gasification/combustion gas mixture;
- (X) 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;
- and
- (XI) feeding at least a portion of the third particle stream into the first pyrolysis zone as at least a portion of the first particle stream fed into the first pyrolysis zone in step (III);
- wherein:
- the first pyrolysis zone has a first end and a second end,
- the first particles inlet is in proximity to or connected to the first end of the first pyrolysis zone;
- the first pyrolysis zone effluent exits the first pyrolysis zone from the second end;
- and
- the first pyrolysis feed inlet, if present, is located downstream of the first particles inlet and upstream of the second end;
- the second pyrolysis feed inlet, if present, is located downstream of the first particles inlet and upstream of the second end;
- and
- the first steam stream inlet, if present, is located downstream of the first particles inlet and upstream of the second end.
18 more elements
A process for converting a hydrocarbon-containing feed by pyrolysis and gasification/combustion, comprising:
- (I) heating a hydrocarbon-containing feed comprising C5+ hydrocarbons and water to produce a heated feed;
- (II) separating a vapor fraction and a liquid fraction from the heated feed, wherein the vapor fraction comprises steam;
- (III) feeding at least one of (a) a portion of the vapor fraction through a first pyrolysis feed inlet and (b) a portion of the liquid fraction through a second pyrolysis feed inlet, and a first particle stream comprising particles having a pyrolysis temperature through a first particles inlet into a first pyrolysis zone;
- (IV) feeding a first steam stream through a first steam stream inlet into the first pyrolysis zone;
- (V) contacting the vapor fraction and/or the liquid fraction with the particles in the first pyrolysis zone under a first set of pyrolysis conditions to effect pyrolysis of at least a portion of the hydrocarbons in the vapor fraction and/or the liquid fraction;
- (VI) obtaining from the first pyrolysis zone a first pyrolysis zone effluent comprising olefins and the particles, wherein coke is formed on the surface of the particles;
- (VII) obtaining from the first pyrolysis zone effluent a first gaseous stream rich in the olefins and a second particle stream rich in the particles;
- (VIII) feeding at least a portion of the second particle stream, an oxidant stream, and optionally a second steam stream into a gasification/combustion zone;
- (IX) contacting the second particle stream, the oxidant stream, and the optional second steam stream within the gasification/combustion zone to effect gasification and/or combustion of at least a portion of the coke disposed on the surface of the particles to produce a gasification/combustion zone effluent comprising regenerated particles and a gasification/combustion gas mixture;
- (X) 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;
- and
- (XI) feeding at least a portion of the third particle stream into the first pyrolysis zone as at least a portion of the first particle stream fed into the first pyrolysis zone in step (III),
- wherein the first steam stream inlet and the second pyrolysis feed inlet are both present, and the first steam stream inlet is located upstream of the second pyrolysis feed inlet.
10 more elements
Dependencies are inferred from the claim text.