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US 2023/0416622 A1Published application
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
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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 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).
9 more elements
A process for converting a hydrocarbon-containing feed by pyrolysis and gasification/combustion, the process comprising:
- (I) feeding a first particle stream comprising particles at a pyrolysis temperature into a pyrolysis zone through a particles inlet in proximity to or connected to a first end of the pyrolysis zone;
- (II) feeding a vapor phase hydrocarbon-containing feed comprising hydrocarbons and steam into the pyrolysis zone through a first pyrolysis feed inlet, wherein the first pyrolysis feed inlet is located closer to the first end than a second end of the pyrolysis zone;
- (III) contacting the vapor phase hydrocarbon-containing feed with the particles in the pyrolysis zone to effect pyrolysis of at least a portion of the hydrocarbons in the vapor phase hydrocarbon-containing feed to produce a first pyrolysis zone effluent comprising olefins and the particles, wherein coke is formed on the surface of the particles;
- (IV) feeding a liquid phase hydrocarbon-containing feed into the pyrolysis zone through a second pyrolysis feed inlet, wherein the second pyrolysis feed inlet is located closer to the second end than the first end of the pyrolysis zone, and the second pyrolysis feed inlet is downstream of the first pyrolysis feed inlet;
- (V) contacting the liquid phase hydrocarbon-containing feed with the particles in the pyrolysis zone to effect pyrolysis of at least a portion of the liquid phase hydrocarbon-containing feed to produce a second pyrolysis zone effluent comprising additional olefins and the particles, wherein additional coke is formed on the surface of the particles;
- (VI) obtaining from the second pyrolysis zone effluent a first gaseous stream rich in the olefins and a second particle stream rich in the particles;
- (VII) feeding at least a portion of the second particle stream, an oxidant stream, and an optional steam stream into a gasification/combustion zone;
- (VIII) contacting the second particle stream, the oxidant stream, and the optional steam stream within the gasification/combustion zone to effect gasification/combustion of at least a portion of the coke disposed on the surface of the particles to produce a gasification/combustion zone effluent comprising heated and regenerated particles and a gasification/combustion gas mixture;
- (IX) obtaining from the gasification/combustion zone effluent a second gaseous stream rich in gasification/combustion gas mixture and a third particle stream rich in the heated and regenerated particles;
- and
- (X) feeding at least a portion of the third particle stream into the pyrolysis zone as at least a portion of the particles fed into the pyrolysis zone in step (I).
8 more elements
A process for converting a hydrocarbon-containing feed by pyrolysis and gasification/combustion, the process comprising:
- (I) feeding the hydrocarbon-containing feed and heated particles through a hydrocarbon feed inlet and heated particles through a first particle inlet into a pyrolysis zone;
- (II) contacting the hydrocarbon-containing feed with the heated particles in the pyrolysis zone to effect pyrolysis of at least a portion of the hydrocarbon-containing feed to produce a pyrolysis zone effluent comprising olefins and the particles, wherein coke is formed on the surface of the particles;
- (III) carrying at least one of (IIIa), (IIIb), and (IIIc) below:
- (IIIa) carrying out (IIIa-1) and (IIIa-2) below:
- (IIIa-1) feeding a first quench medium stream comprising one or more reactive hydrocarbons through a first quench medium inlet into the pyrolysis zone, wherein the first quench medium inlet is downstream of the hydrocarbon feed inlet, wherein at least a portion of the one or more reactive hydrocarbons undergoes pyrolysis, and wherein a cooled pyrolysis zone effluent is obtained from the pyrolysis zone;
- (IIa-2) obtaining from the cooled pyrolysis zone effluent a first gaseous stream rich in the olefins and a second particle stream rich in the particles;
- (IIIb) carrying out (IIIb-1) and (IIb-2) below:
- (IIIb-1) contacting the pyrolysis zone effluent with a second quench medium comprising one or more reactive hydrocarbons to produce a cooled pyrolysis zone effluent, wherein the pyrolysis zone effluent is at a temperature sufficient to effect pyrolysis of at least a portion of the one or more reactive hydrocarbons in the second quench medium;
- and (IIIb-2) obtaining from the cooled pyrolysis zone effluent a first gaseous stream rich in the olefins and a second particle stream rich in the particles;
- and
- (IIIc) carrying out (IIIc-1) and (IIIc-2) below:
- (IIIc-1) obtaining from the pyrolysis zone effluent a first gaseous stream rich in the olefins and a second particle stream rich in the particles;
- and (IIIc-2) contacting the first gaseous stream with a third quench medium comprising one or more reactive hydrocarbons to produce a cooled first gaseous stream, wherein the first gaseous stream is at a temperature sufficient to effect pyrolysis of at least a portion of the one or more reactive hydrocarbons in the third quench medium;
- (IV) feeding at least a portion of the second particle stream, an oxidant stream, and an optional second steam stream into a gasification/combustion zone;
- (V) contacting the second particle stream, the oxidant stream, and the optional steam stream within the gasification/combustion zone to effect gasification/combustion of at least a portion of the coke disposed on the surface of the particles to produce a gasification/combustion zone effluent comprising heated and regenerated particles and a gasification/combustion gas mixture;
- (VI) 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 heated and regenerated particles;
- and
- (VII) feeding at least a portion of the third particle stream into the pyrolysis zone as at least a portion of the heated particles fed into the pyrolysis zone in step (I).
15 more elements
Dependencies are inferred from the claim text.