HYDROCARBON PROCESSING APPARATUSES AND METHODS OF REFINING HYDROCARBONS WITH ABSORPTIVE RECOVERY OF C3+ HYDROCARBONS
First Claim
1. A method of refining hydrocarbons, wherein the method comprises:
- providing a cracked stream comprising a sulfur-containing component and cracked hydrocarbons;
compressing the cracked stream to produce a pressurized cracked stream;
separating the pressurized cracked stream to produce a pressurized vapor stream comprising C4−
hydrocarbons and a liquid hydrocarbon stream comprising C3+ hydrocarbons;
separating the liquid hydrocarbon stream to produce a first liquid absorption stream comprising C5+ hydrocarbons and a C4−
hydrocarbon stream;
absorbing C3+ hydrocarbons from the pressurized vapor stream through liquid-vapor phase absorption using the first liquid absorption stream; and
removing the sulfur-containing component prior to absorbing C3+ hydrocarbons from the pressurized vapor stream.
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Accused Products
Abstract
Hydrocarbon processing apparatuses and methods of refining hydrocarbons are provided herein. In an embodiment, a method of refining hydrocarbons includes providing a cracked stream that includes a sulfur-containing component and cracked hydrocarbons. The cracked stream is compressed to produce a pressurized cracked stream. The pressurized cracked stream is separated to produce a pressurized vapor stream and a liquid hydrocarbon stream. The pressurized vapor stream includes C4− hydrocarbons and the liquid hydrocarbon stream includes C3+ hydrocarbons. The liquid hydrocarbon stream is separated to produce a first liquid absorption stream that includes C5+ hydrocarbons and a C4− hydrocarbon stream. C3+ hydrocarbons are absorbed from the pressurized vapor stream through liquid-vapor phase absorption using the first liquid absorption stream. The sulfur-containing component is removed prior to absorbing C3+ hydrocarbons from the pressurized vapor stream.
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Citations
20 Claims
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1. A method of refining hydrocarbons, wherein the method comprises:
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providing a cracked stream comprising a sulfur-containing component and cracked hydrocarbons; compressing the cracked stream to produce a pressurized cracked stream; separating the pressurized cracked stream to produce a pressurized vapor stream comprising C4−
hydrocarbons and a liquid hydrocarbon stream comprising C3+ hydrocarbons;separating the liquid hydrocarbon stream to produce a first liquid absorption stream comprising C5+ hydrocarbons and a C4−
hydrocarbon stream;absorbing C3+ hydrocarbons from the pressurized vapor stream through liquid-vapor phase absorption using the first liquid absorption stream; and removing the sulfur-containing component prior to absorbing C3+ hydrocarbons from the pressurized vapor stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of refining hydrocarbons, wherein the method comprises:
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cracking a hydrocarbon stream comprising a sulfur-containing component in a fluid catalytic cracking stage to produce a cracked stream comprising the sulfur-containing component and cracked hydrocarbons; compressing the cracked stream to produce a pressurized cracked stream; separating the pressurized cracked stream in a pressurized separation stage to produce a pressurized vapor stream comprising C4−
hydrocarbons and a liquid hydrocarbon stream comprising C3+ hydrocarbons and the sulfur-containing component;fractionating the liquid hydrocarbon stream to produce an intermediate C3+ stream comprising C3+ hydrocarbons and a recovered C3−
vapor stream comprising C3−
hydrocarbons and the sulfur-containing component;removing the sulfur-containing component from the recovered C3−
vapor stream to produce a purified C3−
vapor stream;recycling the purified C3−
vapor stream to the pressurized separation stage; andabsorbing C3+ hydrocarbons from the pressurized vapor stream through liquid-vapor phase absorption using a liquid absorption stream.
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17. A hydrocarbon processing apparatus comprising:
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a fluid catalytic cracking unit having the capacity to catalytically crack a hydrocarbon stream comprising a sulfur-containing component and to produce an offgas stream comprising the sulfur-containing component and cracked hydrocarbons; a compressor in fluid communication with the fluid catalytic cracking unit and having the capacity to produce a pressurized cracked stream; a high pressure receiver in fluid communication with the compressor and having the capacity to separate the pressurized cracked stream into a pressurized vapor stream and a liquid hydrocarbon stream; a debutanizer column in fluid communication with the high pressure receiver and having the capacity to produce a first liquid absorption stream; a liquid-vapor phase separator in fluid communication with the debutanizer column, wherein the liquid-vapor phase separator is configured to contact the pressurized vapor stream and the first liquid absorption stream therein; and a contaminant removal unit disposed upstream of the liquid-vapor phase separator and downstream of the fluid catalytic cracking unit, wherein the contaminant removal unit is configured to remove the sulfur-containing component. - View Dependent Claims (18, 19, 20)
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Specification