[미국특허]
Component separations in polymerization
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-007/11
C07C-007/04
C07C-007/156
C08J-011/04
B01D-053/14
C08F-006/00
C08F-110/02
C08F-010/02
출원번호
US-0725991
(2015-05-29)
등록번호
US-9284430
(2016-03-15)
발명자
/ 주소
Kufeld, Scott E.
Hottovy, John D.
Chang, Ai-fu
출원인 / 주소
Chevron Phillips Chemical Company LP
대리인 / 주소
Conley Rose, P.C.
인용정보
피인용 횟수 :
2인용 특허 :
27
초록▼
A process for component separation in a polymer production system, comprising separating a polymerization product stream into a gas stream and a polymer stream, wherein the gas stream comprises ethane and unreacted ethylene, distilling the gas stream into a light hydrocarbon stream, wherein the ligh
A process for component separation in a polymer production system, comprising separating a polymerization product stream into a gas stream and a polymer stream, wherein the gas stream comprises ethane and unreacted ethylene, distilling the gas stream into a light hydrocarbon stream, wherein the light hydrocarbon stream comprises ethane and unreacted ethylene, contacting the light hydrocarbon stream with an absorption solvent system, wherein at least a portion of the unreacted ethylene from the light hydrocarbon stream is absorbed by the absorption solvent system, and recovering a waste gas stream from the absorption solvent system, wherein the waste gas stream comprises ethane, hydrogen, or combinations thereof.
대표청구항▼
1. A process for component separation in a polymer production system, comprising: separating a polymerization product stream into a gas stream and a polymer stream, wherein the gas stream comprises ethane, unreacted ethylene, and unreacted hexane;distilling the gas stream, in singe distillation colu
1. A process for component separation in a polymer production system, comprising: separating a polymerization product stream into a gas stream and a polymer stream, wherein the gas stream comprises ethane, unreacted ethylene, and unreacted hexane;distilling the gas stream, in singe distillation column, into a light hydrocarbon stream and a bottoms stream, wherein the light hydrocarbon stream comprises ethane and unreacted ethylene, wherein the bottoms stream comprises isobutane, and wherein the bottoms stream is substantially olefin-free;contacting the light hydrocarbon stream with an absorption solvent system, wherein at least a portion of the unreacted ethylene from the light hydrocarbon stream is absorbed by the absorption solvent system; andrecovering a waste gas stream from the absorption solvent system, wherein the waste gas stream comprises ethane, hydrogen, or combinations thereof. 2. The process of claim 1, further comprising: regenerating the absorption solvent system to yield recovered ethylene. 3. The process of claim 1, further comprising: processing the waste gas stream in a processing device. 4. The process of claim 3, wherein the processing device comprises a cracker, catalytic cracker, scrubber, converter, treater, dehydrogenator, deoxygenator, flare or combinations thereof. 5. The process of claim 1, wherein the absorption solvent system is configured to operate at a temperature in a range of from about 4.4° C. (40° F.) to about 43.3° C. (110° F.). 6. The process of claim 1, wherein the absorption solvent system comprises copper chloride, aniline, and N-methylpyrrolidone. 7. The process of claim 1, wherein the light hydrocarbon stream further comprises hydrogen. 8. The process of claim 1, further comprising: removing oxygen from the gas stream before distilling the gas stream. 9. The process of claim 1, wherein ethylene is present in the light hydrocarbon stream in an amount of from about 50% to about 99% by total weight of the light hydrocarbon stream. 10. A process for component separation in a polymer production system, comprising: separating a polymerization product stream into a gas stream and a polymer stream, wherein the gas stream comprises ethane, unreacted ethylene, and one or more of oxygen, oxygenated compounds, and oxidizing compounds;distilling the gas stream into an intermediate hydrocarbon stream, a side stream, and a first bottoms stream, wherein the intermediate hydrocarbon stream comprises ethane, ethylene, and isobutane, wherein the side stream comprises hexane, and wherein the first bottoms stream comprises hexane;distilling the intermediate hydrocarbon stream into a light hydrocarbon stream and a second bottoms stream, wherein the light hydrocarbon stream comprises ethane and ethylene;contacting the light hydrocarbon stream with an absorption solvent system, wherein at least a portion of the unreacted ethylene from the light hydrocarbon stream is absorbed by the absorption solvent system; andrecovering a waste gas stream from the absorption solvent system, wherein the waste gas stream comprises ethane, hydrogen, or combinations thereof. 11. The process of claim 10, further comprising: regenerating the absorption solvent system to yield recovered ethylene. 12. The process of claim 10, further comprising: distilling the intermediate hydrocarbon stream into a side stream comprising isobutane, wherein the second bottoms stream comprises isobutane, wherein the second bottoms stream is substantially free of olefins. 13. The process of claim 10, further comprising: removing oxygen from the gas stream before distilling the gas stream. 14. The process of claim 13, wherein after removing oxygen, the gas stream is substantially free of oxygen. 15. The process of claim 10, wherein hexene is present in the side stream in an amount of from about 20% to about 98% by total weight of the side stream. 16. The process of claim 10, wherein C4 and lighter hydrocarbons and gases are present in the intermediate hydrocarbon stream in an amount of from about 80% to about 100% by total weight of the intermediate hydrocarbon stream. 17. The process of claim 10, wherein distilling the gas stream is performed at a temperature in a range of from about 20° C. (68° F.) to about 50° C. (122° F.). 18. The process of claim 10, wherein distilling the intermediate hydrocarbon stream is performed at a temperature in a range of from about 15° C. (59° F.) to about 233° C. (451.4° F.).
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