Process for producing aromatic hydrocarbon compounds and liquefied petroleum gas from hydrocarbon feedstock
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-015/12
C07C-004/18
C10G-035/06
C10G-047/00
출원번호
US-0989624
(2001-11-20)
우선권정보
KR-0071959 (2000-11-30)
발명자
/ 주소
Choi, Sun
Oh, Seung-Hoon
Kim, Yong-Seung
Lim, Beung-Soo
Seong, Kyeong-Hak
출원인 / 주소
SK Corporation
대리인 / 주소
Abelman, Frayne & Schwab
인용정보
피인용 횟수 :
29인용 특허 :
4
초록▼
Disclosed are a process for producing aromatic hydrocarbon compounds and liquefied petroleum gas (LPG) from a hydrocarbon feedstock having boiling points of 30-250° C. and a catalyst useful therefor. In the presence of said catalyst, aromatic components in the hydrocarbon feedstock are converted to
Disclosed are a process for producing aromatic hydrocarbon compounds and liquefied petroleum gas (LPG) from a hydrocarbon feedstock having boiling points of 30-250° C. and a catalyst useful therefor. In the presence of said catalyst, aromatic components in the hydrocarbon feedstock are converted to BTX-enriched components of liquid phase through hydrodealkylation and/or transalkylation, and non-aromatic components are converted to LPG-enriched gaseous materials through hydrocracking. The products of liquid phase may be separated as benzene, toluene, xylene, and C9or higher aromatic compounds, respectively according to their different boiling points, while LPG is separated from the gaseous products, in a distillation tower.
대표청구항▼
Disclosed are a process for producing aromatic hydrocarbon compounds and liquefied petroleum gas (LPG) from a hydrocarbon feedstock having boiling points of 30-250° C. and a catalyst useful therefor. In the presence of said catalyst, aromatic components in the hydrocarbon feedstock are converted to
Disclosed are a process for producing aromatic hydrocarbon compounds and liquefied petroleum gas (LPG) from a hydrocarbon feedstock having boiling points of 30-250° C. and a catalyst useful therefor. In the presence of said catalyst, aromatic components in the hydrocarbon feedstock are converted to BTX-enriched components of liquid phase through hydrodealkylation and/or transalkylation, and non-aromatic components are converted to LPG-enriched gaseous materials through hydrocracking. The products of liquid phase may be separated as benzene, toluene, xylene, and C9or higher aromatic compounds, respectively according to their different boiling points, while LPG is separated from the gaseous products, in a distillation tower. ocess according to claim 1, in which the treated catalyst further comprises at least one metal selected from the group formed by metals from groups IIIA and IVA of the periodic table. 11. A process according to claim 1, in which the crystal size of the zeolite with structure type EUO is less than 5 micrometres (μm). 12. A process according to claim 1, in which the EUO zeolite crystals are arranged in aggregates with a grain size such that the value of Dv,90 is 500 μm or less. 13. A process according to claim 1, in which the hydrodehydrogenating metal dispersion in the catalyst is in the range 50% to 100%. 14. A process according to claim 1, in which the macroscopic distribution coefficient of the hydrodehydrogenating metal is in the range 0.7 to 1.3. 15. A process according to claim 1, in which the strength of the catalysts is such that the bed crushing strength is more than 0.7 MPa. 16. A process according to claim 1, in which the catalyst comprises at least one group VIII metal selected from platinum and palladium. 17. A process according to claim 1, in which the temperature of step a) is in the range 400° C. to 500° C. 18. A process according to claim 17, in which during step b), the temperature is about 300° C. to 420° C., with a partial pressure of hydrogen of about 0.3 MPa to 1.5 MPa at a total pressure of about 0.45 MPa to 1.9 MPa and at a HSV of about 0.25 to 15 h-1,and the temperature of step a) is at least 20° C. higher than the temperature of step b). 19. A process according to claim 18, in which along with the feed to be isomerised, at least one compound with a boiling point of about 80° C. to 135° C. selected from the group formed by paraffins containing 8 carbon atoms, naphthenes containing 8 carbon atoms, toluene and benzene is introduced in the form of a fresh compound, in the form of a recycled compound or in the form of a mixture of fresh and recycled compounds. 20. A process for pretreating a catalyst used in an isomerization process of a feed that contains at least one aromatic compound having 8 carbon atoms, the process comprising the following steps: a) pretreating a catalyst containing at least one zeolite with structure type EUO and at least one hydrodehydrogenating metal while converting a hydrocarbon feed that contains at least one aromatic compound containing 8 carbon atoms, at a temperature whereby a catalyst comprising carbon is obtained for a period of 72 to 120 hours; b) then continuing converting the hydrocarbon feed with the catalyst at a temperature which is lower than the temperature applied in a), and at a pressure that is at least 0.3 MPa lower than the pressure applied in a). 21. A process for pretreating a catalyst used in an isomerization process of a feed that contains at least one aromatic compound having 8 carbon atoms in which the at least one aromatic compound containing 8 carbon atoms is selected from the group consisting of para-xylene, ortho-xylene, meta-xylene and ethylbenzene, the process comprising the following steps: a) pretreating a catalyst containing at least one zeolite with structure type EUO and at least one hydrodehydrogenating metal while converting a hydrocarbon feed that contains at least one aromatic compound containing 8 carbon atoms, at a temperature whereby a catalyst comprising carbon is obtained for a period of 72 to 120 hours; b) then continuing converting the hydrocarbon feed with the catalyst at a temperature which is lower than the temperature applied in a).
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이 특허에 인용된 특허 (4)
Asselin George F. (Mount Prospect IL), Aromatic hydrocarbon separation via solvent extraction.
Buchanan John Scott ; Cheng Jane C. ; Freyman David G. ; Haag Werner Otto ; Harandi Mohsen N. ; Mazzone Dominick N. ; Morrison Roger A. ; Rouleau Norman J. ; Sorensen Charles M. ; Timken Hye Kyung C., Hydrocarbon conversion.
Lai, Wenyih Frank; Elia, Christine N.; Rollman, Nicholas S.; Cutler, Joshua I., Catalyst compositions and their use in transalkylation of heavy aromatics to xylenes.
Choi,Sun; Oh,Seung Hoon; Sung,Kyoung Hak; Lee,Jong Hyung; Kang,Sin Choel; Kim,Yong Seung; Lim,Byeung Soo; Chang,Byoung Mu, Process for increasing production of benzene from hydrocarbon mixture.
Chen, Ye Mon; Iyer, Mahesh Venkataraman; Kapoun, Karel Martin; Lauritzen, Ann Marie; Madgavkar, Ajay Madhav, Process for the conversion of lower alkanes to aromatic hydrocarbons.
Kim, Cheol Joong; Ryu, Jae Wook; Seong, Kyeong Hak; Chang, Byoung Mu; Lim, Byeung Soo; Lee, Jong Hyung; Noh, Kyung Seok; Lee, Hyuck Jae; Park, Sam Ryong; Choi, Sun; Oh, Seung Hoon; Kim, Yong Seung; Kim, Gyung Rok, Process for the preparation of clean fuel and aromatics from hydrocarbon mixtures catalytic cracked on fluid bed.
Lee,Jong Hyung; Oh,Seung Hoon; Sung,Kyoung Hak; Choi,Sun; Kim,Yong Seung; Lim,Byeung Soo, Process of preparing aromatic hydrocarbons and liquefied petroleum gas from hydrocarbon mixture.
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