Pressure swing catalyst regeneration procedure for Fischer-Tropsh catalyst
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-027/00
B01J-020/34
출원번호
US-0035093
(2005-01-13)
발명자
/ 주소
Wright, Harold A.
Raje, Ajoy P.
Espinoza, Rafael L.
출원인 / 주소
ConocoPhillips Company
대리인 / 주소
Conley Rose P.C.
인용정보
피인용 횟수 :
10인용 특허 :
30
초록▼
A process is disclosed for regenerating a catalyst used in a process for synthesizing hydrocarbons. The synthesis process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an
A process is disclosed for regenerating a catalyst used in a process for synthesizing hydrocarbons. The synthesis process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. The regeneration process involves contacting a deactivated Fischer-Tropsch catalyst with a regeneration gas under regeneration-promoting conditions that include a pressure lower than the mean Fischer-Tropsch reaction pressure, for a period of time sufficient to reactivate the Fischer-Tropsch catalyst.
대표청구항▼
1. A process for producing hydrocarbons, comprising the steps of:(a) carrying out a Fischer-Tropsch synthesis, comprising contacting a feed stream comprising hydrogen and carbon monoxide with a cobalt-containing catalyst in a reaction zone maintained at conversion-promoting conditions comprising a m
1. A process for producing hydrocarbons, comprising the steps of:(a) carrying out a Fischer-Tropsch synthesis, comprising contacting a feed stream comprising hydrogen and carbon monoxide with a cobalt-containing catalyst in a reaction zone maintained at conversion-promoting conditions comprising a mean Fischer-Tropsch reaction pressure and a mean Fischer-Tropsch reaction temperature, said conversion-promoting conditions being effective to produce deactivated catalyst and an effluent stream comprising hydrocarbons, wherein the cobalt-containing catalyst has a pre-deactivation activity prior to the first time step (a) occurs, and wherein the activity of the catalyst drops to a deactivated level during step (a); (b) reducing the pressure to which at least a portion of the deactivated catalyst is subject to a regeneration pressure that is less than the mean Fischer-Tropsch reaction pressure by an amount between about 10 psig and about 300 psig; (c) carrying out a regeneration of said deactivated catalyst portion, comprising contacting the deactivated catalyst with a regeneration gas under regeneration-promoting conditions that include said regeneration pressure and a temperature that is between 0° C. and 150° C. higher than the mean temperature of the Fischer-Tropsch synthesis, for a period of time sufficient to reactivate the catalyst to a predetermined level of regenerated activity that equals or exceeds 50% of the pre-deactivation activity; (d) increasing the pressure to which the reactivated catalyst is subject to a desired Fischer-Tropsch reaction pressure after said sufficient period of time of regeneration; and (e) cycling through steps (a)-(d), depending on the status of the catalyst. 2. The process of claim 1 wherein the predetermined level of regenerated activity is at least 80% of the pre-deactivation activity.3. The process of claim 1 wherein the regeneration-promoting conditions comprise a temperature between about 200° C. and about 350° C.4. The process of claim 1 wherein the regeneration-promoting conditions comprise a temperature between about 250° C. and about 350° C.5. The process of claim 1 wherein the volume ratio of the regeneration gas to the catalyst is at least about 0.5 standard liter per hour per gram of catalyst.6. The process of claim 1 wherein the volume ratio of the regeneration gas to the catalyst is at least about 1 standard liter per hour per gram of catalyst.7. The process of claim 1 wherein the regeneration gas comprises a hydrogen-containing gas.8. The process of claim 1 wherein the regeneration gas comprises an oxygen-containing gas.9. The process of claim 1 wherein the regeneration gas comprises steam.10. The process of claim 1 wherein the catalyst comprises a support selected from the group consisting of silica, titania, titania/alumina, zirconia, alumina, fluorided metal oxides, borated alumina, aluminum borate, aluminum fluoride, and fluorided aluminas.11. The process of claim 1 wherein the catalyst further comprises a promoter selected from the group consisting of ruthenium, rhenium, boron, vanadium, phosphorous, manganese, alkali metals, Sc, Ti, Zr, Hf, Rh, Pd, Os, Ir, Pt, Re, Nb, Cu, Ag and Ta.12. The process according to claim 1 wherein step (c) is carried out in the reaction zone.13. The process according to claim 12, wherein the reaction zone is contained in a fixed bed reactor.14. The process according to claim 1 wherein step (b) further comprises heating said deactivated catalyst portion.15. The process according to claim 1 wherein step (d) further comprises cooling said reactivated catalyst portion.16. The process according to claim 1 wherein step (c) is carried out in a regeneration zone displaced from the reaction zone.17. The process of claim 1, wherein the reaction zone is contained in a slurry bed reactor.18. The process of claim 1 wherein the regeneration-promoting conditions comprise a pressure between about 0 psig and about 350 psig.19. The process of claim 1 wherein the regeneration-promoting conditions comprise a pressure between about 50 psig and about 150 psig.20. The process of claim 1 wherein the regeneration-promoting conditions comprise a pressure between about 50 psig and about 125 psig.21. The process of claim 1, wherein the pre-deactivation activity of the catalyst comprises an initial CO conversion, and further wherein the deactivated level is equal to or less than about 62% of the initial CO conversion.22. A process for producing hydrocarbons, comprising the steps of:(a) carrying out a Fischer Tropsch synthesis by contacting a feed stream comprising hydrogen and carbon monoxide with a cobalt-containing catalyst in a reaction zone within a synthesis reactor to produce an effluent stream comprising deactivated catalyst and heavy hydrocarbons, the reaction zone having a mean Fischer Tropsch reaction pressure, and wherein one or more heavy hydrocarbons are deposited on said deactivated catalyst; (b) passing at least a portion of the effluent stream from the synthesis reactor to a regeneration vessel; (c) reducing the pressure in the regeneration vessel to a pre-determined value to effect volatilization of at least a portion of heavy hydrocarbons; (d) contacting the cobalt-containing deactivated catalyst with a regeneration gas in the regeneration vessel under said reduced pressure, for a period of time sufficient to regenerate the catalyst; (e) increasing the pressure in the regeneration vessel after said sufficient period of time; and (f) passing at least a portion of the regenerated catalyst back to the synthesis reactor.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (30)
Nay Barry (Woking GB2) Smith Mark R. (Sunbury-on-Thames GB2) Telford Clive D. (Sunninghill GB2), Catalyst treatment.
Iglesia Enrique (Clinton NJ) Soled Stuart L. (Pittstown NJ) Fiato Rocco A. (Basking Ridge NJ), Cobalt-ruthenium catalysts for Fischer-Tropsch synthesis.
Iglesia Enrique (Clinton NJ) Soled Stuart L. (Pittstown NJ) Fiato Rocco A. (Basking Ridge NJ), Cobalt-ruthenium catalysts for Fischer-Tropsch synthesis and process for their preparation.
Chang Min ; Coulaloglou Constantine A. ; Hsu Edward C., Combination gas disengaging downcomer-rejuvenation tube for in-situ slurry catalyst rejuvenation (LAW541).
Pedrick Larry E. (Baton Rouge LA) Mauldin Charles H. (Baton Rouge LA) Behrmann William C. (Baton Rouge LA), Draft tube for catalyst rejuvenation and distribution.
Lee Wooyoung (Cherry Hill NJ) Yurchak Sergei (Media PA), Heat disposed in lower alcohols and derivatives conversion to gasoline hydrocarbons in a crystaline zeolite fluidized be.
Bauman Richard F. ; DeGeorge Charles W. ; Fiato Rocco A. ; Leviness Stephen C., Hydrocarbon synthesis using reactor tail gas for catalyst rejuvenation.
Clavenna LeRoy R. (Baton Rouge LA) Davis Stephen M. (Baton Rouge LA) Beasley Brent E. (Baton Rouge LA), Process for the reactivation of nickel-alumina catalysts.
Chang Min ; Coulaloglou Constantine A. ; Hsia Stephen Ju-Ming ; Mart Charles John, Slurry hydrocarbon synthesis process with multistage catalyst rejuvenation.
Behrmann William C. (Baton Rouge LA) Arcuri Kym B. (Baton Rouge LA) Mauldin Charles H. (Baton Rouge LA), Surface supported cobalt catalysts, process utilizing these catalysts for the preparation of hydrocarbons from synthesis.
Beuther Harold (Vero Beach FL) Kobylinski Thaddeus P. (Prospect PA) Kibby Charles L. (Gibsonia PA) Pannell Richard B. (Allison Park PA), Synthesis gas conversion using ruthenium-promoted cobalt catalyst.
Henkelmann, Jochem; Becker, Michael; Richter, Felix; Schäfer, Thomas, Method of regenerating ruthenium catalysts for the ring hydrogenation of phthalates.
Van Berge, Peter Jacobus; Visagie, Jacobus Lucas; Van De Loosdrecht, Jan; Van Der Walt, Tjaart Jurgens; Sollie, Johan Coenraad; Sollie Breur, legal representative, Sylvia; Veltman, Hans Marcel, Process for activating cobalt catalysts.
Khan, Moinuddin; Kurkjian, Andrew; Leviness, Stephen C.; Massie, Keith; Nighswander, John, Tracking feedstock production with micro scale gas-to-liquid units.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.