[특허]Magnetic separation combined with dynamic settling for fischer-tropsch processes

Res USA, LLC

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특허 상세정보

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Magnetic separation combined with dynamic settling for fischer-tropsch processes

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-021/02 B03C-001/30 B01J-008/00 B01J-008/22 B03C-001/28 B01D-021/00
미국특허분류(USC)	210/695; 210/223; 210/801; 210/803; 210/804; 210/521; 210/532.1; 518/709; 518/728
출원번호	US-0206438 (2008-09-08)
등록번호	US-8871096 (2014-10-28)
발명자 / 주소	Mohedas, Sergio
출원인 / 주소	Res USA, LLC
대리인 / 주소	Westby, Timothy S.
인용정보	피인용 횟수 : 0 인용 특허 : 13

초록
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A system for separating particulate from a fluid stream having an inlet solids content, the system comprising: a magnetic dynamic settling vessel comprising at least one magnetic field inside the vessel and/or one magnetized component; at least one inlet for introduction of the fluid stream having a starting solids content; at least one exit for a stream comprising a solids content not greater than the inlet solids content; at least one exit for a fluid stream comprising a solids content not less than the inlet solids content; and a vertical feed conduit extending at least 70% of the distance from the at least one fluid inlet to the at least one exit for a fluid stream comprising a solids content not less than the inlet solids content. A method for separating particulate from a fluid stream having an inlet solids content is also provided.

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1. A method for separating solid particles from a fluid stream having an inlet solids content, the method comprising: introducing the fluid stream into a magnetic dynamic settler vessel, wherein the inlet solids content is greater than 5000 ppm by weight, and wherein the magnetic dynamic settler vessel comprises at least one magnetic field within the vessel, at least one fluid inlet for introduction of the fluid stream having the inlet solids content, at least one exit for a liquid product stream comprising a solids content less than the inlet solids content, at least one exit for a fluid stream comprising a solids content greater than the inlet solids content, and a vertical feed conduit extending at least 70% of the distance from the at least one fluid inlet to the at least one exit for a fluid stream comprising a solids content greater than the inlet solids content, wherein the magnetic dynamic settler vessel comprises no other interior physical component and wherein the at least one magnetic field is directed such that the solids agglomerate substantially vertically;removing from the magnetic dynamic settler vessel at least one liquid product stream comprising a solids content less than the inlet solids content; andcontinuously removing from the magnetic dynamic settler vessel at least one stream comprising a solids content greater than the inlet solids content. 2. The method of claim 1 wherein the at least one liquid product stream comprising a solids content less than the inlet solids content comprises a solids content less than 2500 ppm by weight. 3. The method of claim 1 wherein the at least one liquid product stream comprising a solids content less than the inlet solids content comprises a solids content less than 1000 ppm by weight. 4. The method of claim 1 wherein the magnetic dynamic settler vessel has a liquid linear upward velocity of greater than 15 cm/h. 5. The method of claim 4 wherein the magnetic dynamic settler vessel has a liquid linear upward velocity of greater than 45 cm/h. 6. The method of claim 5 wherein the magnetic dynamic settler vessel has a liquid linear upward velocity of greater than 90 cm/h. 7. The method of claim 1 wherein the solid particles comprise Fischer-Tropsch catalyst particles. 8. The method of claim 7 wherein the Fischer-Tropsch catalyst particles comprise at least one metal selected from the group consisting of iron, cobalt, or a combination thereof. 9. The method of claim 8 wherein the majority of the catalyst particles have a particle size in the range of from about 10 microns to about 200 microns. 10. The method of claim 9 wherein the majority of the catalyst particles have a particle size in the range of from about 20 microns to about 150 microns. 11. The method of claim 1 wherein the magnetic dynamic settler vessel comprises an upper portion comprising vertical external walls and a narrower lower portion comprising inclined external walls. 12. The method of claim 1 further comprising introducing the stream comprising a solids content greater than the inlet solids content into a second dynamic settler. 13. The method of claim 12 further comprising removing from the second dynamic settler at least one secondary dynamic settler concentrated slurry stream and at least one secondary dynamic settler liquid product stream. 14. The method of claim 13 further comprising introducing the at least one secondary dynamic settler concentrated slurry stream into a Fischer-Tropsch reactor. 15. The method of claim 13 further comprising introducing the liquid product stream comprising a solids content less than the inlet solids content, and the at least one secondary dynamic settler liquid product stream into a secondary separation system. 16. The method of claim 15 wherein the secondary separation system comprises an apparatus selected from cross-flow filtration devices, press filters, sand filters, other filtration devices, electrostatic separators, centrifugal separators, hydro-cyclones, high gradient magnetic separation devices, and combinations thereof. 17. The method of claim 1 wherein the fluid stream having the inlet solids content comprises effluent removed from a multi-phase catalytic reactor, said effluent comprising solid magnetic catalyst particles. 18. The method of claim 17 wherein the multi-phase catalytic reactor comprises a Fischer-Tropsch reactor. 19. The method of claim 18 wherein the solid magnetic catalyst particles are selected from the group consisting of iron-based catalyst particles, cobalt-based catalyst particles and combinations thereof. 20. The method of claim 17 further comprising removing vapor from the effluent via a vapor/liquid separator to produce the fluid stream having the inlet solids content. 21. The method of claim 17 further comprising removing at least a portion of the solid particles from the effluent upstream of the magnetic dynamic settler vessel. 22. The method of claim 1 further comprising introducing the at least one stream comprising a solids content greater than the inlet solids content to a Fischer-Tropsch reactor. 23. A method for separating solid particles from a fluid stream having an inlet solids content, the method comprising: introducing the fluid stream into a magnetic dynamic settler vessel, the magnetic dynamic settler vessel comprising an upper portion comprising a vertical wall, and a narrower lower portion comprising an inclined wall, at least one magnetic field within the vessel, at least one fluid inlet for introduction of the fluid stream having the inlet solids content, at least one exit for a liquid product stream comprising a solids content less than the inlet solids content, at least one exit for a fluid stream comprising a solids content greater than the inlet solids content, and a vertical feed conduit extending at least 70% of the distance from the at least one fluid inlet to the at least one exit for a fluid stream comprising a solids content greater than the inlet solids content, wherein the magnetic dynamic settler vessel comprises no substantially magnetized interior physical component, wherein the at least one magnetic field is directed such that the solids agglomerate substantially vertically, and wherein the feed conduit is at one side of the magnetic dynamic settler vessel;removing from the magnetic dynamic settler vessel at least one liquid product stream comprising a solids content less than the inlet solids content; andcontinuously removing from the magnetic dynamic settler vessel at least one stream comprising a solids content greater than the inlet solids content. 24. The method of claim 23 wherein the inlet solids content is greater than 5000 ppm by weight. 25. The method of claim 23 wherein the at least one liquid product stream comprising a solids content less than the inlet solids content comprises a solids content less than 2500 ppm by weight. 26. The method of claim 23 wherein the at least one liquid product stream comprising a solids content less than the inlet solids content comprises a solids content less than 1000 ppm by weight. 27. The method of claim 23 wherein the magnetic dynamic settler vessel has a liquid linear upward velocity of greater than 90 cm/h. 28. The method of claim 23 wherein the solid particles comprise Fischer-Tropsch catalyst particles. 29. The method of claim 23 further comprising introducing the stream comprising a solids content greater than the inlet solids content into a second dynamic settler. 30. The method of claim 29 further comprising removing from the second dynamic settler at least one secondary dynamic settler concentrated slurry stream and at least one secondary dynamic settler liquid product stream. 31. The method of claim 30 further comprising introducing the at least one secondary dynamic settler concentrated slurry stream into a Fischer-Tropsch reactor. 32. The method of claim 30 further comprising introducing the liquid product stream comprising a solids content less than the inlet solids content and the at least one secondary dynamic settler liquid product stream into a secondary separation system. 33. The method of claim 23 wherein the fluid stream having the inlet solids content comprises effluent removed from a multi-phase catalytic reactor, said effluent comprising solid magnetic catalyst particles. 34. The method of claim 33 wherein the multi-phase catalytic reactor comprises a Fischer-Tropsch reactor. 35. The method of claim 23 further comprising introducing the at least one stream comprising a solids content greater than the inlet solids content to a Fischer-Tropsch reactor.

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Magnetic separation combined with dynamic settling for fischer-tropsch processes

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Magnetic separation combined with dynamic settling for fischer-tropsch processes

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