CA2571620A1 - System and method for separating biomass from media in a fluidized bed reactor - Google Patents

System and method for separating biomass from media in a fluidized bed reactor Download PDF

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Publication number
CA2571620A1
CA2571620A1 CA002571620A CA2571620A CA2571620A1 CA 2571620 A1 CA2571620 A1 CA 2571620A1 CA 002571620 A CA002571620 A CA 002571620A CA 2571620 A CA2571620 A CA 2571620A CA 2571620 A1 CA2571620 A1 CA 2571620A1
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CA
Canada
Prior art keywords
annular passageway
biomass
lift
aqueous suspension
inner member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002571620A
Other languages
French (fr)
Other versions
CA2571620C (en
Inventor
Samuel Frisch
Robert E. Loudon
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Shaw Intellectual Property Holdings Inc
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2571620A1 publication Critical patent/CA2571620A1/en
Application granted granted Critical
Publication of CA2571620C publication Critical patent/CA2571620C/en
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Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M25/00—Means for supporting, enclosing or fixing the microorganisms, e.g. immunocoatings
    • C12M25/16—Particles; Beads; Granular material; Encapsulation
    • C12M25/20—Fluidized bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B01D15/02—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor with moving adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M1/00—Apparatus for enzymology or microbiology
    • C12M1/04—Apparatus for enzymology or microbiology with gas introduction means
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M1/00—Apparatus for enzymology or microbiology
    • C12M1/40—Apparatus specially designed for the use of free, immobilised, or carrier-bound enzymes, e.g. apparatus containing a fluidised bed of immobilised enzymes
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
    • C12M29/08—Air lift
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
    • C12M47/02—Separating microorganisms from the culture medium; Concentration of biomass

Abstract

A system is provided for separating biomass from media in a fluidized bed reactor containing an aqueous suspension of biomass and media. A lift, configured to extend within the reactor, has an inlet for receiving aqueous suspension and an outlet spaced from the inlet for delivering the aqueous suspension from the lift. A shield is disposed about the lift. The system further includes a biomass separator body, including an inner member disposed about the shield and an outer member. Three annular passageways are defined between the lift, the shield, the inner member, and the outer member, and are positioned to receive aqueous suspension from each other. A barrier extends between the inner member and the outer member at an end portion of the third annular passageway. The barrier of the biomass separator body is configured to direct biomass from the third annular passageway toward an excess biomass discharge.

Claims (20)

1. A system for separating biomass from media in a fluidized bed reactor containing an aqueous suspension of biomass and media, said system comprising:

a lift configured to extend within the reactor, said lift having an inlet for receiving aqueous suspension and an outlet spaced from said inlet for delivering the aqueous suspension from said lift;

a gas inlet positioned to feed gas into said lift for urging the aqueous suspension toward said outlet of said lift;

a shield disposed about said lift and defining a first annular passageway between said shield and said lift, said first annular passageway being positioned to receive aqueous suspension from said outlet of said lift; and a biomass separator body comprising, an inner member disposed about said shield, a second annular passageway being defined between said inner member of said biomass separator body and said shield, said second annular passageway being positioned to receive aqueous suspension from said first annular passageway, an outer member, a third annular passageway being defined between said inner member and said outer member, said third annular passageway being positioned to receive aqueous suspension from said second annular passageway, a barrier extending between said inner member and said outer member at an end portion of said third annular passageway, and an excess biomass discharge in fluid communication with said third annular passageway;

wherein said barrier of said biomass separator body is configured to direct biomass from said third annular passageway toward said excess biomass discharge.
2. The system of claim 1 further comprising a deflector positioned to deflect media exiting said inner member.
3. The system of claim 2, wherein said deflector is angled with respect to a longitudinal axis of said inner member to direct media away from said inlet of said lift.
4. The system of claim 2, wherein said deflector is oriented to promote movement of aqueous suspension in the fluidized bed reactor.
5. The system of claim 1, wherein the position of said biomass separator body is adjustable relative to said lift.
6. The system of claim 1, wherein said barrier is downwardly sloped to reduce buildup of biomass within said third annular passageway.
7. The system of claim 1, wherein an end portion of said third annular passageway is open for ease of cleaning.
8. The system of claim 1, wherein said excess biomass discharge is positioned on said inner member of said biomass separator body.
9. The system of claim 1, wherein said excess biomass discharge is positioned on said outer member of said biomass separator body.
10. A fluidized bed reactor comprising:

a reactor vessel configured to contain an aqueous suspension of biomass and media;

a lift configured to extend within said reactor vessel, said lift having an inlet for receiving aqueous suspension and an outlet spaced from said inlet for delivering the aqueous suspension from said lift;

a gas inlet positioned to feed gas into said lift for urging the aqueous suspension toward said outlet of said lift;

a shield disposed about said lift and defining a first annular passageway between said shield and said lift, said first annular passageway being positioned to receive aqueous suspension from said outlet of said lift; and a biomass separator body comprising, an inner member disposed about said shield, a second annular passageway being defined between said inner member of said biomass separator body and said shield, said second annular passageway being positioned to receive aqueous suspension from said first annular passageway, an outer member, a third annular passageway being defined between said inner member and said outer member, said third annular passageway being positioned to receive aqueous suspension from said second annular passageway, a barrier extending between said inner member and said outer member at an end portion of said third annular passageway, and an excess biomass discharge in fluid communication with said third annular passageway, said excess biomass discharge being connected to deliver excess biomass from said reactor vessel;

wherein said barrier of said biomass separator body is configured to direct biomass from said third annular passageway toward said excess biomass discharge.
11. The fluidized bed reactor of claim 10 further comprising a deflector positioned to deflect media exiting said inner member.
12. The fluidized bed reactor of claim 11, wherein said deflector is angled with respect to a longitudinal axis of said inner member to direct media away from said inlet of said lift.
13. The fluidized bed reactor of claim 11, wherein said deflector is oriented to promote movement of aqueous suspension in said reactor vessel.
14. A method for separating biomass from media in a fluidized bed reactor containing an aqueous suspension of biomass and media, said method comprising the steps of:

feeding gas into a lift extending within the fluidized bed reactor, thereby urging aqueous suspension from an inlet of the lift toward an outlet of the lift;

directing aqueous suspension from the outlet of the lift to a first annular passageway;

flowing aqueous suspension from the first annular passageway to a second annular passageway, thereby separating media from biomass;

redirecting aqueous suspension from the second annular passageway to a third annular passageway; and discharging biomass from the third annular passageway.
15. The method of claim 14, wherein said step of directing aqueous suspension from the outlet of the lift to a first annular passageway comprises maintaining a shield about the lift to define the first annular passageway.
16. The method of claim 14, wherein said step of flowing aqueous suspension from the first annular passageway to a second annular passageway comprises maintaining an inner member of a separator body about the shield to define the second annular passageway.
17. The method of claim 14,wherein said step of redirecting aqueous suspension from the second annular passageway to a third annular passageway comprises maintaining an outer member of a separator body about an inner member of the separator body to define the third annular passageway.
18. The method of claim 14, wherein said step of discharging biomass from the third annular passageway comprises discharging biomass from an interior of the third annular passageway.
19. The method of claim 14, wherein said step of discharging biomass from the third annular passageway comprises discharging biomass from an exterior of the third annular passageway.
20. The method of claim 14, further comprising the step of deflecting media exiting from the first or second annular passageway away from the inlet of the lift.
CA2571620A 2004-06-25 2005-06-24 System and method for separating biomass from media in a fluidized bed reactor Active CA2571620C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/877,338 2004-06-25
US10/877,338 US7611890B2 (en) 2004-06-25 2004-06-25 System and method for separating biomass from media in a fluidized bed reactor
PCT/US2005/022562 WO2006012332A2 (en) 2004-06-25 2005-06-24 System and method for separating biomass from media in a fluidized bed reactor

Publications (2)

Publication Number Publication Date
CA2571620A1 true CA2571620A1 (en) 2006-02-02
CA2571620C CA2571620C (en) 2012-10-02

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Family Applications (1)

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CA2571620A Active CA2571620C (en) 2004-06-25 2005-06-24 System and method for separating biomass from media in a fluidized bed reactor

Country Status (4)

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US (2) US7611890B2 (en)
CA (1) CA2571620C (en)
GB (1) GB2429973B (en)
WO (1) WO2006012332A2 (en)

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Also Published As

Publication number Publication date
WO2006012332A2 (en) 2006-02-02
US7572626B2 (en) 2009-08-11
US20050287659A1 (en) 2005-12-29
US20080213137A1 (en) 2008-09-04
GB2429973A (en) 2007-03-14
GB2429973B (en) 2010-03-17
GB0625824D0 (en) 2007-02-07
US7611890B2 (en) 2009-11-03
CA2571620C (en) 2012-10-02
WO2006012332A3 (en) 2007-02-08

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