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    21.
    发明专利
    未知

    公开(公告)号：FI107237B

    公开(公告)日：2001-06-29

    申请号：FI933415

    申请日：1993-07-30

    Applicant: TECH RESOURCES PTY LTD

    Inventor： BATTERHAM ROBIN JOHN ,  HOFFMANN WARWICK ARTHUR ,  KATSIKAROS NICHOLAS

    IPC: B01F3/04 ,  B01F3/08 ,  B01F5/04 ,  B01F5/10 ,  B01F7/00 ,  C02F3/14 ,  C02F3/22 ,  B01F7/16

    Abstract: A reactor for aerating a fluid with a gas comprises a mixing tank (12) for the fluid and a centrally located vertical draft tube (13) submerged in the fluid to divide the mixing tank (12) into an inner chamber (21) and an outer chamber (23). The reactor further comprises a motor driven axial flow impeller (14) located in the draft tube (13) for circulating fluid downwardly through the inner chamber (21) and upwardly through the outer chamber (23). The reactor further comprises an external circuit for withdrawing a portion of the fluid from the mixing tank (12), aerating the fluid, and returning the aerated fluid to the mixing tank (12). The aerator is in the form of a venturi device (17).

    22.
    发明专利
    未知

    公开(公告)号：AT149876T

    公开(公告)日：1997-03-15

    申请号：AT93915520

    申请日：1993-07-09

    Applicant: TECH RESOURCES PTY LTD

    Inventor： BATTERHAM ROBIN JOHN ,  HOFFMANN WARWICK ARTHUR ,  CONOCHIE DAVID STEWART

    IPC: B01F3/04 ,  B01F5/04 ,  B01F15/02 ,  B01J8/18 ,  B01J10/00 ,  B01J19/18 ,  C02F3/14

    Abstract: PCT No. PCT/AU93/00340 Sec. 371 Date Mar. 16, 1994 Sec. 102(e) Date Mar. 16, 1994 PCT Filed Jul. 9, 1993 PCT Pub. No. WO94/01210 PCT Pub. Date Jan. 20, 1994.A reactor for introducing gas into a fluid comprises a mixing tank (12, 43) for the fluid and a partition means (13,45) for dividing the tank into at least two chambers (21, 89) and (23, 91). The reactor further comprises a first pump means (14, 47) located in one of the chambers for circulating the fluid downwards in one chamber and then upward in the other chamber and an aerator assembly (29, 49) for aerating a sidestream of the fluid and introducing the aerated fluid into the tank for mixing the aerated fluid with the circulating fluid in the tank. The aerator assembly comprises a bank of venturi aerators (38, 57) each having an aerator inlet; an aerator outlet; and a constriction intermediate the aerator inlet and the aerator outlet for creating a region of reduced pressure in the fluid, the constriction being elongate in a section transverse to the direction of flow of the fluid through the constriction; and a means for introducing the gas into the constriction to aerate the fluid.

    23.
    发明专利
    未知

    公开(公告)号：AT149875T

    公开(公告)日：1997-03-15

    申请号：AT92924495

    申请日：1992-12-02

    Applicant: TECH RESOURCES PTY LTD

    Inventor： BATTERHAM ROBIN JOHN ,  HOFFMANN WARWICK ARTHUR ,  KATSIKAROUS NICHOLAS

    IPC: B01F3/04 ,  B01F3/08 ,  B01F5/04 ,  B01F5/10 ,  B01F7/00 ,  C02F3/14 ,  C02F3/22

    Abstract: A reactor for aerating a fluid with a gas comprises a mixing tank (12) for the fluid and a centrally located vertical draft tube (13) submerged in the fluid to divide the mixing tank (12) into an inner chamber (21) and an outer chamber (23). The reactor further comprises a motor driven axial flow impeller (14) located in the draft tube (13) for circulating fluid downwardly through the inner chamber (21) and upwardly through the outer chamber (23). The reactor further comprises an external circuit for withdrawing a portion of the fluid from the mixing tank (12), aerating the fluid, and returning the aerated fluid to the mixing tank (12). The aerator is in the form of a venturi device (17).

    A reactor
    24.
    发明专利
    A reactor 未知

    公开(公告)号：ZA929334B

    公开(公告)日：1996-03-28

    申请号：ZA929334

    申请日：1992-12-02

    Applicant: TECH RESOURCES PTY LTD

    Inventor： BATTERHAM ROBIN JOHN ,  HOFFMANN WARWICK ARTHUR ,  KATSIKAROUS NICHOLAS

    IPC: B01F3/04 ,  B01F3/08 ,  B01F5/04 ,  B01F5/10 ,  B01F7/00 ,  C02F3/14 ,  C02F3/22 ,  B01J

    Abstract: A reactor for aerating a fluid with a gas comprises a mixing tank (12) for the fluid and a centrally located vertical draft tube (13) submerged in the fluid to divide the mixing tank (12) into an inner chamber (21) and an outer chamber (23). The reactor further comprises a motor driven axial flow impeller (14) located in the draft tube (13) for circulating fluid downwardly through the inner chamber (21) and upwardly through the outer chamber (23). The reactor further comprises an external circuit for withdrawing a portion of the fluid from the mixing tank (12), aerating the fluid, and returning the aerated fluid to the mixing tank (12). The aerator is in the form of a venturi device (17).

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