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公开(公告)号：EP0573626A4
公开(公告)日：1994-07-13
申请号：EP92924495
申请日：1992-12-02
Applicant: TECH RESOURCES PTY LTD
Inventor： BATTERHAM ROBIN JOHN , HOFFMANN WARWICK ARTHUR , KATSIKAROUS NICHOLAS
CPC classification number: B01F3/0876 , B01F3/04503 , B01F3/04609 , B01F5/0428 , B01F5/106 , B01F7/00341 , B01F2003/0468
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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公开(公告)号：EP0606432A4
公开(公告)日：1994-11-30
申请号：EP93915520
申请日：1993-07-09
Applicant: TECH RESOURCES PTY LTD
CPC classification number: B01J19/1875 , B01F3/0451 , B01F3/04609 , B01F5/0413 , B01F5/0428 , B01F5/0498 , B01F15/0201 , B01F2003/04865 , B01J8/1854 , Y10S261/75
Abstract: A reactor for introducing a 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 upwards 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 (29, 49) 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.
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公开(公告)号：BR9205582A
公开(公告)日：1994-08-02
申请号：BR9205582
申请日：1992-12-02
Applicant: TECH RESOURCES PTY LTD
Inventor： BATTERHAM ROBIN JOHN , HOFFMANN WARWICK ARTHUR , KATSIKAROS NICHOLAS
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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公开(公告)号：CA2116248C
公开(公告)日：2004-11-09
申请号：CA2116248
申请日：1993-07-09
Applicant: TECH RESOURCES PTY LTD
Abstract: A reactor for introducing a 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 upwards 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 (29, 49) 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.
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公开(公告)号：DE69218181T2
公开(公告)日：1997-06-19
申请号：DE69218181
申请日：1992-12-02
Applicant: TECH RESOURCES PTY LTD
Inventor： BATTERHAM ROBIN , HOFFMANN WARWICK ARTHUR , KATSIKAROUS NICHOLAS
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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Patent Agency Ranking
公开(公告)号：DE4224911A1
公开(公告)日：1994-01-13
申请号：DE4224911
申请日：1992-07-28
Applicant: TECH RESOURCES PTY LTD
Abstract: A new aerator for perfusing a fluid with a gas has an inlet, an outlet and a central throat area with reduced cross-section in which the fluid pressure is reduced. The throat area is of elongated shape and is provided with a means for introducing the required gas. Also claimed is the procedure for aerating a fluid using this aerator. Gas is introduced via a row of nozzles or openings (1) or a porous membrane extending around the circumference of the throat area. A number of similar aerators may be used with a common fluid inlet and/or outlet. The flow of fluid is regulated to pass vertically through the throat area at a rate of at least 100 l/min. and preferably more than 200 l/min, and at a velocity of 1 to 10 m/s, and pref. 4 to 10 m/s. The fluid may in particular be an aq. extn. liq. and the gas air. The volumetric flow ratio of air to liquid is at least 0.2, and pref. more than 0.5, and esp. more than 0.7. The gas is introduced under the effect of natrual aspiration or under a slight pressure. USE/ADVANTAGE - Esp. for providing the required oxygen for the bacterial agents in biological extn. liqs. used for the extn. of ores. The aerator is economical to produce and to operate and achieves a high rate of aeration, thus reducing the cost of the aeration process.
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公开(公告)号：FI933415A
公开(公告)日：1993-09-30
申请号：FI933415
申请日：1993-07-30
Applicant: TECH RESOURCES PTY LTD
Inventor： BATTERHAM ROBIN JOHN , HOFFMANN WARWICK ARTHUR , KATSIKAROS NICHOLAS
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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公开(公告)号：DE4224912A1
公开(公告)日：1993-06-03
申请号：DE4224912
申请日：1992-07-28
Applicant: TECH RESOURCES PTY LTD
Inventor： BATTERHAM ROBIN JOHN , HOFFMANN WARWICK ARTHUR , KATSIKAROUS NICHOLAS
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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公开(公告)号：AU679090B2
公开(公告)日：1997-06-19
申请号：AU7222994
申请日：1994-07-15
Applicant: TECH RESOURCES PTY LTD
Inventor： MCALLISTER PETER JAMES , ROY IAN , HOFFMANN WARWICK ARTHUR , BEAUPEURT SUSAN MERYL
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公开(公告)号：DE69218181D1
公开(公告)日：1997-04-17
申请号：DE69218181
申请日：1992-12-02
Applicant: TECH RESOURCES PTY LTD
Inventor： BATTERHAM ROBIN , HOFFMANN WARWICK ARTHUR , KATSIKAROUS NICHOLAS
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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