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公开(公告)号：NZ253976A
公开(公告)日：1997-01-29
申请号：NZ25397693
申请日：1993-07-09
Applicant: TECH RESOURCES PTY LTD
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.
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公开(公告)号：AU664871B2
公开(公告)日：1995-12-07
申请号：AU3076992
申请日：1992-12-02
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：NZ246021A
公开(公告)日：1995-07-26
申请号：NZ24602192
申请日：1992-12-02
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：AU7222994A
公开(公告)日：1995-02-13
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：AU4547393A
公开(公告)日：1994-01-31
申请号：AU4547393
申请日：1993-07-09
Applicant: TECH RESOURCES PTY LTD
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Patent Agency Ranking
公开(公告)号：CA2101627C
公开(公告)日：2007-04-03
申请号：CA2101627
申请日：1992-12-02
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 t he fluid and a centrally located vertical draft tube (13) submerged in the fluid to divide the mixing tank (12) into an inne r chamber (21) and an outer chamber (23). The reactor further comprises a motor driven axial flow impeller (14) located in the dra ft 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：BR9305579A
公开(公告)日：1996-01-02
申请号：BR9305579
申请日：1993-07-09
Applicant: TECH RESOURCES PTY LTD
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.
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公开(公告)号：ZA945173B
公开(公告)日：1995-02-27
申请号：ZA945173
申请日：1994-07-15
Applicant: TECH RESOURCES PTY LTD
Inventor： MCALLISTER PETER JAMES , ROY IAN , HOFFMANN WARWICK ARTHUR , BEAUPEURT SUSAN MERYL
IPC: C12N1/14 , B08B7/00 , B09B3/00 , B09B5/00 , B44D3/16 , C09D9/02 , C12N1/20 , C12P1/02 , C12R1/82 , C12S9/00 , C22B1/00 , C23G5/00 , B08B , B24C , C09D , C23G
Abstract: This invention relates to novel methods for removing paint, lacquers and other coatings from metal and alloy materials, in particular metallic cans. One method of the present invention involves a combination of steps including: (i) a pre-treatment step to alter the structure of the paint, lacquer or other coating, such pre-treatment preferably involving heat, making the coating more amenable to biostripping; and (ii) contacting the metal or alloy material with a bacterial culture capable of removing said coating. In an alternative method the combination of steps includes: (i) a heat treatment step to alter the structure of the paint, lacquer or other coating; and (ii) an abrasive treatment involving contacting the heat treated coated metal or alloy material in step (i) with a similarly heated material and/or with an untreated and/or uncoated like metal or alloy material, wherein the contact is caused by rolling in a rolling reactor. The abrasion step makes the paint, lacquer or coating of the metal or alloy in step (2) amenable to stripping with a fluid which fluid is either present in the rolling reactor or is jet sprayed onto the heat treated and abraded coated metal or alloy material. The removed paint, lacquer or other coating, and/or the liquid used to remove the coating is treated with orgamisms such as bacteria, capable of degrading said coating, before subsequent disposal.
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公开(公告)号：ZA9405173B
公开(公告)日：1995-02-27
申请号：ZA9405173
申请日：1994-07-15
Applicant: TECH RESOURCES PTY LTD
Inventor： MCALLISTER PETER JAMES , ROY IAN , HOFFMANN WARWICK ARTHUR , BEAUPEURT SUSAN MERYL
IPC: C12N1/14 , B08B7/00 , B09B3/00 , B09B5/00 , B44D3/16 , C09D9/02 , C12N1/20 , C12P1/02 , C12R1/82 , C12S9/00 , C22B1/00 , C23G5/00 , B08B , B24C , C09D , C23G
CPC classification number: C22B1/005 , B08B7/0078 , B08B2220/04 , B44D3/166 , C12P1/02 , C12R1/80 , Y02P10/238
Abstract: This invention relates to novel methods for removing paint, lacquers and other coatings from metal and alloy materials, in particular metallic cans. One method of the present invention involves a combination of steps including: (i) a pre-treatment step to alter the structure of the paint, lacquer or other coating, such pre-treatment preferably involving heat, making the coating more amenable to biostripping; and (ii) contacting the metal or alloy material with a bacterial culture capable of removing said coating. In an alternative method the combination of steps includes: (i) a heat treatment step to alter the structure of the paint, lacquer or other coating; and (ii) an abrasive treatment involving contacting the heat treated coated metal or alloy material in step (i) with a similarly heated material and/or with an untreated and/or uncoated like metal or alloy material, wherein the contact is caused by rolling in a rolling reactor. The abrasion step makes the paint, lacquer or coating of the metal or alloy in step (2) amenable to stripping with a fluid which fluid is either present in the rolling reactor or is jet sprayed onto the heat treated and abraded coated metal or alloy material. The removed paint, lacquer or other coating, and/or the liquid used to remove the coating is treated with orgamisms such as bacteria, capable of degrading said coating, before subsequent disposal.
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公开(公告)号：FI933415A0
公开(公告)日：1993-07-30
申请号：FI933415
申请日：1993-07-30
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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