公开(公告)号：CA2116248A1

公开(公告)日：1994-01-20

申请号：CA2116248

申请日：1993-07-09

Applicant: TECH RESOURCES PTY LTD

Inventor： BETTERHAM ROBIN J ,  HOFFMANN WARWICK A ,  CONOCHIE DAVID S ,  BATTERHAM ROBIN J

IPC: B01F3/04 ,  B01F5/04 ,  B01F15/02 ,  B01J8/18 ,  B01J10/00 ,  B01J19/18 ,  C02F3/14 ,  C02F3/20

Abstract: 2116248 9401210 PCTABS00030 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.

公开(公告)号：CA2101627A1

公开(公告)日：1993-06-03

申请号：CA2101627

申请日：1992-12-02

Applicant: TECH RESOURCES PTY LTD

Inventor： BATTERHAM ROBIN J ,  HOFFMANN WARWICK A ,  KATSIKAROUS NICHOLAS

IPC: B01F3/04 ,  B01F3/08 ,  B01F5/04 ,  B01F5/10 ,  B01F7/00 ,  C02F3/14 ,  C02F3/22 ,  B01J10/00

Abstract: 2101627 9310890 PCTABS00022 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).