公开(公告)号：AU2018338626A1

公开(公告)日：2020-05-07

申请号：AU2018338626

申请日：2018-09-27

Applicant: STEVENS INSTITUTE OF TECHNOLOGY

Inventor： LAWAL ADENIYI ,  ZHOU LIN

IPC: B01D53/70 ,  B01D53/78

Abstract: Process and apparatus (10) are disclosed for capturing and converting an ozone-depleting alkyl halide fumigant from a fumigant/air mixed stream (14) by absorbing it into a metal hydroxide-alcohol buffer solution (26) in an absorber/scrubber (12) to produce a fumigant-free air stream (28). The captured alkyl halide in aqueous alcohol solution can actively react with the metal hydroxide in alcohol solution to produce a value-added product, such as a precipitate metal halide, and another alcohol that further enhances absorption. The absorbing solution is well-mixed with make-up alcohol and alkali streams to maintain the concentration of the metal hydroxide in the desired buffer solution range. The solid precipitate metal halide (52) is separated from the liquid stream, and the metal hydroxide-containing mixed alcohol stream (26) is recycled to the absorber/scrubber (12).

公开(公告)号：AU2018338626B2

公开(公告)日：2022-11-10

申请号：AU2018338626

申请日：2018-09-27

Applicant: STEVENS INSTITUTE OF TECHNOLOGY

Inventor： LAWAL ADENIYI ,  ZHOU LIN

IPC: B01D53/70 ,  B01D53/78

Abstract: Process and apparatus (10) are disclosed for capturing and converting an ozone-depleting alkyl halide fumigant from a fumigant/air mixed stream (14) by absorbing it into a metal hydroxide-alcohol buffer solution (26) in an absorber/scrubber (12) to produce a fumigant-free air stream (28). The captured alkyl halide in aqueous alcohol solution can actively react with the metal hydroxide in alcohol solution to produce a value-added product, such as a precipitate metal halide, and another alcohol that further enhances absorption. The absorbing solution is well-mixed with make-up alcohol and alkali streams to maintain the concentration of the metal hydroxide in the desired buffer solution range. The solid precipitate metal halide (52) is separated from the liquid stream, and the metal hydroxide-containing mixed alcohol stream (26) is recycled to the absorber/scrubber (12).

公开(公告)号：CA3077230A1

公开(公告)日：2019-04-04

申请号：CA3077230

申请日：2018-09-27

Applicant: STEVENS INSTITUTE OF TECHNOLOGY

Inventor： LAWAL ADENIYI ,  ZHOU LIN

IPC: B01D53/70 ,  B01D53/78

Abstract: Process and apparatus (10) are disclosed for capturing and converting an ozone-depleting alkyl halide fumigant from a fumigant/air mixed stream (14) by absorbing it into a metal hydroxide-alcohol buffer solution (26) in an absorber/scrubber (12) to produce a fumigant-free air stream (28). The captured alkyl halide in aqueous alcohol solution can actively react with the metal hydroxide in alcohol solution to produce a value-added product, such as a precipitate metal halide, and another alcohol that further enhances absorption. The absorbing solution is well-mixed with make-up alcohol and alkali streams to maintain the concentration of the metal hydroxide in the desired buffer solution range. The solid precipitate metal halide (52) is separated from the liquid stream, and the metal hydroxide-containing mixed alcohol stream (26) is recycled to the absorber/scrubber (12).