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Ziming Tan, Karl O Toppel: Process and apparatus for separating gas mixtures. The BOC Group, Coleman R Reap, Salvatore P Pace, May 25, 1999: US05906674 (10 worldwide citation)

A process for separating oxygen and nitrogen using an adsorption system comprising at least one main adsorption vessel containing an adsorbent selective for one component and at least one auxiliary adsorption vessel containing an adsorbent selective for the same component, the auxiliary vessel(s) be ...


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Karl O Toppel: Distillation apparatus. The BOC Group, David M Rosenblum, Larry R Cassett, April 8, 1997: US05617742 (10 worldwide citation)

A distillation apparatus having applicability to an air separation plant in which a distillation column is suspended within a containment sleeve from a main heat exchanger or a head condenser of the distillation column. The suspension of the distillation column is flexible so that the distillation c ...


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Karl O Toppel: Adsorbent vessel having a convective heat exchanger and flow developer. The BOC Group, David M Rosenblum, Larry R Cassett, November 3, 1992: US05160355 (7 worldwide citation)

The present invention provides an adsorbent vessel adapted to contain an adsorbent and form an adsorbent bed for use in adsorbing a component of a multicomponent gas mixture during a pressure swing adsorption process. In accordance with such process the adsorbent bed is regenerated by desorbing the ...


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Joseph Straub, Anish Mehta, Karl O Toppel: Air separation plant and method of fabrication. The BOC Group, David M Roseblum, Salvatore P Pace, November 16, 1999: US05983666 (7 worldwide citation)

An air separation plant having prefabricated heat exchanger and distillation column sections. The heat exchanger can be used in air expansion, waste expansion and product expansion plants by simply connecting the appropriate piping to the heat exchanger. The air separation unit is built up of standa ...


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Charles Brooks, Karl O Toppel: Method of separating nitrogen from air. The BOC Group, David M Rosenblum, Salvatore P Pace, November 23, 1999: US05987918

A method of separating air in a liquid nitrogen assist plant in which oxygen rich waste stream produced by the plant is used to partially pressurize adsorbent beds in a pre-purification unit operating in accordance with a pressure swing adsorption cycle.


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Karl O Toppel: Distillation apparatus. The Boc Group, July 1, 1998: TW335355

A sort of distillation apparatus, including:heat exchanger for cooling of mixture to a proper distillation temperature;at least one distillation tower;housing for housing the heat exchanger and at least one distillation tower; andsuspension device for suspending the heat exchanger and at least one d ...


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