1
David E White, Michael A Pikulin, Thomas P Gandck, William H Friend: Pulp bleaching reactor for dispersing high consistency pulp into a gaseous bleaching agent containing ozone. Union Camp Patent Holding, Pennie & Edmonds, January 26, 1999: US05863389 (29 worldwide citation)

An apparatus for delignifying and bleaching a lignocellulosic pulp without the use of elemental chlorine. The bleaching reactor is a horizontal vessel having a central rotatable shaft which preferably contains paddles, cut and folded screw flights or a ribbon flight, to disperse and advance the pulp ...


2
George Pangalos, Ronald A Falcone Jr, William L Mayo, Gregory J Bosch: Control scheme for rapid pulp delignification and bleaching. Union Camp Patent Holding, Gary M Nath, Suet Chong, Nath & Associates, September 30, 1997: US05672247 (25 worldwide citation)

A process control for adjusting bleaching agent application in response to the pulp brightness and/or K number is realized by utilizing a coupled control feedforward and/or feedback control system or combination thereof wherein brightness measurements are made between successive K number measurement ...


3
Bruce F Griggs, Thomas P Gandek, Michael A Pikulin, Allen Rosen: Environmentally improved process for bleaching lignocellulosic materials with ozone. Union Camp Patent Holding, Pennie & Edmonds, November 17, 1992: US05164043 (22 worldwide citation)

A process for delignifying and bleaching a lignocellulosic pulp without the use of elemental chlorine by partially delignifying the pulp to a K No. of about 10 or less and a viscosity of greater than about 13 cps; and further delignifying the partially delignified pulp with an effective amount of oz ...


4
Bruce F Griggs, Thomas P Gandek, Michael A Pikulin, Allen Rosen: Process for high consistency oxygen delignification followed by ozone relignification. Union Camp Patent Holding, Pennie & Edmonds, February 23, 1993: US05188708 (14 worldwide citation)

A process for delignifying and bleaching a lignocellulosic pulp without the use of elemental chlorine by partially delignifying the pulp to a K No. of about 10 or less and a viscosity of greater than about 13 cps; and further delignifying the partially delignified pulp with an effective amount of oz ...


5
Bruce F Griggs, Thomas P Gandek, Michael A Pikulin, Allen Rosen: Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification. Union Camp Patent Holding, Pennie & Edmonds, May 18, 1993: US05211811 (13 worldwide citation)

A process for delignifying and bleaching a lignocellulosic pulp without the use of elemental chlorine by partially delignifying the pulp to a K No. of about 10 or less and a viscosity of greater than about 13 cps; and further delignifying the partially delignified pulp with an effective amount of oz ...


6
George W McDonald: Method for controlling an ozone bleaching process. Union Camp Patent Holding, Nath Amberly & Associates, April 4, 1995: US05403441 (12 worldwide citation)

A method for controlling the gas recycle loop of an ozone bleaching process wherein an ozone generator produces an ozone containing gas from an oxygen containing feed gas and delivers the ozone containing gas to an ozone reactor at a variable flow rate responsive to reactor ozone demand. Pulp is ble ...


7
Bruce F Griggs, Thomas P Gandek, Michael A Pikulin, Allen Rosen: Environmentally improved process for bleaching lignocellulosic materials with ozone. Union Camp Patent Holding, Pennie & Edmonds, November 17, 1992: US05164044 (11 worldwide citation)

A process for delignifying and bleaching a lignocellulosic pulp without the use of elemental chlorine by partially delignifying the pulp to a K No. of about 10 or less and a viscosity of greater than about 13 cps; and further delignifying the partially delignified pulp with an effective amount of oz ...


8
Michael A Pikulin, William H Friend: Two stage pulp bleaching reactor. Union Camp Patent Holding, Pennie & Edmonds, September 19, 1995: US05451296 (10 worldwide citation)

A two stage ozone-pulp bleaching method and apparatus are disclosed. In the first stage, high consistency pulp particles are turbulently mixed and contacted with a gaseous mixture containing ozone to mix and contact substantially all of the pulp particles with ozone to react at least a portion of th ...


9
Albert A Nevruz: Recovery boiler leak detection system and method. Union Camp Patent Holding, Synnestvedt & Lechner, December 8, 1998: US05847266 (9 worldwide citation)

An improvement is disclosed for a boiler leak system that (a) measures fluid input into the recovery boiler system, (b) measures fluid output from the recovery boiler system, and (c) calculates fluid leakage loss based on an average difference between the measured fluid input and output values. The ...


10
Stuart T Jones: Rotating pulp bleaching reactor having inner and outer shells and lifting means on the interior surface of the inner shell. Union Camp Patent Holding, Pennie & Edmonds, February 11, 1992: US05087326 (9 worldwide citation)

An apparatus for bleaching pulp particles comprising an inner tubular shaped shell member with lifter blades mounted on its internal wall surface. The shell member is rotatably mounted within an outer shell member with seals between the shell members providing an isolated space. This space is pressu ...