Keith Peter Vogel

US Patent:

6582554, Jun 24, 2003

Filed:

May 13, 2002

Appl. No.:

10/142944

Inventors:

Kaj O. Henricson - Kotka, FI
C. Bertil Stromberg - Glens Falls NY
Richard Laakso - Queensbury NY
John F. Bolles - Queensbury NY
Keith P. Vogel - Queensbury NY
Patrick J. Sullivan - Argyle NY

Assignee:

Andritz Inc. - Glens Falls NY

International Classification:

D21C 326

US Classification:

162 17, 162 19, 162 52, 162232, 162237, 162239, 162243

Abstract:

A method is disclosed for extracting liquor from a cellulose slurry for a continuous digester comprising the steps of: providing the cellulose slurry of liquor and chips of cellulose fiber material to a separator; extracting a first stream of liquor from the separator; extracting a second stream of liquor from the separator, where the second stream has an effective alkali (EA) concentration greater than the EA concentration of the first steam; outputting the first stream from the separator and outputting the second stream from the separator separately from the second stream, and outputting a condensed slurry from the separator to a digester vessel.

US Patent:

6589391, Jul 8, 2003

Filed:

Oct 29, 2001

Appl. No.:

09/984335

Inventors:

Keith P. Vogel - Queensbury NY
John F. Bolles - Queensbury NY
C. Bertil Stromberg - Glens Falls NY

Assignee:

Andritz Inc. - Glens Falls NY

International Classification:

D21C 706

US Classification:

162246, 162245, 162248, 162 17, 277510, 277306, 277318, 277345

Abstract:

A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a nominal clearance with the pack box, said sealing ring mounted so that up lifting of said shaft provides a substantially fluid tight seal between said pack box and a side of said ring (in the digester) opposite the pack box.

US Patent:

6673201, Jan 6, 2004

Filed:

Nov 8, 2002

Appl. No.:

10/290272

Inventors:

Keith P. Vogel - Queensbury NY
John F. Bolles - Queensbury NY
C. Bertil Stromberg - Glens Falls NY

Assignee:

Andritz, Inc. - Glens Falls NY

International Classification:

D21C 326

US Classification:

162 17, 162 28, 162 23, 162 57, 162246, 277304, 277306, 277308, 277510, 210767

Abstract:

A top separator assembly for a digester is disclosed comprising: a rotatable shaft for the top separator; a packing for the shaft; and a sealing ring operatively mounted to the shaft and having a nominal clearance with the pack box, said sealing ring mounted so that up lifting of said shaft provides a substantially fluid tight seal between said pack box and a side of said ring (in the digester) opposite the pack box.

US Patent:

7105076, Sep 12, 2006

Filed:

Nov 26, 2002

Appl. No.:

10/303774

Inventors:

C. Bertil Stromberg - Bolton Landing NY, US
Keith P. Vogel - Queensbury NY, US
John F. Bolles - Queensbury NY, US
Patrick J. Sullivan - Argyle NY, US
Brian F. Greenwood - Queensbury NY, US

Assignee:

Andritz Inc. - Glens Falls NY

International Classification:

D21C 7/00

US Classification:

162237, 162246, 162249, 162 17, 162 19, 162 52, 162251, 162239

Abstract:

A continuous digester is disclosed for producing chemical cellulose pulp from cellulose chips, comprising: a continuous digester vessel having a lower section filled with the cellulose chips and an upper gas filled section; an inverted separator at least partially in said upper section which introduces chips and liquid into said digester vessel and separates some of the liquid from the chips, wherein said separator includes a drive shaft connected to a conveyor, and a liquid discharge port proximate to the drive shaft and arranged proximate to a chip discharge of the separator.

US Patent:

7309401, Dec 18, 2007

Filed:

Apr 14, 2004

Appl. No.:

10/823763

Inventors:

Keith P. Vogel - Queensbury NY, US
John F. Bolles - Queensbury NY, US
Patrick J. Sullivan - Argyle NY, US
C. Bertil Stromberg - Bolton Landing NY, US

Assignee:

Andritz Inc. - Glens Falls NY

International Classification:

D21C 7/00

US Classification:

162236, 162237, 162246, 162 52, 162 41

Abstract:

A continuous digester for producing chemical cellulose pulp from cellulose chips including: a digester vessel with an upper section attached to a top separator and said vessel at least partially filled with the cellulose chips and a liquor; a top separator at least partially in said upper section having a lower chip inlet port, a chip conveyor, a screen adjacent the conveyor, an upper chip discharge chute, and a liquor outlet facing a side of the screen opposite to the conveyor, and a chip inlet conduit extending into the vessel and having a first operational mode in fluid communication with the chip inlet port and a second operational mode in which the chip inlet conduit discharges directly into the vessel.

US Patent:

7455749, Nov 25, 2008

Filed:

Sep 11, 2006

Appl. No.:

11/518323

Inventors:

C. Bertil Stromberg - Bolton Landing NY, US
Keith P. Vogel - Queensbury NY, US
John F. Bolles - Queensbury NY, US
Patrick J. Sullivan - Argyle NY, US
Brian F. Greenwood - Queensbury NY, US

Assignee:

Andritz Inc. - Glens Falls NY

International Classification:

D21C 3/26

US Classification:

162 17, 162 18, 162 19, 162 41, 162 56, 162246, 162239

Abstract:

A method for adding cooking liquor into a vapor phase continuous digester for producing chemical cellulose pulp from cellulose chips including: introducing a slurry of the cellulose chips from a feed system to an inverted top separator in a top vapor phase section of the digester; distributing the slurry of the cellulose chips from the top separator into the vapor phase section of the digester; passing liquor through a conduit included with the drive shaft assembly of the top separator, and introducing the liquor from the conduit into the slurry as the slurry flows through the top separator or is distributed from the separator into the vapor phase section.

US Patent:

7658818, Feb 9, 2010

Filed:

Mar 19, 2007

Appl. No.:

11/687835

Inventors:

Keith P. Vogel - Queensbury NY, US
John F. Bolles - Queensbury NY, US
Patrick J. Sullivan - Argyle NY, US
C. Bertil Stromberg - Diamond Point NY, US

Assignee:

Andritz Inc. - Glens Falls NY

International Classification:

D21C 1/10

US Classification:

162 52, 162 41, 162 42, 162236, 162246

Abstract:

A method for converting a vapor phase continuous digester to a hydraulic digester including the steps of: operating the vapor phase digester in a vapor phase mode wherein a chip slurry enters the vessel of the digester through a lower chip inlet port, moves up through a top separator, discharges from an upper chip discharge chute of the separator to an upper vapor region of the vessel and falls to a liquor filled region of the vessel; ceasing the flow of the chip slurry to the separator; establishing a chip slurry flow path to an upper portion of top separator, and filling the vessel with liquor and chips such that the chip discharge chute is immersed in liquor.

US Patent:

7846298, Dec 7, 2010

Filed:

Apr 14, 2008

Appl. No.:

12/102485

Inventors:

Peter E. Thorgersen - Gansevoort NY, US
Ronald G. Bain - Salem NY, US
Keith Vogel - Queensbury NY, US
Tim Pease - South Glens Falls NY, US

Assignee:

Andritz Inc. - Glens Falls NY

International Classification:

D21C 7/02

US Classification:

162244, 162246, 277510

Abstract:

An outlet device and motor assembly for a pressured vessel is disclosed, where the assembly includes: a generally vertical drive shaft extending below and through the vessel and coupled to a rotating mechanism within the vessel; a stationary outlet housing supporting the drive shaft; a thrust bearing mounted on the outlet housing and around the drive shaft to rotationally engage the drive shaft; a hydraulic drive coupled to rotationally drive the drive shaft, and a radial bearing mounted around the drive shaft to rotationally engage the drive shaft and said radial bearing is at or below the hydraulic drive.