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Class Information
Number: 422/185
Name: Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing > Chemical reactor > For chemical recovery of chemicals from waste paper making liquor
Description: Apparatus for chemically recovering chemicals for waste kraft or black liquors, e.g., waste liquor from a paper-making process.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7491370 |
System for treating wastes using molten salt oxidation |
Feb. 17, 2009 |
| 7442348 |
Sulfur-bearing residue treatment system |
Oct. 28, 2008 |
| 7241323 |
Pyrolysis process for producing fuel gas |
Jul. 10, 2007 |
| 7169197 |
Pyrolysis processing for solid waste resource recovery |
Jan. 30, 2007 |
| 6872522 |
Broad specificity affinity arrays: a qualitative approach to complex sample discrimination |
Mar. 29, 2005 |
| 6827912 |
Gasification reactor vessel |
Dec. 7, 2004 |
| 6797240 |
Process and apparatus for the extraction and regeneration of acids from spent acids |
Sep. 28, 2004 |
| 6627784 |
Highly efficient method of mixing dissimilar fluids using mechanically induced cavitation |
Sep. 30, 2003 |
| 6500301 |
Apparatus for gasification of spent liquor |
Dec. 31, 2002 |
| 6287415 |
Arrangement in soda recovery boiler for removing melts for maintenance |
Sep. 11, 2001 |
| 6178898 |
Recovery boiler |
Jan. 30, 2001 |
| 6146604 |
Method of removing nitrogen oxides from recovery boiler flue gases |
Nov. 14, 2000 |
| 6030493 |
Process for recovering chemicals and energy from cellulose spent liquor using multiple gasifiers |
Feb. 29, 2000 |
| 6027609 |
Pulp-mill recovery installation for recovering chemicals and energy from cellulose spent liquor using multiple gasifiers |
Feb. 22, 2000 |
| 6007680 |
Apparatus for safely conducting pressurized peroxide bleaching |
Dec. 28, 1999 |
| 5992337 |
Methods of improving productivity of black liquor recovery boilers |
Nov. 30, 1999 |
| 5961781 |
Process for recovering heat energy by condensation of vapor and dilution of sodium hydroxide using a condensing heat exchanger scrubbing system |
Oct. 5, 1999 |
| 5948373 |
Free radical oxidation installation for treating liquid effluents contaminated by organic substances |
Sep. 7, 1999 |
| 5932067 |
Method and apparatus for processing a fibrous mass in a spiral shaped flow-typed tube cell |
Aug. 3, 1999 |
| 5900112 |
Method of reducing the viscosity of a black liquor using thiocyanate salt |
May. 4, 1999 |
| 5855736 |
Method of reducing corrosion in a power boiler of a pulp mill |
Jan. 5, 1999 |
| 5820729 |
Device and process for dissolving smelt from recovery boilers |
Oct. 13, 1998 |
| 5820830 |
Waste recovery and utilization in the kraft recovery process |
Oct. 13, 1998 |
| 5752994 |
Black liquor gasifier |
May. 19, 1998 |
| 5735331 |
Method and apparatus for regulating the temperature in a chemical melt dissolving tank |
Apr. 7, 1998 |
| 5658540 |
High-tech computerized containment and treatment apparatus and process for combustion off-gas |
Aug. 19, 1997 |
| 5635152 |
Acid regeneration |
Jun. 3, 1997 |
| 5624470 |
Black liquor gasification with integrated warm-up and purge |
Apr. 29, 1997 |
| 5591308 |
Wood pulp reactor |
Jan. 7, 1997 |
| 5556602 |
Device in a reactor for gasifying spent liquor |
Sep. 17, 1996 |
| 5545292 |
Kraft smelt solidification in a fluidized bed reactor |
Aug. 13, 1996 |
| 5455011 |
System and method for heating and gasification of residual waste liquor |
Oct. 3, 1995 |
| 5439556 |
Oxidation of white liquor using a packing column |
Aug. 8, 1995 |
| 5425850 |
CFB black liquor gasification system operating at low pressures |
Jun. 20, 1995 |
| 5407455 |
Reactor for gasification of cellulose-waste liquors especially black liquor |
Apr. 18, 1995 |
| 5382322 |
Selective white liquor oxidation |
Jan. 17, 1995 |
| 5368731 |
Vacuum assisted slaker classifier |
Nov. 29, 1994 |
| 5351631 |
Removable damper for chemical recovery furnace |
Oct. 4, 1994 |
| 5307745 |
Removable damper for chemical recovery furnace |
May. 3, 1994 |
| 5204069 |
Recovery boiler smelt shattering spray |
Apr. 20, 1993 |
| 5171405 |
Reactor having a discontinuous conduit means between surfaces of a downwardly extending stationary spiral |
Dec. 15, 1992 |
| 5143702 |
Two stage white liquor oxidation apparatus |
Sep. 1, 1992 |
| 5133831 |
Method of concentrating black liquor by evaporation |
Jul. 28, 1992 |
| 4917763 |
Method of recovering chemical from spent pulp liquors |
Apr. 17, 1990 |
| 4889592 |
Process and apparatus for control in burning and slaking of lime and causticizing |
Dec. 26, 1989 |
| 4822428 |
Apparatus for cleaning air ports of a chemical recovery furnace |
Apr. 18, 1989 |
| 4761204 |
Chemical recovery process using break up steam control to prevent smelt explosions |
Aug. 2, 1988 |
| 4748004 |
Apparatus for cleaning air ports of a chemical recovery furnace |
May. 31, 1988 |
| 4717672 |
Oxidation sensor |
Jan. 5, 1988 |
| 4659020 |
Quick adjustable shatter jet mechanism |
Apr. 21, 1987 |
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