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Class Information
Number: 423/207
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Alkali metal (li, na, k, rb, or cs) > Mixture contains organic or carbonaceous impurity > Burning the impurity
Description: Processes including combusting the organic or carbonaceous impurity.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6425976 |
Method for black liquor gasification in recovery boilers |
Jul. 30, 2002 |
| 6228214 |
Method for black liquor gasification in recovery boilers |
May. 8, 2001 |
| 5984987 |
Black liquor gasification process |
Nov. 16, 1999 |
| 5702570 |
Process of producing sodium hydroxide from sodium sulphate in a pulp mill |
Dec. 30, 1997 |
| 5545385 |
Process for recovering alkali metal hydroxide from organic liquors |
Aug. 13, 1996 |
| 5405496 |
Process for the preparation of cooking liquors having high sulphidity for sulphate pulp cooking |
Apr. 11, 1995 |
| 4913736 |
Process for recovering platinum group metals |
Apr. 3, 1990 |
| 4857282 |
Combustion of black liquor |
Aug. 15, 1989 |
| 4718978 |
Spent pulping liquor recovery process |
Jan. 12, 1988 |
| 4710269 |
Recovering chemicals from spent pulp liquors |
Dec. 1, 1987 |
| 4682985 |
Gasification of black liquor |
Jul. 28, 1987 |
| 4637858 |
Pyrolysis of black liquor at high temperatures using radiant energy |
Jan. 20, 1987 |
| 4486394 |
Alkali regeneration process |
Dec. 4, 1984 |
| 4439272 |
Pulp mill residual liquor recovery process |
Mar. 27, 1984 |
| 4377439 |
Pulp mill recovery |
Mar. 22, 1983 |
| 4363698 |
Method for drying and burning viscous aqueous liquors which contain organics |
Dec. 14, 1982 |
| 4347226 |
Method for treating sulfur-containing effluents resulting from petroleum processing |
Aug. 31, 1982 |
| 4334956 |
Method of reutilizing kraft spent liquor |
Jun. 15, 1982 |
| 4329199 |
Process for digesting and bleaching cellulosic material with reduced emissions |
May. 11, 1982 |
| 4322266 |
Process for catalyzing reduction in a Kraft recovery boiler |
Mar. 30, 1982 |
| 4312702 |
Fluidized bed start up and operation |
Jan. 26, 1982 |
| 4299652 |
Process for recovery of pulp mill chemicals |
Nov. 10, 1981 |
| 4288286 |
Kraft mill recycle process |
Sep. 8, 1981 |
| 4237103 |
Method for disposal of sodium waste material |
Dec. 2, 1980 |
| 4224289 |
Alkali regeneration process |
Sep. 23, 1980 |
| 4212702 |
Process for recovery of chemicals from pulping waste liquor |
Jul. 15, 1980 |
| 4208245 |
Pyrolysis of spent pulping liquors |
Jun. 17, 1980 |
| 4177246 |
Wet oxidation of materials |
Dec. 4, 1979 |
| 4154643 |
Recovery process and apparatus for alkali metal-containing spent liquor |
May. 15, 1979 |
| 4148684 |
Methods for recovery and recycling of chemicals from sodium sulfite and sodium bisulfite pulping operations |
Apr. 10, 1979 |
| 4144311 |
Purifying salts containing organic pollutants |
Mar. 13, 1979 |
| 4141785 |
Process for recovery of chemicals from pulping waste liquor |
Feb. 27, 1979 |
| 4093508 |
Process for recovering chemicals from the waste liquors of sulfate cellulose digestion and the waste waters of bleaching |
Jun. 6, 1978 |
| 4067767 |
Liquid phase coking of spent kraft pulping liquors |
Jan. 10, 1978 |
| 4049489 |
Method of producing pulp and burning waste liquor obtained thereby |
Sep. 20, 1977 |
| 4049787 |
Process for separating sulphur in the form of hydrogen sulphide from clarified green liquor obtained from the combustion of waste liquor |
Sep. 20, 1977 |
| 4044097 |
Recovery of soda values from sodium carbonate crystallizer purge liquors |
Aug. 23, 1977 |
| 4035228 |
Recovery process and apparatus for alkali metal-containing waste liquor |
Jul. 12, 1977 |
| 4007082 |
Kraft mill recovery system |
Feb. 8, 1977 |
| 4000264 |
Method of recovering sodium hydroxide from sulfur free pulping or bleaching waste liquor by mixing ferric oxide with condensed waste liquor prior to burning |
Dec. 28, 1976 |
| 3996097 |
Kraft mill recovery system |
Dec. 7, 1976 |
| 3991160 |
Recovery of soda values from sodium carbonate crystallizer purge liquors |
Nov. 9, 1976 |
| 3986923 |
Removal of dissolved salts from sulphide liquors |
Oct. 19, 1976 |
| 3972180 |
High pressure reactor with turbo expander |
Aug. 3, 1976 |
| 3959068 |
Process and apparatus for recovery of sulfur from a polysulfide pulping operation |
May. 25, 1976 |
| 3954552 |
Removal of sodium chloride from pulp mill systems |
May. 4, 1976 |
| 3950217 |
Removal of sodium chloride from pulping operations |
Apr. 13, 1976 |
| 3945880 |
Sodium chloride removal in pulp mill systems |
Mar. 23, 1976 |
| 3944462 |
Coking of waste kraft pulping liquors at lowered pH |
Mar. 16, 1976 |
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