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Class Information
Number: 423/183
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Alkali metal (li, na, k, rb, or cs) > Regenerating solution > Hydroxide solution
Description: Processes wherein the solution contains hydroxide (OH-
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7578984 |
Regeneration of caustic solutions |
Aug. 25, 2009 |
| 7247284 |
Method and apparatus for regeneration of flue gas scrubber caustic solutions |
Jul. 24, 2007 |
| 7214290 |
Treatment of spent caustic refinery effluents |
May. 8, 2007 |
| 7179437 |
Feeding device and process and feeding system which utilize the feeding device |
Feb. 20, 2007 |
| 7029573 |
Composition and control method for treating hydrocarbon |
Apr. 18, 2006 |
| 6955695 |
Conversion of petroleum residua to methane |
Oct. 18, 2005 |
| 6387348 |
Method for treating spent caustic streams |
May. 14, 2002 |
| 6210583 |
Spent caustic pretreatment and enhanced oxidation process |
Apr. 3, 2001 |
| 5997731 |
Process for treating an effluent alkaline stream having sulfur-containing and phenolic compounds |
Dec. 7, 1999 |
| 5885422 |
Spent caustic (pre)treatment process |
Mar. 23, 1999 |
| 5667633 |
Method of producing white liquor streams of high and low sulphidity |
Sep. 16, 1997 |
| 5597664 |
Lithium manganese oxide compound and method of preparation |
Jan. 28, 1997 |
| 5545385 |
Process for recovering alkali metal hydroxide from organic liquors |
Aug. 13, 1996 |
| 5520902 |
Process for making chromium-free orthorhombic sodium sulfate |
May. 28, 1996 |
| 5508018 |
Process for the regeneration of sodium hydroxide from sodium sulfide |
Apr. 16, 1996 |
| 5238664 |
Soda ash production |
Aug. 24, 1993 |
| 5209828 |
System for concentrating a spent caustic stream |
May. 11, 1993 |
| 5178848 |
Lithium metatungstate |
Jan. 12, 1993 |
| 5135732 |
Method for preparation of LiMn.sub.2 O.sub.4 intercalation compounds and use thereof in secondary lithium batteries |
Aug. 4, 1992 |
| 5068095 |
Method for reducing the amount of colorants in a caustic liquor |
Nov. 26, 1991 |
| 5047119 |
Method of stabilizing white liquor flow in the causticizing of green liquor from a kraft paper plant |
Sep. 10, 1991 |
| 4941945 |
Method for clarifying green liquor |
Jul. 17, 1990 |
| 4894217 |
Process for causticizing of an aqueous solution containing alkali carbonate |
Jan. 16, 1990 |
| 4889592 |
Process and apparatus for control in burning and slaking of lime and causticizing |
Dec. 26, 1989 |
| 4875997 |
Process for treating hydrocarbons containing mercaptans |
Oct. 24, 1989 |
| 4844838 |
Method of treatment of radioactive liquid waste |
Jul. 4, 1989 |
| 4837002 |
Removal of chlorate from caustic soda |
Jun. 6, 1989 |
| 4804498 |
Process for treating radioactive waste liquid |
Feb. 14, 1989 |
| 4800042 |
Radioactive waste water treatment |
Jan. 24, 1989 |
| 4770742 |
Method for increasing the efficiency of a causticizing process |
Sep. 13, 1988 |
| 4762590 |
Causticizing process |
Aug. 9, 1988 |
| 4676971 |
Method for removing chlorate from alkali metal hydroxide |
Jun. 30, 1987 |
| 4668342 |
Recausticizing kraft green liquor |
May. 26, 1987 |
| 4666689 |
Process for regenerating an alkaline stream containing mercaptan compounds |
May. 19, 1987 |
| 4636376 |
Sulfate removal from alkali metal chlorate solutions |
Jan. 13, 1987 |
| 4618480 |
Recovery of alumina values from alunite ore |
Oct. 21, 1986 |
| 4585579 |
Suppression of corrosion in caustic manufacturing systems |
Apr. 29, 1986 |
| 4486394 |
Alkali regeneration process |
Dec. 4, 1984 |
| 4430241 |
Mixed nitrate salt heat transfer medium and process for providing the same |
Feb. 7, 1984 |
| 4366130 |
Process for removing residual hydrazine from caustic solutions |
Dec. 28, 1982 |
| 4323436 |
Purification of aqueous solution of potassium chloride |
Apr. 6, 1982 |
| 4302281 |
Method for producing pulp |
Nov. 24, 1981 |
| 4260494 |
Method of purifying aqueous solutions of metal hydroxides |
Apr. 7, 1981 |
| 4236960 |
Process for controlling the degree of causticization in the preparation of white liquid from the chemicals recovered from black liquor |
Dec. 2, 1980 |
| 4230678 |
Process for recovering aluminum from alunite |
Oct. 28, 1980 |
| 4224289 |
Alkali regeneration process |
Sep. 23, 1980 |
| 4215224 |
Removal of dissolved disodium terephthalate from aqueous solution also containing sodium hydroxide |
Jul. 29, 1980 |
| 4163043 |
Process for removing H.sub.2 S and CO.sub.2 from gases and regenerating the adsorbing solution |
Jul. 31, 1979 |
| 4159922 |
Accelerated process for causticization of Kraft green liquor |
Jul. 3, 1979 |
| 4090954 |
Method for oxidizing mercaptans and mercaptide compounds from aqueous alkaline solutions and hydrocarbon distillates |
May. 23, 1978 |
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