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| Number | Title | Issue Date |
| 7182919 | Sulphurous acid generator with air injector This invention presents a sulphurous acid generator which employs a combination of novel blending contact and mixing mechanisms which maximize the efficiency and duration of contact between sulphur dioxide gas and water to form sulphurous acid in an open nonpressuri... | 02/27/2007 |
| 7090820 | Potassium monopersulfate triple salt with increased active oxygen content and substantially no K2S2O8 A method of preparing a potassium monopersulfate composition is presented, wherein the potassium monopersulfate composition has the formula (KHSO5)x(KHSO4)y(K2SO4)z, where x+y+z=1 and x=0.4... | 08/15/2006 |
| 7045109 | Conversion of sodium bromide to anhydrous hydrobromic acid and sodium bisulfate Process for the conversion of sodium bromide to anhydrous hydrobromic acid and sodium bisulfate, said process with the following sequential steps: reaction of sodium bromide and sulfuric acid in a solution of water to produce hydrobromic acid and sodium bisulfate wh... | 05/16/2006 |
| 6811763 | Conversion of sodium bromide to anhydrous hydrobromic acid and sodium bisulfate Process for the conversion of sodium bromide to anhydrous hydrobromic acid and sodium bisulfate, said process with the following sequential steps: reaction of sodium bromide and sulfuric acid in a solution of water to produce hydrobromic acid and sodium bisulfate wh... | 11/02/2004 |
| 6521200 | Catalyst and process for oxidation of sulphur dioxide A process for the recovery of sulphur trioxide, solutions of sulphuric acid, or organic derivatives thereof, using organic compounds and/or supercritical fluids, and catalyst. The process comprises the steps of passing a mixture of SO2 and an o... | 02/18/2003 |
| 6368570 | Process for manufacturing Caro's acid A process is disclosed for producing Caro's acid by introducing hydrogen peroxide of at least 50% by weight through a first fed line into a first reactor conduit sulfuric acid having a concentration of at least 85% by weight through a second feed line int... | 04/09/2002 |
| 5879653 | Method for producing caro's acid A process for reducing or eliminating Caro's acid mist, created when producing a hot mixture containing Caro's acid by reaction of sulfuric acid and hydrogen peroxide, is carried out by quenching the hot Caro's acid mixture with water to both cool and dil... | 03/09/1999 |
| 5470564 | Method for producing caro's acid This invention relates to a process for producing Caro's acid by reaction of at least 85% by weight sulfuric acid and at least 50% by weight hydrogen peroxide wherein the sulfuric acid and hydrogen peroxide are fed through separate feed lines into a funne... | 11/28/1995 |
| 5439663 | Method for producing Caro's acid This invention relates to a process for producing Caro's acid by reaction of at least 85% by weight sulfuric acid and at least 50% by weight hydrogen peroxide wherein the sulfuric acid and hydrogen peroxide are fed through separate feed lines into a funne... | 08/08/1995 |
| 5429812 | Manufacture of peroxidic compositions Production of peroxomonosulphuric acid (Caro's acid) by reaction between concentrated hydrogen peroxide and sulphuric acid solutions can be impaired substantially when substoichiometric amounts of sulphuric acid are employed. The problem is ameliorated or... | 07/04/1995 |
| 5304360 | Peroxoacid manufacture Conventional plant to produce peroxomonosulphuric acid (Caro's acid) is large and emphasises extensive cooling, so that it is awkward to transport, can be cumbersome to install beside existing plant and can suffer from relatively expensive capital and/or ... | 04/19/1994 |
| 5141731 | Process for the generation of peroxyacids A process and an apparatus are described for the production of peroxyacids from concentrated solutions of hydrogen peroxide and an oxyacid. The total amount of concentrated hydrogen peroxide is divided into at least two portions which are added separately... | 08/25/1992 |
| 4490347 | Process for sulfuric acid regeneration Process for regenerating spent acid is improved by using oxygen-enriched air for combustion, recycling stack gases, and preheating spent acid and air fed to the furnace.... | 12/25/1984 |
| 4229422 | Metal extraction In a process according to the present invention uranium is extracted into solution from its ore by leaching with an aqueous solution containing peroxomonosulphuric acid, the peroxoacid oxidizing the uranium through to its hexavalent state. Preferably the ... | 10/21/1980 |
| 4049786 | Process of preparing peroxymonosulfate High strength peroxymonosulfate is prepared by adding concentrated sulfuric acid to a solution of a soluble peroxydisulfate whereby the heat of solvation of the sulfuric acid hydrolyzes the peroxydisulfate to the peroxymonosulfate; the temperature is cont... | 09/20/1977 |
| 3932584 | Method for purifying hydrogen sulfide-containing gas Hydrogen sulfide-containing waste gases whose complete treatment is indispensable from the viewpoint of environmental pollution problem, are purified in two steps consisting of a first step in which the gases are absorbed in an aqueous solution of sodium ... | 01/13/1976 |
