专利检索_ 钠钾或一般碱金属的硫酸盐或亚硫酸盐专利检索_ 钠钾或一般碱金属的硫酸盐或亚硫酸盐专利检索查询

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序号	专利名	申请号	申请日	公开（公告）号	公开（公告）日	发明人
201	PROCEDE DE TRAITEMENT DE FUMEES A BASE D'OXYDES DE SOUFRE	EP96937379.4	1996-10-31	EP0858428B1	2001-01-24	FOURCOT, Fabrice; POUXVIEL, Jean-Claude
A method for dry or wet-dry processing flue gases containing compounds such as sulphur oxides, wherein the flue gases are treated with a reagent selected from sodium carbonate, sodium bicarbonate and mixtures thereof, the resulting sodium sulphates are selectively dissolved in water, the solids still in suspension in the solution are separated, and the purified sodium sulphate contained in said solution is crystallised. The method enables reusable sodium sulphate to be produced.
202	PROCEDE D'OBTENTION DE SEL, NOTAMMENT DE CHLORURE DE POTASSIUM, PAR LIXIVIATION ET REFROIDISSEMENT DE LA SOLUTION	EP96902329.0	1996-02-02	EP0827487B1	2000-04-05	Mahue, Bernard
A method for preparing a salt, particularly potassium chloride, by leaching a salt formation with an injected brine solution, and separating salts from the saturated solution by cooling said solution to the eutectic point temperature, recycling the hydrates and crystal mixtures, separating out the crystals, and reinjecting the remaining brine solution.
203	Zero discharge pulp mill cascading water management	EP96250103.7	1993-12-07	EP0728864A3	1999-07-28	Nykanen, Tuomo S., Kamyr, Inc.; Grenwood, Brian F., Kamyr, Inc.; Gullichsen, Johan; Kiiskila, Erkki; Mattelmaki, Eskor; Phillips, Joseph, R.; Richardson, Jan T.; Ryham, Rolf; Soderman, Jarmo; Wiklund, Karl G.
The invention relates to a method and apparatus for managing liquid streams in a cellulose pulp mill having a digester (210), a bleach plant (212) and at least first, second and third loops (94-97) of liquid streams in the pulp mill, the loops having liquid streams therein of significantly different contamination levels, the contamination level gradually increasing from the first loop to the third loop. The method comprises the steps of: (a) sensing (in 309, 98) the contamination level in at least the first and second loops; (b) when the contamination level in the first loop exceeds a predetermined level, discharging some of the contaminated liquid from the first loop to the second loop, and replacing it with less contaminated liquid; (c) when the contamination level in the second loop exceeds a predetermined level, discharging some of the contaminated liquid from the second loop to the third loop, and replacing it with less contaminated liquid; and (d) purifying (e.g. in 229 230, 231) the most contaminated liquid from the loops to produce the less contaminated liquid for addition to at least step (b).
204	Verfahren und Vorrichtung zum Eindampfen salzhaltiger Lösungen	EP98104350.8	1998-03-11	EP0864535A3	1999-07-14	Wetteborn, Klaus, Dr. Dipl.-Ing.; Gutmann, Arnd, Dipl.-Ing.; Linn, Horst, Dipl.-Ing.; Brandau, Egbert, Dipl.-Chem.; Wörner, Jörg, Dr. Dipl.-Chem.; Theisen, Wolfgang, Dipl.-Ing.; Chrubasik, Alfred, Dipl.-Ing.
Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum Eindampfen und Verfestigen von salzhaltigen Lösungen in einem geschlossenen Behälter unter Einwirkung von Wärme, wobei die Salzlösung kontinuierlich oder batchweise dem Behälter zugeführt, Flüssigkeit verdampft und vorzugsweise einem Kondensatbehälter zugeführt wird. Um mit hohem Wirkungsgrad Lösungen eindampfen und verfestigen zu können, erfolgt ein Erwärmen mit Mikrowellen, die im Wesentlichen unmittelbar auf die salzhaltige Lösung abgestrahlt werden.
205	PROCEDE DE TRAITEMENT DE FUMEES A BASE D'OXYDES DE SOUFRE	EP96937379.0	1996-10-31	EP0858428A1	1998-08-19	FOURCOT, Fabrice; POUXVIEL, Jean-Claude
A method for dry or wet-dry processing flue gases containing compounds such as sulphur oxides, wherein the flue gases are treated with a reagent selected from sodium carbonate, sodium bicarbonate and mixtures thereof, the resulting sodium sulphates are selectively dissolved in water, the solids still in suspension in the solution are separated, and the purified sodium sulphate contained in said solution is crystallised. The method enables reusable sodium sulphate to be produced.
206	CO-PRODUCTION OF POTASSIUM SULFATE AND SODIUM SULFATE	EP95940022.0	1995-11-13	EP0796222A1	1997-09-24	LAMPERT, Shalom; HOLDENGRABER, Curt
A process for producing potassium sulfate or potassium sulfate and sodium sulfate from potash (10) and a sodium sulfate/water source (46 and/or 76), which includes: (a) subjecting a sodium sulfate source (46 and/or 76) to conversion with potash (10) in an aqueous medium to yield glaserite precipitate (20) and a first mother liquor (26); (6) converting the glaserite precipitate (20) with potash (10) and water (18) to produce a potassium sulfate precipitate (52) and a second mother liquor (40); (c) returning the second mother liquor (40) to step (a); (d) evaporating the first mother liquor (26) such that a sodium chloride and anhydrous sodium sulfate solids mixture is precipitated in a third mother liquor (28); (e) subjecting the solids from step (d) to a sodium sulfate/water source (12) to produce anhydrous sodium sulfate; and (f) returning the third mother liquor (28) for conversion to potassium salts.
207	RAUCHGASENTSCHWEFELUNG	EP93919090.6	1993-08-18	EP0656806B1	1996-09-25	YÜKSEL, Levent; JOHANNISBAUER, Wilhelm; NEUKIRCH, Herbert; SCHWIECKER, Alfred
In the method proposed, the flue gases are scrubbed (3) with a solution containing an alkali. The scrubbing solution is then purified, before or after an oxidation stage (4), in an operation (6) comprising a combination of sedimentation and membrane filtration. At least a part of the solids in the concentrate obtained from the membrane filtration is separated off by sedimentation and the remaining liquid fed back to the membrane-filtration process and hence into the main circuit, and the alkali-metal sulphate crystallized out. A pure-white alkali-metal sulphate free of dark-coloured impurities is thus obtained inexpensively.
208	VERFAHREN ZUR ENTSORGUNG VON NATRIUM-SCHWEFEL-SPEICHERZELLEN	EP93919069.0	1993-08-16	EP0656154B1	1996-02-14	HAMMER, Hartmut; WINKLER, Dieter
Sodium-sulphur accumulator cells are disposed of and recycled by crushing the cells in the presence of water, by separating the solid residual materials and by preparing an aqueous solution of Na-polysulfide. Variations in the reaction process allow the products thus obtained to be economically processed while minimizing secondary products.
209	ZERO DISCHARGE MILL DISTILLATION, SALT RECOVERY, AND WATER MANAGEMENT	EP94909414.0	1993-12-07	EP0687323A1	1995-12-20	NYKANEN, Tuomo, S.; GRENWOOD, Brian, F.; GULLICHSEN, Johan; KIISKILA, Erkki; MATTELMAKI, Esko; PHILLIPS, Joseph, R.; RICHARDSON, Jan, T.; RYHAM, Rolf; SODERMAN, Jarmo; WIKLUND, Karl, G.
In minimizing effluents from a cellulose pulp mill, liquid effluents from a bleach plant are concentrated, and then incinerated to produce a residue including sodium, sulfate, and sodium chloride. This residue is distilled with sulfuric acid to produce gaseous hydrogen chloride and remaining residue, the HC1 being used in chloride dioxide production for the bleach plant, while the remaining residue is passed to the recovery loop (e.g. recovery boiler). Sulfur containing gases from the non-condensible gas system may be combusted to produce gaseous sulfur dioxide, which is then converted to sulfuric acid, to distill the residue. Where a non-chlorine bleach plant is provided, the liquid effluents may be concentrated in evaporators and then passed directly to the recovery boiler. The liquid streams in the mill are managed by a cascade principle to reserve the cleanest water for only those processes where it is needed while minimizing its use where it is not necessary.
210	METATHESIS OF ACIDIC BY-PRODUCT OF CHLORINE DIOXIDE GENERATING PROCESS.	EP94901185	1993-10-21	EP0667835A4	1995-10-18	SCRIBNER HERBERT C; FREDETTE MAURICE C J; BECHBERGER EDWARD J; PU CHUNMIN
Sodium sesquisulfate produced in crystalline form in a high acidity highly efficient chlorine dioxide generating process (#12) as shown in the figure is converted by metathesis to crystalline anhydrous neutral sodium sulfate (#40) and the acid recovered as a result is recycled (#44) to the chlorine dioxide generating step. The metathesis (#32) is effected by contacting the crystalline sodium sesquisulfate with aqueous sodium chlorate solution (34) aqueous chloride solution, aqueous methanol or water alone. The metathesis is effected in such manner as to minimize the additional evaporative load imposed on the chlorine dioxide generating process by the metathesis medium.
211	METATHESIS OF ACIDIC BY-PRODUCT OF CHLORINE DIOXIDE GENERATING PROCESS	EP92908337.0	1992-04-21	EP0646094A1	1995-04-05	SCRIBNER, Herbert, C.; FREDETTE, Maurice, C., J.; BECHBERGER, Edward, J.
Sodium sesquisulfate (30) produced in crystalline form in a high acidity methanol-based highly efficient chlorine dioxide generating process is converted by metathesis (32) to crystalline anhydrous neutral sodium sulfate (40) and the acid recovered as a result is recycled (44) to the chlorine dioxide generating step (12). The metathesis is effected by contacting the crystalline sodium sesquisulfate with aqueous sodium chlorate solution (34), aqueous sodium chloride solution, aqueous methanol or water alone. The metathesis is effected in such manner as to minimize the additional evaporative load imposed on the chlorine dioxide generating process by the metathesis medium.
212	Recovery of IDA and glauber's salt from waste crystal liquors	EP90311134.2	1990-10-11	EP0425131B1	1995-01-18	Thunberg, Jon C.

213	Recovery of glycine and Glauber's salt from waste crystal liquors	EP90303914.7	1990-04-11	EP0392823A2	1990-10-17	Thunberg, Jon C.
Glycine and sodium sulfate decahydrate are separated from a starting aqueous solution containing glycine, sodium sulfate, and impurities, by forming a slurry which is a solid mixture of glycine and sodium sulfate decahydrate, followed by separation of the mixed crystals.
214	Verfahren zur Gewinnung von Magnesiumsulfaten	EP87115132.0	1987-10-16	EP0266599A3	1989-10-11	Singewald, Arno, Prof. Dr.; Neitzel, Ulrich, Dr.; Fricke, Günter, Dr.
Aus Hartsalzen werden zwei Magnesiumsulfat-Konzentrate bei vermindertem Abwasseranfall durch Kombination der elektrostatischen Trennung mit Schaumflotation und Kühlkristallisation gewonnen.
215	Verfahren zur Gewinnung von Magnesiumsulfaten	EP87115132.0	1987-10-16	EP0266599A2	1988-05-11	Singewald, Arno, Prof. Dr.; Neitzel, Ulrich, Dr.; Fricke, Günter, Dr.
Aus Hartsalzen werden zwei Magnesiumsulfat-Konzentrate bei vermindertem Abwasseranfall durch Kombination der elektrostatischen Trennung mit Schaumflotation und Kühlkristallisation gewonnen.
216	New, permanent flame retardant and anti-smouldering compositions	EP85104290.3	1985-04-09	EP0159615A2	1985-10-30	Sallay, Stephen I.
When alkali metal and/or alkaline earth metal tetraborates in a water suspension are suitably treated with ammonia and sulfuric acid, sulfurdioxide or phosphoric acid, they undergo a three-step transformation resulting in a mixture of ammoniumpentaborate, the corresponding alkali metal and/or alkaline earth metal salt(s): sulfate, sulfite or hydrophosphate and ammonia (Equation 1 ). Alternatively, tetraborates undergo the same threestep reactions upon their treatment with equimolar amounts of ammoniumsulfate, ammoniumsulfite or diammoniumhydrogenphosphate, while the liberated ammonia can be boiled off with distilling water This application deals with the discovery of highly effective permanent flame retardant compositions which also possess excellent antismoldering, noncorrosive and fungal resistant properties when properly applied on cellulosic fibers, cellulose-lignin fiber insulation materials.
217	Production of alkali metal sulfates	EP82300504.6	1982-02-01	EP0057608A1	1982-08-11	Sardisco, John B.; Drechsel, Erhart K.
A process is disclosed for the production of alkali metal sulfates from an aqueous solution containing alkali metal hydrogen sulfate which comprises contacting the aqueous solution of alkali metal hydrogen sulfate with a hydrophilic solvent, the hydrophilic solvent being effective to extract at least a portion of the sulfuric acid formed during the conversion of the alkali metal hydrogen sulfate to alkali metal sulfate in the solution together with at least a portion of the water present; permitting the alkali metal sulfate solid to crystallize; and recovering the solid alkali metal sulfate product. The hydrophilic solvent may then be extracted and separated from the sulfuric acid with a hydrophobic solvent and both solvents can be recovered and recycled.
218	SYSTEM FOR GENERATING H2S IN AN ALKALINE MEDIUM AND METHOD OF USING THE SAME	EP16881365.7	2016-12-23	EP3416913A1	2018-12-26	JALBOUT, Abraham Fouad
Method of producing hydrogen sulfide in an alkaline environment. A mixture having a sodium salt, elemental sulfur (S) and water is added to a reactor for the purpose of generating hydrogen sulfide (H2S) gas as the main product and sodium sulfate (Na2SO4) as a byproduct.
219	COMPLEXOMETRIC PRECURSOR FORMULATION METHODOLOGY FOR INDUSTRIAL PRODUCTION OF HIGH PERFORMANCE FINE AND ULTRAFINE POWDERS AND NANOPOWDERS FOR SPECIALIZED APPLICATIONS	EP14767613	2014-03-14	EP3245682A4	2018-08-01	FRIANEZA-KULLBERG TERESITA
A method of forming a powder MjXp wherein Mj is a positive ion or several positive ions selected from alkali metal, alkaline earth metal or transition metal; and Xp is a monoatomic or a polyatomic anion selected from Groups IIIA, IVA, VA, VIA or VIIA; called complexometric precursor formulation or CPF. The method includes the steps of: providing a first reactor vessel with a first gas diffuser and an first agitator; providing a second reactor vessel with a second gas diffuser and a second agitator; charging the first reactor vessel with a first solution comprising a first salt of Mj; introducing gas into the first solution through the first gas diffuser, charging the second reactor vessel with a second solution comprising a salt of Mp; adding the second solution to the first solution to form a complexcelle; drying the complexcelle, to obtain a dry powder; and calcining the dried powder of said MjXp.
220	CYCLIC PREPARATION METHOD FOR PRODUCING TITANIUM BORIDE FROM INTERMEDIATE FEEDSTOCK POTASSIUM-BASED TITANIUM-BORON-FLUORINE SALT MIXTURE AND PRODUCING POTASSIUM CRYOLITE AS BYPRODUCT	EP12195401.0	2012-12-04	EP2636645B1	2016-05-18	Chen, Xuemin; Yu, Yueming; Ye, Qingdong; Yang, Jun; Zhou, Zhi

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