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公开(公告)号：US20180230018A1
公开(公告)日：2018-08-16
申请号：US15761896
申请日：2016-09-22
Applicant: Solvay SA
Inventor： James C. KISIELEWSKI , David M. HANSEN , Keith O. HAYES , Mayra MUCI-CASTANEDA , Alain VANDENDOREN
Abstract: A process for producing crystalline sodium bicarbonate, comprising: providing an aqueous sodium-bicarbonate containing liquor originating from a reactive crystallization step in which first sodium bicarbonate crystals are produced and recovered; feeding at least a portion of said aqueous sodium-bicarbonate containing liquor to a cooling crystallization unit to form second sodium bicarbonate crystals and produce a crystals slurry comprising the second sodium bicarbonate crystals; and withdrawing a portion of the crystals slurry from the cooling crystallization unit for the withdrawn second sodium bicarbonate crystals to be further processed. A portion of the second sodium bicarbonate crystals withdrawn from the cooling crystallization unit may be fed to a sodium bicarbonate reactive crystallization unit, to a caustic unit, or may be separated and dried. The reactive crystallization, separation and/or drying units where the second sodium bicarbonate crystals are further processed may be the same units where the first sodium bicarbonate crystals are processed.
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公开(公告)号：US20140174673A1
公开(公告)日：2014-06-26
申请号：US14132149
申请日：2013-12-18
Applicant: SOLVAY SA
Inventor： Alain VANDENDOREN , Jessica A. MOTE
CPC classification number: C01D7/22 , B01D1/16 , B01D1/18 , B01D1/20 , B65G5/00 , C01D5/18 , C01D7/24 , C02F1/12 , C02F2103/10 , E21B43/28
Abstract: A method for increasing the evaporation rate of an evaporative pond containing pond liquor comprising water and at least 1% by weight of sodium carbonate, said evaporative pond being in contact with an ambient air at an ambient air temperature of more than 0° C., the method comprising the following steps: feeding part of the pond liquor to a heat exchanger; heating the pond liquor in the heat exchanger with heat and producing a heated pond liquor; feeding the heated pond liquor into a spraying device at an operating temperature of at least 10° C. above the ambient air temperature; and spraying the heated pond liquor into an open area of the evaporative pond with the spraying device, so as to evaporate at least part of the water of the pond liquor when sprayed.
Abstract translation: 一种用于增加包含水和至少1重量％碳酸钠的池塘液体的蒸发池的蒸发速率的方法，所述蒸发池在大于0℃的环境空气温度下与环境空气接触， 该方法包括以下步骤：将部分池液输送到热交换器; 用热量加热换热器中的池液，产生加热的池液; 在高于环境空气温度的至少10℃的操作温度下将加热的池液投入喷射装置中; 并用喷雾装置将加热的池液喷射到蒸发池的开放区域，以便在喷洒时蒸发池液的至少一部分水。
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公开(公告)号：US20150132203A1
公开(公告)日：2015-05-14
申请号：US14537974
申请日：2014-11-11
Applicant: SOLVAY SA
Inventor： Alain VANDENDOREN
Abstract: A method for treating a purge stream derived from a sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer,said purge stream comprising sodium carbonate and/or sodium bicarbonate and at least 1% by weight of sodium chloride and/or sodium sulfate, the method comprising: causticizing at least 50 mol. % of the sodium from sodium carbonate and/or sodium bicarbonate into a caustic solution and into a calcium carbonate mud with lime and water, separating the calcium carbonate mud from the caustic solution; concentrating the caustic solution by removing part of the water to obtain a concentrated caustic solution comprising at least 25% NaOH, and a crystallized solid comprising sodium carbonate and sodium chloride and/or sulfate, separating the crystallized solid from the concentrated caustic solution, said crystallized solid to be disposed of or to be further valorized, recycling part of the concentrated caustic solution to the sodium carbonate, sesquicarbonate, wegsheiderite, or bicarbonate crystallizer.
Abstract translation: 一种用于处理源自碳酸钠，倍半碳酸盐，weigheiteite或碳酸氢盐结晶器的吹扫流的方法，所述吹扫流包含碳酸钠和/或碳酸氢钠和至少1重量％的氯化钠和/或硫酸钠，该方法 包括：苛化至少50mol。 将钠从碳酸钠和/或碳酸氢钠中的百分比转化成苛性碱溶液，并用石灰和水分离成碳酸钙泥浆，将碳酸钙泥浆与苛性碱溶液分离; 通过除去一部分水来浓缩苛性碱溶液以获得包含至少25％NaOH的浓缩苛性碱溶液，以及包含碳酸钠和氯化钠和/或硫酸盐的结晶固体，将结晶的固体与浓碱溶液分离，所述结晶 将固体处理或进一步加价，将部分浓缩的苛性碱溶液再循环到碳酸钠，倍半碳酸盐，wegeheiteite或碳酸氢盐结晶器中。
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公开(公告)号：US20210070620A1
公开(公告)日：2021-03-11
申请号：US16953404
申请日：2020-11-20
Applicant: SOLVAY SA
Inventor： Alain VANDENDOREN
Abstract: A method for producing a concentrated aqueous sodium hydroxide solution from a purge stream deriving from a sodium carbonate, or sesquicarbonate, or wegsheiderite crystallizer, or sodium bicarbonate crystallizer, said purge stream comprising sodium carbonate and/or bicarbonate, and at least 1% of sodium chloride or sodium sulfate and a soluble impurity from an ore deposit comprising at least one of the following elements: As, Ba, B, Ca, Co, K, Li, Mo, P, Pb, Se, Sn, Sr, Te, Tl, Ti, V, and W, to be purified, the method comprising: causticizing at least 50 mol. % of the sodium carbonate into a caustic solution and into a calcium carbonate mud with lime and water; separating the mud from the caustic solution; concentrating the caustic solution by removing part of the water to obtain a concentrated caustic solution comprising at least 25% NaOH, and a crystallized solid comprising sodium carbonate and sodium chloride and/or sulfate; and separating the crystallized solid from the concentrated caustic solution, said crystallized solid to be disposed of or to be further valorized.
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5.发明申请Method for increasing evaporation rate of an evaporative pond using solar energy 有权使用太阳能提高蒸发池蒸发速率的方法公开(公告)号：US20140178288A1
公开(公告)日：2014-06-26
申请号：US14132183
申请日：2013-12-18
Applicant: SOLVAY SA
Inventor： Alain VANDENDOREN , Jessica A. MOTE
CPC classification number: C01D7/24 , B01D1/0035 , B01D1/0058 , B01D1/14 , C02F1/12 , C02F1/14 , C02F2103/10 , Y02A20/212 , Y02W10/37
Abstract: A method for increasing the evaporation rate of an evaporative pond comprising a pond liquor comprising water and at least 1% by weight of sodium carbonate, said evaporative pond being in contact with an ambient air at an ambient air temperature of more than 0° C., the method comprising the following steps: feeding part of the pond liquor to a heat exchanger; heating the pond liquor in the heat exchanger with heat and producing a heated pond liquor; feeding the heated pond liquor into a spraying device at a temperature called hereafter ‘operating temperature’ of at least 10° C. above the ambient air temperature; and spraying the heated pond liquor into an open area of the evaporative pond with the spraying device, so as to evaporate at least part of the water of the pond liquor when sprayed.
Abstract translation: 一种用于增加蒸发池的蒸发速率的方法，其包括含有水和至少1重量％碳酸钠的池液，所述蒸发池在环境空气温度大于0℃下与环境空气接触。 该方法包括以下步骤：将部分池液输送到热交换器; 用热量加热换热器中的池液，产生加热的池液; 将加热的池液投入喷射装置中，其温度至少比环境空气温度高10℃; 并用喷雾装置将加热的池液喷射到蒸发池的开放区域，以便在喷洒时蒸发池液的至少一部分水。
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Patent Agency Ranking
公开(公告)号：US20130156662A1
公开(公告)日：2013-06-20
申请号：US13716581
申请日：2012-12-17
Applicant: SOLVAY SA
Inventor： Hugo WALRAVENS , Kurt ALLEN , Thoi-Dai CHAU , Alain VANDENDOREN
IPC: C22B26/10
Abstract: A process for producing sodium bicarbonate from a sodium carbonate bearing stream (A) comprising at least 2% sodium chloride and/or sodium sulfate by weight, a part of such stream (A) being generated by a sodium carbonate crystallizer, comprising: a) mixing the stream (A) with part of a stream (B) to produce a stream (C); b) bicarbonating the stream (C) with a gas (D) comprising CO2 to produce an aqueous suspension (E) containing crystals (F) comprising sodium bicarbonate crystals; c) separating the aqueous suspension (E) to obtain crystals (F) comprising sodium bicarbonate crystals and an aqueous mother liquor (G); d) partly debicarbonating such liquor (G) and removing part of the water to obtain the stream (B) and an optional gas (H); e) recycling at least part of the stream (B) to step a); and f) removing the remainder of the stream (B) or part of the aqueous mother liquor (G) to be further processed.
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公开(公告)号：US20170183237A1
公开(公告)日：2017-06-29
申请号：US15456008
申请日：2017-03-10
Applicant: SOLVAY SA
Inventor： Alain VANDENDOREN
Abstract: Concentrated aqueous sodium hydroxide solution comprising: at least 25% by weight of NaOH, sodium chloride (NaCl) and/or sodium sulfate (Na2SO4), and one soluble impurity from a sodium carbonate or bicarbonate ore deposit, said soluble impurity being selected among: As, Ba, B, Ca, Co, K, Li, Mg, Mo, P, Pb, Se, Si, Sr, Te, Tl, Ti, V, W, and the soluble impurity being in specific concentrations ranges. And process for producing such concentrated aqueous sodium hydroxide solution by treating a purge stream comprising sodium carbonate or bicarbonate.
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公开(公告)号：US20150315893A1
公开(公告)日：2015-11-05
申请号：US14651338
申请日：2013-12-12
Applicant: SOLVAY SA
Inventor： Pierre GILLIARD , Alain VANDENDOREN
Abstract: Process for recovering soda values from first and second soda deposits situated respectively in first and second underground cavities containing respectively first and second soda solutions, the second soda solution containing a higher concentration in sodium chloride and/or sodium sulfate than the first soda solution, the process comprising: extracting a stream of first soda solution from the first cavity; introducing the stream of first soda solution in a first process which produces first soda crystals and a first waste purge stream containing a higher concentration in sodium chloride and/or in sodium sulfate than the first soda solution; introducing at least part of the first waste purge stream in the second cavity; extracting a stream of second soda solution from the second cavity; and introducing the stream of second soda solution in a second process which produces second soda crystals which have a higher concentration in sodium chloride and/or sodium sulfate than the first soda crystals.
Abstract translation: 分别位于分别包含第一和第二苏打溶液的第一和第二地下腔中的第一和第二苏打沉积物的苏打值的第二苏打溶液的含量比第一苏打溶液含有较高浓度的氯化钠和/或硫酸钠的方法， 方法包括：从第一腔中提取第一苏打溶液流; 在产生第一苏打晶体的第一方法和在第一苏打溶液中含有较高浓度的氯化钠和/或硫酸钠的第一废物清除流中引入第一苏打溶液流; 将第一废物吹扫流中的至少一部分引入第二腔中; 从第二腔中提取第二苏打溶液流; 并在第二种方法中引入第二苏打溶液流，该方法产生在第一苏打晶体中在氯化钠和/或硫酸钠中具有较高浓度的第二苏打晶体。
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9.发明申请Process for producing sodium carbonate from an ore mineral comprising sodium bicarbonate 审中-公开从包含碳酸氢钠的矿石矿石生产碳酸钠的方法公开(公告)号：US20150315675A1
公开(公告)日：2015-11-05
申请号：US14650099
申请日：2013-12-05
Applicant: SOLVAY SA
Inventor： Alain VANDENDOREN
Abstract: Process to produce sodium carbonate from an ore mineral comprising sodium bicarbonate, comprising: dissolving sodium carbonate particles having a mean diameter D50, measured by sieve analysis, less than 250 μm in a water solution; introducing the resulting production solution comprising sodium carbonate into less basic compartments of an electrodialyser comprising alternating less basic and more basic adjacent compartments separated from each other by cationic membranes; producing a solution comprising sodium hydroxide into the more basic compartments; extracting the solution comprising sodium hydroxide from the more basic compartments of the electrodialyser and used to constitute a reaction solution; and putting the reaction solution into contact with the mineral ore comprising sodium bicarbonate in order to form a produced solution comprising sodium carbonate.
Abstract translation: 包含碳酸氢钠矿物矿石生产碳酸钠的方法，包括：通过筛分分析，将平均直径D50的碳酸钠颗粒溶解在水溶液中小于250μm; 将所得的包含碳酸钠的生产溶液引入到电离渗析器的较不碱性的隔室中，所述隔室包含由阳离子膜彼此分离的交替的较少碱性和更碱性的邻近隔室; 产生包含氢氧化钠的溶液到更碱性的隔室中; 从电渗析器的更碱性隔室中萃取包含氢氧化钠的溶液，并用于构成反应溶液; 并将反应溶液与包含碳酸氢钠的矿石矿相接触，以形成包含碳酸钠的生产溶液。
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公开(公告)号：US20130171048A1
公开(公告)日：2013-07-04
申请号：US13726005
申请日：2012-12-21
Applicant: SOLVAY SA
Inventor： James D. PHILLIP , Alain VANDENDOREN
CPC classification number: E21B43/28 , C01D7/12 , C01D7/126 , E21B43/281 , E21B43/283 , E21B43/34
Abstract: A solution mining method for recovering alkali values from a cavity of an underground ore formation comprising trona and/or wegscheiderite; a manufacturing process using such method to make sodium-based product(s); and a sodium-based product obtained therefrom. The method comprises: an ore dissolution phase (a) in which the incongruent double-salt in trona and/or wegscheiderite is dissolved from an ore face in a first solvent, and a cavity cleaning phase (b) in which sodium bicarbonate deposited on the ore face during the dissolution phase (a) is dissolved into a second aqueous solvent having a higher pH, hydroxide content, and/or temperature and is partly or completely converted in situ to sodium carbonate. The method further comprises withdrawing a liquor resulting from either phase to the ground surface, optionally recycling some liquor to the cavity; and passing some liquor through a crystallizer, a reactor, and/or an electrodialyser, to form at least one sodium-based product which is recovered.
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