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公开(公告)号：US20180050916A1
公开(公告)日：2018-02-22
申请号：US15538774
申请日：2015-12-22
申请人： SOLVAY SA
发明人： Eric VANDERVORST , David Jean Lucien SAVARY , Gérard DUPONT , Hugo WALRAVENS , Eric DUBOIS , Jean-Paul COQUEREL , Perrine DAVOINE , Karine CAVALIER , Ines HURTADO DOMINGEZ , Salvador ASENSIO
CPC分类号： C01B32/60 , B01D53/002 , B01D53/0462 , B01D53/047 , B01D53/22 , B01D53/64 , B01D2256/22 , B01D2257/504 , B01D2258/02 , B01D2258/0283 , C01D7/12 , C01D7/18 , Y02C10/08 , Y02C10/10 , Y02P20/152
摘要： Process for producing sodium carbonate with ammonia and/or for producing refined sodium bicarbonate, wherein: a low CO2 content gas generated by a unit for producing sodium carbonate with ammonia and/or generated by a unit for producing refined sodium bicarbonate is enriched into a CO2-enriched gas by using a CO2 concentration module, such as an amine-type or ammonia or PSA or TSA or cryogenic distillation or membrane-type CO2 concentration module, and said CO2-enriched gas has an increased CO2 content of: +10% (at least) to +90% (at most), by volume on a dry gas basis relative to the CO2 concentration of the low content gas, and the CO2-enriched gas is subsequently recycled to the unit for producing sodium carbonate with ammonia and/or to the unit for producing refined sodium bicarbonate, to produce sodium carbonate, or sodium bicarbonate, or to carbonate at least one part of effluent from the unit for producing sodium carbonate and/or from the unit for producing sodium bicarbonate.
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公开(公告)号：US09174165B1
公开(公告)日：2015-11-03
申请号：US14471422
申请日：2014-08-28
发明人： Sanjay Kumar Dube
CPC分类号： B01D53/50 , B01D53/40 , B01D53/504 , B01D53/508 , B01D53/62 , B01D53/68 , B01D53/685 , B01D53/80 , B01D53/81 , B01D53/83 , B01D53/96 , B01D2251/304 , B01D2251/404 , B01D2253/112 , B01D2257/2045 , B01D2257/2047 , B01D2257/302 , B01D2257/504 , B01D2258/0283 , C01D1/20 , C01D5/00 , C01D7/07 , C01D7/12 , C01F11/46 , F23J15/003 , F23J2219/50 , Y02C10/04 , Y02E20/326 , Y02P20/152
摘要： A system and method for desulfurization or acidic gas removal from a hot flue gas is provided that uses a dry sorbent injection technology with downstream sorbent reproduction based on a dual-alkali process. As such, lime and flue gas carbon dioxide are used in a process to produce the dry sorbent, sodium bicarbonate.
摘要翻译： 提供了一种用于从热烟道气中脱硫或酸性气体去除的系统和方法，其使用基于双碱工艺的具有下游吸附剂再生的干吸附剂注入技术。 因此，在生产干燥吸附剂碳酸氢钠的方法中使用石灰和烟道气二氧化碳。
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公开(公告)号：US07682588B2
公开(公告)日：2010-03-23
申请号：US10556604
申请日：2004-05-19
申请人： Paul Demilie
发明人： Paul Demilie
IPC分类号： C01D7/12
摘要： Process for the manufacture of sodium carbonate crystals comprising: the addition of solid sodium carbonate (1) to an aqueous solution comprising sodium bicarbonate and sodium carbonate; the crystallization and the separation of sodium sesquicarbonate crystals; (B, C) the crystallization of sodium carbonate crystals, (E) the amount of sodium carbonate added being adjusted so that the crystallization of sesquicarbonate crystals can be carried out without preliminary evaporation of the aqueous suspension.
摘要翻译： 包括：将固体碳酸钠（1）加入到包含碳酸氢钠和碳酸钠的水溶液中的方法; 倍半碳酸钠晶体的结晶和分离; （B，C）碳酸钠晶体的结晶，（E）调节碳酸钠的添加量，使得倍半碳酸盐晶体的结晶可以在不预先蒸发水性悬浮液的情况下进行。
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公开(公告)号：US07410627B2
公开(公告)日：2008-08-12
申请号：US11340444
申请日：2006-01-25
申请人： Max E. Ramey , John S. McEwan , Kevin L. Green , Charles L. Yates , Allan L. Turner , Michael A. Rockendal , Irvin P. Nielsen , Michael P. Hardy , Rex Goodrich
发明人： Max E. Ramey , John S. McEwan , Kevin L. Green , Charles L. Yates , Allan L. Turner , Michael A. Rockendal , Irvin P. Nielsen , Michael P. Hardy , Rex Goodrich
IPC分类号： C01B7/00
CPC分类号： C01D7/12 , C01D7/126 , C01D7/35 , E21B43/281 , E21B43/283
摘要： A method for solution mining nahcolite, capable of extracting nahcolite from geological formations lean in nahcolite comprising injecting high pressure water (which may include recycled aqueous solution of bicarb and sodium carbonate) at a temperature of at least 250° F. into the formation, dissolving nahcolite in the hot water to form a production solution and recovering the production solution. The invention also includes the processing of the production solution to provide sodium carbonate and, optionally, sodium bicarbonate, comprising: decomposing the sodium bicarbonate portion of the hot aqueous production solution to form a hot aqueous solution of sodium carbonate; evaporating water from the hot aqueous solution comprising sodium carbonate to form a concentrated solution of sodium carbonate; producing sodium carbonate monohydrate from the concentrated solution of sodium carbonate by crystallization; and dewatering and calcining the sodium carbonate monohydrate to produce anhydrous sodium carbonate.
摘要翻译： 一种溶液开采砂浆的方法，该方法能够从属于黑藻土的地质层中提取砂浆，包括在至少250°F的温度下将高压水（其可以包括再循环的碳酸氢二水溶液）注入到地层中，溶解 nahcolite在热水中形成生产解决方案并回收生产解决方案。 本发明还包括处理生产溶液以提供碳酸钠和任选的碳酸氢钠，其包括：分解热水生产溶液的碳酸氢钠部分以形成热的碳酸钠水溶液; 从包含碳酸钠的热水溶液中蒸发水以形成碳酸钠的浓缩溶液; 通过结晶从碳酸钠浓缩液中生成碳酸钠一水合物; 并对碳酸钠一水合物进行脱水和煅烧以制备无水碳酸钠。
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公开(公告)号：US20070140945A1
公开(公告)日：2007-06-21
申请号：US11640791
申请日：2006-12-18
申请人： William Copenhafer
发明人： William Copenhafer
IPC分类号： C01F5/24
摘要： A process for the production and recovery of crystalline sodium sesquicarbonate and of crystalline sodium carbonate monohydrate from aqueous liquors containing sodium carbonate and sodium bicarbonate. The crystalline products may optionally be heated or calcined to produce soda ash. The process is particularly suited for the recovery of soda ash from aqueous minewater streams obtained from solution mining of subterranean trona ore deposits.
摘要翻译： 从含有碳酸钠和碳酸氢钠的含水液体中生产和回收结晶倍半碳酸钠和结晶碳酸钠一水合物的方法。 结晶产物可任选地被加热或煅烧以产生纯碱。 该方法特别适用于通过从地下天然碱矿床的溶液开采获得的含水小水流中回收苏打灰。
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6.发明申请公开(公告)号：US20040026982A1
公开(公告)日：2004-02-12
申请号：US10622162
申请日：2003-07-15
申请人： American Soda, LLP
发明人： Max E. Ramey , John S. McEwan , Kevin L. Green , Charles L. Yates , Allan L. Turner , Michael A. Rockendal , Irvin P. Nielsen , Michael P. Hardy , Rex Goodrich
IPC分类号： E21B001/00
CPC分类号： C01D7/12 , C01D7/126 , C01D7/35 , E21B43/281 , E21B43/283
摘要： A method for solution mining nahcolite, capable of extracting nahcolite from geological formations lean in nahcolite comprising injecting high pressure water (which may include recycled aqueous solution of bicarb and sodium carbonate) at a temperature of at least 250null F. into the formation, dissolving nahcolite in the hot water to form a production solution and recovering the production solution. The invention also includes the processing of the production solution to provide sodium carbonate and, optionally, sodium bicarbonate, comprising: decomposing the sodium bicarbonate portion of the hot aqueous production solution to form a hot aqueous solution of sodium carbonate; evaporating water from the hot aqueous solution comprising sodium carbonate to form a concentrated solution of sodium carbonate; producing sodium carbonate monohydrate from the concentrated solution of sodium carbonate by crystallization; and dewatering and calcining the sodium carbonate monohydrate to produce anhydrous sodium carbonate.
摘要翻译： 一种溶液开采砂浆的方法，该方法能够从属于黑藻土的地质层中提取砂浆，包括在至少250°F的温度下将高压水（其可以包括再循环的碳酸氢二水溶液）注入到地层中，溶解 nahcolite在热水中形成生产解决方案并回收生产解决方案。 本发明还包括处理生产溶液以提供碳酸钠和任选的碳酸氢钠，其包括：分解热水生产溶液的碳酸氢钠部分以形成热的碳酸钠水溶液; 从包含碳酸钠的热水溶液中蒸发水以形成碳酸钠的浓缩溶液; 通过结晶从碳酸钠浓缩液中生成碳酸钠一水合物; 并对碳酸钠一水合物进行脱水和煅烧以制备无水碳酸钠。
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公开(公告)号：US06514475B1
公开(公告)日：2003-02-04
申请号：US09203270
申请日：1998-12-01
IPC分类号： C01D700
摘要： The invention is directed to a process for the production of sodium carbonate-anhydrate having a bulk density of at least 800 kg/m3, said process comprising: providing a suspension of solid sodium carbonate and/or solid sodium bicarbonate and/or solid double salts at least comprising one of sodium carbonate and sodium bicarbonate, in a mixture containing water and an organic, water miscible or partly water miscible solvent, which solvent influences the transition temperature below which sodium carbonate monohydrate is stable, whereby the type and the amount of solvent is selected in such way that the said transition temperature is below the boiling point of the said mixture of water and an organic, water miscible or partly water miscible solvent, in case sodium bicarbonate is present, converting the bicarbonate into carbonate, crystallising sodium carbonate anhydrate from said mixture at a temperature above the said transition temperature and below the said boiling point, and recovering the sodium carbonate anhydrate.
摘要翻译： 本发明涉及生产体积密度为至少800kg / m 3的无水碳酸钠的方法，所述方法包括：提供固体碳酸钠和/或固体碳酸氢钠和/或固体双重盐的悬浮液 至少包含碳酸钠和碳酸氢钠之一，在含水和有机，水混溶或部分水混溶性溶剂的混合物中，该溶剂影响低于该转化温度的碳酸钠一水合物是稳定的，由此溶剂的类型和量 选择以使得所述转变温度低于所述水混合物和有机的，水混溶性的或部分水混溶性溶剂的沸点，在存在碳酸氢钠的情况下，将碳酸氢盐转化为碳酸盐，结晶的碳酸钠水合物 在高于所述转变温度并低于所述沸点的温度下从所述混合物中回收 e碳酸钠无水物。
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公开(公告)号：US20030007923A1
公开(公告)日：2003-01-09
申请号：US09880342
申请日：2001-06-13
IPC分类号： C01D007/24
摘要： A method for converting sodium bicarbonate in a sodium carbonate monohydrate crystallization process to maintain a mother liquor composition in a sodium carbonate monohydrate crystallizer below the invariant point for the crystallizer for reducing or eliminating the co-crystallization of sodium sesquicarbonate crystals in the process. The mother liquor composition may be maintained below the invariant point by stripping carbon dioxide from a feed solution or from mother liquor recycled to the crystallizer.
摘要翻译： 一种在碳酸钠一水合物结晶方法中转化碳酸氢钠的方法，以将碳酸钠一水合物结晶器中的母液组合物保持在结晶器的不变点以下，用于在该过程中减少或消除倍半碳酸钠晶体的共结晶。 通过从进料溶液中或从再循环到结晶器的母液中除去二氧化碳，可以将母液组合物保持在不变点以下。
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公开(公告)号：US4252781A
公开(公告)日：1981-02-24
申请号：US26449
申请日：1979-04-02
摘要： A thick suspension of sodium carbonate anhydride is obtained by countercurrent contacting of a high pressure steam and a suspension of sodium bicarbonate or sodium sesquicarbonate in a concentrated solution of sodium carbonate. The decomposition reaction is promoted to near completion by maintaining the reaction temperature above 150.degree. C. to realize a high HCO.sub.3.sup.- ion concentration in the solution. The sodium carbonate anhydride suspension is cooled to cause transition of the anhydride to the monohydrate, followed by the separation of the crystalline monohydrate from the mother liquor. Calcination of this monohydrate gives a dense soda ash featuring a high purity and a uniform particle size, while the mother liquor is recycled for the preparation of the sodium bicarbonate suspension.
摘要翻译： 通过高压蒸汽和碳酸氢钠或倍半碳酸钠的混悬液在碳酸钠浓缩液中的逆流接触获得浓碳酸酐酐的浓悬浮液。 通过保持反应温度高于150℃，使分解反应促进到接近完成，以在溶液中实现高HCO3-离子浓度。 将碳酸钠酸酐悬浮液冷却以使酸酐转化为一水合物，然后从母液中分离结晶一水合物。 该一水合物的煅烧产生具有高纯度和均匀粒度的致密苏打灰，同时将母液循环用于制备碳酸氢钠悬浮液。
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公开(公告)号：US3184287A
公开(公告)日：1965-05-18
申请号：US14309961
申请日：1961-10-05
申请人： FMC CORP
发明人： GANCY ALAN B
IPC分类号： C01D7/12
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