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1. 发明授权

US2535730A Process for the treatment of waste liquors derived from cellulose manufacture 失效
标题翻译：用于处理衍生自纤维素制造的废液的方法
公开(公告)号：US2535730A
公开(公告)日：1950-12-26
申请号：US5164248
申请日：1948-09-28
申请人： GASCOGNE PAPETERIES
发明人： GADRET RENE H
IPC分类号： C01D7/30 , D21C11/12
CPC分类号： C01D7/30 , D21C11/125 , Y10S423/03

2. 发明申请

US20130248462A1 Selective Removal of Sulfide from Aqueous Alkali Solutions 有权
标题翻译：从碱性溶液中选择性去除硫化物
公开(公告)号：US20130248462A1
公开(公告)日：2013-09-26
申请号：US13896503
申请日：2013-05-17
申请人： FMC Wyoming Corporation
发明人： William C. Copenhafer
IPC分类号： C02F1/72
CPC分类号： C02F1/722 , C01D7/10 , C01D7/24 , C01D7/30
摘要： A method for removing sulfide from an aqueous alkali solution in which hydrogen peroxide is introduced into a sulfide-containing aqueous alkali solution associated with an alkali mineral recovery operation. The method is particularly useful for the processing of sulfide-containing aqueous alkali solutions containing NaHCO3 and Na2CO3, where bicarbonate in the sulfide-depleted alkali solution is decomposed to form Na2CO3, with concurrent evolution of gaseous carbon dioxide byproduct but without formation of gaseous H2S as a pollutant, and where Na2CO3 values are subsequently recovered from the sulfide-depleted carbonate-rich alkali solution via a crystallization operation.
摘要翻译：从与碱矿物质回收操作相关的含硫化物的碱性水溶液中引入过氧化氢的碱性水溶液中除去硫化物的方法。该方法特别适用于加工含硫酸盐的含有NaHCO 3和Na 2 CO 3的碱性水溶液，其中硫化氢贫化碱溶液中的碳酸氢盐分解形成Na 2 CO 3，伴随着气态二氧化碳副产物的逸出而不形成气态H 2 S 污染物，并且随后通过结晶操作从经硫化物贫乏的富含碳酸盐的碱溶液中回收Na 2 CO 3值。

3. 发明授权

US3717698A Manufacture of soda ash from wyoming trona 失效
标题翻译： SODA ASH从WYOMING TRONA制造
公开(公告)号：US3717698A
公开(公告)日：1973-02-20
申请号：US3717698D
申请日：1971-01-29
申请人： INTERMOUNTAIN RES & DEV CORP
发明人： ILARDI J , RAU E
IPC分类号： C01D7/24 , C01D7/30
CPC分类号： C01D7/30 , C01D7/24
摘要： Soda ash is prepared from crude trona containing organic impurities by calcining the crude trona to produce crude soda ash containing the organic impurities, dissolving the resultant anhydrous sodium carbonate in aqueous medium to produce a substantially saturated solution of sodium carbonate containing organics, and deactivating the organics with hydrogen peroxide, activated by sodium persulfate.
摘要翻译：通过煅烧粗天然碱以制备含有有机杂质的粗苏打灰，将所得无水碳酸钠溶解在水性介质中以产生基本上饱和的含碳酸钠的有机物溶液，并使有机物失活，由纯天然碱含有有机杂质制备纯碱与过氧化氢，由过硫酸钠活化。

4. 发明授权

US1984342A Purification of sodium carbonate 失效
标题翻译：纯化碳酸钠
公开(公告)号：US1984342A
公开(公告)日：1934-12-11
申请号：US67152333
申请日：1933-05-17
申请人： WEST END CHEMICAL COMPANY
发明人： HELLMERS HENRY D
IPC分类号： C01D7/30
CPC分类号： C01D7/30

5. 发明授权

US08858902B2 Selective removal of sulfide from aqueous alkali solutions 有权
标题翻译：从碱性水溶液中选择性除去硫化物
公开(公告)号：US08858902B2
公开(公告)日：2014-10-14
申请号：US13896503
申请日：2013-05-17
申请人： FMC Wyoming Corporation
发明人： William C. Copenhafer
IPC分类号： C01B17/00 , C01D7/10 , C01D7/30 , C02F1/72 , C01D7/24
CPC分类号： C02F1/722 , C01D7/10 , C01D7/24 , C01D7/30
摘要： A method for removing sulfide from an aqueous alkali solution in which hydrogen peroxide is introduced into a sulfide-containing aqueous alkali solution associated with an alkali mineral recovery operation. The method is particularly useful for the processing of sulfide-containing aqueous alkali solutions containing NaHCO3 and Na2CO3, where bicarbonate in the sulfide-depleted alkali solution is decomposed to form Na2CO3, with concurrent evolution of gaseous carbon dioxide byproduct but without formation of gaseous H2S as a pollutant, and where Na2CO3 values are subsequently recovered from the sulfide-depleted carbonate-rich alkali solution via a crystallization operation.
摘要翻译：从与碱矿物质回收操作相关的含硫化物的碱性水溶液中引入过氧化氢的碱性水溶液中除去硫化物的方法。该方法特别适用于加工含硫酸盐的含有NaHCO 3和Na 2 CO 3的碱性水溶液，其中硫化氢贫化碱溶液中的碳酸氢盐分解形成Na 2 CO 3，伴随着气态二氧化碳副产物的逸出而不形成气态H 2 S 污染物，并且随后通过结晶操作从经硫化物贫乏的富含碳酸盐的碱溶液中回收Na 2 CO 3值。

6. 发明授权

US08454840B1 Selective removal of sulfide from aqueous alkali solutions 有权
标题翻译：从碱性水溶液中选择性除去硫化物
公开(公告)号：US08454840B1
公开(公告)日：2013-06-04
申请号：US13407258
申请日：2012-02-28
申请人： Ann Copenhafer
发明人： William C. Copenhafer
IPC分类号： C01B17/00
CPC分类号： C02F1/722 , C01D7/10 , C01D7/24 , C01D7/30
摘要： A method for removing sulfide from an aqueous alkali solution in which hydrogen peroxide is introduced into a sulfide-containing aqueous alkali solution associated with an alkali mineral recovery operation. The method is particularly useful for the processing of sulfide-containing aqueous alkali solutions containing NaHCO3 and Na2CO3, where bicarbonate in the sulfide-depleted alkali solution is decomposed to form Na2CO3, with concurrent evolution of gaseous carbon dioxide byproduct but without formation of gaseous H2S as a pollutant, and where Na2CO3 values are subsequently recovered from the sulfide-depleted carbonate-rich alkali solution via a crystallization operation.
摘要翻译：从与碱矿物质回收操作相关的含硫化物的碱性水溶液中引入过氧化氢的碱性水溶液中除去硫化物的方法。该方法特别适用于加工含硫酸盐的含有NaHCO 3和Na 2 CO 3的碱性水溶液，其中硫化氢贫化碱溶液中的碳酸氢盐分解形成Na 2 CO 3，伴随着气态二氧化碳副产物的逸出而不形成气态H 2 S 污染物，并且随后通过结晶操作从经硫化物贫乏的富含碳酸盐的碱溶液中回收Na 2 CO 3值。

7. 发明申请

US20030143149A1 Sodium carbonate recovery from waste streams and impounded sodium carbonate decahydrate deposits 审中-公开
公开(公告)号：US20030143149A1
公开(公告)日：2003-07-31
申请号：US10061477
申请日：2002-01-31
发明人： Victor E. Braman , Marco A. Cortes , Falcon A. Price , Stephen T. Gaddis , Todd M. Lessard , James M. Shepard , Derral W. Smith
IPC分类号： C01D007/00
CPC分类号： C01D7/00 , C01D7/22 , C01D7/24 , C01D7/30
摘要： A process is described for recovering sodium carbonate or other sodium-based chemicals from sodium-bearing streams, including in particular mine water, evaporative pond water and sodium carbonate decahydrate deposits, recycle and purge streams, and other waste streams. In the process selected sodium bicarbonate-bearing streams are decarbonized to reduce the sodium bicarbonate concentration in a combination with other sodium-bearing streams, resulting in a liquor suitable as feed to a sodium carbonate decahydrate or sodium carbonate monohydrate process. The sodium bicarbonate concentration can be reduced using any number of known processes such as reacting said sodium bicarbonate with a neutralizing agent such as calcium oxide, calcium hydroxide, sodium hydroxide, or other alkali. Sodium bicarbonate can also be stripped using steam or air. The sodium bicarbonate reduced stream is combined with other sodium-bearing streams where the concentration is adjusted to form a liquor suitable to feed a sodium decahydrate or sodium carbonate monohydrate evaporation/crystallization step. Alternatively, the decarbonized stream can be concentrated using sodium carbonate decahydrate crystals formed from said sodium carbonate decahydrate process. Additionally, waste streams dilute in sodium carbonate concentration can be heated, especially with waste process heat, and recycled to existing sodium carbonate decahydrate deposits in evaporation ponds prior to combining said stream with other waste streams, purge streams, recycle streams, or sodium decahydrate crystals with the intention of recovering sodium carbonate from such streams and deposits and further processing the resulting liquor through an evaporation/crystallization step whereby various selected sodium carbonate salts are produced. The combination of the various sodium-bearing streams is decarbonized to below 3.5% sodium bicarbonate when fed to a sodium decahydrate process and to below 1% sodium bicarbonate when fed to a sodium carbonate monhydrate process. The feed streams are adjusted in sodium carbonate concentration by higher concentrated sodium carbonate-bearing streams or by addition of sodium carbonate decahydrate produced from said streams or recovered form evaporation pond deposits, are then processed to produce sodium carbonate decahydrate or sodium carbonate monohydrate or further processed to form other sodium carbonate salts.

8. 发明授权

US1403160A Process for obtaining potash from distillery waste by burning the same 失效
标题翻译：通过燃烧从酿酒废物获得钾肥的过程
公开(公告)号：US1403160A
公开(公告)日：1922-01-10
申请号：US35986120
申请日：1920-02-19
申请人： US IND ALCOHOL CO
发明人： HANER JR CARL
IPC分类号： C01D7/30 , C12F3/10
CPC分类号： C12F3/10 , C01D7/30

9. 发明授权

US07645435B2 Sodium carbonate recovery from waste streams and impounded sodium carbonate decahydrate deposits 失效
标题翻译：从废物流中回收碳酸钠和蓄积的碳酸钠十水合物沉积物
公开(公告)号：US07645435B2
公开(公告)日：2010-01-12
申请号：US10831859
申请日：2004-04-26
申请人： Victor E. Braman , Marco A. Cortes , Falcon A. Price , Stephen T. Gaddis , Todd M. Lessard , James M. Shepard , Derral W. Smith
发明人： Victor E. Braman , Marco A. Cortes , Falcon A. Price , Stephen T. Gaddis , Todd M. Lessard , James M. Shepard , Derral W. Smith
IPC分类号： C01D7/12
CPC分类号： C01D7/00 , C01D7/22 , C01D7/24 , C01D7/30
摘要： A process is described for recovering sodium carbonate or other sodium-based chemicals from sodium-bearing streams, including in particular mine water, evaporative pond water and sodium carbonate decahydrate deposits, recycle and purge streams, and other waste streams. In the process sodium bicarbonate-bearing streams are decarbonized to reduce the sodium bicarbonate concentration in a combination with other sodium-bearing streams, resulting in a liquor suitable as feed to a sodium carbonate decahydrate or sodium carbonate monohydrate process. The sodium bicarbonate stream is combined in a mix tank with other sodium carbonate bearing streams where the concentration is adjusted to form a liquor suitable to feed a sodium decahydrate or sodium carbonate monohydrate evaporation/crystallization step. In the process the combination of the various sodium-bearing streams is decarbonized to below 3.5% sodium bicarbonate when fed to a sodium decahydrate process and to below 1% sodium bicarbonate when fed to a sodium carbonate monohydrate process. The feed streams are adjusted in sodium carbonate concentration by higher concentrated sodium carbonate-bearing streams or by addition of sodium carbonate decahydrate produced from said streams or recovered form evaporation pond deposits, are then processed to produce sodium carbonate decahydrate or sodium carbonate monohydrate or further processed to form other sodium carbonate salts.
摘要翻译：描述了一种从含钠流中回收碳酸钠或其他钠基化学物质的方法，包括特别是矿井水，蒸发池水和碳酸钠十水合物沉积物，再循环和净化流以及其它废物流。在该过程中，将含碳酸氢钠的物流脱碳以与其它含钠物流组合降低碳酸氢钠浓度，得到适合作为碳酸钠十水合物或碳酸钠一水合物方法进料的液体。碳酸氢钠流在混合槽中与其他碳酸钠含量流合并，其中调节浓度以形成适于进料十水合钠或碳酸钠一水合物蒸发/结晶步骤的液体。在该过程中，当进料到十水碳酸钠方法中时，将各种含钠流的组合脱碳至低于3.5％的碳酸氢钠，并且当进料到碳酸钠一水合物方法时，将其低于1％的碳酸氢钠。进料流通过较高浓度的含碳酸钠流或通过加入由所述料流产生的回收形式的蒸馏池沉积物中的碳酸钠十水合物调节，然后加工以生产碳酸钠十水合物或碳酸钠一水合物或进一步加工以形成其它碳酸钠盐。

10. 发明授权

US3082060A Treatment of sodium carbonate 失效
标题翻译：碳酸钠处理
公开(公告)号：US3082060A
公开(公告)日：1963-03-19
申请号：US80512359
申请日：1959-04-09
申请人： PITTSBURGH PLATE GLASS CO
发明人： SNYDER STANLEY W
IPC分类号： C01D7/30
CPC分类号： C01D7/30

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