公开(公告)号：US4575419A

公开(公告)日：1986-03-11

申请号：US689422

申请日：1985-01-07

申请人： John A. Peterson ,  Mohan S. Saran ,  Joseph S. Wisnouskas

发明人： John A. Peterson ,  Mohan S. Saran ,  Joseph S. Wisnouskas

IPC分类号： B03D1/002 ,  B03D1/02

CPC分类号： B03D1/002 ,  B03D2201/02 ,  Y10S430/165

摘要： A dry differential flotation reagent for molybdenum-bearing ore is disclosed comprising from about 1 to about 30 percent by weight of NaSH, 0 to 20 percent by weight of NaOH, 60 to 90 percent by weight of a mixture of sodium thiophosphates comprising, as major components thereof, Na.sub.3 PS.sub.4, Na.sub.3 PS.sub.3 O, Na.sub.3 PS.sub.2 O.sub.2, and Na.sub.3 PO.sub.3 S, with Na.sub.3 PS.sub.4 further comprising from about 15 mole percent to about 70 mole percent of phosphate mixture. The flotation reagent can be prepared by reacting P.sub.4 S.sub.10 with NaOH and NaSH in a molar ratio of about 1:16. When added to a flotation vessel containing molybdenum concentrate, the flotation reagent promotes suppression of lead and copper sulfides, even without the addition of sodium cyanide, to permit the improved recovery of molybdenum with a lower level of impurities.

摘要翻译： 公开了一种用于含钼矿石的干差示浮选试剂，其包含约1至约30重量％的NaSH，0至20重量％的NaOH，60至90重量％的硫代磷酸钠混合物，其包含主要 Na 3 PS 4，Na 3 PS 3 O，Na 3 PS 2 O 2和Na 3 PO 3 S，其中Na 3 PS 4还包含约15摩尔％至约70摩尔％的磷酸盐混合物。 浮选剂可以通过使P4S10与NaOH和NaSH以约1:16的摩尔比反应制备。 当添加到含有钼精矿的浮选容器时，浮选试剂即使没有添加氰化钠也促进铅和硫化铜的抑制，以允许以较低水平的杂质改善钼的回收。

公开(公告)号：US06620396B2

公开(公告)日：2003-09-16

申请号：US09859254

申请日：2001-05-17

申请人： Mohan S. Saran

发明人： Mohan S. Saran

IPC分类号： C01B2504

CPC分类号： C02F11/00 ,  C01B25/02 ,  C02F1/001 ,  C02F1/02 ,  C02F1/38 ,  C02F1/58 ,  C02F2101/105 ,  Y10S210/906

摘要： A method of recovering elementary phosphorus from an aqueous sludge containing about 1 to about 15 wt % dispersed particles of phosphorus is disclosed. To the sludge is added about 1 to about 20 wt %, based on the weight of the phosphorus present in said sludge, of a phosphate salt that has the general formula: where R is an alkali metal or ammonium and n is 0 to 30. The phosphorus in the sludge is melted and the solids in the sludge are separated from liquid phosphorus and water. Liquid phosphorus is then separated from the water.

摘要翻译： 公开了从含有约1至约15重量％的磷分散颗粒的含水污泥中回收元素磷的方法。 基于所述污泥中存在的磷的重量，向污泥中加入约1至约20重量％的具有以下通式的磷酸盐：其中R为碱金属或铵，n为0至30。 污泥中的磷被熔化，污泥中的固体与液态磷和水分离。 然后将液体磷与水分离。

公开(公告)号：US5382745A

公开(公告)日：1995-01-17

申请号：US235738

申请日：1994-04-29

申请人： Ronald F. Spohn ,  Mohan S. Saran

发明人： Ronald F. Spohn ,  Mohan S. Saran

IPC分类号： C07C7/00

CPC分类号： C07C7/00 ,  C07C2101/16

摘要： Disclosed is a method of separating a butadiene extracting solvent that forms an azeotrope with vinylcyclohexene from a mixture with vinylcyclohexene. The mixture is cooled to a temperature below 0.degree. C. which results in the formation of a vinylcyclohexene phase over an extracting solvent phase and the two phases are physically separated. Also disclosed is apparatus suitable for performing this process.

摘要翻译： 公开了与乙烯基环己烯的混合物与乙烯基环己烯形成共沸物的丁二烯提取溶剂的方法。 将混合物冷却至低于0℃的温度，这导致在萃取溶剂相上形成乙烯基环己烯相，两相物理分离。 还公开了适于执行该过程的装置。

公开(公告)号：US06251352B1

公开(公告)日：2001-06-26

申请号：US09371284

申请日：1999-08-10

申请人： Mohan S. Saran ,  James R. Brooks ,  David C. Potts

发明人： Mohan S. Saran ,  James R. Brooks ,  David C. Potts

IPC分类号： C01B2501

摘要： Disclosed is a method of recovering elemental phosphorus from a sludge that contains water, dirt, and elemental phosphorus. In the first step, the sludge is melted. A mixture is formed of the melted sludge and about 0.5 to about 3 wt % of an oxidizing agent, based on the weight of said elemental phosphorus in the sludge, and about 75 to about 400 wt % water, based on the weight of the sludge. The mixture is stirred until a continuous elemental phosphorus phase forms. The purified phosphorus phase is separated from the mixture.

公开(公告)号：US5001250A

公开(公告)日：1991-03-19

申请号：US358226

申请日：1989-05-30

申请人： Mohan S. Saran

发明人： Mohan S. Saran

IPC分类号： C09K3/00 ,  C07F9/02 ,  C07F9/32 ,  C07F9/40 ,  C07F9/53

CPC分类号： C07F9/4006 ,  C07F9/025 ,  C07F9/5304

摘要： Crude N,N-dialkylcarbamoylmethylphosphonates and phosphine oxide extractants, and particularly crude dihexyl N,N-diethylcarbamoylmethylphosphonate and octylphenyl N,N-diisobutylcarbamoyl phosphine oxide, are purified by distilling the crude materials in a thin film evaporator. Preferably, the crude dihexyl N,N-diethylcarbamoylmethylphosphonate is reacted with concentrated hydrochloric acid and subsequently reacted with aqueous sodium hydroxide prior to distillation in the thin film evaporator to hydrolyze impurities contained in the crude product. The purified extractants are useful for extracting actinides and lanthanides from liquid waste streams.

摘要翻译： 粗的N，N-二烷基氨基甲酰基甲基膦酸酯和氧化膦萃取剂，特别是粗的二己基N，N-二乙基氨基甲酰甲基膦酸酯和辛基苯基N，N-二异丁基氨基甲酰氧基氧化物，通过在薄膜蒸发器中蒸馏粗物质来纯化。 优选地，将粗二己基N，N-二乙基氨基甲酰甲基膦酸酯与浓盐酸反应，随后在薄膜蒸发器中蒸馏之前与氢氧化钠水溶液反应，以水解粗产物中所含的杂质。 纯化的萃取剂可用于从液体废液流中提取锕系元素和镧系元素。

公开(公告)号：US4533762A

公开(公告)日：1985-08-06

申请号：US545018

申请日：1983-10-24

申请人： Donald H. Campbell ,  Michael J. Fifolt ,  Mohan S. Saran

发明人： Donald H. Campbell ,  Michael J. Fifolt ,  Mohan S. Saran

IPC分类号： C07C41/05 ,  C07C17/272 ,  C07C19/10 ,  C07C19/12 ,  C07C41/00 ,  C07C41/06 ,  C07C43/12 ,  C07C67/00 ,  C10M105/50 ,  C10N40/08 ,  C07C179/00 ,  C07C43/00

CPC分类号： C07C43/123 ,  C07C17/272 ,  C07C19/10 ,  C07C19/12 ,  C07C41/06 ,  C07C43/126

摘要： A telomerization process comprises reacting chlorotrifluoroethylene with bisfluoroxydifluoromethane. The telomerization reaction is conducted in either liquid chlorotrifluoroethylene without a solvent or in solution. The telomers thus formed can optionally be fluorinated by reaction with a suitable fluorinating agent to improve their stability.

摘要翻译： 调聚方法包括使氯三氟乙烯与双氟二氟甲烷反应。 调聚反应在不含溶剂或溶液中的液体三氟氯乙烯中进行。 如此形成的调聚物可以任选地通过与合适的氟化剂反应来氟化以提高它们的稳定性。

公开(公告)号：US06451276B1

公开(公告)日：2002-09-17

申请号：US09371284

申请日：1999-08-10

申请人： Mohan S. Saran ,  James R. Brooks ,  David C. Potts

发明人： Mohan S. Saran ,  James R. Brooks ,  David C. Potts

IPC分类号： C01B2501

CPC分类号： C01B25/027 ,  Y10S210/906

摘要： Disclosed is a method of recovering elemental phosphorus from a sludge that contains water, dirt, and elemental phosphorus. In the first step, the sludge is melted. A mixture is formed of the melted sludge and about 0.5 to about 5 wt % of an oxidizing agent, based on the weight of elemental phosphorus in the sludge, and about 75 to about 580 wt % water, based on the weight of the sludge. The mixture is stirred until a continuous elemental phosphorus phase forms. The purified phosphorus phase is separated from the mixture.

摘要翻译： 公开了从含有水，污物和元素磷的污泥中回收元素磷的方法。 在第一步，污泥被熔化。 基于污泥的重量，由熔融污泥和约0.5至约5重量％的氧化剂形成混合物，基于污泥中元素磷的重量和约75至约580重量％的水。 将混合物搅拌直到形成连续的元素磷相。 将纯化的磷相与混合物分离。

公开(公告)号：US5629465A

公开(公告)日：1997-05-13

申请号：US440612

申请日：1995-05-15

申请人： Mohamed W. M. Hisham ,  Mohan S. Saran

发明人： Mohamed W. M. Hisham ,  Mohan S. Saran

IPC分类号： C10G9/00 ,  C10G55/04 ,  C07C4/04

CPC分类号： C10G9/00 ,  C10G2400/20

摘要： Disclosed is a method of selecting a gas oil feedstock for use in manufacturing olefins. The feedstock is analyzed for the presence of benzothiophenes and is used to manufacture olefins only if it contains less than 50 ppm (as sulfur) of benzothiophenes. The concentration of benzothiophenes can be reduced by distilling the feedstock and removing the fraction of the feedstock that boils between about 45.degree. and about 60.degree. C. under reduced pressure of about 0.05 to about 0.1 mmHg. The concentration of benzothiophenes can also be reduced by passing the feedstock through a benzothiophene adsorber such as activated alumina or activated carbon.

摘要翻译： 公开了一种选择用于制造烯烃的瓦斯油原料的方法。 分析原料的苯并噻吩的存在，仅当其含有少于50ppm（如硫）苯并噻吩时才用于制备烯烃。 可以通过蒸馏原料并除去在约0.05至约0.1mmHg的减压下沸腾约45至约60℃的原料馏分来降低苯并噻吩的浓度。 苯并噻吩的浓度也可以通过使原料通过苯并噻吩吸附剂如活性氧化铝或活性炭来降低。

公开(公告)号：US5368832A

公开(公告)日：1994-11-29

申请号：US711841

申请日：1991-06-07

申请人： Harry E. Buckholtz ,  Mohan S. Saran ,  Frederick C. Leitert ,  David A. Flautt

发明人： Harry E. Buckholtz ,  Mohan S. Saran ,  Frederick C. Leitert ,  David A. Flautt

IPC分类号： C01B25/163 ,  C01B25/165

CPC分类号： C01B25/165 ,  C01B25/163

摘要： Disclosed is a method of making phosphorous acid or hypophosphorous acid by reacting hydrogen chloride with a sodium phosphite or a sodium hypophosphite, respectively, in the presence of water to precipitate sodium chloride crystals and form the acid. The acid is separated from the sodium chloride crystals and can be passed through an anion exchange column that is preferably loaded with phosphite or hypophosphite ions, respectively, to remove residual chloride ions.

摘要翻译： 公开了在水存在下分别使氯化氢与亚磷酸钠或次磷酸钠反应制备亚磷酸或次磷酸以沉淀氯化钠晶体并形成酸的方法。 酸与氯化钠晶体分离，可分别通过负载有亚磷酸盐或次磷酸根离子的阴离子交换柱，以除去残留的氯离子。

公开(公告)号：US4990674A

公开(公告)日：1991-02-05

申请号：US366120

申请日：1989-06-14

申请人： Mohan S. Saran

发明人： Mohan S. Saran

IPC分类号： C07F9/53 ,  C07F9/46 ,  C22B3/38

CPC分类号： C22B3/0052 ,  C07F9/46 ,  Y02P10/234

摘要： Disclosed is a method of making an aliphatic aromatic phosphine oxide by reacting an aliphatic aromatic phosphinic acid with a halogenating agent to produce a phosphoryl halide, reducing the phosphoryl halide to a phosphinous halide, hydrolyzing the phosphinous halide with water to produce a mixture of a phosphine and a phosphine oxide, determining how much phosphine is present in said mixture, and adding sufficient oxidizing agent to oxidize the phosphine in the mixture to the corresponding phosphine oxide. Octylphenyl phosphine oxide is preferred. The phosphine oxides are useful in making extractants for extracting actimides and lanthanides.

摘要翻译： 公开了通过使脂族芳族次膦酸与卤化剂反应以制备磷酰卤，将磷酰卤还原成磷化氢卤化物，用水水解磷化氢卤化物以制备磷化氢的混合物来制备脂族芳族氧化膦的方法 和氧化膦，确定所述混合物中存在多少膦，并加入足够的氧化剂以将混合物中的膦氧化成相应的氧化膦。 辛基苯基氧膦是优选的。 氧化膦可用于制备萃取剂以萃取锕系元素和镧系元素。