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公开(公告)号：US11219881B2
公开(公告)日：2022-01-11
申请号：US15569785
申请日：2016-04-27
Applicant: Andritz Oy
Inventor： Sanna Hämäläinen , Pekka Kittilä , Outi Poukka
Abstract: A method of regenerating an activated carbon catalyst which is used in the production of polysulphide liquor. In the method, the catalyst is washed with a washing liquid in order to remove the sediment accumulated in the catalyst. According to the present invention, in this case, the activated carbon catalyst is regenerated most suitably by bringing it to a multi-stage washing which comprises at least one washing step in which the washing liquid used comprises sodium sulphide, and one washing step in which acidic washing liquid is used. The sulphur precipitate is peeled off using sodium sulphide, and the iron and other metals can be effectively removed by using an acidic washing, without damaging the catalyst.
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公开(公告)号：US20200247670A1
公开(公告)日：2020-08-06
申请号：US16726137
申请日：2019-12-23
Applicant: Massachusetts Institute of Technology
Inventor： Guillaume Lambotte , Sangkwon Lee , Donald R. Sadoway , Antoine Allanore , Carole Gadois , Charles Cooper Rinzler , Youyang Zhao , Katsuhiro Nose
IPC: C01B17/34 , C01B17/22 , C22F1/04 , C01D5/00 , B01J47/14 , B01J39/14 , B01J39/02 , C22F1/043 , C01B17/20
Abstract: A method includes contacting a metallic compound comprising a first metallic cation, with a melt comprising a metallic polysulfide comprising a second metallic cation, thereby forming a molten metallic polysulfide of the first metallic cation. The method also includes cooling the melt to form a sulfur phase and a solid phase comprising the molten metallic polysulfide of the first metallic cation.
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公开(公告)号：US20190127221A1
公开(公告)日：2019-05-02
申请号：US16302684
申请日：2017-05-18
Applicant: Guillaume Lambotte , Sangkwon Lee , Donald R. Sadoway , Antoine Allanore , Carole Gadois , Charles Cooper Rinzler , Youyang Zhao , Katsuhiro Nose
Inventor： Guillaume Lambotte , Sangkwon Lee , Donald R. Sadoway , Antoine Allanore , Carole Gadois , Charles Cooper Rinzler , Youyang Zhao , Katsuhiro Nose
Abstract: A method includes contacting a metallic compound comprising a first metallic cation, with a melt comprising a metallic polysulfide comprising a second metallic cation, thereby forming a molten metallic polysulfide of the first metallic cation. The method also includes cooling the melt to form a sulfur phase and a solid phase comprising the molten metallic polysulfide of the first metallic cation.
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公开(公告)号：US5770754A
公开(公告)日：1998-06-23
申请号：US814290
申请日：1997-03-10
Applicant: Thomas Scholl
Inventor： Thomas Scholl
CPC classification number: C01B17/34 , C07F7/1892
Abstract: Polysulphidic silyl ethers are prepared by the reaction of metal polysulphides with halogenoalkylsilanes, in that, starting from hydrated metal sulphides and/or metal polysulphides, these are first dehydrated in the presence of a non water mixable organic solvent and in the presence of an emulsifier at temperatures of 90.degree. to 220.degree. C., optionally in vacuum or under pressure, if metal sulphides are used these are subsequently reacted with sulphur to form metal polysulphides, and thereafter the dehydrated metal polysulphides obtained are converted into the corresponding polysulphidic silyl ethers with halogenoalkylsilanes, optionally in the presence of polyhalogen compounds, at temperatures of 20.degree. to 150.degree. C.
Abstract translation: 多硫化物甲硅烷基醚通过金属多硫化物与卤代烷基硅烷的反应制备，因为从水合金属硫化物和/或金属多硫化物开始，它们首先在非水混合有机溶剂存在下脱水，并在乳化剂存在下 温度为90℃至220℃，任选在真空中或在压力下，如果使用金属硫化物，则随后与硫反应形成金属多硫化物，然后将得到的脱水金属多硫化物转化成与卤代烷基硅烷相应的多硫甲硅烷基醚 ，任选在多卤素化合物的存在下，在20℃至150℃的温度下
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5.发明授权Process for the production of polysulphide pulping liquor from pulp mill recovery smelt 失效从纸浆厂回收熔炼生产多硫化物制浆液的工艺
公开(公告)号：US4153502A
公开(公告)日：1979-05-08
申请号：US901589
申请日：1978-05-01
Applicant: Walter A. Mueller
Inventor： Walter A. Mueller
CPC classification number: D21C11/122 , C01B17/34 , Y10S423/03
Abstract: Sodium polysulphide is formed by reacting sodium sulphide and sodium sulphur-oxygen salts in the presence of carbon and oxygen. The invention is particularly applicable to reacting recovery furnace smelt from a polysulphide pulping process to form a mixture of sodium polysulphide and sodium carbonate which is substantially free from sodium sulphur-oxygen salts, so that dead-load sulphidity is substantially eliminated from the pulping liquor.
Abstract translation: 多硫化钠通过在碳和氧的存在下使硫化钠和硫磺 - 硫酸钠反应而形成。 本发明特别适用于使来自多硫化物制浆方法的回收炉熔体与基本上不含硫 - 氧盐的钠多硫化钠和碳酸钠的混合物反应，从而从制浆液中基本上消除了负载硫化物。
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Patent Agency Ranking
公开(公告)号：US3249522A
公开(公告)日：1966-05-03
申请号：US43453365
申请日：1965-02-23
Applicant: SOCONY MOBIL OIL CO INC
Inventor： BOLMER PERCE W
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公开(公告)号：US2047492A
公开(公告)日：1936-07-14
申请号：US62844432
申请日：1932-08-11
Applicant: IG FARBENINDUSTRIE AG
Inventor： ERIK REISSMANN , HERMANN WOLFF
IPC: C01B17/34
CPC classification number: C01B17/34 , C01P2006/82
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8.发明申请公开(公告)号：US20170275771A9
公开(公告)日：2017-09-28
申请号：US15279926
申请日：2016-09-29
Applicant: Ceramatec, Inc.
Inventor： John Howard Gordon
CPC classification number: C25C1/02 , C01B17/22 , C01B17/34 , C10G32/02 , C10G2300/202 , C25B1/00 , C25C3/02 , C25C7/06
Abstract: Alkali metals and sulfur may be recovered from alkali monosulfide and polysulfides in an electrolytic process that utilizes an electrolytic cell having an alkali ion conductive membrane. An anolyte includes an alkali monosulfide, an alkali polysulfide, or a mixture thereof and a solvent that dissolves elemental sulfur. A catholyte includes molten alkali metal. Applying an electric current oxidizes sulfide and polysulfide in the anolyte compartment, causes alkali metal ions to pass through the alkali ion conductive membrane to the catholyte compartment, and reduces the alkali metal ions in the catholyte compartment. Liquid sulfur separates from the anolyte and may be recovered. The electrolytic cell is operated at a temperature where the formed alkali metal and sulfur are molten.
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公开(公告)号：US06866748B2
公开(公告)日：2005-03-15
申请号：US10162549
申请日：2002-06-06
Applicant: Meenakshi V. Sundaram , Sebastien Corbeil , Michel Epiney
Inventor： Meenakshi V. Sundaram , Sebastien Corbeil , Michel Epiney
CPC classification number: C01B17/34 , D21C11/0007
Abstract: The present invention provides a process for preparing polysulfide. More particularly, the process of the present invention allows one to prepare the amount of polysulfide needed using clarified white liquor, and to be used when and where it is needed during the cooking process. The process comprises reacting alkaline digesting liquor after clarification with a catalytic amount of a transition metal oxide catalyst, most preferably manganese dioxide. The reaction is conducted at a temperature of 98° C. or less, and is conducted for a short period of time, e.g., less than five minutes, with no oxygen gas or air being introduced with the catalyst and the main flow of clarified liquor.
Abstract translation: 本发明提供了制备多硫化物的方法。 更具体地，本发明的方法允许使用澄清的白液制备所需的多硫化物的量，并且在烹饪过程中需要何时和何地使用。 该方法包括使澄清后的碱性消化液与催化量的过渡金属氧化物催化剂，最优选二氧化锰反应。 该反应在98℃或更低的温度下进行，并且进行短时间，例如少于5分钟，没有氧气或空气引入催化剂和澄清液体的主流 。
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公开(公告)号：US5376749A
公开(公告)日：1994-12-27
申请号：US131720
申请日：1993-10-05
Applicant: Richard F. Miller , Eugene H. Morselander
Inventor： Richard F. Miller , Eugene H. Morselander
CPC classification number: C01C1/20 , Y10S210/904 , Y10S588/901
Abstract: A stabilized ammonium polysulfide solution comprising an aqueous solution of ammonium polysulfide and a stabilizing amount of a water soluble, stabilizing compound that can be an azacyclic compound, a compound having the formula R--O--(C.sub.n H.sub.2n)NH.sub.2 or a compound having the formula (CH.sub.3).sub.2 NR.sub.1, the pH of the composition being from 7 to 14, the stabilized composition being useful in controlling the cyanide concentration in aqueous streams.
Abstract translation: 一种稳定的多硫化铵溶液，其包含多硫化铵水溶液和稳定量的水溶性稳定化合物，其可以是氮杂环化合物，具有式RO-（CnH2n）NH2的化合物或具有式（CH3）的化合物， 2NR1，组合物的pH为7至14，稳定的组合物可用于控制含水流中的氰化物浓度。
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