公开(公告)号：US20180319682A1

公开(公告)日：2018-11-08

申请号：US15773572

申请日：2016-11-04

申请人： Kemira Oyj

发明人： Jonni Ahlgren ,  Sakari Halttunen ,  Jussi Ruotsalainen ,  Kari Saari

IPC分类号： C02F1/56 ,  D21C11/00

CPC分类号： C02F1/56 ,  C02F1/52 ,  C02F1/5245 ,  C02F2101/30 ,  C02F2101/34 ,  C02F2103/28 ,  C07G1/00 ,  C08H6/00 ,  D21C11/00 ,  D21C11/0007 ,  D21C11/0014 ,  D21C11/0028

摘要： The invention relates to a method for optimising material recovery in a chemical pulping process. The method comprises treating of cellulosic raw material with cooking chemicals in a cooking step, where lignin is at least partly dissolved into cooking liquid phase and separated from fibres. The lignin is separated from the cooking liquid phase. The separated lignin is used for formation of a treatment composition comprising at the most 1 weight-% of aluminium. A bleaching liquid phase is treated with the treatment composition in order to remove organic humic substances from the bleaching liquid. Organic sludge is formed and it is used for energy production in a chemical recovery step.

公开(公告)号：US20180248214A1

公开(公告)日：2018-08-30

申请号：US15755076

申请日：2016-08-24

申请人： Kemira Oyj

发明人： Mehrdad Hesampour ,  Hannele Havansi ,  Pirjo Vainio ,  Kirsi Kilponen

IPC分类号： H01M8/16 ,  H01M8/04 ,  C11D3/48 ,  C11D3/30 ,  C11D3/04 ,  C11D1/37

CPC分类号： H01M8/16 ,  A01N37/44 ,  C02F3/005 ,  C02F2103/327 ,  C02F2303/20 ,  C11D1/22 ,  C11D1/37 ,  C11D3/044 ,  C11D3/30 ,  C11D3/48 ,  H01M8/04 ,  Y02E60/527 ,  A01N25/02 ,  A01N25/30

摘要： The invention relates to a method for reducing fouling in a microbial fuel cell. The method comprises feeding of an influent comprising organic substance(s) into the microbial fuel cell (MFC), which comprises an anode and a cathode connected through an external electrical circuit with each other. Organic substance(s) are converted into electrical energy in the microbial fuel cell by using microorganisms, such as exoelectrogenic bacteria, and a treated flow is removed from the microbial fuel cell. A cleaning agent composition is fed simultaneously with the influent to the microbial fuel cell. The invention relates also to the cleaning agent composition and its use.

公开(公告)号：US20180244549A1

公开(公告)日：2018-08-30

申请号：US15756926

申请日：2016-08-31

申请人： Kemira Oyj

发明人： Jonni Ahlgren ,  Sakari Halttunen ,  Jussi Ruotsalainen ,  Maria Luhtala ,  Miia Niemelä

IPC分类号： C02F1/52 ,  C02F1/56

摘要： A method for removing humic substances comprising lignin, other lignin type compounds and their disintegration products from an aqueous alkaline waste water from a bleaching of chemical pulp, which method comprises—obtaining an aqueous alkaline waste water comprising humic substances such as dissolved lignin, and—adding a high cationic starch having a charge density value of at least 1.8 meq/g dry matter of starch derivates determined at pH 7-7.5 to the alkaline waste water to precipitate humic substances.

公开(公告)号：US10030335B2

公开(公告)日：2018-07-24

申请号：US15108671

申请日：2014-12-17

申请人： KEMIRA OYJ

发明人： Matti Hietaniemi ,  Mikko Virtanen

IPC分类号： D21H17/37 ,  D21H11/18 ,  C09C1/02 ,  D21H17/67 ,  D21H17/69 ,  D21H21/18 ,  D21H17/25 ,  D21H17/56 ,  C08L1/02 ,  C08L33/26 ,  C08L39/02 ,  D21H17/34

摘要： The present invention relates to a filler aggregate composition comprising filler particles of ground calcium carbonate (GCC); a pretreatment agent selected from polyvinylamine (PVAM) and cationic polyacrylamide (CPAM), or a mixture thereof; and a nanofibrillar cellulose (NFC); wherein said filler aggregate composition is in the form of a slurry, wherein said pretreatment agent has an average molecular weight below 6000000 g/mol and a has a charge density below 7 meq/g, determined at pH 7, and the nanofibrillar cellulose is present in an amount of about 0.1-40% of the dry weight of the filler particles. Further it also relates to its method of production, and its use in stocks, paper and paper board.

公开(公告)号：US20180187374A1

公开(公告)日：2018-07-05

申请号：US15739743

申请日：2016-06-23

申请人： Kemira Oyj

发明人： Li Yan ,  Zeming Bai

IPC分类号： D21H17/14 ,  D21H21/06 ,  D21H11/14 ,  D21H27/00 ,  D21J1/00

CPC分类号： D21H17/14 ,  D21H11/14 ,  D21H21/06 ,  D21H27/002 ,  D21J1/00

摘要： The invention relates to a method for controlling hydrophobic particles in aqueous environment in paper or board manufacture. The method comprises preparing an aqueous stock comprising natural fibrous material, feeding the stock to a wire section, where a fibrous web is formed by draining excess water through a wire, and adding a control chemical to aqueous environment at least in one dosage point between the preparation of the stock and the exit of the web from the wire section. The control chemical comprises performic acid, which is added to the aqueous stock, which has consistency of at least 3 weight-%.

公开(公告)号：US10005873B2

公开(公告)日：2018-06-26

申请号：US15121558

申请日：2015-02-27

申请人： KEMIRA OYJ

发明人： Sacha Legrand ,  Marco Polverari ,  Rosa Carceller

IPC分类号： D21H17/34 ,  C08F293/00 ,  C02F1/56 ,  C02F11/14 ,  C08F295/00 ,  D21H17/37 ,  D21H21/06 ,  D21H21/10 ,  C08F8/12 ,  C02F1/52 ,  C08F226/02

CPC分类号： C08F293/00 ,  C02F1/5272 ,  C02F1/56 ,  C02F11/14 ,  C08F8/12 ,  C08F226/02 ,  C08F295/00 ,  D21H17/34 ,  D21H17/37 ,  D21H17/375 ,  D21H21/06 ,  D21H21/10

摘要： New polyvinylamide and/or acryl acid-based copolymers. The new structured block copolymers are based on the block copolymerization of N-vinyl formamide (NVF) with other monomers by using a bifunctional initiator. Further, a method of preparing the structured block copolymer is provided, and especially a method wherein the NVF-based block is at least partially hydrolyzed to obtain PVAm. Also the use of the new structured block copolymers in sludge dewatering and in papermaking processes is disclosed.

公开(公告)号：US20180155628A1

公开(公告)日：2018-06-07

申请号：US15735181

申请日：2016-06-10

申请人： Kemira Oyj

发明人： Lasse Kyllönen ,  Sukhjit Aujla ,  Frances Fournier ,  Thomas Fenderson ,  Alistair King ,  Evangelos Sklavounos

IPC分类号： C10C3/00 ,  C08L95/00 ,  B03D1/02 ,  C10G1/04

CPC分类号： C10C3/007 ,  B03D1/026 ,  C07C215/40 ,  C07C279/04 ,  C08L95/00 ,  C09K8/524 ,  C09K8/584 ,  C10G1/04 ,  C10G1/045 ,  C11C3/00

摘要： The invention relates to a surfactant composition comprising an ionic liquid prepared from an unsubsituted or substituted primary, secondary or tertiary amine, or from an unsubstituted or substituted pyridine, amidine or guanidine with at least one fatty acid and/or resin acid. The invention also relates to a method for treating bitumen froth from a separation process, where bitumen is separated from mineral solids. The method comprises addition of said surfactant composition to the diluent and/or to the froth before phase separation.

公开(公告)号：US09989476B2

公开(公告)日：2018-06-05

申请号：US15038483

申请日：2014-11-18

申请人： Kemira Oyj

发明人： Lari Vähäsalo ,  Iiris Joensuu ,  Marjatta Piironen

IPC分类号： G01N21/85 ,  B03B7/00 ,  C09B67/32 ,  G01N21/27 ,  G01N21/59 ,  G01N21/82 ,  G01N31/22 ,  G01N33/18 ,  D21H23/08 ,  G01N15/06 ,  G01N21/31 ,  G01N33/34 ,  G01N21/78 ,  D21H23/78 ,  C09B21/00 ,  G01N15/00 ,  C02F1/52 ,  G01N21/83 ,  G01N21/84 ,  G01N27/447 ,  G01N21/77

CPC分类号： G01N21/85 ,  B03B7/00 ,  C02F1/5209 ,  C09B21/00 ,  C09B67/0075 ,  D21H23/08 ,  D21H23/78 ,  G01N15/06 ,  G01N21/274 ,  G01N21/314 ,  G01N21/59 ,  G01N21/78 ,  G01N21/82 ,  G01N21/83 ,  G01N27/447 ,  G01N31/22 ,  G01N33/182 ,  G01N33/343 ,  G01N2015/0053 ,  G01N2015/0092 ,  G01N2015/0693 ,  G01N2021/3155 ,  G01N2021/7783 ,  G01N2021/8411 ,  G01N2021/8416 ,  G01N2021/8557 ,  G01N2201/127 ,  G01N2201/129

摘要： The present invention concerns a method of optical measurement of an aqueous stream, and of processing the results of the measurement in order to determine the anionic charge of the stream, the method being carried out by measuring the light absorption of the stream and predicting the amount of anionic groups in the stream using a mathematical processing, such as mathematical calculations. Particularly, the method includes the steps of adding an amount of a cationic dye to the aqueous stream, measuring the light absorption spectra of the obtained dye-containing stream, and processing the obtained light absorption spectrum using said mathematical processing in order to obtain the anionic charge. The invention also concerns the use of the obtained spectrum in determining the turbidity of the stream, as well as a device suitable for use in carrying out the method.

公开(公告)号：US20180079949A1

公开(公告)日：2018-03-22

申请号：US15829337

申请日：2017-12-01

申请人： KEMIRA OYJ

发明人： Amir Mahmoudkhani ,  Robert Wilson ,  Luciana Bava ,  Jacob Rocker

IPC分类号： C09K8/48 ,  C04B28/02 ,  C04B18/14 ,  C04B14/06 ,  C04B24/32 ,  C04B103/00 ,  C04B103/50

CPC分类号： C09K8/48 ,  C04B14/066 ,  C04B18/146 ,  C04B24/32 ,  C04B28/02 ,  C04B2103/0041 ,  C04B2103/50 ,  C09K8/467 ,  Y02W30/94

摘要： Compositions and processes for breaking or reducing foam in a drilling fluid, or improving the disposal of a drilling fluid, or reducing or preventing entrained gas in a drilling fluid. The compositions include a defoaming composition comprising hydrophobic silica and an organic acid ester of a polyoxyethylene-polyoxypropylene block copolymer.

公开(公告)号：US09920241B2

公开(公告)日：2018-03-20

申请号：US14787908

申请日：2014-05-02

申请人： Kemira Oyj

发明人： Jiang Li ,  Roopa Tellakula ,  Tom Lynch ,  Harsha Kolla ,  Logan Jackson

IPC分类号： E21B43/26 ,  C09K8/88 ,  C09K8/68 ,  C09K8/80 ,  E21B43/267

CPC分类号： C09K8/882 ,  C09K8/68 ,  C09K8/80 ,  C09K2208/26 ,  E21B43/26 ,  E21B43/267

摘要： Methods and well treatment fluids for fracturing a subterranean formation penetrated by a well bore are provided, the method comprising injecting a well treatment fluid into the well bore at a pressure and flow rate sufficient to fracture the subterranean formation, wherein the well treatment fluid comprises an iron-containing breaker compound. The methods can be used to reduce viscosity of well treatment fluids.