公开(公告)号：US20230020603A1

公开(公告)日：2023-01-19

申请号：US17777278

申请日：2020-12-04

申请人： KURITA WATER INDUSTRIES LTD.

发明人： Ayako SAKAMOTO ,  Shigeru SATO ,  Kazuya WATANABE ,  Yukihito MASUI

IPC分类号： C02F11/147

摘要： A sludge dehydrating agent comprising a cationic polymer which has: a constitutional unit a derived from a quaternary ammonium salt having a specific structure; and at least one constitutional unit selected from among a constitutional unit b derived from a quaternary ammonium salt having a specific structure and a constitutional unit c derived from a tertiary amine salt having a specific structure, wherein the intrinsic viscosity of the cationic polymer at 30° C. in a 1 mol/L sodium nitrate aqueous solution is 0.5-4.0 dL/g.

公开(公告)号：US11518695B2

公开(公告)日：2022-12-06

申请号：US16607109

申请日：2018-05-15

申请人： Kemira Oyj

发明人： Asko Karppi ,  Matti Hietaniemi

IPC分类号： D21H21/10 ,  C02F1/56 ,  C08J3/05 ,  D21H17/15 ,  D21H17/37 ,  C02F11/147 ,  C02F103/28

摘要： A method for producing an aqueous copolymer solution, which comprises dissolving a copolymer of (meth)acrylamide and at least 1 mol-% cationic monomers, calculated from total amount of monomers in the dissolving water having calcium hardness of at least mg/l, expressed as Ca2+, and adding acid comprising monoprotic organic acid and/or mineral acid to the dissolving water and/or the aqueous solution of the copolymer in an amount sufficient to provide the aqueous solution of the copolymer with a pH of equal to or less than 4.5. The invention also relates to uses of the obtained polymer solutions in manufacturing of paper, board or the like or in treatment of sludge or water.

公开(公告)号：US20220332680A1

公开(公告)日：2022-10-20

申请号：US17664208

申请日：2022-05-19

申请人： SPCM SA

发明人： Cédrick FAVERO ,  Johann KIEFFER

IPC分类号： C07C309/15 ,  C08F20/58 ,  C09K8/68 ,  C09K8/80 ,  E21B43/26 ,  C09K8/588 ,  E21B43/16 ,  C02F11/147 ,  C02F1/56

摘要： The present invention relates to a hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid having a 2-theta powder X-ray diffraction diagram comprising peaks at 10.58°, 11.2°, 12.65°, 13.66°, 16.28°, 18.45°, 20°, 20.4°, 22.5°, 25.5°, 25.88°, 26.47°, 28.52°, 30.28°, 30.8°, 34.09°, 38.19°, 40.69°, 41.82°, 43.74°, 46.04° degrees (+/−0.1°).
The present invention also relates to a production method for this form of 2-acrylamido-2-methylpropane sulfonic acid and a preparation method for an aqueous solution A of a salt of this form of 2-acrylamido-2-methylpropane sulfonic acid, and the (co)polymer of this form of -acrylamido-2-methylpropane sulfonic acid.

公开(公告)号：US20220332621A1

公开(公告)日：2022-10-20

申请号：US17639913

申请日：2020-11-10

申请人： CCCC (TIANJIN) ECO-ENVIRONMENTAL PROTECTION DESIGN & RESEARCH INSTITUTE CO., LTD.

发明人： Baoan HU ,  Jiayin HUANG ,  Xianfeng DONG

IPC分类号： C02F11/147 ,  C02F11/02 ,  C02F11/128

摘要： A porous biological polymerizing agent for sediment dewatering in environmental dredging of rivers and lakes is disclosed, which is obtained by thoroughly mixing 50 wt % to 70 wt % of an agent A and 30 wt % to 50 wt % of an agent B into irregular spheres of 1 mm to 3 mm, and crushing the irregular spheres into solid particles with a particle size of ≤20 mesh, and the solid particles have a pH of 5.0 to 6.0. The agent A is obtained by thoroughly mixing 10 wt % to 30 wt % of cellulose, 20 wt % to 50 wt % of starch, and 20 wt % to 40 wt % of amino acid; and the agent B is obtained by thoroughly mixing 40 wt % to 70 wt % of saccharifying enzyme (SE) and 30 wt % to 60 wt % of citric acid.

公开(公告)号：US11465077B2

公开(公告)日：2022-10-11

申请号：US17070960

申请日：2020-10-15

申请人： SOLETANCHE FREYSSINET

发明人： Christophe Justino ,  Christian Auvray ,  Brice Janneau

IPC分类号： C02F1/56 ,  B01D21/26 ,  B04C5/081 ,  B04C5/14 ,  C02F1/38 ,  E21B21/06 ,  B04C5/13 ,  C02F11/121 ,  C02F11/147 ,  C02F11/127 ,  B01D21/01 ,  B04C5/12 ,  C02F1/52

摘要： A drilling mud treatment unit (100) comprises a primary duct (10) for feeding coagulated drilling mud, an in-line flocculation system (20) for flocculating the coagulated drilling mud flowing in the primary duct (10), and at least one hydrocyclone (30) fed by the primary duct (10) and arranged downstream from the flocculation system (20). The hydrocyclone (30) has an overflow orifice (32) for receiving a liquid product resulting from treatment of the drilling mud and an underflow orifice (34) for receiving a solid product resulting from treatment of the drilling mud. The overflow orifice (32) presents an overflow diameter (Do) and the underflow orifice presents an underflow diameter (Du), and the underflow diameter (Du) is greater than 1.1 times the overflow diameter (Do).

公开(公告)号：US11299409B2

公开(公告)日：2022-04-12

申请号：US15781893

申请日：2016-12-07

申请人： KEMIRA OYJ ,  CHEVRON U.S.A. INC.

发明人： Logan Jackson ,  Thomas J. Lynch ,  Ronald Robinson ,  Frances Fournier ,  Hong Yang ,  Sukhjit Aujla ,  Do Hoon Kim ,  Dennis Arun Alexis ,  Varadarajan Dwarakanath ,  David Espinosa ,  Taimur Malik

IPC分类号： D21H17/37 ,  C02F1/56 ,  C02F11/14 ,  C08J3/07 ,  C02F11/147 ,  C02F103/10

摘要： Provided herein are liquid polymer (LP) compositions comprising an acrylamide (co)polymer, as well as methods for preparing inverted polymer solutions by inverting these LP compositions in an aqueous fluid. The resulting inverted polymer solutions can have a concentration of acrylamide (co)polymer of from about 50 to about 15,000 ppm, and a filter ratio of 1.5 or less at 15 psi using a 1.2 μm filter. Also provided are methods of using these inverted polymer solutions in dewatering, clarification, flocculation and/or thickening applications, and the like.

公开(公告)号：US11180446B2

公开(公告)日：2021-11-23

申请号：US16494844

申请日：2018-03-19

申请人： S.P.C.M. SA

发明人： Cédrick Favero ,  Johann Kieffer ,  Frédéric Daguerre

IPC分类号： E21B43/16 ,  C07C309/15 ,  C08F20/58 ,  C09K8/68 ,  C09K8/80 ,  E21B43/26 ,  C09K8/588 ,  C02F11/147 ,  C02F1/56 ,  C02F103/10

摘要： A process for enhanced oil recovery comprising the following steps: a) Preparation of an injection fluid comprising at least one water-soluble (co)polymer prepared at least from 2-acrylamido-2-methylpropane sulfonic acid (ATBS) or from at least one of its salts, with water or with brine, where the 2-acrylamido-2-methylpropane sulfonic acid is a hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid having a 2-theta powder X-ray diffraction diagram comprising peaks at 10.58°, 11.2°, 12.65°, 13.66°, 16.28°, 18.45°, 20°, 20.4°, 22.5°, 25.5°, 25.88°, 26.47°, 28.52°, 30.28°, 30.8°, 34.09°, 38.19°, 40.69°, 41.82°, 43.74°, 46.04° degrees. b) Injection of injection fluid into an underground formation, c) Flushing of the underground formation using the fluid injected, d) Recovery of an aqueous and hydrocarbon mixture.

公开(公告)号：US11167162B2

公开(公告)日：2021-11-09

申请号：US16226337

申请日：2018-12-19

申请人： CINCO H, S.A. DE C.V.

发明人： Andres Mauricio Houdelot Araujo

IPC分类号： A62D3/36 ,  C02F11/00 ,  A01C3/02 ,  C02F11/147 ,  C05G3/90 ,  A62D101/45 ,  A62D101/24 ,  A62D101/26 ,  A62D101/04 ,  C02F1/66

摘要： This invention refers to a method for preparing a chemical digester characterized by using organic and inorganic elements used for multiple purposes such as an accelerator in the decomposition of organic matter, as a water flocculant, as an organic soil fertilizer and as a means to eliminate the concentration of flies and other inserts in organic matter to decompose. The method comprises heating water in a reactor at a temperature of 38° C., adding a polysaccharide, an anti-thickener and an antifoam. The method then comprises the addition of two organic acids, one of them previously mixed in a second reactor and, finally, an inorganic acid until the mixture is homogenized. Optionally the method comprises the packaging of the mixture and the treatment of organic matter.

公开(公告)号：US11001514B2

公开(公告)日：2021-05-11

申请号：US16096108

申请日：2017-05-22

申请人： Dow Global Technologies LLC

发明人： Cole A. Witham ,  Paul A. Gillis ,  Michael K. Poindexter ,  Jason S. Moore

IPC分类号： C02F1/56 ,  B01D21/01 ,  C10G1/04 ,  E21B21/06 ,  C02F11/14 ,  C02F11/147 ,  C02F11/121 ,  E21B43/34 ,  C02F103/10 ,  C02F103/12 ,  C02F103/16

摘要： The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a mixture of polyethylene oxide polymers, in particular a mixture of one or more high molecular weight polyethylene oxide polymer and one or more ultra high molecular weight polyethylene oxide polymer. Said mixture of polyethylene oxide polymers is useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.

公开(公告)号：US10941065B2

公开(公告)日：2021-03-09

申请号：US16325817

申请日：2017-08-16

申请人： ABLE CO., LTD.

发明人： Toshiki Yoshimura ,  Takeshi Okada ,  Keisuke Uchimura ,  Shu Ting Zhang

IPC分类号： C02F9/00 ,  B01D21/01 ,  B01D33/04 ,  B01D33/46 ,  B01D61/42 ,  C02F11/147 ,  C02F11/143 ,  C02F11/00 ,  C02F11/121

摘要： This combined dehydration device continuously supplies primarily dehydrated sludge to a sludge supply part, the combined dehydration device including: a multiple rotary disk-type solid-liquid separation device and an electroosmosis dehydration device. In the multiple rotary disk-type solid-liquid separation device, a plurality of rotary shafts in which a plurality of rotary disks are fitted and mounted are arranged from the upstream side toward the downstream side and pivotally supported; while the rotary disks are rotated, water to be treated including sludge is supplied from over the rotary disks at the upstream side and is subjected to a primary dehydration treatment; and first dehydrated sludge on the rotary disks is fed and discharged from a sludge discharge part located at the most downstream portion of the rotary disks. In the electroosmosis dehydration device, a sludge supply part is provided at the upstream side of an endless filtration fabric spread between rollers.