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1. 发明授权

US11560323B2 Compositions of dry acid polymers and uses thereof 有权
公开(公告)号：US11560323B2
公开(公告)日：2023-01-24
申请号：US17230494
申请日：2021-04-14
申请人： KEMIRA OYJ
发明人： Duane C. Wilson , Thomas Fenderson , Igal Maasen , Sukhjit Aujla
IPC分类号： C02F1/56 , C02F11/147 , C02F11/14 , C08F220/56 , C08L33/26 , C02F103/10
摘要： The present embodiments generally relate to the use of one or more polymers, e.g., one or more dry acid polymers and/or one or more dry acid polymers with salt, as flocculants, generally for treating tailings, e.g., oil sands tailings, in need of solid-liquid separation, e.g., in order to efficiently recycle water and/or to reduce the volume of tailings which may be transferred to a tailings pond and/or a dedicated disposal area.

2. 发明授权

US11535587B2 Hydrated crystalline form of 2-acrylamido-2-methylpropane sulfonic acid 有权
公开(公告)号：US11535587B2
公开(公告)日：2022-12-27
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 , C02F11/147 , C09K8/68 , C09K8/80 , E21B43/26 , C09K8/588 , E21B43/16 , C02F1/56 , C02F103/10
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.

3. 发明申请

US20220332642A1 METHOD OF INERTING EXCAVATION SLUDGE 有权
公开(公告)号：US20220332642A1
公开(公告)日：2022-10-20
申请号：US17722557
申请日：2022-04-18
申请人： EIFFAGE GC INFRA LINEAIRES
发明人： Laurence BOULANGÉ , Florian DOOM , Marina DA CRUZ GOMES
IPC分类号： C04B18/12 , C04B26/26 , C02F11/147 , B01D11/04
摘要： A process for rendering excavation material inert for the purpose of their analysis, of their storage and/or of their valorisation. The process for inerting the excavation material includes adding an organic acid, of a complexing agent or of a diaminotetracarboxylic acid to the excavation material, the complexing agent being chosen from a sugar alcohol, a cationic surface-active agent and their mixtures. Also, a method of determining the concentration by weight of a polluting inorganic element included in an excavated material, a method of storage of the inert excavation material, and a method of valorising the inerted material.

4. 发明申请

US20220315500A1 Double Drum Systems and Processes for Converting Biosolids to Fertilizer 有权
公开(公告)号：US20220315500A1
公开(公告)日：2022-10-06
申请号：US17220994
申请日：2021-04-02
申请人： Merrell Bros, Inc.
发明人： Terry Merrell
IPC分类号： C05F3/04 , C02F11/127 , C02F11/13 , C02F11/147 , C02F11/123
摘要： A system for converting biosolids to fertilizer comprising: a storage tank for holding biosolids; a conveyor operably connected to the storage tank for conveying the biosolids from the storage tank to a pressurized screener, wherein the pressurized screener selectively eliminates unwanted debris from the biosolids; a second conveyor operably connected to the pressurized screener to convey the biosolids to a centrifuge, the centrifuge operatively configured to remove water from the biosolids; a third conveyor operably connected to the centrifuge to convey the biosolids to a feeding chamber, a self-leveling conveyer position in the feeding chamber configured to deliver the biosolids to a nip feeder operatively positioned in the feeding chamber to selectively biosolids from the feeding chamber to a nip, wherein the nip is a gap between a first and second dryer drums; the first and second dryer drums operatively positioned to rotate and draw biosolids from the nip feeder into the nip, wherein a first and second scrapers are operably positioned to remove biosolids from the first and second dryer drums as they rotate, wherein the first and second dryer drums are selectively heated with steam provided by a boiler; a fourth conveyor positioned underneath the dryer drums to collect the biosolids after they pass through the nip and to convey the biosolids to a pelletizer configured to form the biosolids into pellets; a fifth conveyor operably connected to the pelletizer to convey the pellets to a cooling chamber.

5. 发明申请

US20210371316A1 PROCESS FOR DEWATERING AN AQUEOUS PROCESS STREAM 有权
公开(公告)号：US20210371316A1
公开(公告)日：2021-12-02
申请号：US16319062
申请日：2017-09-14
申请人： Dow Global Technologies LLC
发明人： Paul A. Gillis , Jason S. Moore , Michael K. Poindexter , Jason A. Tubbs
IPC分类号： C02F11/147 , B01D21/01 , B01D21/26 , C02F11/127 , C02F11/16
摘要： The present invention relates to an in-line blending apparatus and use therein for flocculating and dewatering an aqueous mineral suspension. Said method comprises blending an aqueous mineral suspension and a poly(ethylene oxide) (co)polymer using a progressive cavity pump. Said method is particularly useful for the treatment of suspensions of particulate material, especially waste mineral slurries, especially for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.

6. 发明授权

US11174185B2 Methods and systems for multi-stage encapsulation of wastes and production thereof into aggregate products 有权
公开(公告)号：US11174185B2
公开(公告)日：2021-11-16
申请号：US17054480
申请日：2019-05-10
申请人： Ash Management Engineering, Inc.
发明人： Alan E. Bland
IPC分类号： C04B18/02 , C04B18/04 , C04B28/04 , C04B20/12 , C02F11/00 , C04B20/10 , C04B111/60 , C02F103/10 , C04B111/00 , C04B111/52 , C02F11/122 , C02F11/147
摘要： Embodiments of the present invention may provide encapsulation of waste (2) materials in a first (1), double (5), triple (7), or even quadruple (44) encapsulation. Encapsulation may include waste (2), ash (4), Portland cement (3), water, chemicals, or the like. Agglomerates formed perhaps with high energy mixing may be processed, cured, or the like.

7. 发明申请

US20210269331A1 SYSTEMS AND METHODS FOR DEWATERING SLURRIES 有权
公开(公告)号：US20210269331A1
公开(公告)日：2021-09-02
申请号：US17258342
申请日：2018-07-18
申请人： Vermeer Manufacturing Company
发明人： Greogry Anderson , Brandon Storm , Andrew Strobel , Corey Lanoue , Tayte Askelsen , Samuel Edmund Whittome , Ross Peter Jones
IPC分类号： C02F1/52 , C02F11/143 , C02F11/147 , C02F11/121 , C02F1/56 , G01N15/02 , G01N29/032 , G01N29/24
摘要： Systems and methods for dewatering slurries having relatively high solids content such as earthen slurries are disclosed. In some embodiments, one or more transducer devices configured for acoustic spectroscopy and/or electroacoustic spectroscopy are used to determine a parameter related to the particle size distribution (e.g., specific surfaced area) and/or zeta potential of the slurry.

8. 发明授权

US11097971B2 Water separation from particulate materials 有权
公开(公告)号：US11097971B2
公开(公告)日：2021-08-24
申请号：US16733863
申请日：2020-01-03
申请人： Aicardo Roa-Espinosa , Michelle H Pham
发明人： Aicardo Roa-Espinosa , Michelle H Pham
IPC分类号： C02F11/147 , C02F11/00 , C02F1/52 , C02F1/56 , E21B21/06 , C02F1/28 , C02F11/14 , B01D21/01 , C02F103/10 , C02F11/121
摘要： A composition for solid pellets and a process for removing water from particulate material slurries produced by horizontal drilling, vertical drilling and dredging of bodies of water are disclosed. The composition comprises a precipitating agent, a purification agent and, optionally, a binding agent. The process comprises the steps of 1) water removal accomplished by diffusing a chemical reagent into the particulate material source stream that results in separating out a clean water fraction and 2) reacting the sludge with a demulsifier and a superabsorbent polymer that locks onto the water in the remaining slurry thus turning the slurry into a solid crust. The crust is ground into a particulate form and disposed in a landfill. The combined effect of the treatments is the thickening of the particulate material slurry from about 10% solids to about 25% solids. The removed water may be used for further drilling and drinking.

9. 发明申请

US20210170454A1 METHOD AND APPARATUS FOR CLEANING LARGE PIPES, SUCH AS STORM DRAIN CONDUITS 有权
公开(公告)号：US20210170454A1
公开(公告)日：2021-06-10
申请号：US17183112
申请日：2021-02-23
申请人： Jeffrey L. IWASAKI-HIGBEE
发明人： Jeffrey L. IWASAKI-HIGBEE
IPC分类号： B08B9/032 , C02F11/147 , C02F11/121 , E03F9/00
摘要： Apparatuses and methods for cleaning accumulated sediment from storm drain conduits and other large-diameter conduits are disclosed. A nozzle assembly is arranged to deliver a high-volume flow of water at a pressure high enough to loosen sediment from the interior of a conduit and to propel the nozzle assembly and an associated nozzle feed hose upstream within a conduit being cleaned. Water from the nozzle assembly flushes the sediment downstream and is then collected, partially cleaned, and reused in the nozzle assembly. Mud and clay may be left in the water to increase its specific gravity and viscosity. A self-contained portable and mobile system includes a tank and apparatus for removal of high concentrations of entrained or suspended solids, and a pump and conduits for delivering a high-volume flow of water, containing quantities of suspended solids, to the nozzle assembly.

10. 发明授权

US10858782B2 Method for dewatering of sludge from a pulp, paper or board making process 有权
公开(公告)号：US10858782B2
公开(公告)日：2020-12-08
申请号：US16462570
申请日：2017-12-15
申请人： Kemira Oyj
发明人： Matti Hietaniemi , Rosa Carceller , Asko Karppi , Joonas Likander , Jyri Välimäki
IPC分类号： D21C9/18 , D21C5/02 , D21H21/10 , D21H17/45 , D21H23/04 , C02F1/54 , C02F11/125 , C02F11/147 , C02F11/126 , C02F103/28
摘要： A method is disclosed for dewatering of sludge from a pulp, paper or board making process, such as deinking sludge, including obtaining of an aqueous sludge including an aqueous phase and a fibre material suspended in the aqueous phase. The sludge is subjected to a pre-thickening step, where a first part of the aqueous phase is removed from the sludge and to a pressing step, where a second part of the aqueous phase is removed from the sludge, thereby obtaining a dry pressed sludge. Before or at the pre-thickening step a polymer composition having a charge density of at the most 1.7 meq/g, preferably at most 1.5 meq/g, more preferably at most 1.1 meq/g, is added to the sludge.

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