Patents by Inventor Thomas Fenderson
Thomas Fenderson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240101908Abstract: The invention relates to method and composition for treating tailings from a separation process, where bitumen is separated from mineral solids. Tailings comprise an aqueous phase with suspended solid particulate material and residual bitumen and have a dry solids content <25 weight-%. The method comprises addition of a flocculating agent comprising polyacrylamide to the tailings, as well as addition of an auxiliary agent comprising ionic liquid to tailings in conjunction with the flocculating agent. Flocs, which comprise solid particulate material, are formed and the formed flocs are separated from the aqueous phase. The composition comprises a copolymer of (meth)acrylamide and an auxiliary agent comprising ionic liquid.Type: ApplicationFiled: October 3, 2023Publication date: March 28, 2024Inventors: Thomas FENDERSON, Lasse KYLLONEN, Alistair KING, Evangelos SKLAVOUNOS, Frances FOURNIER, Sukhjit AUJLA
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Patent number: 11845899Abstract: The invention relates to method and composition for treating tailings from a separation process, where bitumen is separated from mineral solids. Tailings comprise an aqueous phase with suspended solid particulate material and residual bitumen and have a dry solids content <25 weight-%. The method comprises addition of a flocculating agent comprising polyacrylamide to the tailings, as well as addition of an auxiliary agent comprising ionic liquid to tailings in conjunction with the flocculating agent. Flocs, which comprise solid particulate material, are formed and the formed flocs are separated from the aqueous phase. The composition comprises a copolymer of (meth)acrylamide and an auxiliary agent comprising ionic liquid.Type: GrantFiled: April 1, 2021Date of Patent: December 19, 2023Assignee: KEMIRA OYJInventors: Thomas Fenderson, Lasse Kyllonen, Alistair King, Evangelos Sklavounos, Frances Fournier, Sukhjit Aujla
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Patent number: 11560323Abstract: 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.Type: GrantFiled: April 14, 2021Date of Patent: January 24, 2023Assignee: KEMIRA OYJInventors: Duane C. Wilson, Thomas Fenderson, Igal Maasen, Sukhjit Aujla
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Patent number: 11242492Abstract: The present embodiments generally relate to methods for the treatment of tailings, e.g., oil sands tailings, including methods comprising the use of one or more flocculants, one or more coagulants and one or more oxidants to treat said tailings and/or to improve the performance of said one or more flocculants.Type: GrantFiled: June 12, 2019Date of Patent: February 8, 2022Assignee: KEMIRA OYJInventors: Miguel Pelaez, Thomas Fenderson
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Publication number: 20210300803Abstract: 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.Type: ApplicationFiled: April 14, 2021Publication date: September 30, 2021Inventors: Duane C. Wilson, Thomas Fenderson, Igal Maasen, Sukhjit Aujla
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Publication number: 20210284914Abstract: The invention relates to method and composition for treating tailings from a separation process, where bitumen is separated from mineral solids. Tailings comprise an aqueous phase with suspended solid particulate material and residual bitumen and have a dry solids content <25 weight-%. The method comprises addition of a flocculating agent comprising polyacrylamide to the tailings, as well as addition of an auxiliary agent comprising ionic liquid to tailings in conjunction with the flocculating agent. Flocs, which comprise solid particulate material, are formed and the formed flocs are separated from the aqueous phase. The composition comprises a copolymer of (meth)acrylamide and an auxiliary agent comprising ionic liquid.Type: ApplicationFiled: April 1, 2021Publication date: September 16, 2021Inventors: Thomas FENDERSON, Lasse KYLLONEN, Alistair KING, Evangelos SKLAVOUNOS, Frances FOURNIER, Sukhjit AUJLA
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Patent number: 11111162Abstract: A method for treating tailings substrate from mining or oil sands separation process, the tailings substrate comprising an aqueous phase with suspended solid particulate material. In the method, a flocculating agent is added to the tailings substrate, flocs are allowed to form and the formed flocs are separated from the aqueous phase. The flocculating agent comprises a degraded polyacrylamide comprising at least anionic units and having a process water viscosity reduced by 25-99%, preferably 50-99%, compared to a substantially similar polyacrylamide that has not been degraded by a degradation agent, measured at a shear rate 1 s?1 as a 0.4-0.8 weight-% solution of polymer in process water.Type: GrantFiled: August 10, 2020Date of Patent: September 7, 2021Assignee: KEMIRA OYJInventors: Thomas Fenderson, Miguel Pelaez, Igal Maasen, Yuping Luo
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Publication number: 20210238482Abstract: The invention relates to a surfactant composition comprising an ionic liquid prepared from an unsubstituted 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.Type: ApplicationFiled: February 5, 2021Publication date: August 5, 2021Inventors: Lasse Kyllonen, Sukhjit Aujla, Frances Fournier, Thomas Fenderson, Alistair King, Evangelos Sklavounos
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Patent number: 11001513Abstract: 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.Type: GrantFiled: October 10, 2017Date of Patent: May 11, 2021Assignee: Kemira OyjInventors: Duane C. Wilson, Thomas Fenderson, Igal Maasen, Sukhjit Aujla
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Patent number: 11001761Abstract: A method and a composition for treating tailings from a separation process are disclosed, where bitumen is separated from mineral solids. Tailings include an aqueous phase with suspended solid particulate material and residual bitumen and have a dry solids content <25 weight-%. The method includes addition of a flocculating agent including polyacrylamide to the tailings, as well as addition of an auxiliary agent including ionic liquid to tailings in conjunction with the flocculating agent. Flocs, which include solid particulate material, are formed and the formed flocs are separated from the aqueous phase. The composition in a copolymer of (meth)acrylamide and an auxiliary agent comprising ionic liquid.Type: GrantFiled: December 7, 2017Date of Patent: May 11, 2021Assignee: Kemira OyjInventors: Thomas Fenderson, Lasse Kyllönen, Alistair King, Evangelos Sklavounos, Frances Fournier, Sukhjit Aujla
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Patent number: 10920149Abstract: 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.Type: GrantFiled: June 10, 2016Date of Patent: February 16, 2021Assignee: Kemira OyjInventors: Lasse Kyllönen, Sukhjit Aujla, Frances Fournier, Thomas Fenderson, Alistair King, Evangelos Sklavounos
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Publication number: 20210024385Abstract: A method for treating tailings substrate from mining or oil sands separation process, the tailings substrate comprising an aqueous phase with suspended solid particulate material. In the method, a flocculating agent is added to the tailings substrate, flocs are allowed to form and the formed flocs are separated from the aqueous phase. The flocculating agent comprises a degraded polyacrylamide comprising at least anionic units and having a process water viscosity reduced by 25-99%, preferably 50-99%, compared to a substantially similar polyacrylamide that has not been degraded by a degradation agent, measured at a shear rate 1 s?1 as a 0.4-0.8 weight-% solution of polymer in process water.Type: ApplicationFiled: August 10, 2020Publication date: January 28, 2021Inventors: Thomas Fenderson, Miguel Pelaez, Igal Maasen, Yuping Luo
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Patent number: 10773977Abstract: A method for treating tailings substrate from mining or oil sands separation process, the tailings substrate comprising an aqueous phase with suspended solid particulate material. In the method, a flocculating agent is added to the tailings substrate, flocs are allowed to form and the formed flocs are separated from the aqueous phase. The flocculating agent comprises a degraded polyacrylamide comprising at least anionic units and having a process water viscosity reduced by 25-99%, preferably 50-99%, compared to a substantially similar polyacrylamide that has not been degraded by a degradation agent, measured at a shear rate 1 s?1 as a 0.4-0.8 weight-% solution of polymer in process water.Type: GrantFiled: June 1, 2018Date of Patent: September 15, 2020Assignee: KEMIRA OYJInventors: Thomas Fenderson, Miguel Pelaez, Igal Maasen, Yuping Luo
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Publication number: 20190375994Abstract: The present embodiments generally relate to methods for the treatment of tailings, e.g., oil sands tailings, including methods comprising the use of one or more flocculants, one or more coagulants and one or more oxidants to treat said tailings and/or to improve the performance of said one or more flocculants.Type: ApplicationFiled: June 12, 2019Publication date: December 12, 2019Inventors: Miguel Pelaez, Thomas Fenderson
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Publication number: 20190367389Abstract: A method for treating tailings substrate from mining or oil sands separation process, the tailings substrate comprising an aqueous phase with suspended solid particulate material. In the method, a flocculating agent is added to the tailings substrate, flocs are allowed to form and the formed flocs are separated from the aqueous phase. The flocculating agent comprises a degraded polyacrylamide comprising at least anionic units and having a process water viscosity reduced by 25-99%, preferably 50-99%, compared to a substantially similar polyacrylamide that has not been degraded by a degradation agent, measured at a shear rate 1 s?1 as a 0.4-0.8 weight-% solution of polymer in process water.Type: ApplicationFiled: June 1, 2018Publication date: December 5, 2019Applicant: Kemira OyjInventors: Thomas Fenderson, Miguel Pelaez, Igal Maasen, Yuping Luo
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Publication number: 20190284478Abstract: A method and a composition for treating tailings from a separation process are disclosed, where bitumen is separated from mineral solids. Tailings include an aqueous phase with suspended solid particulate material and residual bitumen and have a dry solids content <25 weight-%. The method includes addition of a flocculating agent including polyacrylamide to the tailings, as well as addition of an auxiliary agent including ionic liquid to tailings in conjunction with the flocculating agent. Flocs, which include solid particulate material, are formed and the formed flocs are separated from the aqueous phase. The composition in a copolymer of (meth)acrylamide and an auxiliary agent comprising ionic liquid.Type: ApplicationFiled: December 7, 2017Publication date: September 19, 2019Inventors: Thomas FENDERSON, Lasse KYLLÖNEN, Alistair KING, Evangelos SKLAVOUNOS, Frances FOURNIER, Sukhjit AUJLA
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Publication number: 20180155628Abstract: 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.Type: ApplicationFiled: June 10, 2016Publication date: June 7, 2018Applicant: Kemira OyjInventors: Lasse Kyllönen, Sukhjit Aujla, Frances Fournier, Thomas Fenderson, Alistair King, Evangelos Sklavounos
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Publication number: 20180099883Abstract: 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.Type: ApplicationFiled: October 10, 2017Publication date: April 12, 2018Inventors: Duane C. Wilson, Thomas Fenderson, Igal Maasen, Sukhjit Aujla
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Publication number: 20180002608Abstract: Provided are processes for treating a tailings stream which comprises water and solids, the process comprising: (i) adding one or more anionic polymer flocculants and one or more nonionic polymer flocculants to the tailings stream; (ii) allowing at least a portion of the solids to flocculate; and (iii) separating at least a portion of the flocculated solids from the tailings stream.Type: ApplicationFiled: May 30, 2017Publication date: January 4, 2018Inventors: Philip Watson, Krystle Stewart, Amir H. Mahmoudkhani, Thomas Fenderson
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Publication number: 20150027929Abstract: Provided are processes for treating a tailings stream which comprises water and solids, the process comprising: (i) adding one or more anionic polymer flocculants and one or more nonionic polymer flocculants to the tailings stream; (ii) allowing at least a portion of the solids to flocculate; and (iii) separating at least a portion of the flocculated solids from the tailings stream.Type: ApplicationFiled: July 23, 2014Publication date: January 29, 2015Inventors: Philip Watson, Krystle Stewart, Amir H. Mahmoudkhani, Thomas Fenderson