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公开(公告)号：US20220250914A1
公开(公告)日：2022-08-11
申请号：US17581540
申请日：2022-01-21
Inventor： Rohan Ashok Hule , Micah J. Green , Sanjit Saha , Pritishma Lakhe , Sundararajan Uppili , Sergey Yakovlev
IPC: C01B32/19
Abstract: A method of electrochemical exfoliation, may include: electrochemically exfoliating a parent material comprising coke, wherein the electrochemically exfoliating comprises introducing the parent material into a porous chamber, applying pressure to the porous chamber to thereby compress the parent material in the porous chamber, and applying a potential bias to the parent material while at least a portion of the parent material is in contact with an electrolyte solution to produce a mixture of exfoliated material and unexfoliated parent material, wherein the exfoliated material comprises exfoliated graphene; and separating at least a portion of the exfoliated material from the unexfoliated parent material.
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Patent Agency Ranking
公开(公告)号：US20240368476A1
公开(公告)日：2024-11-07
申请号：US18774302
申请日：2024-07-16
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Sundararajan Uppili , Bryan A. Patel , Randolph J. Smiley , Lawrence R. Gros , Anthony Go , Saurabh S. Maduskar , Melissa D. Foster , Philippe Laurent
Abstract: Systems and methods are provided for integration of a reactor for polyolefin pyrolysis with the effluent processing train for a steam cracker. The polyolefins can correspond to, for example, polyolefins in plastic waste. Integrating a process for polyolefin pyrolysis with a steam cracker processing train can allow a mixture of polymers to be converted to monomer units while reducing or minimizing costs and/or equipment footprint. This can allow for direct conversion of polyolefins to the light olefin monomers in high yield while significantly lowering capital and energy usage due to integration with a steam cracking process train. The integration can be enabled in part by selecting feeds with appropriate mixtures of various polymer types and/or by limiting the volume of the plastic waste pyrolysis product relative to the volume from the steam cracker(s) in the steam cracking process train. By selecting plastic waste and/or other polyolefin sources with an appropriate mixture of polyolefins as the feedstock, the resulting polyolefin pyrolysis product can be separated in a steam cracking process train to produce separate fractions for various polymer grade small olefin products.
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公开(公告)号：US12297113B2
公开(公告)日：2025-05-13
申请号：US17581540
申请日：2022-01-21
Inventor： Rohan Ashok Hule , Micah J. Green , Sanjit Saha , Pritishma Lakhe , Sundararajan Uppili , Sergey Yakovlev
Abstract: A method of electrochemical exfoliation, may include: electrochemically exfoliating a parent material comprising coke, wherein the electrochemically exfoliating comprises introducing the parent material into a porous chamber, applying pressure to the porous chamber to thereby compress the parent material in the porous chamber, and applying a potential bias to the parent material while at least a portion of the parent material is in contact with an electrolyte solution to produce a mixture of exfoliated material and unexfoliated parent material, wherein the exfoliated material comprises exfoliated graphene; and separating at least a portion of the exfoliated material from the unexfoliated parent material.
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公开(公告)号：US20220195309A1
公开(公告)日：2022-06-23
申请号：US17595344
申请日：2020-06-12
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Sundararajan Uppili , Bryan A. Patel , Randolph J. Smiley , Lawrence R. Gros , Anthony Go , Saurabh S. Maduskar , Melissa D. Foster , Philippe Laurent
Abstract: Systems and methods are provided for integration of a reactor for polyolefin pyrolysis with the effluent processing train for a steam cracker. The polyolefins can correspond to, for example, polyolefins in plastic waste. Integrating a process for polyolefin pyrolysis with a steam cracker processing train can allow a mixture of polymers to be converted to monomer units while reducing or minimizing costs and/or equipment footprint. This can allow for direct conversion of polyolefins to the light olefin monomers in high yield while significantly lowering capital and energy usage due to integration with a steam cracking process train. The integration can be enabled in part by selecting feeds with appropriate mixtures of various polymer types and/or by limiting the volume of the plastic waste pyrolysis product relative to the volume from the steam cracker(s) in the steam cracking process train. By selecting plastic waste and/or other polyolefin sources with an appropriate mixture of polyolefins as the feedstock, the resulting polyolefin pyrolysis product can be separated in a steam cracking process train to produce separate fractions for various polymer grade small olefin products.
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公开(公告)号：US12065616B2
公开(公告)日：2024-08-20
申请号：US17595344
申请日：2020-06-12
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Sundararajan Uppili , Bryan A. Patel , Randolph J. Smiley , Lawrence R. Gros , Anthony Go , Saurabh S. Maduskar , Melissa D. Foster , Philippe Laurent
Abstract: Systems and methods are provided for integration of a reactor for polyolefin pyrolysis with the effluent processing train for a steam cracker. The polyolefins can correspond to, for example, polyolefins in plastic waste. Integrating a process for polyolefin pyrolysis with a steam cracker processing train can allow a mixture of polymers to be converted to monomer units while reducing or minimizing costs and/or equipment footprint. This can allow for direct conversion of polyolefins to the light olefin monomers in high yield while significantly lowering capital and energy usage due to integration with a steam cracking process train. The integration can be enabled in part by selecting feeds with appropriate mixtures of various polymer types and/or by limiting the volume of the plastic waste pyrolysis product relative to the volume from the steam cracker(s) in the steam cracking process train. By selecting plastic waste and/or other polyolefin sources with an appropriate mixture of polyolefins as the feedstock, the resulting polyolefin pyrolysis product can be separated in a steam cracking process train to produce separate fractions for various polymer grade small olefin products.
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公开(公告)号：US20230287276A1
公开(公告)日：2023-09-14
申请号：US18007446
申请日：2021-07-14
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Bryan A. Patel , Randolph J Smiley , Saurabh S. Maduskar , Sundararajan Uppili , Michael W. Weber
CPC classification number: C10G9/32 , C10B49/22 , C10B53/07 , C10B57/045 , C10B55/10 , B09B3/40 , C10G2300/4006 , C10G2300/1003 , C10G2300/301 , B09B2101/75
Abstract: Systems and methods are provided for conversion of polymers (such as plastic waste) to olefins. The systems and methods can include a recycle loop so that a portion of the pyrolysis effluent can be combined with solid plastic feedstock. The input flow to the pyrolysis reactor can correspond to a slurry of plastic particles in recycled effluent or a solution of plastic in recycled effluent.
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