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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：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：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：US20220372375A1
公开(公告)日：2022-11-24
申请号：US17772007
申请日：2020-10-27
Applicant: ExxonMobil Chemical Patents Inc.
Inventor： Bryan A. Patel , Randolph J. Smiley , Lawrence R. Gros , Mohsen N. Harandi
Abstract: Systems and methods are provided for co-processing of plastic waste in a coking environment or other thermal conversion environment. The co-processing of plastic waste in a coking environment can be performed by performing four types of processes on the plastic waste. The plastic waste can be conditioned by classifying and sizing of the plastic waste to improve the suitability of the plastic waste for co-processing. The conditioned plastic waste particles can be entrained and/or dissolved into a solvent and/or the base feed. The solution and/or slurry of plastic waste can be passed into a coking environment, such as a fluidized coking environment or a delayed coking environment. The plastic waste can then be co-processed in the coking environment to generate liquid product.
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