PROCESS FOR THE PREPARATION OF POLYCARBONATES FROM WASTE PLASTIC FEEDSTOCKS

    公开(公告)号:US20230287175A1

    公开(公告)日:2023-09-14

    申请号:US18017253

    申请日:2021-07-15

    CPC classification number: C08G64/307 C08J11/10 C08J2369/00

    Abstract: Process for the production of polycarbonates comprising: providing a hydrocarbon stream A obtained by treatment of a waste plastics feedstock; supplying a feed C comprising a fraction of the hydrocarbon stream A and a fraction of a hydrocarbon stream B to a thermal cracker furnace comprising cracking coil(s); thermally cracking in the presence of steam to obtain a cracked hydrocarbon stream D; separating a product stream E comprising propylene and a product stream F comprising benzene from the cracked hydrocarbon stream D; performing a reaction and one or more separation step to obtain a product stream G comprising phenol; supplying the product stream G and acetone to a reactor and performing a reaction and one or more separation step to obtain a product stream H comprising bisphenol-A; and supplying the product stream H with phosgene or diphenyl carbonate to a reactor and performing a polymerisation reaction to obtain a polycarbonate.

    PROCESS FOR THE PREPARATION OF CHEMICAL PRODUCTS FROM WASTE PLASTIC FEEDSTOCKS

    公开(公告)号:US20230183579A1

    公开(公告)日:2023-06-15

    申请号:US18017345

    申请日:2021-07-15

    CPC classification number: C10B53/07 C10G1/10 C10G9/14 C10G2400/20

    Abstract: The present invention relates to a process for the production of butenes and butadienes from waste plastics feedstocks comprising the steps in this order of: (a) providing a hydrocarbon stream A obtained by hydrotreatment of pyrolysis oil produced from a waste plastics feedstock; (b) optionally providing a hydrocarbon stream B; (c) supplying a feed C comprising a fraction of the hydrocarbon stream A and optionally a fraction of the hydrocarbon stream B to a thermal cracker furnace comprising cracking coil(s); (d) performing a thermal cracking operation in the presence of steam to obtain a cracked hydrocarbon stream D; (e) supplying the cracked hydrocarbon stream D to one or more separation units; (f) performing a separation operation to obtain different streams of chemical products comprising ethylene, propylene, isobutene, 1-butene, 2-butene, 1,2-butadiene, 1,3-butadiene, benzene, styrene, toluene, ethylbenzene and xylenes; wherein in step (d): the coil outlet temperature is >800 and 805 and 0.3 and 0.3 and

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