PROCESS FOR THE PRODUCTION OF PYROLYSIS OIL FROM WASTE PLASTICS

    公开(公告)号:US20240409827A1

    公开(公告)日:2024-12-12

    申请号:US18695552

    申请日:2022-10-12

    Abstract: The invention relates to a process for converting plastics waste into pyrolysis oil for feeding to a steam cracker including the steps of: pre-washing a stream of comminuted waste plastics in a washing liquid comprising washing water and caustic solution; separating the pre-washed comminuted waste plastics to provide a stream of polyolefin-enriched washed comminuted plastics waste; thermally cracking the stream of polyolefin-enriched washed comminuted plastics waste to produce a vaporised hydrocarbon stream; condensing the vaporised hydrocarbon stream into a liquid hydrocarbon stream and gaseous hydrocarbon stream; washing the liquid hydrocarbon stream with caustic solution; separating the liquid hydrocarbon stream from the caustic solution to produce a stream of caustic-washed liquid hydrocarbon and a stream of spent caustic solution; and rinsing the caustic-washed liquid hydrocarbon stream with water; separating the rinsed liquid hydrocarbon stream from the rinsing water to produce a stream of pyrolysis oil and a stream of spent water.

    METHOD FOR PRODUCING A HYDROCARBON PRODUCT

    公开(公告)号:US20240400916A1

    公开(公告)日:2024-12-05

    申请号:US18698938

    申请日:2022-10-20

    Abstract: A method for producing a hydrocarbon product from a hydrocarbon mixture containing at least 1 ppm of organically bound halogen includes providing the hydrocarbon mixture containing at least 1 ppm of organically bound halogen, heating the hydrocarbon mixture in order to obtain a gaseous hydrocarbon stream, bringing the gaseous hydrocarbon stream into contact with a composition containing at least one nitrogen compound in order to obtain a gaseous mixture, as a result of which organically bound halogen is converted into halide ions, and separating the halide ions in order to obtain the hydrocarbon product.

    Debottleneck solution for delayed Coker unit

    公开(公告)号:US12152206B2

    公开(公告)日:2024-11-26

    申请号:US17792389

    申请日:2020-01-13

    Abstract: The present invention relates to debottleneck solution for delayed Coker unit. More particularly, this invention relates to bottoms of vacuum residuum routed to Coker unit through de-asphalting unit to avoid revamp of existing Coker for the processing of heavier feed stock when there is a change in crude slate. Another object of the invention, in particular, relates to improved delayed coking products, a process used in petroleum refineries to crack petroleum residue, thus converting it into gaseous and liquid product streams and leaving behind solid, carbonaceous petroleum coke.

    Recovery of aliphatic hydrocarbons

    公开(公告)号:US11891574B2

    公开(公告)日:2024-02-06

    申请号:US17441380

    申请日:2020-04-14

    CPC classification number: C10G1/002 C10G21/006 C10G21/02 C10G55/04 C10G1/10

    Abstract: The invention relates to a process for the recovery of aliphatic hydrocarbons from a liquid hydrocarbon feedstock stream, which comprises aliphatic hydrocarbons and additionally comprises aromatic hydrocarbons and/or polar components, said process comprising the steps of: feeding the liquid hydrocarbon feedstock stream to a first column; feeding a first solvent stream which comprises an organic solvent to the first column at a position which is higher than the position at which the liquid hydrocarbon feedstock stream is fed; contacting at least a portion of the liquid hydrocarbon feedstock stream with at least a portion of the first solvent stream; and recovering at least a portion of the aliphatic hydrocarbons by liquid-liquid extraction of aromatic hydrocarbons and/or polar components with organic solvent, resulting in a stream comprising recovered aliphatic hydrocarbons and optionally organic solvent and a bottom stream from the first column comprising organic solvent and aromatic hydrocarbons and/or polar components.

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