Abstract: A method for treating effluent from hydrothermal liquification of feedstock that contains plastic oil, pyrolysis oil, synthetic oil or hydrocarbons distillates in a plastic recycle process using supercritical water as a reaction medium into a finished liquid hydrocarbon fuel by removing impurities such as i.e. silicon, chlorides, metals, heteroatoms, etc., in a pre-treatment zone and may be passed into a feed drum or a continuous mixed settler vessel. The feed is introduced into a hydrogen atmosphere reactor. The reactor effluent is passed to a separator for extracting product mixture by addition of make-up or recycled hydrogen to the separator. The overhead product mixture is water washed to remove sour water or salt. The separator effluent is passed to a distillation section for extracting a liquid fuel product stream. A portion of the hydro processing product stream may be recycled to the feed drum or the continuous mixed settler vessel, which reduces concentration of diolefins.

Abstract: A method for purifying cumene may include splitting an alkylation reaction product into a first portion and a second portion; feeding the first portion as mostly a liquid into a benzene column; at least partially vaporizing the second portion in a heater; feeding the at least partially vaporized second portion into the benzene column. A method for purifying cumene may also include the steps of providing a benzene column and a cumene column; directing a liquid side draw from the benzene column to the cumene column, the liquid side draw being a liquid substantially free of DIPB; returning a benzene enriched vapor from the cumene column to the benzene column using an overhead line, the benzene enriched vapor having a higher concentration of benzene than the liquid side draw; and drawing purified cumene from the cumene column.

Abstract: A steam cracking unit including one or more electric resistance heating tubes electrically connected to a current source to generate heat via electrical resistance heating. Each resistance heating tube may include two or more tube sections. Each tube section may be independently supplied with a current. A controller may be configured to adjust the application of the current to one or more tube sections to control the electrical resistance heating of the one or more resistance heating tubes. In examples, the one or more electric heating tubes may be used as preheating tubes, cracking tubes, or both.

Abstract: A first stream containing 1,3-butadiene, C4 acetylenes, and optionally C3 hydrocarbons, is mixed with a portion of the liquid recycle stream from a C4 acetylene hydrogenation reactor containing hydrogenated C4 acetylenes and a molecular hydrogen-containing stream, the resulting mixed stream is then fed to a C4 acetylene hydrogenation reactor to selectively hydrogenate the C4 acetylenes in the crude butadiene stream without appreciable 1,3-butadiene conversion.

Abstract: A syngas reforming exchanger reactor design is described. The reforming exchanger has a head, a shell, and a tubesheet secured a tube bundle. The tubesheet is bolted to the shell, after which the head is bolted to the shell. A seal is configured between the tubesheet and components of the shell. Another seal is configured between components of the head and the tubesheet. In the reformer exchanger design, those seals are maintained under bolted pressure via the bolting of both the tubesheet and the head to the shell. This design improves the integrity of sealing, thereby preventing escape of hot reformed gases from the reformer exchanger reactor during operation.

Abstract: A reactor system and method for catalytic dehydrogenation of saturated C3-C6 hydrocarbons within a reactor placed within a reactor disengager, where the reactor is open at the bottom thereof and open to the disengager, and the exit riser from the reactor is not hard coupled to at least one downstream cyclone. This configuration permits controlling the amount of catalyst within the reactor by varying the level of catalyst in the reactor disengager outside the reactor and permits controlling total catalyst hold-up and/or weight hourly space velocity (WHSV) independently from catalyst flow from the catalyst regenerator.

Abstract: A reactor system and method for catalytic dehydrogenation of saturated C3-C6 hydrocarbons within a reactor placed within a reactor disengager, where the reactor is open at the bottom thereof and open to the disengager, and the exit riser from the reactor is not hard coupled to at least one downstream cyclone. This configuration permits controlling the amount of catalyst within the reactor by varying the level of catalyst in the reactor disengager outside the reactor and permits controlling total catalyst hold-up and/or weight hourly space velocity (WHSV) independently from catalyst flow from the catalyst regenerator.

Abstract: A process and system to deasphalt used motor oil distillate residue including VTAE the process including feeding the used motor oil distillate residue and a supercritical solvent to an asphaltene separator that outputs an overhead having deasphalted oil and a bottoms that includes pitch.

Abstract: A method and apparatus for high-purity hydrogen fired liquid hydrocarbon cracking. In one embodiment, the method may include preheating a liquid hydrocarbon feedstock in a first heat exchanger that is external to a furnace, adding steam to the preheated liquid hydrocarbon feedstock to create a fully or substantially fully vaporized stream, heating the fully or substantially fully vaporized stream in a second heat exchanger that is external to the furnace, and cracking the heated fully or substantially fully vaporized stream after it is preheated in the furnace to create a cracked gas stream comprising ethylene and hydrogen.

Abstract: A process and system for integrating a steam cracking unit with a blue hydrogen unit in which a methane-rich gas stream, a hydrogen-rich gas stream, or both from the steam cracking unit are fed to the blue hydrogen unit and a high purity hydrogen gas stream from the blue hydrogen unit is directed to the steam cracking unit.

Abstract: A process and system to integrate a steam cracking unit with a blue ammonia unit such that a methane-rich gas stream and/or a hydrogen-rich gas stream is directed from the steam cracking unit to the blue ammonia unit while a hydrogen gas containing stream is directed from the blue ammonia unit to the steam cracking unit.

Abstract: A system for controlling a steam cracking furnace may include a controller configured to control an electric heater to pre-heat a combustion air feed to a radiation section of the cracking furnace, and one or more sensors configured to sense properties of a recovered pure hydrogen stream fed to the radiation section of the cracking furnace as fuel. The controller can be configured to receive the sensed properties from the one or more sensors and control the electric heater based on the one or more sensed properties.

Abstract: A first stream containing 1,3-butadiene, C4 acetylenes, and optionally C3 hydrocarbons, is mixed with a portion of the liquid recycle stream from a C4 acetylene hydrogenation reactor containing hydrogenated C4 acetylenes and a molecular hydrogen-containing stream, the resulting mixed stream is then fed to a C4 acetylene hydrogenation reactor to selectively hydrogenate the C4 acetylenes in the crude butadiene stream without appreciable 1,3-butadiene conversion.

Abstract: A system and process for generating, on-site, a sustained C6+C7 aromatic rich solvent stream for tar solvation within the olefin plant employing a two-fuel oil tower system receiving a hydrocarbon feed from a quench water separator drum, where the two-fuel oil tower system is configured to make a sufficient solvent stream containing C6+C7 aromatic rich hydrocarbons that is recycled and mixed with quench water going to the quench water separator drum to assist in removing tar molecules out of the quench water.

Abstract: In a Fluid Catalytic Cracker (FCC) unit being operated in petrochemical mode that has an increased dry gas and LPG production that creates a bottleneck in product flow, a method for full or partial separation of light gas components from a wet gas compressor suction stream and routing it directly to an untreated fuel gas header using a parallel system to an existing wet gas compressor, which parallel system includes an auxiliary compressor and a membrane separation system.

Abstract: Methods and systems are provided for delimiting a gas plant during fluid catalytic cracking unit (FCCU) revamp as part of the olefin production system. These methods and system include a chiller unit in the gas concentration unit downstream of the FCCU. Other measures also include installing a stripper unit downstream of the regenerator of the FCCU or installing a quench line in a reactor of a FCCU to reduce the contact time of the hydrocarbon feedstock with the catalyst. These methods and systems may also lead to an increase in the propylene yield of the olefin production system.

Abstract: A system and a process for dimerizing cyclopentadiene (CPD) including producing a C6+C7 rich bottoms stream and a C5 rich side draw from a debutanizer, where the C5 rich side draw and at least a portion of the C6+C7 rich bottoms stream are directed to a dimerizer where the CPD is thermally dimerized to dicyclopentadiene (DCPD). DCPD is more stable than CPD and thus safer to handle.

Abstract: A multi-tier integrated power-to-ammonia system includes a converter for generating ammonia and heat through a reaction involving a compressed mixture of hydrogen and nitrogen gases. The system includes a steam generator that can generate steam using the heat from the reaction, and a reversible solid-oxide system in fluid communication with the steam generator that can separate the steam into oxygen gas and hydrogen gas.

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.

Abstract: A piping connection system and method to connect a double pipe system such as a double pipe heat changer to a housing, for example a housing of a manifold. In examples, the piping connection system and method may include a transition member configured to bond or connect to the double pipe system and to the housing. In examples, the piping connection system may include a baffle configured to redirect flow from the housing to the double pipe system through an opening and towards the transition member. In examples, the piping connection system and method may be used to manufacture a quench exchanger such as a primary quench exchanger.