27results about "Treatment with polymerisation" patented technology

Provided is a method for upgrading a bio-based material, the method including the steps of pre-treating bio-renewable oil(s) and / or fat(s) to provide a bio-based fresh feed material, hydrotreating the bio-based fresh feed material, followed by separation, to provide a bio-propane composition.

A reactor, system, and method of converting methane non-oxidatively. A thermal catalytic reactor has a non-oxidative methane coupling (NMC) catalyst disposed on a first surface of a substrate. The NMC catalyst endothermically converts methane in a reaction zone on the catalyst side of the reactor to a product mixture. The reaction zone is heated by thermal conduction. The spatial temperature profile has a sharp increase and decrease that leads to selective control of the surface methane activation and gas phase reaction propagation. The reactor also has an inlet for introducing methane gas for contacting the NMC catalyst and an outlet for removing the product mixture. The heat source may generate the process heat chemically or electrically. Temperature profiles are controlled by zoning the combustion catalyst location or conductive heating element in the reactor.

The present invention relates to a process for the production of propylene-based polymers from waste plastics feedstocks comprising the steps in this order of: (a) providing a hydrocarbon stream A obtained by treatment of a waste plastics feedstock; (b) providing a hydrocarbon stream B; (c) supplying a feed C comprising a fraction of the hydrocarbon stream A and 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 a separation unit; (f) performing a separation operation in the separation unit to obtain a product stream E comprising propylene; (g) supplying the product stream E to a polymerisation reactor; and (h) performing a polymerisation reaction in the polymerisation reactor to obtain an propylene-based polymer; wherein in step (d): • the coil outlet temperature is ≥ 800 and ≤ 850 °C, preferably ≥ 805 and ≤ 835 °C; and • the weight ratio of steam to feed C is > 0.3 and < 0.8. Such process allows for optimisation of the quantity of waste plastic material that finds its way back into a polypropylene that is produced as outcome of the process. The higher that quantity is, i.e. the higher the quantity of chemical building blocks that are present in the waste plastic material that are converted to the produced polypropylene, the better the sustainability footprint of the process is. The process allows for circular utilisation of plastics. In addition, the process allows for increased efficiency in the production of polypropylene in that the fraction of propylene in the cracked hydrocarbon stream D is increased.

Provided is a continuous process for converting waste plastics into recycling for polypropylene polymerization. This process includes a step of selecting waste plastics containing polyethylene and / or polypropylene, and a step of preparing a blend of the biofeedstock and the selected plastics. The amount of plastic in the blend constitutes 20 wt% or less of the blend. The blend is passed through an FCC unit. A liquefied petroleum gas LPG olefin / paraffin mixture and naphtha are recovered from the FCC unit and can be used in the production of polypropylene.

A process for dimerizing and oligomerizing olefins to distillate fuels which manages the dimerization exotherm by diluting it with paraffins which are inert in the dimerization. The olefin stream can also be split and fed to multiple dimerization reactors to further reduce the heat generated. The ethylene feed can also be cooled before entering the dimerization reactor. The paraffins can be obtained from saturating oligomerized effluent.

Processes and facilities for producing a recycled content organic chemical compound directly or indirectly from waste plastic. Processing schemes are described herein for converting waste plastic (or hydrocarbon having recycled content derived from waste plastic) into useful intermediate chemicals and final products. In some aspects, recycled content aromatics (r-aromatics) from a hydrocarbon resin production facility can be processed to provide recycled content paraxylene (r-paraxylene), which can then be used to provide recycled content terephthalic acid (r-TPA) and / or recycled content polyethylene terephthalate (r-PET).

The invention discloses a preparation method of a heavy aryl colloid cooling accelerant, and belongs to the technical field of metal material heat treatment, the method comprises the following steps: carrying out distillation cutting separation on a heavy aryl colloid coupling component to obtain a heavy aryl colloid coupling light component; and carrying out catalytic crosslinking condensation reaction on the heavy aryl colloid coupled light component, and carrying out deep decompression separation to obtain the heavy aryl colloid cooling accelerant. The special quenching oil with different quenching requirements can be blended by adopting the composite quenching oil additive bag and the base oil, and the use indexes such as the cooling speed characteristic of the synthesized special quenching oil exceed those of quenching oil blended by a commercially available imported cooling accelerant Kende-0834.

Processes and facilities for producing a recycled content organic chemical compound directly or indirectly from waste plastic. Processing schemes are described herein for converting waste plastic (or hydrocarbon having recycled content derived from waste plastic) into useful intermediate chemicals and final products. In some aspects, recycled content aromatics (r-aromatics) from a hydrocarbon resin production facility can be processed to provide recycled content paraxylene (r-paraxylene), which can then be used to provide recycled content terephthalic acid (r-TPA) and / or recycled content polyethylene terephthalate (r-PET).

Disclosed is oligomerization of ethylene to form 1-hexene in combination with aromatization of the 1-hexene formed by oligomerization, to form benzene.

The present invention relates to a process for the production of propylene-based polymers from waste plastics feedstocks comprising the steps in this order of: (a) providing a hydrocarbon stream A obtained by hydrotreatment of a 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 a separation unit; (f) performing a separation operation in the separation unit to obtain a product stream E comprising propylene; (g) supplying the product stream E to a polymerisation reactor; and (h) performing a polymerisation reaction in the polymerisation reactor to obtain an propylene-based polymer; wherein in step (d): • the coil outlet temperature is ≥ 800 and ≤ 850 °C, preferably ≥ 805 and ≤ 835 °C; and • the weight ratio of steam to feed C is > 0.3 and < 0.8. Such process allows for optimisation of the quantity of waste plastic material that finds its way back into a polypropylene that is produced as outcome of the process. The higher that quantity is, i.e. the higher the quantity of chemical building blocks that are present in the waste plastic material that are converted to the produced polypropylene, the better the sustainability footprint of the process is. The process allows for circular utilisation of plastics. In addition, the process allows for increased efficiency in the production of polypropylene in that the fraction of propylene in the cracked hydrocarbon stream D is increased. A further advantage of the process of the present invention is that the overall energy consumption towards polypropylene is reduced.

The present invention relates to a process for the production of propylene-based polymers from waste plastics feedstocks comprising the steps in this order of: (a) providing a hydrocarbon stream A obtained by hydrotreatment of a 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 a separation unit; (f) performing a separation operation in the separation unit to obtain a product stream E comprising propylene; (g) supplying the product stream E to a polymerisation reactor; and (h) performing a polymerisation reaction in the polymerisation reactor to obtain an propylene-based polymer; wherein in step (d): • the coil outlet temperature is ≥ 800 and ≤ 850 °C, preferably ≥ 805 and ≤ 835 °C; and • the weight ratio of steam to feed C is > 0.3 and < 0.8. Such process allows for optimisation of the quantity of waste plastic material that finds its way back into a polypropylene that is produced as outcome of the process. The higher that quantity is, i.e. the higher the quantity of chemical building blocks that are present in the waste plastic material that are converted to the produced polypropylene, the better the sustainability footprint of the process is. The process allows for circular utilisation of plastics. In addition, the process allows for increased efficiency in the production of polypropylene in that the fraction of propylene in the cracked hydrocarbon stream D is increased. A further advantage of the process of the present invention is that the overall energy consumption towards polypropylene is reduced.

Provided is a continuous process for converting waste plastics into recycling for the production of chemical substances. This process includes a step of selecting waste plastics containing polyethylene and / or polypropylene, and a step of preparing a stable blend of the biofeedstock and the selected plastics. The amount of plastic in the blend constitutes 20 wt% or less of the blend. The blend is passed through a conversion unit. Useful chemical substances including C3 and C4 olefins and aromatics are recovered.

A method and device for preparing mesophase pitch, the method comprising: feeding a heavy oil raw material into a polymerization reactor after heating by a heating furnace; after reacting at a temperature of 400-480 DEG C for 3-24 hours, feeding into a flash tank to separate a distillate oil with a boiling point less than 350 DEG C, and feeding the rest of the material into a vacuum distillation column to separate a distillate oil with a boiling point less than 480-550 DEG C; feeding the bottom material of the vacuum distillation column into the heating furnace for thermal conversion, and finally feeding into a pitch granulator to contact with nitrogen for jet granulation to obtain mesophase pitch. The method and device provided by the application have the characteristics of simple process flow and easy control of process conditions, and solve the problem of difficult material taking caused by the large viscosity of mesophase pitch.

The invention provides an oil slurry gradient separation and fractional polycondensation process and system, and the process comprises the steps: cutting the oil slurry into four streams with different distillation ranges according to the order of final boiling points from low to high according to different hydrocarbon distribution conditions in the oil slurry, and enabling a heated second stream to enter a reactor to carry out a first-stage thermal polycondensation reaction; enabling the heated third stream to enter the reactor to be subjected to a second-stage thermal polycondensation reaction together with a reaction product of the first-stage thermal polycondensation reaction; enabling the heated first stream to enter the reactor in a gas form and pass through a reaction product of the second-stage thermal polycondensation reaction from bottom to top, discharging unreacted materials out of the reactor from the top, ending the reaction after the pressure in the reactor reaches normal pressure, and discharging the thermal polycondensation product out of the reactor from the bottom. According to the process, the thermal polycondensation product with more uniform product property and morphology structure can be obtained, the yield of the thermal polycondensation product is high, and the comprehensive utilization rate of the oil slurry can be improved.

The invention belongs to the technical field of synthetic fuel, and particularly relates to a method for synthesizing aviation kerosene by using CO and H2. The all-component aviation kerosene is obtained by taking CO and H2 as synthesis gas and adopting three-step cascade reaction (Fischer-Tropsch synthesis reaction, long-chain hydrocarbon isomerization and cracking reaction and olefin oligomerization and aromatization reaction) under the action of the catalyst, and the synthesis method is short in process.

Provided is a continuous process for converting waste plastics into recycling for polyethylene polymerization. This process includes a step of selecting waste plastics containing polyethylene and / or polypropylene, and a step of preparing a blend of the biofeedstock and the selected plastics. The amount of plastic in the blend constitutes 20 wt% or less of the blend. The blend is passed through an FCC unit. Liquefied petroleum gas LPG olefin / paraffin mixture and naphtha are recovered from the FCC unit and can be used for the production of polyethylene.

The present invention relates to a process for the production of propylene-based polymers from waste plastics feedstocks comprising the steps in this order of: (a) providing a hydrocarbon stream A obtained by treatment of a waste plastics feedstock; (b) providing a hydrocarbon stream B; (c) supplying a feed C comprising a fraction of the hydrocarbon stream A and 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 a separation unit; (f) performing a separation operation in the separation unit to obtain a product stream E comprising propylene; (g) supplying the product stream E to a polymerisation reactor; and (h) performing a polymerisation reaction in the polymerisation reactor to obtain an propylene-based polymer; wherein in step (d): • the coil outlet temperature is ≥ 800 and ≤ 850 °C, preferably ≥ 805 and ≤ 835 °C; and • the weight ratio of steam to feed C is > 0.3 and < 0.8. Such process allows for optimisation of the quantity of waste plastic material that finds its way back into a polypropylene that is produced as outcome of the process. The higher that quantity is, i.e. the higher the quantity of chemical building blocks that are present in the waste plastic material that are converted to the produced polypropylene, the better the sustainability footprint of the process is. The process allows for circular utilisation of plastics. In addition, the process allows for increased efficiency in the production of polypropylene in that the fraction of propylene in the cracked hydrocarbon stream D is increased.

Systems and methods are provided for conversion of renewable power into hydrocarbons, such as hydrocarbon fuels, via a methanol intermediate. In addition, it is desired to capture and reuse carbon dioxide in order to form these hydrocarbons. When the conversion of carbon dioxide is performed using hydrogen generated by electrolysis (preferably from renewable electricity), the management of process water is beneficial for reducing or minimizing the overall water requirements for the process as well as extending the lifetime of the electrolyzers. Systems and methods are also provided for recovery and purification of process water for recycle to the electrolyzers.

A process for producing olefins from methanol with an MTO catalyst and oligomerizing a resulting olefin stream with an oligomerization catalyst to produce an oligomerized olefin stream. Oligomerization may comprise a first stage ethylene and / or propylene oligomerization step followed by a second stage oligomerization step of the first stage oligomerized olefin stream to higher olefins. The oligomerized olefin stream can be separated into jet and diesel fuel streams.

Process and plant for converting olefins to a distillate fuel, the distillate fuel being at least one of jet fuel and diesel, the process comprising: i) supplying an olefin feed to an oli- gomerization section comprising at least one oligomerization reactor and withdrawing 5 from the oligomerization section an oligomerized product; ii) directly or indirectly supply- ing at least a portion of the oligomerized product to a distillate fuel fractionation section and withdrawing therefrom at least: ii-a) a first light fraction comprising hydrocarbons boiling in the jet fuel range; ii-b) a second light fraction of hydrocarbons, which is heavier than the first light fraction of hydrocarbons; ii-c) a third balancing heavy fraction compris-10 ing: hydrocarbons boiling in the diesel fuel range and hydrocarbons boiling in the jet fuel range; the third balancing fraction being heavier than the second light fraction of hydro- carbons; iii) supplying at least a portion of the second light fraction of hydrocarbons to the oligomerization section.

Processes for producing circular polyalphaolefins and polyalphaolefin-based products from used oils include the steps of introducing a used oil composition, or a feedstock containing a used oil composition and at least one other liquid, fuel, or oil, to a cracking unit to produce ethylene, oligomerizing the ethylene to form desirable normal α-olefins, oligomerizing the normal α-olefins into oligomers thereof, and hydrogenating the oligomers to form polyalphaolefins. The polyalphaolefin is mixed with additives and / or other oils to result in a product composition, which can be used in various end-use applications and then recycled into the process. In accordance with International Sustainability and Carbon Certificate standards, the product composition can be defined as circular, bio-circular, or bio- as determined by the mass balance attribution and / or the free attribution approach.

The present invention relates to a method for producing aviation fuel from an olefinic feedstock, the method comprising the following steps: a) a step of fractionating the feedstock and obtaining at least: - a first fraction rich in ethylene and in propylene; - a second fraction rich in olefinic compounds having at least 3 carbon atoms; b) a first step of oligomerising at least part of the first fraction from step a) and obtaining at least a first effluent; c) a second step of oligomerising at least: - part of the first effluent from step b), - part of the second fraction from step a), and obtaining a second effluent.

Provided is a continuous process for converting waste plastic into recycle for polyethylene polymerization. The process comprises selecting waste plastics containing polyethylene and / or polypropylene and preparing a blend of a bio feedstock and the selected plastic. The amount of plastic in the blend comprises no more than 20 wt. % of the blend. The blend is passed to a FCC unit. A liquid petroleum gas LPG olefin / paraffin mixture and naphtha are recovered from the FCC unit and can be passed on to make polyethylene.

The present invention describes a method to produce high purity hydrocarbon materials from renewable sources. The produced materials are chemically indistinguishable from highly refined mineral oils and / or synthetic hydrocarbons. These renewable hydrocarbon materials can be used as a drop-in replacement for mineral and synthetic hydrocarbon base oils, process fluids, white oils in products such as lubricants, rubber, personal care, pharma.