41results about "Treatment with polymerisation" patented technology

The invention relates to a method for preparing a gasoline component and an aviation fuel component through ethylene oligomerization, which comprises the following steps: contacting an ethylene-containing raw material with a first catalyst to carry out a first oligomerization reaction to obtain a first oligomerization product; the first catalyst comprises an FER structure molecular sieve; contacting the first oligomerization product with a second catalyst filled in the fixed bed reactor to carry out a second oligomerization reaction so as to obtain a second oligomerization product; the second catalyst is a molecular sieve catalyst and / or an amorphous silica-alumina catalyst; carrying out gas-liquid separation on the second oligomerization product to obtain a gas product and a liquid product, and carrying out distillation separation on the liquid product to obtain a C5-C9 fraction and a C9 + fraction; according to the method provided by the invention, the ethylene conversion rate is high, and the yield of C9 < + > fraction in the liquid product can be obviously improved.

A process for preparing an olefin stream for oligomerization includes fractionating the olefin stream to provide a light gas stream and an olefin-rich stream. Oxygenates are absorbed from the olefin-rich stream into a water wash stream to provide an oxygenate-rich water wash stream and a washed olefin stream. The washed olefin stream can then be oligomerized.

Methods for producing bio-olefins by fluidized catalytic cracking (FCC) may comprise introducing a feedstock comprising a C2-C4 bio-alcohol and a petroleum-based hydrocarbon feed into an FCC reactor containing a catalyst, wherein a concentration of the C2-C4 bio-alcohol in the feedstock is about 0.5 wt% to about 99.5 wt% and the C2-C4 bio-alcohol is introduced to a first reaction zone of the FCC reactor and the petroleum-based hydrocarbon feed is introduced to a second reaction zone of the FCC reactor, the first reaction zone being located spatially below the second reaction zone; dehydrating at least a portion of the C2-C4 bio-alcohol in the first reaction zone to produce a bio-olefin; cracking at least a portion of the petroleum-based hydrocarbon feed in the second reaction zone to produce a cracking product; and obtaining an FCC product comprising the bio-olefin and the cracking product.

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.

A process for dimerizing and oligomerizing olefins to distillate fuels in which the oligomerized product is subjected to hydrocracking and hydroisomerization in a single reactor to convert heavier oligomers to jet fuel range oligomers. A jet fuel product stream is removed from the side of a stripping tower and a heavy drag stream is produced from the bottom of the stripping tower to ensure that the end boiling point specification is met.

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 oligomerizing olefins into distillate fuels, wherein a recycle olefin stream is oligomerized with an input olefin stream in a first-stage oligomerization reactor, the first-stage oligomerization product is oligomerized in a second-stage oligomerization reactor to provide a second-stage oligomerization stream, and a recycle olefin stream is removed from the second-stage oligomerization stream.

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).

The invention provides a preparation method of bio-based olefin and bio-based polyolefin. Compared with a bio-based ethanol method or a biolipid method, the preparation method comprises the following steps: taking easily available low-cost biomass as a raw material, preparing bio-based synthesis gas through a gasification method, and then preparing bio-based olefin and bio-based polyolefin through a catalytic conversion reaction, purification and a catalytic reaction. According to the preparation method, carbon neutralization of polyolefin can be achieved, the preparation method has feasibility, the biomass raw materials are wide in source and extremely low in cost, and large-scale preparation is easier to achieve. The performance of the bio-based polyolefin prepared by the method provided by the invention is equivalent to that of coal-based polyolefin or petroleum-based polyolefin.

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.

A process for oligomerizing olefins into distillate fuels, in which a recycle olefin stream is oligomerized with a feed olefin stream in a first-stage oligomerization reactor. The first-stage oligomerized product is oligomerized in a second-stage oligomerization reactor to provide a second-stage oligomerized stream. The second-stage oligomerized stream is hydrogenated to produce fuel. A stripping column is used to prepare a hydrogenated fuel stream for fractionation.

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.

This disclosure relates to the production of chemicals and plastics using pyrolysis oil from the pyrolysis of plastic waste as a co-feedstock along with a petroleum-based, fossil fuel-based, or bio-based feedstock. In an aspect, the polymers and chemicals produced according to this disclosure can be certified under International Sustainability and Carbon Certification (ISCC) provisions as circular polymers and chemicals at any point along complex chemical reaction pathways. The use of a mass balance approach which attributes the pounds of pyrolyzed plastic products derived from pyrolysis oil to any output stream of a given unit has been developed, which permits ISCC certification agency approval.

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 process for oligomerizing olefins to distillate fuels which oligomerizes a recycle olefin stream with a charge olefin stream in a first-stage oligomerization reactor. The first-stage oligomerate is oligomerized in a second-stage oligomerzation reactor to provide a second-stage oligomerate stream. A recycle olefin stream is taken from said second-stage oligomerate stream.

The present application relates to the technical field of petroleum processing, in particular to a processing method of catalytic cracking light cycle oil, a processing device thereof and application of heavy components prepared by the processing method. The processing method comprises: (1) performing first distillation cutting on the catalytic cracking light cycle oil to obtain distillate oil rich in polycyclic aromatic hydrocarbons; (2) performing thermal polycondensation reaction on the distillate oil to obtain thermal polycondensation product; (3) performing second distillation cutting on the thermal polycondensation product to obtain light components and heavy components; in the distillate oil, the content of saturated hydrocarbons is ≤20 wt%, the content of monocyclic aromatic hydrocarbons is ≤10 wt%, and the content of polycyclic aromatic hydrocarbons is ≥70 wt%. The heavy components prepared by the processing method are used as raw materials of needle coke to produce needle coke, and the needle coke has the advantages of low sulfur and nitrogen content, low ash content, high true density and low thermal expansion coefficient, and meets the standard of GB / T 37308-2019 oil-based needle coke.

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.

A process for producing recycled poly-alpha-olefins and poly-alpha-olefin-based products from waste oil comprises the steps of introducing a waste oil composition or a feedstock containing a waste oil composition and at least one other liquid, fuel or oil into a cracking unit to produce ethylene, oligomerizing the ethylene to form desired normal alpha-olefins, the normal alpha-olefin is oligomerized into an oligomer thereof, and the oligomer is hydrogenated to form a poly alpha-olefin. The poly-alpha-olefin is mixed with additives and / or other oils to produce a product composition that can be used for a variety of end-use applications, and then recycled into the process. The product composition may be defined as cyclical, bio-cyclical, or biological according to international sustainability and carbon certification standards, as determined by mass equilibrium attribution and / or free attribution methods.

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.

A process for oligomerizing olefins to distillate fuels which oligomerizes a recycle olefin stream with charge olefin streams in a first-stage oligomerization reactor. The first-stage oligomerate is oligomerized in a second-stage oligomerzation reactor to provide a second-stage oligomerate stream. A recycle olefin stream is taken from said second-stage oligomerate stream. A dealkanizer column can be used to remove light alkanes that would be inert and accumulate in a recycle loop. The second-stage oligomer product stream is hydrogenated to produce fuels.

The invention relates to a method for producing a polymer from a waste plastic feedstock, comprising the following steps in sequence: (a) providing a hydrocarbon stream A obtained by processing the waste plastic feedstock; (b) optionally providing a hydrocarbon stream B; (c) supplying a feed C comprising a portion of the hydrocarbon stream A and a portion of the hydrocarbon stream B to a thermal cracking furnace comprising a cracking coil; (d) performing a thermal cracking operation in the presence of steam to obtain a cracked hydrocarbon stream D; (e) feeding the cracked hydrocarbon stream D to a separation unit; (f) carrying out a separation operation in a separation unit to obtain a product stream E comprising monomers; (g) supplying the product stream E to the polymerization reactor; and (h) performing a polymerization reaction in the polymerization reactor to obtain a polymer. The method of the present invention allows optimization of the amount of waste plastic material that can be returned to the polymer produced as a result of the method.

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.