95 results about "Jet fuel" patented technology

The present invention relates to a process for producing a jet fuel composition (12), the process comprising: a) Processing an oxygenate stream (1) in an Oxygenate-to-Olefin (OtO) unit (2) to produce an olefin stream (3); b) Separating the olefin stream (3) in a fractionation unit (4) into at least a C2-olefin-rich stream (5), a C3-olefin-rich stream (6) and a C4+-olefin-rich stream (7); c) Dimerizing at least a portion of ethylene contained in the C2-olefin-rich stream (5) to C4-olefins in a dimerization unit (20), thereby producing a dimerized product stream (21); d) Processing an oligomerization feed (8) comprising at least a portion of the C4+-olefin-rich stream (7) and at least a portion of the dimerized product stream (21) in an oligomerization unit (9) to produce an oligomerized olefin stream (10); e) Hydrogenating at least a portion of the oligomerized olefin stream (10).

The present invention relates to a process for producing a jet fuel composition (12), the process comprising: a) Processing an oxygenate stream (1) in an Oxygenate-to-Olefin (OtO) unit (2) to produce an olefin stream (3); b) Processing an oligomerization feed (8) comprising at least a portion of the olefin stream (3) in an oligomerization unit (9) to produce an oligomerized olefin stream (10); c) Hydrogenating at least a portion of the oligomerized olefin stream (10); wherein a fraction of the oligomerized olefin stream (10) is withdrawn as a recycle stream (40a, 40b) and passed to a steamcracking unit (41) to produce a steamcracking product stream (42), wherein at least a portion of the steamcracking product stream (42) is included in the oligomerization feed (8).

The present invention relates to a process for producing a jet fuel composition (12), the process comprising: a) Processing an oxygenate stream (1) in an Oxygenate-to-Olefin (OtO) unit (2) to produce an olefin stream (3); b) Providing an oligomerization feed (8) comprising at least a portion of the olefin stream (3) and at least a portion of an external C4+-olefin stream (30) comprising C4+-olefins; c) Processing the oligomerization feed (8) in an oligomerization unit (9) to produce an oligomerized olefin stream (10); d) Hydrogenating at least a portion of the oligomerized olefin stream (10).

A process for oligomerizing olefins to distillate fuels in the presence of a diluent for absorbing the exotherm. Oligomerization may comprise oligomerizing a charge olefin stream in a first-stage oligomerization reactor which is oligomerized in a second-stage oligomerization reactor to provide an oligomerate stream. The oligomers are hydrogenated and stripped to provide a stripped distillate stream. The diluent may be taken from the stripped distillate stream.

This application discloses a process for making jet fuel including: (1) oligomerizing an olefin stream to an oligomer stream; (2) hydrogenating said oligomer stream to provide a paraffin stream; (3) separating said paraffin stream to provide a jet fuel stream and a reformer feed stream; and (4) reforming said reformer feed stream to provide a reformed stream with an increased concentration of aromatics.

The present invention relates to a process for producing a jet fuel composition (12), the process comprising: a) Processing an oxygenate stream (1) in an Oxygenate-to-Olefin (OtO) unit (2) to produce an olefin stream (3); b) Separating the olefin stream (3) in a fractionation unit (4) into at least a C2-olefin-rich stream (5), a C3-olefin-rich stream (6) and a C4+-olefin-rich stream (7); c) Processing an oligomerization feed comprising a first oligomerization feed stream (8a) containing at least a portion of the C3-olefin-rich stream (6) and a second oligomerization feed stream (8b) containing at least a portion of the C4+-olefin-rich stream (7) in an oligomerization unit (9) to produce an oligomerized olefin stream (10); d) Hydrogenating at least a portion of the oligomerized olefin stream (10); wherein the oligomerization unit (9) comprises at least a first reaction zone (9a), and a second reaction zone (9b) downstream of the first reaction zone (9a); wherein the first oligomerization feed stream (8a) is introduced into the oligomerization unit (9) at a position upstream of the first reaction zone (9a), and the second oligomerization feed stream (8b) is introduced into the oligomerization unit (9) at a position downstream of the first reaction zone (9a) and upstream of the second reaction zone (9b).

This invention discloses an automated system and method for determining the trace total acid value of jet fuel. The system includes a sample moving unit, a titration unit, a nitrogen control unit, and a jet fuel total acid value determination unit. The sample moving unit moves the titration cup containing the sample below the titration unit. The nitrogen control unit maintains a nitrogen atmosphere inside the titration cup. The titration unit includes a porous burette, a burette tube, a photometric electrode, and a temperature electrode. The porous burette seals the titration cup. The titration unit injects titrant, mixed solvent, and mixed titration solvent into the titration cup, and determines the titration endpoint using the photometric and temperature electrodes. The jet fuel total acid value determination unit integrates the data from the titration unit to calculate the jet fuel total acid value. This invention eliminates endpoint errors that may result from subjective human judgment using manual indicators, and overcomes the need for machine vision technology, which requires the construction and intelligent training of a dataset of titration endpoint color images, in specialized instrument methods.

The application relates to a method for producing jet fuel from oil and fat raw materials, wherein the oil and fat raw materials are reacted with a hydrotreating catalyst in a hydrotreating reaction zone, the obtained liquid hydrocarbons are introduced into a first hydroisomerization reaction zone, an optional second hydroisomerization reaction zone is arranged, the obtained diesel oil fraction is recycled into the first hydroisomerization reaction zone or introduced into the second hydroisomerization reaction zone for reaction, and the reaction effluent is separated to obtain jet fuel. The application can produce high-quality biological jet fuel at a high yield.

Disclosed are systems and methods for producing renewable alcohols by fermentative processes using cell lysate or a combination of cell lysate and whole cells, as well as the cell lysate itself. The disclosure also provides processes and systems for converting renewable alcohols to transportation fuels, such as, gasoline, jet fuel, and diesel fuels.

A process for producing a jet fuel fraction (41), said process comprising steps of feeding at least one of a biogas stream (1), a carbon dioxide stream (2), or a methane stream (3), and at least a fraction of a tail gas recycle stream (32), to a reformer section (10) to provide a synthesis gas stream (11); feeding said synthesis gas stream (11, 22) to a synthesis section (30) to provide a stabilized condensate stream (31), a liquid wax stream (38), the tail gas recycle stream (32) and a concentrated oxygenate recycle stream (36); refining at said stabilized condensate stream (31) and liquid wax stream (38) in a refinery section (40) to provide a jet fuel fraction stream (41); and recycling said concentrated oxygenate recycle stream (36) to a biogas plant, and a plant for carrying out the process.

The utility model relates to an automatic tester for the total acid value of jet fuel, which comprises a machine table, a titration device, an aeration device, a light source, a reflecting mirror, a camera and a controller, and a test station and a collection station are arranged on the machine table; the aeration device comprises an aeration pipe, a gas supply control element, a moving mechanism and a cleaning mechanism, the moving mechanism drives the aeration pipe to move, and the aeration pipe is communicated with a nitrogen source through the gas supply control element; the cleaning mechanism comprises an inner flushing assembly for flushing the inner wall of the aeration pipe and an outer flushing assembly for flushing the outer wall of the aeration pipe. After the test sample is measured, the moving mechanism controls the aeration pipe to lift and move to the collecting station, and then controls the inner flushing assembly and the outer flushing assembly to start, so that the inside and the outside of the aeration pipe can be flushed, and flushing wastewater is collected at the collecting station. And the flushed aeration pipe is translated to the test station again to wait for starting the next measurement. Moving and cleaning of the aeration pipe are controlled by the controller, automatic execution can be achieved, and labor is saved.

The invention belongs to the field of stoichiometry, and relates to a preparation method of a standard substance, in particular to a jet fuel water separation index standard substance and a preparation method thereof, a plurality of emulsifiers are screened out and are used for preparing the water separation index standard substance, so that the quantity value stability of the standard substance is greatly improved, and the stability of the standard substance is remarkably prolonged; when in use, the water separation index tester does not need to be prepared and used immediately, is convenient to operate, and improves the simplicity, accuracy and stability of verification and calibration of the water separation index tester.

Provided are an apparatus and a method for producing a synthetic fuel with which it is possible to obtain a hydrocarbon having a high selectivity of jet fuel components and to produce a jet fuel at a high yield. A synthetic fuel production device (1) for producing a predetermined synthetic fuel by a direct FT synthesis reaction using a raw material gas containing hydrogen gas and carbon dioxide, the synthetic fuel production device (1) being provided with: a reactor (9) having a cylindrical reactor main body section (9a) filled with a predetermined FT catalyst (20) for generating a direct FT synthesis reaction; a raw material gas flow rate adjustment unit (7) and / or composition adjustment units (5a, 5b) for adjusting the flow rate of the raw material gas supplied to the reactor (9); and a control device (3) that controls the linear velocity, which is the flow rate of the raw material gas per unit cross-sectional area of the reactor main body section (9a), by controlling the raw material gas flow rate adjustment section (7) and / or the composition adjustment sections (5a, 5b), and that controls the linear velocity to 0.2 m / sec to 4.0 m / sec when a given synthetic fuel is a jet fuel.

The utility model discloses distillation equipment for biological aviation kerosene production, which relates to the technical field of distillation equipment and comprises an equipment main body, an electric push rod is fixedly connected to the outer wall of the equipment main body, and one end of the electric push rod is fixedly connected with a lifting plate slidably connected with the outer wall of the equipment main body. The outer wall of the lifting plate is rotationally connected with a pulling rod, and one end of the pulling rod is rotationally connected with a connecting rod. By arranging the pull rod, when auxiliary aviation kerosene production is carried out through distillation equipment, in order to improve the synchronous protection effect on a distillation head and the shielding protection effect on the top of a collecting box under the condition that an oil drum is switched for use, the lifting plate ascends through rotation of the pull rod; and a connecting rod fixedly connected with a limiting rod is driven to slide, so that a first protection plate moves to the position below the distillation head, a second protection plate moves to the top of a collection box, the situation that kerosene leaks and is wasted is reduced, and the aviation kerosene production efficiency of the distillation equipment is improved.

Plant and process for converting a gaseous hydrocarbon feed to methanol, optionally to a transportation range fuel such as any of a gasoline product, a jet fuel product, and a diesel product; the plant including a synthesis gas section, a methanol synthesis section, optionally and a transportation range fuel synthesis section. The plant also includes diverting and supplying a purge gas from the methanol synthesis section to a water gas shift (WGS) section, CO2-removal section, and a first hydrogen purification section. In an embodiment, the first hydrogen purification section provides a first H2-rich gas, a second H2-rich gas, and a first hydrogen purification section off-gas. One or more fired heaters are suitably arranged to receive at least a portion of the second H2-rich gas.

An aircraft propulsion system includes a compressor section, a combustor section, and a fuel system assembly. The compressor section includes a plurality of inlet guide vanes, an inlet guide vane actuator (IGVA), and an IGVA servo. The IGVA is operably coupled with the plurality of inlet guide vanes. The IGVA servo is connected in fluid communication with the IGVA. The combustor section includes a combustor. The fuel system assembly includes a jet fuel system and a hydrogen fuel system. The jet fuel system is connected in fluid communication with the combustor. The hydrogen fuel system is connected in fluid communication with the combustor and the IGVA servo. The hydrogen fuel system is configured to direct the hydrogen fuel to the IGVA servo to control a position of the IGVA.

A process for oligomerizing olefins to distillate fuels in the presence of a diluent for absorbing the exotherm. Oligomerization may comprise oligomerizing a charge olefin stream in a first-stage oligomerization reactor which is oligomerized in a second-stage oligomerization reactor to provide an oligomerate stream. The oligomers are hydrogenated and stripped to provide a stripped distillate stream. The diluent may be taken from the stripped distillate stream.

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.

A new catalyst hydroisomerizes Cl 8 paraffins from fatty acids to a high degree to produce a composition with acceptable freeze point which retains 18 carbon atoms in the hydrocarbon molecule for jet fuel. We have discovered a fuel composition comprising at least 14 wt% hydrocarbon molecules having at least 18 carbon atoms and a freeze point not higher than -40°C. The composition also may exhibit a exhibiting a final boiling point of no more than 300°C. The hydroisomerization process can be once through or a portion of the product diesel stream may be selectively hydrocracked or recycled to hydroisomerization to obtain a fuel composition that meets jet fuel specifications.

The process allows for the separation of the liquid hydrocracking stream from the liquid hydrogen isomerization stream, and thus the preservation of heat in the hydrocracking stream. Preserving heat in the hydrocracking stream avoids the need to reheat the hydrocracking stream before product fractional distillation. In particular, kerosene in the hydrocracking stream is not cooled in the hydrogen isomerization stream and is then reheated in fractional distillation for distillation of kerosene-range hydrocarbons from diesel-range hydrocarbons.

The application discloses a method for preparing jet fuel by mixing a direct coal liquefaction crude oil fraction with an indirect coal liquefaction crude oil fraction, hydrogenating and refining the mixture, and separating the mixture to obtain the jet fuel. The preparation method is simple, and the prepared jet fuel has good indexes.

The present invention relates to a jet fuel composition comprising, relative to the total volume of the composition: a. 9% to 60% by volume of a jet fuel according to standard ASTM D1655-21-c; b. 30% to 90% by volume of a renewable synthetic kerosene base derived from the hydrotreatment of esters and fatty acids, the Fischer-Tropsch process or a process for producing jet fuels from alcohols; and c. 1% to 15% by volume of an aromatic binder comprising at least 70% by weight, preferably 80% by weight, of a C8-C12 aromatic compound, relative to the total weight of the aromatic binder.

This invention relates to the chemical industry and discloses a method for hydrodesulfurization and denitrification of high-nitrogen jet fuel. The method includes the following steps: (1) in the presence of hydrogen, the jet fuel raw material undergoes a gas-phase desulfurization reaction in a first hydrotreating reactor to obtain a gas-phase desulfurization reaction product; (2) the gas-phase desulfurization reaction product is subjected to gas-liquid separation to obtain a gas phase component and a liquid phase component; (3) the liquid phase component is pressurized and then subjected to a liquid-phase denitrification reaction in a second hydrotreating reactor to obtain a liquid-phase denitrification reaction product; wherein the nitrogen content in the jet fuel raw material is ≥10 μg / g. This method allows for the production of qualified jet fuel products under more moderate process conditions using high-nitrogen jet fuel as raw material, while also improving chemical reaction efficiency and reducing energy and hydrogen consumption.

A process for the production of sustainable aviation fuel (SAF) with low carbon intensity. The jet fuel is produced from the reaction of hydrogen from the electrolysis of water with captured carbon dioxide. The hydrogen and carbon dioxide are reacted to product a stream comprising carbon monoxide. Hydrogen and carbon monoxide are reacted to produce n-alkanes. Alkanes are hydroisomerized to produce sustainable aviation fuel with low carbon intensity.

The invention discloses a biological aviation oil automatic blending parameter optimization method and system, and is suitable for new biological aviation oil blending scenes of aviation oil guarantee units. The method comprises the steps of verifying a supplier report, detecting biomass aviation oil on line, establishing a batch database, calibrating parameters of a blending model, carrying out ground combustion test verification, dynamically solving an optimal blending proportion through an MPC algorithm, precisely controlling raw material mixing according to the proportion and carrying out closed-loop feedback, and carrying out self-adaptive re-optimization if new batch parameters exceed the limit. The system comprises a pretreatment unit, an online detection unit, a blending execution unit, a central control unit and a safety interlocking unit. The problem of batch fluctuation of the biological aviation oil is solved, the performance and cost of the mixed aviation oil are considered, the blending precision and efficiency are improved, aviation safety is guaranteed, and large-scale application of the biological aviation oil is assisted.

Processes for removing oil and other organics especially lipids from process steams comprising lipids, brown grease, and water is disclosed and a process to remove metals and organics from leachate from landfills and other waste sites that generate contaminated water streams. The processes may involve adjusting pH and using electrical fields generated by a device comprising electrodes to induce gas bubbles. The gas bubbles facilitate movement toward the surface of the solution where they may be skimmed off and recovered. Processes are also described that upgrade brown grease to usable precursors for make beneficial products such as jet fuel. Other processes described herein include removal of carbon char from pyrolysis products like tires, plastics, rubbers, municipal solid waste, and oil or sewage sludge.

An aircraft propulsion system includes a combustor, an engine oil system, and a fuel system assembly. The engine oil system includes a fuel-oil heat exchanger. The fuel system assembly includes a jet fuel system, a hydrogen fuel system, and a switching valve. The jet fuel system and the hydrogen fuel system are connected in fluid communication with the combustor. The jet fuel system is selectively connected in fluid communication with the fuel-oil heat exchanger by the switching valve. The hydrogen fuel system is selectively connected in fluid communication with the fuel-oil heat exchanger by the switching valve. The switching valve is configurable between a first circuit flow path and a second circuit flow path. The switching valve configured in the first circuit flow path directs the jet fuel through the fuel-oil heat exchanger. The switching valve configured in the second circuit flow path directs the gaseous hydrogen fuel through the fuel-oil heat exchanger.

The invention discloses an automatic determination system for a jet fuel water separation index. The automatic determination system comprises an automatic sample injector, an emulsifying and filtering device, a sample receiving and detecting device and a system control device, the automatic sample injector is used for supplying a sample to be detected; the emulsifying and filtering device comprises a sample pool, a liquid adding unit, an ultrasonic emulsifying unit and a propelling unit; the sample receiving and detecting device comprises a moisture coalescer, a sample detecting tube and a light detecting unit which are connected through a pipeline; the bottom of the sample pool is communicated with an automatic sample injector and a moisture coalescer through a valve group; the light detection unit comprises a light source and at least two light detectors; and the system control device is used for controlling the operation of each execution component in the automatic sample injector, the emulsifying and filtering device and the sample receiving and detecting device. According to the determination system, an automatic determination process of sample introduction, emulsification, filtration and optical detection can be realized, the detection efficiency of the water separation index of the jet fuel and the accuracy and reliability of a detection result are remarkably improved, and the dependence on the proficiency of operators is reduced.

The invention discloses a catalyst for preparing high-density jet fuel and a preparation method of the catalyst, and belongs to the technical field of preparation of high-density jet fuel. The catalyst comprises a hydrofining agent and a hydroisomerization agent, the hydrofining agent is prepared by taking Ni, Mo and W as active components and gamma-Al2O3 as a carrier through an equivalent-volume impregnation method, the loading capacity of NiO is 3-6%, the loading capacity of MoO3 is 10-20%, the loading capacity of WO3 is 5-12%, and the balance is the gamma-Al2O3 carrier; the hydroisomerization agent is prepared by taking Pt and Pd as active components and gamma-Al2O3 < 3 + > molecular sieve Y as a carrier and adopting an equivalent-volume impregnation method, the loading capacity of Pt is 0.1-2.0%, the loading capacity of Pd is 1-5%, and the balance is the gamma-Al2O3 and molecular sieve Y carriers. The coal tar-based high-density jet fuel is prepared from the high-temperature coal tar hydrogenated oil cut light fraction before 190 DEG C as a raw material under the action of the hydrogenation catalyst, and the catalyst has the advantages of good hydrogenation effect, no need of adding a solvent, high yield of the high-density jet fuel, excellent performance index and industrial application prospect.

An aircraft propulsion system includes a combustor section, an engine oil system, and a fuel system. The combustor section includes a combustor forming a first portion of a core flow path through the aircraft propulsion system. The engine oil system includes a fuel-oil heat exchanger. The fuel system assembly includes a jet fuel system and a hydrogen fuel system. The jet fuel system is connected in fluid communication with the combustor and configured to selectively direct a jet fuel to the combustor. The hydrogen fuel system is connected in fluid communication with the combustor and configured to selectively direct a hydrogen fuel to the combustor. The hydrogen fuel system is further connected in fluid communication with the fuel-oil heat exchanger.