77 results about "Octane rating" patented technology

Blending a finished gasoline using a gasoline blending model that is derived from correlations between empirically measured octane numbers and spectral features identified in near-infrared (NIR) spectral data for a group of gasolines and gasoline subcomponents. The correlations are incorporated into generalized blend models for motor octane number and road octane number, which are incorporated into programing executed by a controller that controls the volumetric blend ratio of one or more neat gasolines and / or gasoline sub-components to produce a finished gasoline. In some embodiments, the NIR spectral data utilized for developing the model is contributed by analysis of multiple subsets of gasolines and gasoline subcomponents, where each subset is analyzed by a different NIR spectrometer.

The present invention belongs to the technical field of molecular dynamics models, and specifically relates to a method for constructing a molecular-level catalytic cracking process reaction kinetics model that incorporates oil property calculation capabilities. Verified by industrial data, the model provided by the present invention shows a high degree of agreement between the calculated values ​​for catalytic cracking product yield, product group composition content, product typical molecular content, and gasoline and diesel distillation ranges and industrial values. The relative errors of gasoline density and octane number, as well as diesel density and cetane number, compared with industrial data are all less than 2.2%, demonstrating that the molecular-level catalytic cracking process reaction kinetics model that incorporates oil property calculation capabilities has high reliability and can predict product composition and properties at the molecular level.

The utility model belongs to the field of high-octane gasoline production, and particularly relates to a device for producing high-octane gasoline from topped oil through non-hydroisomerization. The raw material conveying pump is connected with the C4 feeding device through a valve and is used for conveying the raw materials; the raw material / reaction product heat exchanger is connected with the raw material conveying pump and is used for carrying out heat exchange on the raw materials; according to the utility model, the topped oil of the reforming device is used as a raw material, a second-section feeding process and a third-section feeding process are added in the reactor, and a circulating gas process from the outlet of the compressor to the reaction system is added, so that the raw material / reaction product is obtained. Under the non-hydrogen condition, the reaction depths of alkane cracking, selective hydrogenation, isomerization and the like of the low-octane-number topped oil are improved on the basis of the catalyst, the low-octane-number topped oil is converted into the high-octane-number gasoline blending component, the octane number of the produced gasoline can reach 89-90, the saturated vapor pressure is 65-80 kPa, the improvement cost is low, and the production operation is simple.

Methods and systems for improving operation of a gasoline desulfurization system may include receiving gasoline blending pool data, the gasoline blending pool data indicative of one or more of a sulfur concentration, a current inventory, or an octane number of each current component of a gasoline blending pool. A machine learning model generates a light naphtha sulfur target for a light naphtha produced from a selective hydrogenation reactor of a gasoline desulfurization system based on the gasoline blending pool data and generates a heavy naphtha sulfur target for a desulfurized heavy naphtha produced from a hydrodesulfurization reactor of the gasoline desulfurization system based on the gasoline blending pool data. The machine learning model may be trained on historical data of the gasoline blending pool and historical data of operating parameters, resulting product attributes, and composition from the gasoline desulfurization system, including sulfur concentration and octane number.

The present invention relates to a synergistic antiknock fuel additive comprising a mixture of N-methyl-p-anisidine and m-toluidine in a volume ratio from 45:55 to 95:5; to the use of said fuel additive to increase the octane rating of a gasoline; and to a gasoline fuel composition comprising said fuel additive.

The present application relates to the technical field of aviation gasoline, and discloses unleaded aviation gasoline and a preparation method thereof.The unleaded aviation gasoline comprises: 75-85 wt% of polymethylbenzene, and 15-25 wt% of at least two of alkylate, a side line distillation component of an alkylate device, light naphtha and isopentane; wherein the motor octane number of the polymethylbenzene is not less than 108.The product quality index of the unleaded aviation gasoline meets the standard of the American Society for Testing and Materials, that is, the technical requirement of ASTM D7719-2018 high-aromatic unleaded aviation gasoline.The unleaded aviation gasoline has the characteristics of good component continuity, stable combustion and high motor octane number, and meets the high-standard use requirement of unleaded and high-octane aviation gasoline.

The utility model discloses an online real-time gasoline octane number detection monitor, which relates to the technical field of gasoline detection and comprises a crude oil process pipeline, a U-shaped detection pipe and a mounting plate. The device comprises a U-shaped detection pipe, the U-shaped detection pipe is fixedly installed at the bottom of a crude oil process pipeline, the two ends of the U-shaped detection pipe are both communicated with the crude oil process pipeline, a first valve body and a second valve body are installed in one end of the U-shaped detection pipe from top to bottom, and a reflux pump and a partition plate located above the reflux pump are installed in the other end of the U-shaped detection pipe. The PLC controls the servo motor to open or close the first valve body and the second valve body through the screw rod, the inner threaded pipe, the rack and the gear, an oil product is sampled, the octane number of the oil product is detected by the measuring probe, a detection result is transmitted to the measuring instrument and then passes through the measuring instrument, and the detection result is transmitted to a user side through a wireless data transmission function of the PLC. On-line detection and monitoring on the quality of crude oil are realized, and the quality of the oil product during delivery is ensured.

This specification discloses a gasoline fuel component mainly containing C4 - C9 n - paraffins, C4 - C9 mono - branched i - paraffins, and C4 - C9 multi - branched i - paraffins. In the gasoline fuel component, the weight ratio of at least certain i - paraffins to certain n - paraffins is higher than that in gasoline components of the prior art. This gasoline fuel component can provide improved blendability, octane number, and combustion characteristics.

This invention relates to the field of new energy and liquid carbon fuel technology, specifically to a high-cleanliness methanol alternative fuel for vehicles and its preparation method. The method includes raw material mixing and vaporization, atmospheric pressure gas-phase catalysis, and multi-stage condensation and separation steps. The method combines base methanol with hydrocarbon additives and introduces them into a composite mixed-bed molecular sieve catalyst containing aromatic cascade, etherification, and alkylation active units, as well as an anti-coking flow carrier. Its core principle is to enhance the octane number by following the atmospheric pressure gas-phase aromatization and cascade mechanism, generate ethers in situ as phase stabilizers and hydrogen bonding agents, and utilize a mesoporous carrier to reduce steric hindrance and promote macromolecular desorption. This invention differs from the high-pressure reaction conditions of traditional methanol-to-gasoline processes by overcoming the defects of methanol fuel phase separation upon contact with water and catalyst coking through a one-step atmospheric pressure gas-phase conversion. It eliminates the need for physical co-solvents and significantly extends the catalyst regeneration cycle.

The application discloses an engine ignition angle adjusting method, device, equipment and storage medium, and the method comprises the steps of detecting the knock intensity of the engine, controlling the ignition angle of the engine according to the knock intensity, and adjusting the ignition angle of the current gasoline octane number according to the knock back angle of the ignition angle. According to the application, the ignition angle of the engine is controlled according to the knock intensity, and the ignition angle of the current gasoline octane number is adjusted according to the knock back angle of the controlled ignition angle, so that the ignition angle can be adjusted according to different gasoline octane numbers, the knock intensity of the ignition angle at the time of ignition is adjusted, and the performance of the engine is improved.

A high-octane renewable base gasoline composed of a reformate renewable base component and an isomerate base component is described, wherein said base gasoline is present in a high octane fully renewable gasoline fuel composition.

The utility model discloses a knock detector for a motor octane number tester, which belongs to the technical field of knock detectors and comprises a shell and an inner core positioned in the shell, and an initial coil with N turns and D diameter is wound on the inner core; the device is characterized in that the initial coil comprises a first initial coil and a second initial coil; the first initial coil and the second initial coil are connected through an additional coil; the diameter of the additional coil is 0.5 D. The number of turns of the additional coil is N. The coil of the knock detector is optimally designed and improved, so that the sensitivity of the knock detector is remarkably improved. By means of the improvement, the knock detector can more sensitively capture tiny changes in the oil combustion process in the detection process, and therefore the detection precision is greatly improved. Therefore, the measured octane number result of the oil product is more accurate and reliable, and more accurate data support is provided for evaluation of the quality of the oil product.

To provide an engine system capable of improving combustion stability while preventing constant combustion.SOLUTION: A fuel injection device 11,12 that injects a main fuel, a first fuel having a combustion speed faster than that of the main fuel, and a second fuel having an octane number higher than that of the main fuel into the combustion chamber 5 as a fuel is provided, and when an engine load is less than a switching load Tx, the main fuel and the first fuel are injected into the combustion chamber 5; Further, the fuel injection device 11,12 is controlled so that the first fuel is injected after the main fuel is injected, and when the engine load is the switching load Tx or higher, the fuel injection device 11,12 is controlled so that the main fuel and the second fuel are injected into the combustion chamber 5 and the second fuel is injected after the main fuel is injected.SELECTED DRAWING: Figure 5

A gasoline fuel composition for a spark-ignition internal combustion engine, the gasoline fuel composition comprising (a) renewable naphtha at a level of 40% to 60% volume / volume, (b) an oxidized hydrocarbon at a level of 15% to 25% volume / volume, and (c) an aromatic hydrocarbon at a level of 25% to 45% volume / volume, 5 wherein the gasoline fuel composition has an RON of 87 or greater. Although the low octane number of renewable naphtha typically strictly limits its blendability in gasoline to a low level, the fuel composition of the invention allows the use of renewable naphtha at significant levels while maintaining a good octane rating for the entire composition.

The invention provides a catalytic diesel oil hydro-conversion method which comprises the following steps: (1) catalytic diesel oil and hydrogen enter a hydrofining reaction unit to react, and a hydrofining material flow is obtained after the reaction; (2) separating the hydrofined material flow obtained in the step (1) in a separator to obtain a light material flow and a heavy material flow; (3) the heavy material flow obtained in the step (2) enters a hydrocracking reaction unit to react, and a hydrocracking material flow is obtained after the reaction; and (4) separating the hydrocracking material flow obtained in the step (3) to obtain gas, gasoline and diesel oil. According to the conversion method, a high-octane gasoline product can be obtained at the initial stage of start-up by optimizing the technological process, and meanwhile, the cetane number of the diesel fraction is remarkably increased.

A control device for an internal combustion engine is provided with: a spark-ignition internal combustion engine; a sensor that detects the rotational speed and load of the internal combustion engine; and an ignition timing control unit that controls the ignition timing of the internal combustion engine on the basis of the rotational speed, the load, and the characteristics of a reference ignition timing determined to be the later one of an optimal ignition timing and a knock ignition timing that are predetermined on the basis of the rotational speed and the load. The optimal ignition timing is predetermined in accordance with the rotational speed and the load such that the torque is maximum. The knock ignition timing is predetermined so that knock does not occur when fuel of a reference octane number is supplied to the internal combustion engine. The ignition timing control unit calculates a first hysteresis amount obtained by multiplying the difference between the octane number of the fuel supplied to the internal combustion engine and the reference octane number by a predetermined hysteresis amount, corrects the knock ignition timing to be delayed by the first hysteresis amount, and controls the knock ignition timing according to the rotational speed and the load. When the operation region of the internal combustion engine is either a load region on the high load side from the optimal operation line or a maximum output region, a second hysteresis amount is calculated on the basis of the predetermined hysteresis amount, and the reference ignition timing is corrected to be delayed by the second hysteresis amount.

This invention provides a special lubricating oil for multi-fuel spark-ignition two-stroke engines used in unmanned aerial vehicles (UAVs) and its preparation method, belonging to the field of lubricating oil technology. The special lubricating oil for multi-fuel spark-ignition two-stroke engines for UAVs comprises, by weight percentage: base oil, 66-81 wt%; additives, 15-20 wt%; and diluent, 4-14 wt%. The base oil includes hydrocarbon-based oil, polyisobutylene, and synthetic esters, wherein the hydrocarbon-based oil is a mixture of 70-85 wt% Group III hydrogenated mineral oil and 15-30 wt% Group IV hydrocarbon synthetic oil. The additives include a composite detergent-dispersant, a composite anti-adhesion detergent, a friction-reducing and anti-wear agent, an antioxidant, an octane number improver, and a compounding agent, wherein the octane number improver is N-methylaniline. The diluent is aviation kerosene.

The invention discloses an additive for increasing gasoline octane number and reducing oil slurry without increasing liquefied gas as well as a preparation method and application of the additive. The preparation method comprises the following steps: step 1, stirring kaolin, pseudo-boehmite, alumina sol and a first solvent to obtain first slurry; step 2, adding an H-ZSM-5 molecular sieve, two Zn-containing compounds, a phosphorus-containing compound and a second solvent into the first slurry in the step 1 to obtain second slurry; and step 3, adjusting the pH value of the second slurry, adding macroporous bauxite, and continuing pulping, homogenizing, forming and roasting to obtain the additive for increasing the gasoline octane number and reducing the oil slurry without increasing liquefied gas. According to the catalytic cracking aid developed by the invention, the octane number of gasoline can be increased by 1-2 points under the conditions that the liquefied gas yield is not greatly increased and the gasoline yield is not reduced.

The invention relates to the technical field of chemical engineering, in particular to a gasoline octane number prediction method based on a near infrared spectrum. According to the near infrared spectrum-based gasoline octane number prediction method provided by the invention, when a partial least square method correction model is constructed, a target spectrum in a gasoline sample is preprocessed for at least one time, the preprocessed spectrums are spliced to obtain a spliced spectrum, then a target feature point is selected from the spliced spectrum, and the octane number of the gasoline sample is predicted according to the target feature point. Then taking the target feature point as a target feature variable, constructing a partial least square correction model according to the spliced spectrum and the octane number in each gasoline sample, finally performing at least one pretreatment on the near infrared spectrum to be detected of the gasoline sample to be detected, and then performing splicing treatment to obtain a spliced spectrum to be detected, and the spliced spectrum to be measured is input into the partial least square method correction model for prediction to generate a predicted octane number, so that the prediction accuracy is improved.

The utility model discloses a self-gravity infrared system octane number standard fuel automatic sample matching device, which relates to the technical field of sample matching and comprises a sample matching frame, a supporting plate is arranged on one side of the inner top of the sample matching frame, a plurality of gallon barrels are arranged on the top of the supporting plate, and weight detection components are arranged at the bottoms of the gallon barrels. A plurality of measuring tubes are arranged on the other side of the top of the sample distribution frame, a mixing assembly matched with the measuring tubes is arranged on one side of the inner bottom of the sample distribution frame, and infrared detection devices matched with the mixing assembly are arranged at the two ends of the outer portion of the sample distribution frame. According to the utility model, the weight of materials in the gallon barrel can be monitored in real time, the accuracy of each-time sample preparation is ensured, according to weight data fed back by the weighing sensor, when the materials in the gallon barrel reach a fixed value of blanking, the pinch valve is opened through the controller, the materials are conveyed into the hose, and the materials naturally flow into the hose under the action of self-gravity, so that the sampling accuracy is ensured. And no additional pump or pressurization equipment is needed.

The present invention discloses a method for preparing high-octane gasoline. The method uses methanol and naphtha as raw materials. The raw materials are contacted with an aromatization catalyst in a moving bed reactor for reaction. The reacted materials are separated to obtain high-octane gasoline. The catalyst is discharged from the bottom of the moving bed reactor and recycled back to the moving bed reactor directly or after regeneration. The method can improve the liquid yield of gasoline and the service life of the catalyst, and can continuously produce high-octane gasoline.

Control apparatus for spark ignition type of internal combustion engine, includes: sensor detecting rotation speed and load of engine; and ECU controlling ignition timing of engine based on rotation speed and load and characteristic of reference ignition timing. ECU: calculates first retard amount by multiplying difference between octane number of fuel currently supplied to engine and reference octane number by predetermined retard amount; compensates knock ignition timing to be retarded by first retard amount; and calculates second retard amount based on predetermined retard amount and compensates reference ignition timing to be retarded by second retard amount when operation region of engine defined by rotation speed and load becomes either one of predetermined load region higher in load than optimum operation line in which net fuel consumption rate of engine is highest or maximum output region in which output of engine is maximized.

The present application relates to the technical field of fuel production, and discloses high-octane aviation fuel production equipment, which comprises a raw material conveying pipeline, an input end of a preheater connected to an output end of the raw material conveying pipeline, a separation assembly, a non-condensable gas recovery assembly and a sealing assembly, the raw material conveying pipeline is externally provided with the separation assembly, and the separation assembly comprises a vertical tower body, a reboiler and a cooler. The high-octane aviation fuel production equipment is used for improving the octane value of aviation fuel and reducing the amount of lead additives, raw materials are conveyed through the raw material conveying pipeline, preheated by the preheater, sent into the vertical tower body from multiple feeding ports through the multi-head pipe, subjected to multi-stage separation of the tower tray and rectification filler and fine separation of the coalescence separation inner part, and subjected to efficient rectification separation, so that the octane value of industrial isooctane is improved, and the amount of lead additives in the preparation of aviation fuel is greatly reduced.

The invention relates to the field of petroleum refining, and discloses a gasoline preparation device and a gasoline preparation method. The device comprises a membrane mixing unit (300), an olefin removal unit (400) and an S-Zorb desulfurization unit (500) which are adjacent in sequence, and a raw oil feeding unit (100) is arranged on a connecting pipeline between the olefin removal unit (400) and the S-Zorb desulfurization unit (500) and used for feeding raw oil into the connecting pipeline. According to the technical scheme, the content of olefin in gasoline can be flexibly adjusted while desulfurization is carried out, octane number loss is reduced, and the gasoline fraction which is low in olefin content and octane number loss and meets the standard is obtained.

The utility model discloses a portable rapid gasoline octane number detection tool, which relates to the related technical field of gasoline detection equipment and comprises a detection instrument, a portable frame and a rolling assembly. The detecting instrument comprises a measuring instrument, a measuring head and a printer, the printer is electrically connected with the measuring instrument, and a wire is electrically connected between the measuring head and the measuring instrument; the lower left corner of the portable frame is fixedly connected with a grip, and the surface of the portable frame is provided with a first groove, a second groove and a third groove which are used for mounting and accommodating a tester, a measuring head and a printer respectively. The measuring instrument, the measuring head and the printer are integrated on the portable frame, the measuring instrument, the measuring head and the printer can be held at the same time by holding the handle with one hand, a long wire is wound in the carrying process and is not prone to being pulled by foreign objects, moving is convenient, the use flexibility is further improved, and the portable measuring instrument is suitable for being used in different measuring places; and the portability is greatly improved.

The invention relates to the field of production of high-octane gasoline from catalytic diesel oil, and discloses a method for rapidly producing high-octane gasoline from catalytic diesel oil at an initial start-up stage. The method comprises the following steps: carrying out a first passivation reaction on a hydrofining catalyst and a hydrocracking catalyst in the presence of passivated raw oil, hydrogen and a first passivation aid; performing a second passivation reaction on the first passivated hydrofining catalyst and the hydrocracking catalyst in the presence of passivated raw oil, hydrogen, a first passivation aid and a second passivation aid to obtain a passivated hydrofining catalyst and a passivated hydrocracking catalyst; switching the passivated raw oil into catalytic diesel oil, and reducing the injection amount of the first passivating aid and the second passivating aid until the injection amount is stopped; a mixed material containing catalytic diesel oil, a first passivation aid and / or a second passivation aid is sequentially contacted with a passivation hydrofining catalyst and a passivation hydrocracking catalyst, and gasoline is obtained. The method can obviously shorten the cycle that the octane number of the gasoline product reaches the standard at the initial stage of start-up.

The invention relates to the field of aviation fuel, and discloses an aviation gasoline composition containing a bio-based component and a preparation method thereof, and the aviation gasoline composition comprises the following components relative to the total weight of the aviation gasoline composition: 8-20wt% of C5 isoparaffin; the total content of the C6-C7 isoparaffin is 5 to 10 weight percent; the total content of C7-C9 aromatic hydrocarbon is 3 to 18 weight percent; the content of C8 isoparaffin is 40 to 65 percent; the content of the 2, 5-dimethylfuran is 10 to 30 weight percent; no more than 2 wt% of C4 alkane; and not more than 2wt% of alkane with the carbon number of C9 and above. The motor octane number of the aviation gasoline composition is not lower than 91, the aviation gasoline composition contains part of bio-based component 2, 5-dimethylfuran, does not contain metal additives, nitrogen-containing compounds and the like, can meet the use requirements of lead-free aviation gasoline, is simple in component type, safer, more environmentally friendly and low-carbon, and has a practical application prospect.

The invention discloses a method for producing clean gasoline by full-fraction gasoline aromatization, which comprises the following steps: S1, mixing full-fraction gasoline with hydrogen, then carrying out pre-hydrotreatment, and then distilling to obtain light-fraction gasoline and heavy-fraction gasoline; s2, mixing the heavy fraction gasoline with hydrogen, and carrying out hydrodesulfurization to obtain a heavy fraction gasoline product; s3, the light fraction gasoline and C4 liquefied gas are mixed and subjected to an aromatization reaction in the presence of an aromatization catalyst, a light fraction gasoline product is obtained, the C4 liquefied gas has the olefin content of 30-40 v% and the alkane content of 60-70 v%; and S4, blending the heavy fraction gasoline product and the light fraction gasoline product to obtain a clean gasoline product. According to the method, a light fraction gasoline aromatization reaction unit is added, the C4 liquefied gas is added, olefin in the C4 liquefied gas is converted into a high-octane-number product in a selective manner, olefin can be reduced, and octane number loss can be reduced at the same time.