63 results about "Saturation rate" patented technology

The method for producing low-sulfur gasoline includes the following steps: cutting gasoline raw material into light fraction and heavy fraction, making the light fraction undergo the processes of alkali refinement treatment and removing mercaptans, making the heavy fraction and hydrogen gas together by contacted with hydrogenation desulfurization catalyst to make selective hydrogenation desulfurization reaction, then hydrogenated gasoline fraction undergo the process of hydrogenation or non-hydrogenation to remove mercaptans, then mixing the above-mentioned desulfurized light and heavy fractions so as to obtain the invented gasoline product whose olefine saturation rate is less than 30%, and sulfur content is less than 200 ppm.

The invention relates to a hyfrocracking method for producing a gasoline blending component with a high octane value. The hyfrocracking method controls aromatic saturation depth in a first reaction zone, that is, compared with a diesel oil raw oil, a saturation rate of aromatics with two or more aromatic rings in reaction effluent in the first reaction zone is over 60%, the content of monocyclic aromatics is increased to over 40 mass% on basis of liquid components of the reaction effluent in the first reaction zone; and at the same time, organic nitrogen content in feeding materials of a second reaction zone is no higher than 10 [mu]g.g<-1>. The method for controlling the aromatic saturation depth of a hydrofining section and reinforcing hydro-denitrification activity of a hydrofining catalyst, gasoline fractions with sulfur content less than 50 [mu]g / g and a research octane number higher than 90 can be produced from inferior diesel fractions with high content of the aromatics.

The present invention relates to a method intended for desulfation of a nitric oxide trap (22) and regeneration of a particle filter (24) arranged in an exhaust line (20) for treating exhaust gas from an internal-combustion engine (10), notably a Diesel engine. According to the invention, the saturation rate of the trap and the clogging rate of the filter are evaluated and, as soon as one of the rates reaches a threshold value, the fuel / air ratio of the exhaust gas is increased without it reaching fuel / air ratio 1, then desulfation of trap (22) is performed in association with regeneration of particle filter (24).

The invention provides an experimental calibration method. The method comprises utilizing an unsteady relative permeability and resistivity simultaneously-measuring mode (through oil layer water-flooding process simulation) to measure the water production rate, the saturation degree, the mixed-stratum water resistivity and the rock sample resistivity during an oil layer water-flooding process; determining experimental statistical relationships and key coefficients between the water production rate and the saturation degree, the water production rate and the mixed-stratum water resistivity (the mineralization degree), and the resistivity and the saturation rate through statistical regression; and serving the logging evaluation of the water production rate and the saturation rate of a water-flooded oil layer.

The invention provides an energy optimization based integrated stabilization device dual neural network self-tuning PID (Proportion Integration Differentiation) control method. The energy optimization based integrated stabilization device dual neural network self-tuning PID control method comprises establishing an integrated stabilization system model and serving the inclined angle of sea waves as the integrated stabilization system input; creating performance indexes according to the established integrated stabilization system model, wherein the performance indexes mainly comprise the roll angle variance, the fin angle saturation rate and the driving fin stabilizer system energy consumption; performing online adjustment on parameters of a PID controller through a dual neural network to implement the self-tuning of the PID parameters; adding a delay link into the PID controller under the real-time sea conditions; performing real-time adjustment on the delay time to enable the stabilization capability of a fin stabilizer and a stabilization tank to be fully achieved through an integrated stabilization system; performing real-time updating on the PID control parameters to obtain optimal PID parameter values and optimize the performance indexes of the integrated stabilization system. According to the energy optimization based integrated stabilization device dual neural network self-tuning PID control method, the requirements of the performance indexes of the ship stabilization can be met and the optimization time of the PID parameters can be saved so as to improve the practical application efficiency.

The method for producing low-sulfur gasoline includes the following steps: cutting gasoline raw material into light fraction and heavy fraction, making the light fraction undergo the processes of alkali refinement treatment and removing mercaptans, making the heavy fraction and hydrogen gas together by contacted with hydrogenation desulfurization catalyst to make selective hydrogenation desulfurization reaction, then hydrogenated gasoline fraction undergo the process of hydrogenation or non-hydrogenation to remove mercaptans, then mixing the above-mentioned desulfurized light and heavy fractions so as to obtain the invented gasoline product whose olefine saturation rate is less than 30%, and sulfur content is less than 200 ppm.

The invention relates to a preparation method of a polycarboxylate superplasticizer, belonging to the technical fields of building materials and cement concrete admixtures. The polycarboxylate superplasticizer is prepared by taking methylallyl polyethylene glycol and acrylamide as reaction monomers and sodium dodecyl sulfonate as a surface absorption activator, adding a chain transfer agent and an initiator, and finally, regulating the PH value to 6-7 by using an alkaline solution. The polycarboxylate superplasticizer is high in yield and good in performance; and due to the addition of sodium dodecyl sulfonate, the saturation rate of charges adsorbed by particles on a concrete surface can be increased, the flowability of cement in concrete stirring can be improved, the stirring time can be shortened, the efficiency can be increased, and an anti-adhesion effect is better taken. The polycarboxylate superplasticizer is simple in preparation process, low in cost, high in water reducing efficiency, good in cement and concrete compatibility and capable of effectively improving the flowability, slump constant, superstrength and durability of concrete.

To accurately detect phase current using a simple system constitution, to achieve high-quality driving from a low-speed rotation zone to a high-speed rotation zone, and to enable a motor to be driven at high efficiency. This motor drive unit comprises an induction voltage estimating means 17 that estimates the induction voltage of the motor from the input voltage, the output voltage, and the output current of an inverter; a rotator position and speed estimation means 18 that estimates the magnetic pole position and a rotational speed of the motor, on the basis of the estimated induction voltage; a PWM signal generation means 9 that generates a PWM signal for controlling the inverter, on the basis of the information of the estimated rotator magnetic pole position; a duty correction means 19 that corrects the duty of the generated PWM signal; and a boosting and step-down means 21 that calculates the voltage saturation rate, that is the degree of voltage saturation from the input voltage and a voltage command value applied to the motor, and varies the input voltage of the inverter according to the voltage saturation rate.

The invention discloses a busbar voltage control method for a brushless direct current motor-driven frequency converter. The method comprises the following steps: turning on a PFC; setting a target voltage saturation rate Ratio-target and reading an actual busbar voltage value Ed; calculating to obtain an actual voltage saturation rate Ratio-v-e; calculating to obtain a target busbar voltage value Ed-target; adjusting the PFC; changing the actual busbar voltage value Ed so as to enable the actual busbar voltage value Ed to approach the target busbar voltage value Ed-target. The busbar voltage control method can be used to adjust voltage in real time according to a load of a motor.

The invention relates to a method for removing polycyclic aromatic hydrocarbons from a diesel oil distillate. The method comprises that a diesel oil raw material oil is cut into a light diesel oil distillate and a heavy diesel oil distillate; the heavy diesel oil distillate is mixed with hydrogen, the mixture contacts a hydrorefining catalyst in a first reaction zone, and hydrodesulfurization, hydrodenitrogenation and selective hydrodearomatization are performed under hydrogenation reaction conditions; the effluent of the first reaction zone enters a second reaction zone and contacts a hydrorefining catalyst, and hydrodesulfurization, hydrodenitrogenation and selective hydrodearomatization are further performed under hydrogenation reaction conditions; the effluent of the second reaction zone is separated to obtain a hydrogenated heavy diesel oil distillate and a gas stream; and the hydrogenated heavy diesel oil distillate and the light diesel oil distillate are mixed to obtain the complete-distillate product, wherein the saturation rate of the polycyclic aromatic hydrocarbon in the complete-distillate product is 85-90% and the selectivity of the monocyclic aromatic hydrocarbon is 80-85% based on the diesel oil raw material oil. According to the present invention, with the method, the high-quality raw material is provided for the catalytic cracking or hydrocracking production ofhigh-octane number gasoline or BTX components while the hydrogen consumption of the hydrogenation process is reduced, and the process economy is easily improved.

The invention discloses a double-fiber fine-grain type asphalt mixture and a preparation method thereof. The asphalt-aggregate ratio of the asphalt mixture is 5.5 to 6.0 percent; asphalt is modified asphalt in which a non-amine anti-stripping agent accounting for 0.3 percent of the mass of the asphalt is doped; the nominal maximum particle size of aggregates is 13.2 mm; the passing rate of a screen hole of 4.75 mm is 25 to 30 percent, and the passing rate of a screen hole of 0.075 mm is 9 to 11 percent; the filler-bitumen ratio is 1.5 to 2.0; the porosity is 3 to 5 percent; the voids in the mineral aggregates is not less than 15 percent; the asphalt saturation rate is 65 to 80 percent; a fiber stabilizer is prepared from basalt fiber and lignin fiber; the basalt fiber is white flocculent basalt fiber, and the lignin fiber is gray granular lignin fiber; the fiber is automatically added into a blending pot through special fiber adding equipment. The double-fiber fine-grain type asphalt mixture disclosed by the invention is applicable to new construction and maintenance projects of expressways in southern high-temperature rainy districts in summer, and can effectively improve the resistance to rutting and water damage of an asphalt pavement and prolong the service life of the pavement.

An exposure level determination unit (33) determines, for a region of interest in an original image captured by a camera (2) using a first exposure level in a control cycle at a predetermined time point, a second exposure level which is an exposure level for the next control cycle, by calculating a transparent pixel saturation rate which is a ratio of transparent pixels having a saturated gradation value among transparent pixels in the region of interest, and changing the first exposure level according to the transparent pixel saturation rate.

There is provided a jitter measuring apparatus for measuring jitter in a signal-under-measurement, having a signal converting section for calculating a spectrum of the signal-under-measurement, a bandwidth calculating section for calculating frequency where a saturation rate of a value of the integrated spectrum of the signal-under-measurement becomes almost equal to a saturation rate set in advance in a band-to-be-measured set in advance as upper cutoff frequency of the band-to-be-measured to calculate the jitter and a jitter calculating section for measuring the jitter in the signal-under-measurement based on the spectaum in the band-to-be-measured of the signal-under-measurement.

The invention relates to a method for improving desulfurization selectivity of a catalyst. A catalyst selectivity regulation and control process is increased between a desulfurization process and a normal production process, and the catalyst selectivity regulation and control process is that activity catalytic raw materials are in contact with the catalyst for 24-96h in an atmosphere of activity catalytic gas under activity catalytic reaction conditions. By adopting the method provided by the invention, the selectivity of the catalyst can be improved. Compared with the prior art, under the situation that the sulfur content in a gasoline product is the same, the olefin saturation rate is lower and the loss in octane number of a product is smaller.

The invention discloses a low-seepage compact sandstone reservoir fluid saturation degree correction method, which comprises the following steps of performing sequencing according to the sum of the water-containing saturation degree and the oil-containing saturation degree; performing partitioning; 2, performing linear regression by using the oil-containing saturation degree as the x-coordinate and using the water-containing saturation degree as the y-coordinate according to the partitioning result obtained in the first step; solving the slope and the intercept; 3, converting the indoor test fluid saturation degree into the original stratum state through setting the two parameters of the crude oil rest rate c and the stratum water rest rate d; solving the crude oil rest rate c and the stratum water rest rate d according to the slope and the intercept in the second step; 4, correcting the water-containing saturation degree and the oil-containing saturation degree of the corresponding partitions according to the two parameters of the crude oil rest saturation rate c and the stratum water rest rate d solved in the third sep in each partition. The method has the advantages that the operation is simple; the calibration precision is high; the real fluid saturation degree can be accurately reflected; the coincident rate with the oil test result is higher.

The invention relates to the compound semi-conductor material technical field and discloses a high-speed GaAs-based composite channel MHEMT material. The MHEMT material consists of a lattice strain layer InAl<1-x>As, a channel lower barrier layer In0.52AL0.48As, a channel layer doped with InP, a channel layer without InP, a channel layer In0.53Ga0.47As, a space separation layer In0.52Al0.48As, a planar doping layer, a barrier layer In0.52Al0.48As and a highly-doped GaAs cap layer In0.53Ga0.47As which are in orderly epitaxial growth on a GaAs substrate. The invention combines the characteristics that the In0.53Ga0.47As has high electron mobility in low field, and the InP has high threshold energy and high saturation rate in high field, solves the disadvantage that a routine MHEMT device has low source / drain breakdown voltage, achieves the intentions of improving the source / drain breakdown voltage and ensuring that the device has excellent millimeter wave frequency characteristic.

The invention discloses an armature liquid insulating rotary baking and curing apparatus and a rotary baking method. A ferromagnetic part of an armature is provided with a plurality of winding slots into which windings can be embedded, the winding slots are arranged along a circumferential direction of the ferromagnetic part, the rotary baking apparatus also comprises an air seal part, and the airseal part can be used for injecting air towards slot openings of the winding slots. Under pressure caused by air injection, impregnation liquid can be prevented from flowing out from the winding slots under the effects of gravity; radial loss of the impregnation liquid along slit openings between the winding slots can be reduced in paint trickling processes and rotary baking and curing processesfollowing vacuum pressure impregnation of the armature; filling and impregnating saturation rates of the impregnation liquid can be improved after impregnation operation, cavities can be prevented from being formed in internal slit openings, slit openings via which the impregnation liquid naturally flows out can be blocked first during the processes, and capability of preventing intrusion of moisture and other mediums in external environment can be improved.

The invention discloses a process for producing high-strength cement by using industrial waste residues, which comprises the following process steps: 1) the production of a cement clinker: carrying out proportioning and controlling fed materials to carry out raw material grinding and raw material homogenizing according to a proportioning scheme that the high silicon rate N is 3.10, the high alumina rate P is 1.80 and the high limestone saturation rate KH is 0.80, feeding raw materials into a rotary calcining kiln to be calcined, and then producing the cement clinker; and 2) the production of a cement product: selecting six raw materials such as fly ash, stone powder, the cement clinker, desulfurization gypsum, dicyandiamide residues, and metal magnesium reduced powder by using a microcomputer to proportion in percentage by weight, controlling fed materials to carry out cement grinding and cement homogenizing, and then producing the cement product. The process disclosed by the invention has the advantages that the process both complies with the environmental-friendly concept of protecting the environment and reducing the pollution, and has the positive social effects of changing waste material into things of value and reducing the disposal and production costs of industrial waste residues, and produced cement is stable in quality and high in strength.

A method is intended for desulfation of a nitric oxide trap (22) and regeneration of a particle filter (24) arranged in an exhaust line (20) for treating exhaust gas from an internal-combustion engine (10), notably a Diesel engine. The saturation rate of the trap and the clogging rate of the filter are evaluated and, as soon as one of the rates reaches a threshold value, the fuel / air ratio of the exhaust gas is increased without it reaching a fuel / air ratio of 1, then desulfation of trap (22) is performed in association with regeneration of particle filter (24).

The invention provides a dynamic anti-saturation ship stabilization control method and system. The dynamic anti-saturation ship stabilization control method includes the steps that the amplitude and speed saturation states of a fin actuator are obtained; stabilization control over a ship is realized according to the amplitude and speed saturation states of the fin actuator; when no saturation occurs to the fin actuator, a dynamic anti-saturation controller is designed, a fin is driven to rotate, and stabilization control is finished; and when saturation occurs to the fin actuator, the dynamic anti-saturation controller is corrected and optimized, judgment on the amplitude and speed saturation states of the fin actuator is carried out again through an unconstrained robust controller until no saturation occurs to the fin actuator, the dynamic anti-saturation controller is designed, the fin is driven to rotate, and stabilization control is finished. When the ship stabilization fin system actuator has the work condition of amplitude and speed saturation states, through the combined action of the unconstrained robust dynamic output feedback controller and the dynamic anti-saturation controller, the fin angle saturation rate is lowered, and the system stabilization performance and robustness are guaranteed.

The invention provides a pressure air dissolving device of air float. The pressure air dissolving device comprises an air dissolving tank, a micro-nano bubble releasing device, and a reaction tank. The air dissolving tank is set to be a jet flow filling-free type; the hydraulic retention time of the air dissolving tank is 5 to 10 seconds, the normal work pressure in the air dissolving tank is 0.25 MPa; the dissolved air saturation rate of the air dissolving tank is 80% or more; the air dissolving tank is provided with an air inlet, a water inlet, and a water outlet, the water outlet is connected to the micro-nano bubble releasing device; and the micro-nano bubble releasing device is arranged in the bottom of the reaction tank. The provided pressure air dissolving device of air float has the advantages that the efficiency is high, the energy is saved, the device is easy to manage; the air dissolving tank and releasing device of conventional air dissolving device are improved, the volume of air dissolving tank is reduced, the bubble generating effect is improved, and the impurity removing rate is increased.

The present invention relates to an aromatic hydrocarbon-rich wax oil hydrotreating method, which comprises that: an aromatic hydrocarbon-rich wax oil raw material oil and a gas phase material discharged from a second thermal high pressure separator are mixed, and then enter a first reactor; the first reactor reaction product enters a first thermal high pressure separator; the liquid phase material of the first thermal high pressure separator and circulation hydrogen are mixed, and enter a second reactor, and the gas phase material is cooled and then enters a cold high pressure separator; the gas phase material of the cold high pressure separator is subjected to desulfurization through a hydrogen sulfide removing tower, and the obtained gas is subjected to pressure increase through a compressor, and then is mixed with the circulation hydrogen; the second reactor reaction product enters the second thermal high pressure separator; the liquid phase material of the second thermal high pressure separator and the liquid phase product of the cold high pressure separator are subjected to mixing pressure reduction, and then enter a thermal low pressure separator; and the separated thermal low pressure separator gas phase material and the thermal low pressure separator liquid phase material are respectively processed into various products. The process reaction results show that an aromatic hydrocarbon saturation rate is substantially increased, and a cracking performance of the aromatic hydrocarbon-rich wax oil can be substantially improved.

A disclosed production method for a jet fuel comprises (1) under a hydrofining reaction condition, contacting raw oil and hydrogen with a hydrofining catalyst; (2) contacting an effluent obtained in the step (1) with a hydrocracking catalyst under a hydrocracking reaction condition; and (3) separating the jet fuel from the effluent obtained in the step (2), wherein the aromatic hydrocarbon content in the raw oil is 40 wt% or more. In the step (1), the bicyclic aromatic hydrocarbon saturation rate in the raw oil is 45-85 under the effect of the hydrofining reaction condition. In the step (2), the monocyclic aromatic hydrocarbon saturation rate in the liquid fed material in the step (2) is 60-95% under the effect of the hydrocracking reaction condition. The method also can help to produce a high-density jet fuel according with GJB1603 6# jet fuel standard by employing catalytic cracking diesel oil as a raw material, and also high-quality diesel oil is concurrently produced.

A saturation rate-based road service level evaluation method comprises the following steps of: 1) determining and dividing road sections, and determining each analyzable road section; 2) preprocessing data to obtain traffic flow data and traffic flow geographic data; (3) standard traffic flow conversion: converting the input data, and uniformly converting large and small traffic flows passing through a road section into standard traffic flows; 4) density data is obtained through the flow and speed data, and a flow-density data set is obtained; 5) estimating a flow-density model, and fitting the data of the target road section by using Gaussian process regression to obtain a model; 6) obtaining the maximum traffic capacity, and solving the maximum traffic flow by using a particle swarm algorithm; 7) acquiring a saturation rate; and (8) matching a corresponding service level grade according to the saturation rate obtained in the step (7). Through an artificial intelligence method, the traffic condition information is obtained in time, a basis is provided for road management, and timely and effective measures are taken.

A method and corresponding circuit that adjusts the gain of an audio output stage having a class D amplifier, this method including the steps of setting the gain to a nominal value, analyzing an output signal during successive clock periods, counting the number of clock periods during which the signal is in a state corresponding to a saturation, decreasing the gain if the number reaches, before the end of a first time interval, a value corresponding to a first percentage, maintaining the gain constant if, at the end of a second time interval, different from the first interval, the number corresponds to a second percentage being comprised between the first percentage and a third percentage, and increasing the gain if, at the end of the second time interval, the number corresponds to a fourth percentage, lower than the third percentage.

The present invention provides a normally closed field effect transistor, belonging to the field of semiconductor devices. The normally closed field effect transistor comprises a substrate, at least two two-dimensional material layers mutually arranged at intervals and arranged at the upper side of the substrate, a source electrode arranged at the upper sides of the at least two two-dimensional material layers, a drain electrode arranged at the upper sides of the at least two two-dimensional material layers and arranged at intervals with the source electrode, barrier layers arranged at the upper sides of the at least two two-dimensional material layers and located between the source electrode and the drain electrode and at least one gate electrode arranged at the upper sides of the barrierlayers; and two-dimensional material fault areas are formed between each two adjacent two-dimensional material layers, and the edges of the at least one side of the two-dimensional material fault areas are extruded out of the side edges of projection areas of the gate electrodes on planes where the at least two two-dimensional material layers are located. The normally closed field effect transistor can ensure the migration rate and the electron saturation rate of the device body and has no performance loss while ensuring that the transistor can be pinched off to achieve normal off.

The invention discloses a method for producing low-sulfur gasoline. The method comprises the following steps of: (1) cutting a gasoline raw material into a light gasoline fraction and a heavy gasoline fraction, wherein the cutting point of the light gasoline fraction and the heavy gasoline fraction is 50-100DEG C; (2) performing alkali washing on the light gasoline fraction for desulfurization to obtain the desulfurized light gasoline fraction; (3) in the presence of hydrogen and a catalyst A, performing primary desulfurization reaction on the heavy gasoline fraction, and separating to obtain the hydrogenated and desulfurized heavy gasoline fraction; (4) in the presence of inert gas and a catalyst B, preforming secondary desulfurization reaction on the hydrogenated and desulfurized heavy gasoline fraction, and separating to obtain low-sulfur heavy oil fraction; and (5) mixing the light gasoline fraction obtained in the step (2) and the heavy gasoline fraction obtained in the step (4) to obtain a gasoline product. Compared with the prior art, the method has the advantages that: the gasoline produced by the method has low sulfur content and low olefin saturation rate and the method has high desulfurization selectivity.

The present invention discloses an aviation kerosene production method, which comprises that (1) hydrogen, raw material oil adopted as a fed liquid material, and a hydrorefining catalyst are subjected to a contact reaction; (2) aviation kerosene and diesel fuel are separated from the effluent obtained in the step (1); (3) at least partial diesel fuel obtained in the step (2), hydrogen and a hydrocracking catalyst are subjected to a contact reaction; and (4) the effluent obtained in the step (3) is conveyed into the step (1), and the effluent obtained in the step (3) and the raw material oil are adopted as the fed liquid material, wherein the aromatic hydrocarbon content in the raw material oil is more than or equal to 40 wt%, and the saturation rate of the total aromatic hydrocarbon in the fed liquid material is 75-95 wt% through the reaction condition in the step (1). According to the present invention, the catalytic cracking diesel fuel can be adopted as the raw material, the high density aviation kerosene meeting the GJB1603 6# jet fuel standard can be produced in the high yield manner, and the new process technology route is provided for production of the high value product from the low value catalytic cracking diesel fuel.

The invention discloses a compressor drive voltage saturation control method and device. When it is determined that the current voltage saturation rate is larger than the preset boundary value, the speed loop integral term value is controlled to be reduced according to the preset first speed amplitude till the current voltage saturation rate is lower than the preset boundary rate, in the speed loop integral term value reducing process, the speed loop input term value is changed into zero, the speed loop integral term value is equal to a current instruction at the time, and therefore increasingof the voltage saturation rate is prevented in a current loop in a current instruction reducing control manner. The manner that the speed loop integral term value is controlled to be reduced is directly adopted, speed PI adjuster control is skipped, the speed loop control time delay is reduced from the control link, accordingly, the reducing response speed of the voltage saturation rate is increased, accordingly, the situation that the voltage saturation rate cannot be rapidly reduced under the situation that the input voltage of an air conditioner is reduced rapidly is effectively avoided, and it is guaranteed that a motor runs in the allowable range.