761 results about "Phase splitting" patented technology

The invention discloses a process for supercritical preparation of biologic diesel oil by using animal or plant oil, waste edible oil, oiling crop seeds as raw material through the steps of filtering, dewatering, esterification, ester interchange, filtering, steaming methanol and phase-splitting.

A light-scattering sheet having a phase separation structure comprised of a plurality of solid components varying in refractive index is used to construct a liquid crystal display device. In a first embodiment, the light-scattering sheet is disposed in a defined position within a reflecting LCD device. Thus, in a reflecting LCD device comprising a liquid crystal cell constituted of a transparent front electrode plate having a substrate carrying a transparent conductive layer, a back electrode plate having a substrate carrying a conductive layer and a liquid crystal and, as disposed forwardly of the liquid crystal cell, a polarizer, the light-scattering sheet is interposed (i) between the polarizer and the front electrode plate or (ii) between the back electrode plate and a reflector disposed behind the back electrode plate. Alternatively, (iii) the substrate sheet may be constituted of the light-scattering sheet. In a second embodiment, a light-scattering sheet having an isotropic bicontinuous phase structure comprised of a plurality of polymers varying in refractive index is used.

The invention discloses a method for non-saponification extraction and separation of light rare earth elements. After a compound extraction agent consisting of acid phosphorus type extraction agent, alkaline amine type extraction agent and solvent oil is mixed with phosphate solvent or organic alcohol solvent at 30-70 DEG C, chlorinated light rare earth liquid is extracted and separated; and the water washing and the hydrochloric acid reverse extraction are performed to finally realize the separation of La, Ce, Pr and Nd; and a mixed organic phase after the reverse extraction is returned to an extraction tank for recycling. The method pretreats the mixed organic phase consisting of the compound extraction agent and the solvent, so that such defects as high viscosity, weak mobility, easy emulsification and long phase splitting time are overcome; the method has no need to saponify the acid phosphorus type extraction agent, so that no alkali liquor consumption and no waste water emission in the extraction process are realized, but the separation capacity of a saponification extracting agent system is achieved, and the extraction grade is reduced compared with that needed by the saponification extracting agent system; and the method is a rare earth element separation process with economy and high efficiency.

The invention relates to a distribution network ground fault arc suppression method based on three-phase cascade H bridge converters. The three-phase cascade H bridge converters are adopted to replace arc suppression coils and mounted between phase lines and the ground, and power is supplied to capacitors on the direct current side of the converters by using phase voltages, so that boosting transformers and grounding transformers are saved, and the problem of source taking difficulty on the direct current side of the converters is solved. The converters inject current to a distribution network in a phase splitting mode to compensate the total current of a ground fault to be zero or to inhibit the phase voltage of the fault to be zero, so that the arc is automatically extinguished; and the reference compensation current is calculated by using real-time measured zero sequence voltage, so that the fault phase identification link is saved. The operation is simplified by using the voltage arc suppression method of controlling the zero sequence voltage to adjust the injected compensation current. In view of the influence of circuit parameters and load current on the arc suppression effect and the deduced relation between the ground fault residual current after the voltage arc suppression method is applied and the zero sequence voltage after the fault, an adaptive arc suppression method is put forward by using the zero sequence voltage as a voltage and current arc suppression method.

Compact liquid or gel-form laundry detergent compositions processes for manufacturing such compositions, wherein the compositions comprise at least a stabilization system against phase splitting having an alkanolamine and a coupling polymer component and preferably a stabilization system against phase splitting having an alkanolamine, a coupling polymer and a crystalline structurant component.

A method and system for treatment of flow-back and produced water from a hydrocarbon well in which fracturing operations are carried out using a phase separation and creating of positive charge in the water.

This invention relates to reclosing method for power transmission line. For joint parallel double circuit type: each circuit being equiped with individual protector, main protection being phase-splitting current differential protection or phase-command longitudinal protection; for various type single circuit fault or overline fault withni a zone, tripping fault being detected, determinnig no serious permanent fault, sequentially reclosing the tripping phases. For double-circuit fault, there must be two different type circuit being of no fault for reclosing, if not, two circuits must be tripped-off. This invention method increases the reclosing rate, together with minimizing the shock to the system after reclosing permanent fault.

The invention provides a high-precision and high-integrality time-digital converter based on an FPGA (Field Programmable Gate Array), and an implementation method. The time-digital converter comprises a fine time measuring unit, wherein the fine time measuring unit consists of a time alternate sampling unit, a multi-stage sampling data buffering unit and a snapshot and encoding unit. The invention aims to provide the high-integrality precision time-digital converter based on an FPGA. Innovation points lie in that: a fine time measuring part adopts a technology of a latch snapshot and rapid encoding combined architecture based on phase splitting clock alternate sampling, multi-stage sampling data caching and cached multi-stage sampling data. The high-precision and high-integrality time-digital converter has the characteristics of simple structure, design flexibility, high portability, short measuring dead time, large dynamic range, low cost, flexible interface and the like, and can be applied to the fields of aerospace, space research, communication, biomedicine, earth dynamics, relativity research and the like.

The invention provides a time interval measuring instrument based on FPGA. The time interval measuring instrument is designed into a virtual instrument by taking a PXI interface as a platform; a PXI system can be inserted with a plurality of PXI cards; each card carries out time interval measurement to signals of one initial channel and a plurality of stopping channels; simultaneously the pulse width of stop pulse is measured. The time interval measuring instrument utilizes phase-locked loop frequency doubling and time phase-splitting technology so that the measuring resolution can be up to 1ns and the measuring range can be up to 20ns to 200ms. As the virtual instrument structure is adopted, a PXI platform and a computer are combined to form an automatic measuring system; and the time interval measuring instrument has the advantages of simple structure, convenient use, high reliability, strong expandability and high measuring efficiency.

The invention discloses an automatic passage method through phase splitting for an AC-DC-AC electric locomotive which comprises the following steps: before the electric locomotive runs into a neutral section, a traction control system controls a traction motor to work in a regenerative braking mode and controls an inverter to stabilize intermediate DC voltage; a pulse rectifier works in an inversion state; an alternating voltage equal to a traction voltage is generated on the primary side of a traction transformer, thereby making the primary side of the traction transformer obtain zero current from a power supply arm; after the electric locomotive runs into the neutral section, the intermediate DC voltage still maintains stability; the AC phase generated by the inversion of the pulse rectifier in the inversion mode changes gradually so as to make the voltage of the primary side of the traction transformer change to become equal to the traction voltage of a next power supply arm; and then the electric locomotive enters the next power supply arm and runs normally. The method enables the automatic passage through phase splitting; in addition during the phase splitting, a main circuit breaker does not need to be turned on and off without arc discharge, interception overvoltage and closing surge overcurrent, and an auxiliary system is not deenergized; and the passage through phase splitting has short time, low traction loss and small speed drop.

The invention belongs to the technical field of bioengineering, and relates to a method for extracting and salting organic acids out of fermentation liquor. The method is characterized in that: soluble inorganic or organic salt solids or concentrated solution thereof and an extracting agent are added into the organic acid fermentation liquor, stirred for uniform mixing, and stood at room temperature for phase splitting; when two phases are formed by the salting-out and extraction, an upper phase is a solvent phase rich in the organic acids, while a lower phase is a salt phase rich in other components; if the extraction operation is directly performed without pretreating the fermentation liquor, a solid phase layer rich in bacteria and proteins is formed between the two phases; when three phases are formed, the upper phase is the solvent phase, a middle phase is the phase rich in the organic acids and the lower phase is the salt phase rich in the other components; therefore, the aim of extracting and separating the organic acids is fulfilled. The method solves the problems of difficulties in product separation, high cost and the like in the conventional process for separating the organic acids by a fermentation method, is simple, ensures separation time, low cost and high recovery rate, and is an organic acid separation method with industrial application prospect.

The invention discloses a polyvinylidene fluoride super-hydrophilic composite porous membrane and a preparation method of a silver-loaded super-hydrophilic membrane thereof. A blending method and a phase to membrane conversion method are adopted, a micro-nano-level rough surface is formed while the phase conversion is performed between a phase-splitting material and a main material, then the membrane material is soaked in a solution containing dopa compounds to perform surface modification, the surface is modified through the adoption of features of oxidation, auto-agglutination, crosslinking and adhesion of the dopa compounds to prepare the super-hydrophilic membrane, the weak reducibility of polydopa or polydopamine is further used for reducing silver ions, and finally the silver-loaded super-hydrophilic membrane surface is prepared through the reaction of the dopa compounds. The super-hydrophilic surface formed by the method and the silver-loaded super-hydrophilic surface thereof have durable super-hydrophilic performance and antibacterial property.

The invention relates to a method for extracting chlorogenic acid, which belongs to the technical field of pharmaceutical chemicals. The method combines macroporous resin enrichment, ethyl acetate extraction and a mixed solvent split-phase method to achieve multi-step gradient purification of the chlorogenic acid so as to obtain a chlorogenic acid product with high purity. The method comprises the processes of water extraction, column passing, extraction, phase splitting and recrystallization. The macroporous resin adopted by the column passing process is 306 type or XAD series resin; and the split-phase agent adopted by the split-phase method is petroleum ether, chloroform or the mixture of the petroleum ether and the chloroform. The method is applicable to the process of extracting and preparing the chlorogenic acid from honeysuckles, cortex eucommiae leaves and cortex eucommiae barks.

The invention provides a separation and recovery method for leaching solutions of waste battery material containing nickel, cobalt and manganese. The method comprises the steps of adopting trialkyl hydroxamic acid for extracting solutions to be treated for obtaining organic phases 1 and aqueous phases 1, wherein the nickel and the cobalt are extracted into the organic phases 1, and manganese ions and lithium ions are left in the aqueous phases 1; adopting sulfuric acid or hydrochloric acid for carrying out reverse extraction on the organic phases 1 for obtaining organic phases 2 and aqueous phases 2, wherein the nickel and the cobalt are reversely extracted into the aqueous phases 2; adopting a second extraction agent for extracting the aqueous phases 2 for obtaining organic phases 4 and aqueous phases 4, wherein the cobalt is extracted into the organic phases 4 and the nickel is left in the aqueous phases 4 for forming nickel solutions; adopting the sulfuric acid or hydrochloric acid for carrying out reverse extraction on the organic phases 4 for obtaining cobalt solutions; adopting a third extraction agent for extracting the aqueous phases 1 for obtaining organic phases 5 and aqueous phases 5 after phase splitting, wherein the manganese is extracted into the organic phases 5 and the lithium ions are left in the aqueous phases 5; adopting the sulfuric acid or hydrochloric acid for carrying out reverse extraction on the organic phases 5 for obtaining manganese solutions.

The invention relates to a method for preparing phase change energy storage material microemulsion, comprising the steps: first, 10 parts by weight of organic phase change energy storage material can be prepared; 1-4 parts by weight of surface active agent, 1-3 parts by weight of cosurfactant, 0.3-1.5 parts by weight of inorganic salt and 10-100 parts by weight of de-ionized water or distilled water are added into the organic phase change energy storage material; after that, the mixed solution is evenly stirred and mixed at a certain temperature and then stands still; finally, the microemulsion is obtained until bubbles are completely removed; wherein, the surface active agent is compound of surface active agent A and surface active agent B, the HLB values of which are respectively 1-10 and 11-20; the weight ratio between the surface active agent A and the surface active agent B is 1:1.5-4.5, and the HLB value is 8-18 after being compounded. The obtained microemulsion is a stable system of thermodynamics, has transparent appearance, and does not have the phenomenon of phase splitting and emulsion breaking caused by a plurality of times of phase transition process due to the actions such as a plurality of times of freeze thawing, centrifugal separation and the like, thereby fundamentally overcoming the defect of poor stability of conventional emulsion and being long in service life.

The invention discloses a cascaded multi-level-based ground overvoltage phase splitting device. The cascaded multi-level-based ground overvoltage phase splitting device is characterized in that the position of a train is determined by the aid of locomotive position sensors CG1, CG2, CG3 and CG4 which are arranged on a rail, a ground overvoltage phase splitting device which is connected to two adjacent phases outputs single-phase alternating-current voltages under the control, and amplitude values, frequencies and phases of the voltages are identical to an amplitude value, a frequency and a phase of a voltage of an A-phase bridge arm when the train is positioned on an A-phase bridge arm side; when an electric locomotive enters a neutral section, output voltage which is identical to the A-phase voltages the amplitude values, the frequencies and the phases of the A-phase voltages is converted to be identical to the B-phase amplitude values, frequencies and phases of the B-phase voltages. The cascaded multi-level-based ground overvoltage phase splitting device has the advantages that flexible passing voltage phase splitting can be implemented on the electric locomotive (or a motor train unit) by the aid of the cascaded multi-level-based ground overvoltage phase splitting device, impact on an overhead line system and the electric locomotive (or the motor train unit) can be prevented, and requirements on switch devices can be lowered; uninterrupted power supply passing voltage phase splitting can be implemented on the train; the cascaded multi-level-based ground overvoltage phase splitting device has an important significance on implementing through type power supply on the overhead line system with electric phase splitting.

The present invention relates to a method for producing a phase-separated layer useful as a flux pinning substrate for a superconducting film, wherein the method includes subjecting at least a first and a second target material to a sputtering deposition technique in order that a phase-separated layer is deposited epitaxially on a primary substrate containing an ordered surface layer. The invention is also directed to a method for producing a superconducting tape containing pinning defects therein by depositing a superconducting film on a phase-separated layer produced by the method described above.

The invention discloses a method for preparing biodiesel through catalysis of sulfonic acid-type ionic liquid. The method comprises the following steps: according to certain proportion, a lipin material, methanol and ionic liquid are added into a high-pressure reaction kettle, are heated for reaction; after reaction is finished, the mixture is kept stand and is delaminated; a product is separated out; a small amount of methanol is distilled and removed at normal atmosphere; the method adopts sulfonic acid-type ketopyrrolidine or protoporphyrin ionic liquid with strong acidity as a catalyst for interesterification reaction; and the catalyst catalyzes the lipin and methanol to prepare the biodiesel. The method has the advantages that the used sulfonic acid-type ionic liquid has strong acidity, high catalytic activity, good stability and low corrosion to equipment; after the reaction is finished, the sulfonic acid-type ionic liquid and the product can automatically carry out phase splitting, has a simple separation process, and is environment-friendly in production process.

Methods and apparatus are provided for efficiently amplifying or converting a signal. An input signal is decomposed into a plurality of two state signals, each two state signal having a respective on level and off level. This may involve sigma-delta modulation and phase splitting. For amplifier applications, each of the two state signals is amplified with a respective switching power amplifier to produce a respective amplified signal. The amplified signals are combined to produce an amplified version of the input signal. Signals may be adjusted for impairments associated with a subsequent processing operation such as the combining.

The invention discloses a control method based on a cascade multilevel ground electrical phase-splitting device. According to the method, an inverter part of the cascade multilevel ground electrical phase-splitting device is controlled; bumpless transfer between two adjacent bridge arm voltages of neutral section voltage is realized by adjusting the amplitude and the frequency of the inverter when a train is positioned at the neutral section; in addition, an electric locomotive (or a motor train unit) flexibly passes electricity phase splitting, no impact on a touch net and the electric locomotive (or the motor train unit) is found and the requirement on a switch device can be reduced. The train can realize uninterruptible power supply and passes electricity phase splitting. The significance of the control method is that the through type power supply can be realized on the touch net with electricity phase splitting based on hardware.

The invention discloses a sample pretreatment method for detection of organochlorine pesticide residue in food and is characterized by comprising the following steps: water is added to a food sample, sample solution is swirled, and then inorganic salt and hydrophilic organic solvent are added to the sample solution, the sample solution is swirled and shaken uniformly, the sample solution undergoes phase splitting after centrifugation at room temperature, the upper-phase liquid is purified through dispersion solid-phase extraction method, the extraction temperature is 20-30 DEG C, and finally the upper-phase liquid is detected by gas chromatography; and the mass percent of the inorganic salt accounts for 5%-35% of the total mass of the system, the mass percent of the hydrophilic organic solvent accounts for 10%-50% of the total mass of the system, and water is of the residual amount, and the total mass of the system is the mass sum of water contained in the sample, the added water, the inorganic salt and the hydrophilic organic solvent. According to the sample pretreatment method, a dual-water-phase system consisting of the hydrophilic organic solvent, the organic salt and water is utilized, the partition coefficient is increased by means of changing the types and concentrations of the organic solvent and the inorganic salt, and the organochlorine pesticide residue in the sample can be directly extracted at room temperature.

The invention relates to the method for fast preparing the nano catalyst used for the fuel cell and the sensor. The active constituent (monocomponent or polycomponent) is deioxidized or oxidized uniformly (no phase splitting) only one time, adhered to the surface of the carrier by using the microwave adjust and control technique. The chemical reactions are induced and controlled by the microwave. The drying procedure and unartificial smashing procedure are completed at the same time. The invention possesses the features of the small granule of the catalyst, even distributed, high electrochemical activity. The catalyst with the capacity of the active matter more than 40% can be prepared once by the single kettle.

The invention relates to a process for extracting nickel and cobalt from laterite by ore pulp extraction technology, which comprises the following steps of: crushing and grinding the laterite; putting into a high-pressure kettle, and carrying out high-pressure acid leaching to remove iron; pouring into a mixing settling extraction tank with a stirring and settling tank and a baffle plate, carrying out 5-12 grade of extraction, back extraction and phase splitting and washing to respectively obtain mixed solution of nickel and cobalt, waste liquid containing impurities and the ore pulp; extracting and separating nickel from cobalt to respectively obtain pure nickel solution and pure cobalt solution; and precipitating and calcining to obtain nickel oxide and cobalt oxide products. The solution with high concentration is obtained by extraction, the process is shortened, the liquid-solid separation load and a number of washing and filtering processes are reduced, so that energy consumption of production and production cost are reduced and the economic benefit is improved. An extracting agent can be used repeatedly after being saponified and has relatively low comprehensive consumption. The speed of the extraction process is high and is commonly less than 10 minutes. The extraction efficiency is high. The extracted ore pulp can be neutralized uniformly so as to reduce the treatment cost of tailings. The process is simple; the recovery rate is higher; and the nickel and cobalt recovery rates are both more than or equal to 90 percent and the process is easy to popularize.

The invention relates to a method for extracting lithium from salt lake brine by an extraction method. The method is suitable for a production process that lithium carbonate and lithium chloride are prepared from high magnesium-lithium ratio salt lake brine and concentrated old brine which contains lithium of salt pan. Co-extraction agent FeCl3, extraction agent and diluent are adopted to carry out lithium extraction, wherein the extraction agent is mixture of neutral phosphorus oxide compound A and phase modifier B, the phase modifier B is organic compound which can generate protonation reaction with the neutral phosphorus oxide compound A in an extraction reaction process, an extraction complex composition obtained after the extraction agent is used for lithium extraction is xLiFeCl4.yHCl.aA.bB, and the extraction complex can be easily dissolved in diluent; an extraction system has good phase splitting performance and reverse extraction and regeneration performance, and the lithium extraction technology of the extraction method is further optimized. The method has a low requirement on equipment, the adopted organic compound is cheap and can be easily obtained, and therefore, the method is suitable for industrial application.

The invention discloses a medium-voltage flexible direct current tractive power supply system and a controlling method thereof. The tractive power supply system comprises more than one traction powersubstation. The traction power substation comprises a three-phase step-down transformer, a three-phase electric reactor, a voltage source current converter and a first direct current bus which are connected successively. The input end of the three-phase step-down transformer is connected to a three-phase power grid. The positive pole and the negative pole of the output end of the voltage source current converter are connected to the positive pole and the negative pole of the first direct current bus. The positive pole and the negative pole of the first direct current bus are connected to a contact system and a steel rail. The beneficial effects of the medium-voltage flexible direct current tractive power supply system are that the electric energy quality of the system can be greatly improved, the electric phase splitting link is completely eliminated, and the through power supply of the whole traction network is realized. In addition, the system is capable of increasing the power supply distance of the single traction substation, and realizing the renewable energy sources along the railway and the effective utilization of the locomotive regenerative braking energy.

The invention discloses a preparation method of a GO (graphene oxide)-SiO2 hybrid particle composite fiber super / microfiltration membrane. The method comprises the following steps: 1) preparing GO-SiO2 hybrid particles; 2) preparing a high-molecular polymer, an additive, the GO-SiO2 hybrid particles, a solubilizer and an organic solvent into multiple homogenized film casting solutions in different proportions; 3) removing stains on the surface of a braided hose; 4) uniformly coating the film casting solution onto the outer wall of the braided hose; and 5) sending the coated braided hose into a gel bath, and carrying out phase splitting, thereby finally obtaining the modified hollow fiber composite super / microfiltration membrane. The GO-SiO2 hybrid particles with favorable dispersity are added to effectively enhance the solubility of the nanoparticles in the film casting solution under the synergic action of the solubilizer, thereby enhancing the tensile strength of the hollow fiber composite membrane wire and obtaining larger membrane area by using a small amount of the film casting solution. The composite membrane has high anti-pollution and antibacterial capacities, and maintains higher flux and a certain interception rate.

The invention discloses a power control method based on a cascaded multilevel ground overvoltage phase splitting system. The converter part of the cascaded multilevel ground overvoltage phase splitting system is controlled, and by controlling the amplitude and phase position of the output voltage of the converter, the traction power required by a train can be controlled and switched between a traction network power supply arm and a neutral section when a pantograph of the train makes contact with the traction network power supply arm and the neutral section at the same time, so that no impact current is generated when the pantograph is separated from or combined with the contact network power supply arm or the neutral section and the adverse effect of a transient process on a car network is avoided. By the adoption of the method, train power switching is free of impact when an electric locomotive or motor train unit passes through the cascaded multilevel ground overvoltage phase splitting system, so that arc discharging, cut-off overvoltage and other problems are avoided, and overvoltage phase splitting of the train can be achieved flexibly.

The invention relates to a preparation method of speckled glaze.According to the preparation method, prepared ground glaze and cover glaze are adopted, ground glaze components start to be subjected to phase splitting at the melting temperature of 1150 DEG C-1180 DEG C in an oxidizing atmosphere by adopting a specific firing system to form a calcium-enriched and iron-poor phase and an iron-enriched and calcium-less phase which contain the different ingredients, then the ground gaze and the upper-layer cover glaze are penetrated each other at the melting temperature of 1250 DEG C-1280 DEG C, and after cooling is performed, the eel back speckled glaze is formed.According to the speckled glaze, the surface is smooth, the background ground glaze and speckles both have the vitreous luster, the lead dissolving-out amount and the cadmium dissolving-out amount in the product are both not detected out, and the speckled glaze can be used for tea tasting tea sets and daily tableware decorates.

The invention disclose a sludge phase-splitting slaking method of waste water disposing plant involving to a sludge disposing and resource utilization technology, which comprises the following steps: proceeding aerate hydrolytic slaking reaction 6d with dissolved oxygen at 1.5-2 mg / L, pH value at 5.5-6.0 and temperature at 30-35 deg.c; getting hydrolytic slaking product; entering into centrifugal machine; proceeding solid-liquid separation; getting hydrolysate and mud cake; entering hydrolysate into filling-type methanation reacting bed with temperature at 32-38 deg.c and cycling speed at 0.005-0.02m / s; proceeding methanation slaking with waterpower residence time at 3d; getting marsh gas and slaking yielding water; leading marsh gas to gas-fired boiler; producing vapor; refluxing slaking yielding water to distribution well of sewage disposal plant; mixing mud cake with dry sludge till moisture percentage at 50-60%; heating and drying with vapor producing by boiler in dehumidifier; getting dry sludge with moisture percentage at 32-38%; using to land.

specifically a process for extracting glycyrrhizic acid from licorice roots, wherein the glycyrrhizic acid is extracted from the licorice root rapidly and effectively by using the method of microwave auxiliary extraction, and then organic extracting agent, e.g. tributyl phosphate, trialkyl phosphine oxide, isooctanol, n-hexyl alcohol, isopentyl alcohol are used for solvent extraction, after stewing or centrifugal phase-splitting, the glycyrrhizic acid will be enriched in organic phase, by using water as solution, and regulating the pH of the miscible liquids to 6.0-12.0, the inverse extraction for glycyrrhizic acid can be carried out, thus obtaining the aqueous solution of the enriched glycyrrhizic acid, and the refined glycyrrhizic acid is obtained through decoloration, acidification, stewing, centrifugal deposition and drying.