854results about How to "Improve stripping efficiency" patented technology

The invention relates to a method for preparing graphene compounds and graphene oxide compounds with high efficiency, relating to the method for preparing the graphene compounds and the graphene oxide compounds. The invention solves the problems of easy composition of graphene or graphene oxide per se and many process steps, higher cost and difficult dispersedness for preparing the graphene compounds and the graphene oxide compounds by the traditional method at the same time. The invention adopts a mechanical stripping method to obtain the graphene compounds and the graphene oxide compounds. In the invention, an automatic machine is utilized, solid particles are used for assisting stripping, the contact area and the stripping number of the stripping process are greatly increased, and carbon material powder experiences a lot of stripping processes through the action of shear and impact, thereby obviously improving the stripping efficiency and achieving the purpose of uniform dispersedness to the composites. The method is suitable for industrial mass production of the graphene compounds and the graphene oxide compounds.

The invention provides a method for preparing graphene or graphene oxide by using high-efficiency and low-cost mechanical stripping and relates to a preparation method of the graphene or the graphene oxide, solving the problems that the traditional micro-mechanical stripping method has low efficiency and can not be used for large-batch production. The method comprises the following step of separating carbon materials by utilizing solid particles and a liquid working medium (or gas working medium) and adopting mechanical stripping to obtain the graphene or the graphene oxide, wherein the carbon materials comprise graphite powder, expanded graphite, expandable graphite or graphite powder oxide. By using automatic machinery and using a great deal of solid particles for assisting stripping processes, the invention greatly increases the contact areas and the stripping times of the stripping processes, the carbon materials are subject to a great amount of stripping processes in a short time through the shearing and impacting functions of the solid particles on the carbon materials, and thereby the method obviously improves the stripping efficiency, has low cost and is suitable for the industrial and large-batch production of the graphene or the graphene oxide.

A method for the removal and sequestration of ammonia nitrogen from anaerobic fermentation effluent while producing a higher BTU biogas. The method includes the steps of removing the slurry from the digester, stripping the ammonia from the slurry or portion thereof with a high BTU biogas, blending the stripped ammonia with the digesters biogas to remove the carbon dioxide and precipitate ammonium bicarbonate/carbonate as a solid while producing a high Btu biogas, a portion of which is used to strip the ammonia and CO₂ from the slurry. The process removes ammonia nitrogen from the digester effluent while producing a high Btu biogas and a solid ammonium bicarbonate/carbonate product. Ammonia stripping is accomplished with a recycled stripping gas deficient in CO₂ and ammonia that is capable of removing the CO₂ and ammonia from solution by virtue of the lower partial pressures of CO₂ and ammonia in the stripping unit.

The invention discloses a method for preparing graphene through a liquid-phase stripping method. The preparation method comprises the following steps: S1, performing expanding treatment on a graphite raw material through an expanding method; S2, dispersing the expanded graphite into an aqueous solution containing a surfactant to obtain a mixture, performing ultrasonic treatment on the mixture, centrifuging the mixture, and drying the mixture for later use; S3, adding the dried graphite into an organic solvent, a mixed solution of an organic solvent and a surfactant or a mixed solution of an organic solvent and substances with surface energy similar to that of the graphene, performing ultrasonic treatment and suction filtration, drying, and repeating the step S3 for 1-10 times, thereby obtaining graphene. Compared with the prior art, the method disclosed by the invention can be used for greatly shortening the ultrasonic treatment time, improving the stripping efficiency and obtaining high-quality graphene under low-power ultrasonic treatment.

The invention relates to a method and a system for continuously separating alcohol and utilizing residual heat on the basis of solid state fermentation material, which belongs to the technical field of biomass fuel alcohol. The method mainly comprises the following steps: tight-line pumping, feeding into tower, distributing, stripping alcohol, discharging residue, utilizing residual heat and the like. The system achieves residual heat reutilization through the following two approaches which comprises firstly, looping back residual liquid to outer cylinder clamp ferrules of a closed ring groove rotating disc stripping tower, heating up material and closed tunnel outer clamp ferrules preheating fermentation material, secondly, complementing solid state distillation steam consumption through electrically heating. The alcohol-residue continuous separation technique and closed ring groove rotating disc alcohol stripping tower which are proposed by the invention are suitable for stripping alcohol in solid state fermentation products of sugar or starch such as sweet sorghum stalks and the like, which achieves a goal of automatically feeding and discharging, and continuously separating alcohol and residue, and the method of the invention effectively utilizes reactor residual liquid hidden heat, which complements partial steam gas, and achieves the superiorities of high net energy ratio of solid state fermentation path sweet sorghum alcohol and low environmental load.

The invention discloses a method for preparing graphene micro-sheet dispersion on grade by mechanical stripping; in the method, two different mechanical stripping apparatuses are combined; the method comprises the steps of first, stripping raw graphite and an expanding aid through the effects such as high-speed rotation incurred extrusion, high impact, and weightless expansion to obtain primary finished graphene; mixing the crude product with a dispersant, generating relative motion by high-speed rotation, and generating comprehensive effects in leak slits, such as high-speed shear, friction, centrifugal extrusion, and liquid flow collision to further mix the crude finished graphene and the dispersant so that fine and uniform graphene dispersion is formed. The method can provide improved mechanical stripping efficiency and reduced waste of material, is free of environmental pollution and is suitable for large-scale continuous production.

A wire-stripping machine for a medium-high voltage cable comprises a frame, a speed reducer, a motor, a coupler, a gear, a bearing block, a bearing saddle, pressing wheels, blades, clamping devices and a frame cover plate. Two groups of pressing wheels are arranged on the frame side by side, each group of pressing wheels includes an upper pressing wheel and a lower pressing wheel which are oppositely mounted, a space for penetrating the cable is reserved between each upper pressing wheel and the corresponding lower pressing wheel, the working surface of each upper pressing wheel is semicircular, the working surface of each lower pressing wheel is umbrella-shaped, the blades are clamped in the middles of the working surfaces of the upper pressing wheels in the wire outlet direction, one clamping device is arranged above each group of pressing wheels, one of the lower pressing wheels of the two groups of pressing wheels is mounted on a driving shaft, the other one of the lower pressing wheels of the two groups of pressing wheels is mounted on a driven shaft, the driving shaft is connected with the speed reducer and the motor through the coupler, the gear is mounted on the driving shaft and transmits power to a transmission gear through an intermediate gear, and the transmission gear is mounted on the driven shaft and drives the other lower pressing wheel. By the aid of the wire-stripping machine, a wire insulating layer can be automatically separated from metal, wire-stripping efficiency is improved, labor cost is saved, and loss is furthest reduced.

The invention provides an electrochemical preparation method of a graphene material. The preparation method comprises the following steps: using graphite electrodes as negative and positive electrodes respectively and one or more of 1-butyl-3-methylimidazolium dihydrogenphosphate, N-methyl pyrrolidone hydrosulfate, N-methyl pyrrolidone dihydrogenphosphate and 1-methylimidazolium hydrosulfate as an electrolyte, applying voltage of 3.1-6.0V, and obtaining highly expanded graphite at the negative and positive electrodes respectively; then adding the corresponding electrolyte to the expanded graphite according to (100:1)-(30:1), grinding for 3-6 hours, then transferring the expanded graphite to acetone and dimethyl formamide mixed liquor, carrying out centrifugation at 13000rpm, transferring the precipitate to dimethyl formamide, and carrying out centrifugation at 2000-10000rpm, thus obtaining a supernatant, namely a stable graphene solution, wherein the volume ratio of acetone to dimethyl formamide is (1.1:1)-(3:1). The preparation method has the beneficial effects that the preparation process of the graphene material produced by the preparation method is mild and simple and has a defect cure phenomenon, and the product graphene has few defects and high quality.

The present invention provides one method of raising the efficiency of stripping hydrocarbon converting catalyst and its equipment. According to the present invention, catalyst particle and strippingfluid are made to counterflow through one stripper with at least two layers of stuffing. The stuffing in the stuffing layers is crossed into diamond shaped grid plate parallel to the axis of the stripper. The stripper of the present invention has high efficiency. The present invention is especially suitable for catalytic conversion process of preparing olefin, the smoke impurity content in the regenerating agent is less than 0.05 vol%, and the stripper can be reduced in volume and equipment investment obviously.

The invention provides a high-power double-clad optical fiber cladding light stripper device and a manufacturing method. The light stripper device comprises double-clad optical fibers (116), an optical module (111), a fixing material (113) and water-cooled tubes (117 and 118). The double-clad optical fibers (116) penetrate through the optical module (111) and the fixing material (113). The optical module (111) is arranged in the fixing material (113). The water-cooled tube (117) is installed on the lower portion of the fixing material (113). The optical module (111) is of a three-layer waveguide structure. A heat dissipating material is adopted as the fixing material (113). According to the device, double-clad optical fiber inner cladding is corroded to form an opposite conical structure, and placed into the waveguide structure manufactured with semi-hollow cylinders and semi-solid cylinders made of a transparent material so as to leak light, the light leaked by the inner cladding is leaked uniformly in the length direction of the optical fibers, power density of the light and heat is reduced, and the situation that because light leakage is excessively concentrated, optical gel is burned out can be avoided.

The invention discloses a high-quality and large-size two-dimensional material and a preparation method thereof. The preparation method of the high-quality and large-size two-dimensional material comprises the following steps: S1, after pre-treating lamellar structure material powder, dispersing in chemical drug liquid, so as to obtain a dispersion solution; S2, putting the dispersion solution into emulsifying and dispersing equipment, and carrying out chemical and shearing peeling on the lamellar structure material powder under the action of the chemical drug liquid and emulsification and dispersion; S3, carrying out centrifugal separation and vacuum drying to obtain the high-quality and large-size two-dimensional material. The high-quality and large-size two-dimensional material and thepreparation method thereof, provided by the invention, have the advantages of simplicity and rapidness, high peeling efficiency and capability of realizing continuous scale production.

The extraction and separation method for rare-earth element comprises: with rare-earth solution contained a plurality of rare-earth elements as material, preparing mixed extractant with the non-saponifiable P204 and one or two from P507, P229, P350, TBP, C272, C301, C302 and HEOPPA; in the mixed solution with rare-earth sulfate solution, or rare-earth sulfate and rare-earth chloride solution and rare-earth nitrate solution, extracting and separating rare-earth elements. This invention eliminates saponification to overcome pollution, reduces acidity to improve rare-earth concentration, and decreases the main material consumption more than 30% compared with the technique with NH4HCO3 and P507.

The invention relates to a high-power optical fiber cladding power stripper device. The high-power optical fiber cladding power stripper device comprises a double-cladding optical fiber (1), an optical module (2), an upper cover plate (3), a water cooling base (4) and a water cooling tube (5); the double-cladding optical fiber (1) penetrates through the optical module (2) and the water cooling base (4), the optical module (2) is arranged in the water cooling base (4), the upper portion of the water cooling base (4) is packaged through the upper cover plate (3) made of materials with the good radiating performance, and the water cooling tube (5) is installed at the lower portion of the water cooling base (4). According to the high-power optical fiber cladding power stripper device, an inner cladding of the optical fiber is stripped to be in a step type and is coated with high-refraction-index optical gel with different refraction indexes, light leaked through the inner cladding is leaked in a relatively-even mode along the length of the optical fiber, a three-layer-optical-waveguide optical module structure is constructed, and the light leaked through the inner cladding can be guided out through optical waveguides. In addition, heat is taken away in time through circulation water, and a stripper is prevented from being excessively high in temperature.

The invention relates to a vehicle wire harness girdling and peeling device which comprises a first support plate. Two moving lugs are respectively arranged on the side wall of the first support plate, and a movable screw is arranged between the two moving lugs through a bearing. A moving motor is arranged on the right end of the movable screw through a coupling, and the moving motor is arranged on a motor bracket. A moving block is arranged on the central section of the movable screw through threads, the upper and lower ends of the moving block are symmetrically provided with two moving slide bars, and the two moving slide bars are respectively mounted on two first linear slide rails. The two ends of each first linear slide rail is mounted on the side wall of the first support plate through screws. Four fixing posts are symmetrically welded on the side wall of the moving block, and a mounting plate is welded on the tail end of the four fixing posts. A wire peeling mechanism is arranged on the left side of the side wall of the mounting plate, and a girdling mechanism is arranged on the right side of the side wall of the mounting plate. Integrated processing function of automatically girdling and wire-peeling can be realized during vehicle wire harness processing.

Methods, systems and designs are provided for removing mercury from crudes. Crude oil is heated to a temperature above 100° C. in a stabilization column for a time sufficient to convert all of the forms of mercury in the oil into the elemental mercury form. The elemental mercury is then stripped from the crude oil by flashing, or preferably by gas stripping with a gas injected at the bottom of the column. Either process transfers the elemental mercury from the oil phase into the gas phase. Elemental mercury can then be removed from the gas phase by methods such as condensation, precipitation, or absorption either alone or in combination.

The invention discloses a multifunctional stripping tool for an outer insulating protective layer of a high-voltage cable. The multifunctional stripping tool is used for stripping the outer insulatingprotective layer of the high-voltage cable. The tool comprises a hand wheel assembly, a cutter assembly, a disc body, clamping jaw assemblies, a check ring, a wire disc and a locking handle. The handwheel assembly, the clamping jaw assemblies, the cutter assembly, the check ring and the wire disc are installed on the disc body, and the locking handle is installed on the check ring. The three clamping jaw assemblies have a self-centering function, and the cutter assembly can set the cutting thickness according to the thickness of a cut cable insulation layer. According to the high-voltage cable outer insulation stripping device, the high-voltage cable outer insulation can be stripped more conveniently, time and labor are saved, the stripping efficiency is improved, and hands are preventedfrom being scratched or the insulation layer of a cable core is prevented from being damaged due to insufficient experience of an operator.

The invention provides a preparing method of a single-layer or few-layer molybdenum disulfide nanometer material. According to the method, molybdenum disulfide powder is added into a layering solution to be subjected to a layering reaction, so that mixed liquor is formed; then, an oxidizing agent is added into the mixed liquor to carry out the oxidation intercalation reaction, and a product is filtered and dried to obtain intercalation molybdenum disulfide powder; finally, an explosion agent is added to carry out the explosive reaction, after cooling is carried out to the room temperature, an explosive reaction product is taken out, so that the single-layer or few-layer molybdenum disulfide nanometer material is obtained. The single-layer or few-layer molybdenum disulfide nanometer material prepared through the method is high in stripping efficiency and large in yield; moreover, most stripped products are single-layer molybdenum disulfide with high carrier mobility, can be effectively applied to photoelectricity, a semi-conductor, a secondary battery, a sensor, a storage medium and other devices and has a wide application prospect. The method for preparing the single-layer or few-layer molybdenum disulfide nanometer material is easy to operate, a complex and tedious preparing method is not needed, and the method is suitable for industrialized production.

The invention discloses a coconut palm fiber peeling machine. The coconut palm fiber peeling machine comprises a screw rod motor, a beam, a lifting platform, a stand pillar, a screw rod, press buttons, a bottom seat, a rubber seat, a turnover knife component and a controller, wherein the turnover knife component comprises a knife disk motor, a connection rod, a knife disk, a turnover knife, a rotator and a slide block. When a person uses the coconut palm fiber peeling machine to peel palm fibers of a coconut, the person only needs to right the coconut and place the coconut into the rubber seat, and simultaneously presses down the press buttons on two sides of the bottom seat, the palm fibers on the outer layer of the coconut can be peeled through united action of the lifting platform and the turnover knife component under control of the controller, and simultaneously the interior of the coconut can not be injured, and therefore the coconut palm fiber peeling machine is convenient to operate and greatly improves palm fiber peeling efficiency.

The invention relates to a method for large-scale preparation of graphene and two-dimensional boron nitride crystal materials. The method is characterized in that in the presence of NH3BH3 as a ball milling assistant, a solid mixture having a mass ratio of an inorganic layered material to NH3BH3 of 1: 0.5-5 is subjected to ball milling treatment by a mechanical ball milling technology so that high-efficiency peeling on the inorganic layered material such as graphite and hexagonal boron nitride is realized; and the products are washed and filtered for NH3BH3 removal and the filtration products are dried so that the single-layer or multiple-layer graphene and two-dimensional boron nitride crystal materials are obtained. The graphene and two-dimensional boron nitride crystal materials have high purity and complete structures. The method has the advantages of easy acquisition of raw materials, operation simpleness, safety and low cost and is suitable for large-scale preparation of the graphene and two-dimensional boron nitride crystal materials.