330results about How to "Efficient separation" patented technology

The present invention provides commercially viable, large-scale methods for concentrating microalgae with an average diameter of about 20 μm or less. The methods find use in concentrating microalgae with an average diameter of about 5 μm or less, for example, Nannochloropsis.

The invention belongs to a technical field of chemical fiber, in particular to a preparation method of cellulose pulps of reed or straw and the like. The method comprises the following steps of: firstly, carrying out steam explosion treatment on reed or straw raw materials in steam explosion treatment equipment, secondly, washing raw materials of reed or straw and the like after steam explosion treatment with water, and soaking the washed materials in an organic solvent for treatment to finish cellulose pulping technology. The technology utilized by the invention has obvious advantages of shortening the technological process, saving energy, protecting the environment (the organic solvent can be recycled by distilling to reutilize), and being beneficial to clean production and environmental protection.

The invention discloses a method for separating iron, vanadium and titanium from schreyerite, which comprises the following steps: mixing schreyerite, sodium sulfate, a reducer and an adhesive, pressing into mineral coal pellets, drying the mineral coal pellets, filling into a rotary hearth furnace, and roasting at 1000-1300 DEG C for 20-60 minutes to obtain metalized pellets, wherein a neutral or micro-oxygenation atmosphere is in the rotary hearth furnace; crushing the metalized pellets, leaching at 70-90 DEG C while controlling the pH value at 3-5, and filtering the leach solution to obtain a vanadium solution; slurrying the leaching leftovers by ball milling while controlling the particle size at 0.045mm, and carrying out primary magnetic separation under the magnetic field intensity of 0.3-0.5T to obtain a nonmagnetic material which is a first titanium-rich material; carrying out secondary magnetic separation on the magnetic material under the magnetic field intensity of 0.02-0.04T to obtain a magnetic material which is a first iron-rich material; and slurrying the nonmagnetic material from the secondary magnetic separation by ball milling, and reseparating to obtain a second iron-rich material and a second titanium-rich material.

The present invention discloses structures and method of fabricating cladded quantum dot gate nonvolatile memory and three-state field-effect transistor devices that can be scaled down to sub-22 nm dimensions and embedded along side with other functional circuits. Another innovation is the design of transport channel, which comprises an asymmetric coupled well structure comprising two or more wells. This structure enhances the retention time in nonvolatile memory by increasing the effective separation between channel charge and the quantum dots located in the floating gate. The cladded quantum dot gate FETs can be designed in Si, InGaAs—InP and other material systems. The 3-state FET devices form the basis of novel digital circuits using multiple valued logic and advanced analog circuits. One or more layers of SiO_x-cladded Si quantum dots can also be used as high-k dielectric layer forming the gate insulator over the transport channel of a sub-22 nm FET.

The invention discloses a testing apparatus for internal corrosion of circulating multiphase flow undulating pipeline, belonging to the technical field of multiphase flow internal corrosion test of oil and gas pipelines. The apparatus is mainly composed of a gaseous phase closed circulating system, a liquid phase closed circulating system, a gaseous phase and liquid phase separation system, a temperature control system, a multiphase flow undulating pipeline system, an on-line corrosion testing system and a plurality of control valves; the gaseous phase and liquid phase separation system realizes effective separation of the gaseous phase and the liquid phase through a two-stage gaseous phase and liquid phase separation apparatus; a high-pressure gasholder, a high-pressure gas cylinder and various valves in the gaseous phase closed circulating system regulate the gaseous phase pressure and the rate of flow to be steady; the multiphase flow undulating pipeline is composed of two kinds of pipelines which have different pipe diameters, pipe materials or pipe internal coatings, and the pipeline can be set to have different inclined angles; and three detection methods based on hangers, electrochemistry and inductance are set in the testing system. The testing apparatus is used for implementing the circulating corrosion test on a dry gas, wet gas and oil-gas-water three-phase mixed transportation undulating pipeline under different conditions, wherein the gas in the pipeline contains corrosive gas, such as CO2, H2S and the like; and simultaneously, the testing apparatus can perform corrosion prevention evaluation on corrosion inhibitors and pipeline internal coatings.

A device and process for separating liquid and gas phases in a flowstream containing a liquefied gas or supercritical fluid under pressure mixed with a liquid. A splitter vessel separates the liquid from gas phases and transfers liquid to a collection container while conducting the gas phase out of the splitter. Separation of liquid phase out of the flowstream is provided without additional pressure schemes or solvent extractions imposed on the stream.

The invention discloses a recycling processing technology for a waste circuit board and relates to the recycling processing technology for waste resources. The recycling processing technology comprises the following steps of: cutting wastes; manually separating; removing gold; removing tin; primarily crushing; magnetically separating; secondarily crushing; separating by vibrating; separating through airflow; crushing pellets; separating according to specific gravity; compounding plastic and wood; and lastly, respectively recycling the matters, such as gold, silver, aluminum, iron, tin, copper, lead, plastic and resins, thereby reusing the matters. The recycling processing technology has the advantages that: (1) the flow line production operation is realized, the degree of automation is high and the yield is high; (2) compared with the traditional processing method, the recycling processing technology effectively reduces the emission of toxic gas and water and improves the environmental protection index; and (3) various matters in the waste circuit board are more effectively separated, the noble metal is recycled, the recycling of resources is realized, the mineral resource exploitation and wood felling are indirectly reduced, and the energy consumption and pollution during the processes of mineral resource exploitation and metallurgy processing are reduced.

The invention provides a rotating machine fault diagnosis method based on Fast ICA-spectrum kurtosis-envelope spectrum analysis. The method includes the steps that (1), an acceleration sensor is used for obtaining vibration acceleration test signals of a rotating machine; (2), the test signals are separated in a decoupling mode by the adoption of a Fast ICA method with negentropy maximized; (3), the spectrum kurtosis of the separated signals is calculated, and the separated signals capable of representing fault information best are screened out; (4), Hilbert envelope spectrum analysis is performed on the selected separated signals; (5), the frequency corresponding to the peak value of an envelope spectrum is compared with the fault character frequency of a bearing, so that a concrete fault is diagnosed. The effectiveness of the method is verified well by the inner ring fault diagnosis of a rolling bearing of the rotating machine, the fault information is obviously increased, the precision of the fault diagnosis is greatly improved, the fault diagnosis method is easy to achieve and good in real-time performance, and it is illustrated that the rotating machine fault diagnosis method has good application prospects.

The invention discloses a super hydrophobic-supper lipophilic polymer porous film, preparation method and application thereof. The surface of the polymer porous film is a micro nanometer structure, a nanometer level and/or micron/submicron level pore channel is arranged in the polymer porous film, the thickness of the film is controllable in the range of tens of nanometers to millimeters and the film is used for oil/water (including emulsified oil) separation. The preparation method comprises the following steps: adding a micromolecular additive into a macromolecular solution according to a certain proportion, spreading the obtained mixture solution on the surface of a substrate, and finally forming a film by a wet-method phase inversion technology. The oil immersion speed of the polymer porous film is quick and the film is not easily polluted, and the film has relatively high separation efficiency and flux for the oil-water mixture and the oil-water emulsion (or emulsified oil), and the film has other features such as convenient preparation technology, easy operation and low production cost. The film can be widely applied in various fields such as large-scale separation and purification of the industrial oil water (emulsified oil water) and large-scale filter and separation of organic liquid/water.

Disclosed is a process for removing DME from a stream containing C4 olefins. The process includes providing a first stream comprising C4 olefins, C5+ hydrocarbons, DME, and methanol. The first stream is separated into a second stream comprising the C4 olefins and the DME and a third stream comprising the C5+ hydrocarbons and the methanol. The second stream is directed to a DME absorption unit, wherein the second stream contacts water under conditions effective to separate the C4 olefins from the DME. Also disclosed is a process including contacting the first stream with water in a methanol removal unit under conditions effective to separate remove the methanol therefrom; distilling the methanol-depleted stream to remove C5+ hydrocarbon components, and contacting the stream with water in a DME removal unit under conditions effective to form an overhead stream comprising the C4 olefins and a bottoms stream comprising the DME.

Provided is an optical modulator capable of efficiently separating radiation light and propagation light from each other or removing the radiation light in the optical modulator to suppress loss of the optical modulator and deterioration of an extinction ratio. In the optical modulator including a thin plate made of a material having an electrooptic effect and having a thickness of 20 μm or less; an optical waveguide formed in a top surface or a bottom surface of the thin plate; and a modulation electrode which is formed in the top surface of the thin plate to modulate light which propagates in the optical waveguide, the optical waveguide has an optical junction portion in which a plurality of optical waveguide portions are joined together and a shielding means for shielding a portion of radiation light radiated from the optical junction portion. The shielding means is a concave portion or a thorough-hole formed in the thin plate, a shortest distance from the waveguide to the shielding means is 5 to 10 μm, and the length of the shielding means in a direction perpendicular to the waveguide is at least 0.5 times the diameter of a fiber.

A process for producing a purified carboxylic acid having “n+1” carbon atoms comprises feeding a carboxylic acid stream containing a carboxylic acid having “n+1” carbon atoms, a hydrogen halide, a lower boiling point (bp) component, a higher bp component, and others to a first distillation column; separating a lower bp fraction containing part of the lower bp component and a higher bp fraction containing part of the higher bp component in the first column; withdrawing a side stream containing at least the carboxylic acid by side cut from the first column; feeding the side stream to a second distillation column; separating a lower bp fraction containing part of the lower bp component and a higher bp fraction containing part of the higher bp component in the second column; and withdrawing a side stream containing the carboxylic acid by side cut from the second column to recover a purified carboxylic acid; and the process further comprises feeding at least one first component (A) selected from the group consisting of an alcohol, corresponding to the carboxylic acid, having “n” carbon atom(s), and an ester of the alcohol with the carboxylic acid to the first column, and if necessary water. Such a process ensures reduction of the concentration of the hydrogen halide in the purified carboxylic acid.

The invention relates to a method for simultaneously extracting and separating chlorogenic acid, solanesol, alkaloid and rutin in tobacco. The method comprises the following steps: 1, extracting simultaneously, namely, crushing a tobacco raw material, extracting by using 80% ethanol once under the conditions that the temperature is 40-50 DEG C, the ultrasonic frequency is 45KHz and the ratio of material to liquid is 10:1, and performing suction filtration or centrifugation, respectively extracting the residue by using 80% and 95% ethanol once; combining the extract solutions of three times, thereby obtaining crude extract of chlorogenic acid, solanesol, alkaloid and rutin in tobacco, wherein the extraction rates of chlorogenic acid, solanesol, alkaloid and rutin in tobacco are 100%; and 2, separating, namely, separating solanesol, separating chlorogenic acid and rutin, and separating alkaloid. By adopting the method, simultaneous and efficient extraction on chlorogenic acid, solanesol, alkaloid and rutin in tobacco is achieved, the extraction rates are all 100%, the four components are effectively separated through simple steps, the utilization rate of the tobacco resource is improved, at the same time the operation is simple, the organic solvent is saved, and the energy consumption is reduced.

The invention discloses a receiving method of spread spectrum signals and belongs to the technical field of spread spectrum communication. The method comprises the following steps of: respectively receiving the spread spectrum signals by using at least two antennae; carrying out blind source separation by using at least two received signals as observation signals; and identifying separation signals which are obtained by the blind source separation, and determining useful signals and interference signals. The invention also discloses a receiving device of the spread spectrum signals and a spread spectrum communication system. By the invention, the anti-interference performance of the spread spectrum communication is effectively improved, an output signal to interference ratio is improved, and practicability and flexibility are relatively high.

The invention discloses a gas-liquid separator combining centrifugal separation, a baffle plate and a filter. A top cover is arranged at the upper end of a vertical cylindrical shell, an inversely conical centrifugal separation liquid separation cavity is arranged at the lower end of the vertical cylindrical shell, a feeding opening is arranged at the upper middle part, and a spiral type pre-separator is arranged at the inner side of the vertical cylindrical shell; a gas guide pipe is arranged at the upper end of the top cover; a gas puffier is arranged at the center position of the inner lateral face of the top cover; a liquid outlet is arranged at the lower end of the inversely conical centrifugal separation liquid separation cavity; the feeding opening is connected with the spiral type pre-separator; the spiral type pre-separator comprises a sealed type spiral stream guidance sheet, an open type spiral stream guidance sheet and a spiral absorption property filter; and the gas purifier comprises an absorption filter, a NO.1 inversely conical bottom-open baffle plate, a conical top-open baffle plate, a NO.2 inversely conical bottom opening baffle plate, a baffle plate connection rod and a porous medium spoiler. The gas-liquid separator is compact in structure; various separation principles including centrifugal separation, impact, condensation capturing, absorption filtering and inertia separation are integrated inside the separator; and the gas-liquid efficient separation can be satisfied.

The invention provides a beneficiation reagent and method for separating copper-molybdenum mixed concentrates. According to the invention, the effective separation of copper-molybdenum mixed concentrates can be realized by using a concentrated reagent removal and an oxalic acid reduction method, and the oxalic acid reduction method has an effective restraining effect on primary and secondary copper-sulphide ores such as chalcopyrite and chalcocite and the like, the process is simple and reasonable, and the recovery rate of molybdenum is high. The method disclosed by the invention concurrentlyhas the characteristics of good stability, strong adaptability and less reagent consumption, and can greatly reduce the production cost.

The invention provides a method for recycling a waste and old nickel-plated rare-earth-iron-boron series permanent magnet material. The method comprises the following steps of: (1) treating the surface of the waste and old nickel-plated rare-earth-iron-boron series permanent magnet material; (2) mechanically crushing the surface-treated waste and old nickel-plated rare-earth-iron-boron series permanent magnet material to obtain mixed particles with 1-50 mm particle size; (3) performing hydrogen absorption treatment on the particles in anaerobic environment to obtain a nickel layer and rare-earth-iron-boron series permanent magnet material powder with 0.01-5 mm particle size, and recovering the nickel layer through screen separation; (4) adding an auxiliary material into the rare-earth-iron-boron series permanent magnet material powder, and performing ball milling or jet milling after uniform mixing to obtain mixed powder with 0.1-100 mum particle size; and (5) performing oriented formation, sintering and tempering heat treatment on the obtained mixed powder. The method provided by the invention has the advantages of simple process, low cost and no environmental pollution.

A process for separating solids from liquids in a filtration zone defined by a higher concentration zone and a lower concentration zone separated by a filter. The process includes the steps of directing a slurry feed comprising a liquid and solids into the higher concentration zone, directing a displacement fluid to the higher concentration zone and passing at least a portion of the liquid through a filter to the filtrate zone, producing a filtrate.

This invention provides a method for efficiently separating and recovering a wash coat which supports noble metal-containing catalytic component from a metallic carrier of a spent metallic carrier catalytic device for such purposes as the purification of exhaust gas from internal combustion engine, without substantially crushing or dissolving said metallic carrier, which method comprises subjecting a metallic carrier catalytic device which is composed of a metallic carrier having a wash coat provided thereon and a noble metal-containing catalytic component which is supported on the wash coat to a treatment with an aqueous solution of mixed acid which contains sulfuric acid and nitric acid.

An enclosure covers a UV lamp and has a mechanically-adjustable opening for changing an amount of the UV radiation being emitted from the enclosure, and an ozone-creating passageway receives the radiation being emitted from the enclosure. A method includes producing ozone-generating radiation, mechanically attenuating the ozone-generating radiation, and mixing the attenuated ozone-generating radiation with air to produce ozone. The method may include powering a lamp for emitting ozone-producing radiation, and adjusting an amount of ozone produced by the ozone-producing radiation by rotating a first opening with respect to a second opening.

The invention provides a method and device for identifying a small-scale geologic body through diffraction refocusing. The method includes the steps that a reflecting interface dip angle field is obtained according to earthquake imaging data; residual earthquake data without reflecting interface information are obtained through a linear filtering operator according to the reflecting interface dip angle field obtained through the earthquake imaging data; migration velocity analysis on over-excursion or under-excursion diffracted waves is carried out again through an isolated non-completely-focused diffracted wave field with the velocity analysis method; diffracted wave refocusing is completed through the excursion algorithm according to the residual earthquake data and the residual diffracted wave excursion speed. The device corresponds to the method. By means of the method and device, the small-scale geologic body with the bead-like karst, fissures, small-scale breakage and the like which are directly related to a carbonate reservoir can be effectively isolated, and the technical effect has the good application value on evaluating an oil and gas resource reservoir in the oil industrial circles.

The present invention discloses a preparation method and an application of a metal organic framework membrane for CO2 separation. The metal organic framework membrane preparation method comprises: dissolving AlCl3.6H2O and H2N-H2BDC in methanol or a methanol and solution A mixed solution to prepare a membrane forming solution; and placing a carrier with CAU-1 crystal seed introduction or with no crystal seed introduction in the prepared membrane forming solution, making the membrane forming solution be subjected to crystallization membrane forming on the surface of the carrier, washing, and drying. The metal organic framework membrane is the first novel MOF membrane material capable of effectively separating CO2 and N2 under the flue channel gas composition condition, wherein the membrane forming condition is broad, and the continuous membrane layer can be formed with the in situ growth method, the secondary crystal seed method and the internal and external diffusion method. The membrane presents good performances in applications of separation of CO2/N2 and CO2/CH4 in flue gas and nature gas.

The invention discloses a three-phase fluidized bed reactor. The three-phase fluidized bed reactor comprises a reactor shell and a three-phase separator, wherein the reactor shell comprises an expansion section and a straight-tube section from top to bottom; the three-phase separator is arranged in the expansion section; the upper part of the straight tube section on the reactor shell is provided with a guide port which has an annular passage structure; the outer side of the guide port is tightly connected with the inner wall of the straight tube section on the reactor shell; and the inner diameter of the guide port is 50 to 95 percent of the inner diameter of the straight tube section on the reactor shell. The fluidized bed reactor organically combines the expansion section, the guide port and the three-phase separator to enhance the operation elasticity of the reactor and ensure efficient separation of the three-phase separator. The reactor is mainly suitable for carrying out a chemical reaction under the condition that different types of liquid and gas substances contact with solid particles, and has the advantages of large catalyst inventory, high reactor utilization rate, simple structure, easy operation and the like.

The invention discloses a method to separate and enrich a metallic carbon tube with special electrical performance from single-walled carbon nanotubes. The method of the invention is that: a right amount of to be separated carbon nano tubes and separating promoter are added into an organic solvent, and the system is ultrasonically mixed, so that the separating promoter can fully absorb specific carbon nano tubes, then precipitation in the solution is removed and the liquid is remained; and then the carbon tubes suspending in the liquid are separated, the organic solvent is used for cleaning the carbon tubes to remove the organic that is not absorbed by the carbon tubes, thus, the product enriched with metallic carbon tubes is prepared. The separating promoter adopted by the invention is a compound with a linear condensed nucleus aromatic hydrocarbon structure, the condensed nucleus part of the compound comprises at least three aromatic rings.

The invention provides a method for disturbing and inhibiting fractional fourier transformation through adding window segmentation overlapped processing, which comprises: firstly, utilizing the differences between the noise characteristics of a direct-spread communication signal on a fractional fourier region and the energy focusing characteristics of a sweep frequency interfering signal on a corresponding order, finishing the separation between the communication signal and the sweep frequency interference, then, utilizing window functions to inhibit the characteristics of side lobes of the sweep frequency interference, reducing the side lobe leakage of the interfering signal after transformation, enabling the energy of the sweep frequency interference on the fractional fourier region to focus on a major lobe, thereby effectively separating the interference and an useful signal, finally, adopting a method of segmentation overlapped processing, solving the problem that the energy of an edge signal is low due to adding window, inhibiting the energy of the sweep frequency interfering signal to the maximum, simultaneously, guaranteeing signal energy loss as little as possible, achieving higher code error rate performance, and guaranteeing reliable communication of a direct-spread system.

A microfluidic channel for effectively removing a gas from a fluid, and microfluidic apparatus including the same are provided. The microfluidic channel includes a first channel having a uniform cross-sectional area, and a second channel connected to the first channel and having a gradually expanded cross-sectional area.

The invention provides a method for removing aniline from industrial high salt-containing aniline wastewater. The method comprises the steps of processing aniline wastewater via a solvent extraction method under the action of a salting-out effect; mixing the wastewater, sodium chloride and nitrobenzene used as an extracting solvent in an atmospheric static mixing reactor; pumping the mixture to a tubular static mixing reactor via a raw material pump to make the extracting solvent nitrobenzene mixed with the aniline wastewater thoroughly; processing the raffinate with an aerobic-anaerobic microbial oxidation combined process; passing the raffinate through the anaerobic tank to perform anaerobic degradation treatment; and passing the anaerobic treated wastewater into the aerobic tank to perform aerobic degradation treatment. With the method for removing aniline from industrial aniline wastewater, aniline can be separated out from the industrial aniline wastewater effectively; the extracted and separated aniline and the extracting agent can be reused without separation; the separating process generates no pollutions; energy consumption of the separation is low; and processing cost of the separation is low. The method can be used for the aniline wastewater generated by industries of dye, agriculture, medicine, military industry, chemical industry, etc.

The invention discloses a preparation method of battery-grade lithium carbonate. The preparation method comprises the following steps: taking a lithium adsorption and desorption eluent as a raw material, performing primary and secondary monovalent ion selective electrodialysis treatment, concentrating and enriching a lithium ion by utilizing the monovalent ion selectivity of a monovalent ion selective cation membrane and a monovalent ion selective anion membrane, and intercepting magnesium ions, sulfate ions and borate ions, thereby realizing efficient separation of lithium and magnesium as well as sulfate and borate ions and other impurity ions and lithium concentration and obtaining a lithium-rich concentrated solution with a lithium content of 10-20 g/L and a ratio of magnesium to lithium of 0.1-1; obtaining the battery-grade lithium carbonate through the steps of deep calcium and magnesium removal, heavy lithium conversion, filtering and washing, drying, cooling and the like. According to the preparation method disclosed by the invention, the preparation process of the battery-grade lithium carbonate is greatly shortened, the process continuity is obviously improved, the cost is reduced, and the bottleneck problem of magnesium removal and concentration by using the salt lake lithium adsorption and desorption eluent with high magnesium-lithium ratio is solved.

A vehicle body rear structure includes an upper back cross-sectional portion which forms a skeleton that is elongated in a vehicle width direction, a bracket package tray which is located on a vehicle rear side of the upper back cross-sectional portion and joined to the upper back cross-sectional portion, a roof side inner which is located on a vehicle top side of a wheel house, a roof side outer which is located outside an extended portion and the roof side inner in a vehicle width direction and which has a front end portion which is joined to the upper back cross-sectional portion and a rear end portion which is joined to a bracket package tray, and a bulk which couples the roof side outer and the upper back cross-sectional portion.

The present invention discloses a comprehensive pre-treatment method of kitchen garbage and gutter oil. The method comprises material collection, sorting treatment, pulping treatment, deoiling treatment and overall deodorization treatment. By adopting a multi-step and multi-stage sorting process, the method disclosed by the invention effectively separates non-biomass impurities in kitchen wastes, thereby providing an advantageous condition for a subsequent treatment process. According to the present invention, a two-stage centrifugal manner is used in grease separation and purification for increasing the separation accuracy, reducing the residence time, reducing the energy consumption, and a primary stage horizontal centrifuge is used for solid-liquid separation and a secondary vertical centrifuge is used for oil-water separation. As materials with a high solid content separated by the primary centrifuge no longer enter into the secondary centrifuge, the energy consumption is significantly reduced, the residence time can be shortened, and the separation accuracy is improved. According to the method disclosed by the present invention, the pre-treated materials have an ultra low oil content, can be adaptive to various post-treatment processes of composting, producing biogas by anaerobic fermentation, processing feeds and the like, and can be flexibly applied to subsequent process, thus providing a guarantee for realizing harmlessness and recycle of kitchen wastes.