799results about How to "Achieve the purpose of separation" patented technology

The invention belongs to the technical field of solid waste treatment and relates to a micro-plastic separation method and device. The micro-plastic separation method comprises the steps that (1) settlings of field natural water are collected; (2) the settlings of the field natural water is subjected to low-temperature drying and freeze-drying, and samples to be treated are obtained; (3) after a density solution is added into the samples to be treated, sufficient stirring is conducted until the samples to be treated are completely suspended in the density solution, and a non-sediment layer and a sediment layer are formed from top to bottom after still standing; and (4) the non-sediment layer is extracted and passes through a filter film, liquid passing through the filter film is repeatedly used, and objects isolated by the filter film include but limited to micro-plastic particles in the settlings of the field natural water. The provided micro-plastic pollutant separation method and device are capable of rapidly and effectively separating and extracting the micro-plastic particles in settlings of water such as rivers and lakes.

A process for preparing iron oxide red pigment from ferrous sulfate as the by-product of titanium oxide includes such steps as reducing iron scale at 50-70 deg.c, hydrolyzing for 6-10 hr, flocculating, deposition, refining heptahydrated ferrous sulfate, neutralizing with ammonia to generate crystal seeds, and neutralizing with ammonia while oxidizing with air to obtain target product. Its by-product, solution of ammonium sulfate, can be used for preparing composite fertilizer.

The invention discloses a separation method of copper-lead sulfide minerals and belongs to the field of mineral separation. According to the method, the copper-lead sulfide minerals are used as raw materials. The separation method includes steps that raw ores are milled; copper and lead mixed rough concentrate is obtained by means of a flotation method, lime and zinc sulfate which serve as inhibitors are added to the copper and lead mixed rough concentrate for concentration to obtain copper and lead mixed concentrate, CMLM (starch phosphate: sodium carboxymethyl starch=(2-4):1) is added to the copper and lead mixed concentrate, the CMLM is used as an inhibitor of lead minerals, and Z-200# is used as a flotation collecting agent of copper minerals for performing copper-lead separation. The CMLM which is used as an inhibitor of lead sulfide minerals has the advantages of being good in selectivity, high in inhibiting ability, small in using amount and convenient to add, activated carbon reagent removal or mechanical concentration reagent removal is not required during the process of copper-lead separation, the operating procedure is simple, problems of environmental pollution brought by traditional dichromate methods and cyanide methods and high costs are solved, and the floating separation method for separating the copper-lead sulfide minerals is simple, convenient, efficient and environment-friendly.

The invention belongs to the field of complicated copper-lead-zinc sulphide ore beneficiation separation and provides a copper-lead separation flotation inhibitor and applications thereof. The copper-lead separation flotation inhibitor is formed by mixing polymeric ferric sulfate solution with a mass concentration of 5.0%-6.0% and glycerin solution with a mass concentration of 0.8%-1.2%, wherein the mass ratio of the polymeric ferric sulfate solution to the glycerin solution is 1:1-4. Addition of the inhibitor in copper-lead separation operation can remarkably improve copper and lead concentrate qualities, evidently lower mutual containing of copper and lead, and improve flotation recovery rate of copper and lead minerals. The copper-lead separation flotation inhibitor and the applications thereof have the advantages that the copper-lead separation flotation inhibitor is environment-friendly, efficient in sorting, low in reagent cost, easy to operate and the like and applicable to the complicated copper-lead-zinc sulphide ore beneficiation separation.

The invention relates to a separation technology of hydrogen sulfide and carbon dioxide in acid gas of an oil refinery. According to the technical scheme, the separation technology comprises the following processing steps that the acid gas of the oil refinery flows through an acid gas separating tank and an acid water separating tank and then enters a first absorbing column; the acid gas at the bottom part of the first absorbing column is in contact with barren liquor from the upper part of the column, thus hydrogen sulfide in the acid gas can be fully absorbed to generate rich liquor; the rich liquor and barren liquor enter a first-grade rich-barren heat exchanger to exchange the heat and then enter a first regenerating column to regenerate; H2S gas generated at the top of a second regenerating column is condensed through a second condenser and then flows into a separating tank; a separated liquid phase is used for backflow in the top of the regenerating column; and a gas phase, namely, H2S gas, is used as sodium hydrosulfide to prepare some of raw materials. The separation technology has the beneficial effects that a methyldiethanolamine extracting agent at a concentration of 50% is selected; and compared with other extracting agents, the methyldiethanolamine extracting agent has relatively high selectivity and stability, causes a very little loss, and is low in energy consumption of devices.

The invention relates to a separation method for glycol, propylene glycol and butylene glycol and mainly aims to solve the problem of high energy consumption in separation of glycol, propylene glycol and butylene glycol by using azeotropic rectification in the prior art. The invention comprises the following sequential steps that: a raw material containing glycol, propylene glycol and butylene glycol and an extractant enter into an extraction tower (1) respectively from the top and the bottom of the extraction tower, an extractant material flow I containing butylene glycol is obtained at tower top, and glycol material flow II containing propylene glycol is obtained at tower bottom; the material flow I enters into the central part of an extractant recovery tower (2), the recovered extractant is obtained at tower top, and an extractant solution containing butylene glycol is obtained at tower bottom; the material flow I enters into the central part of a glycol treating tower (3), a solution containing propylene glycol and the extractant is obtained at tower top, and the product of glycol is obtained at tower bottom. The method provided in the invention enables the above-mentioned problem to be well overcome and can be used in industrial production for separation of glycol, propylene glycol and butylene glycol.

The invention discloses natural perfume refining fluid suitable for cigarette fluid of electronic cigarettes and cigarette fluid and a preparation method thereof, and belongs to the technical field of cigarette fluid of electronic cigarettes. Separation and impurity removal are performed on natural perfume such as extract, tincture and absolute oil through a macroporous adsorption resin column chromatography technology, high-boiling-point components such as monosaccharide and disaccharide and macromolecular components such as protein, polysaccharide and pectin in the natural perfume are simultaneously and effectively removed according to the differences of polarities and molecular sizes of all the components in the mixture, the components unfavorable for the smoking mouthfeel of the electronic cigarettes are removed, and the problem that charring flavor is generated due to the fact that the substances are deposited on heating wires is solved; meanwhile, the solubleness of the natural perfume in propylene glycol and glycerinum is improved, therefore, the cigarette fluid of the electronic cigarettes becomes clear and bright, the emission performance of perfume is significantly improved, the sweet greasy feeling is reduced, and the sensory effect is significantly improved.

The invention discloses a preparation method of an oil-water separation mesh film with super-hydrophilicity and super-lipophobicity. The method comprises the steps that a metal net with the mesh size being 400-2,000 is adopted as a substrate, a cold spraying method is adopted, net wires of the metal net are coated with hydrophilic materials in a spraying mode, the hydrophilic materials are one or more of zinc oxide, silicon dioxide, calcium carbonate and titanium dioxide, and the grain size range is 5-200 nanometers; finally sintering is performed under the temperature of 300-750 DEG C for 60-240 min, and the oil-water separation mesh film with super-hydrophilicity and super-lipophobicity is obtained. The metal net does not need to be modified, the binding force is improved with no adhesive, no secondary pollution is generated, cleaning is easy, and the mesh film can be repeatedly used.

The invention provides a method for collecting floating oil on a water surface. In the method, an oil-water separation device is provided, wherein the device comprises an oil collecting cavity (2) defined by a wall (1), at least partial surface of the wall (1) is covered with a porous oleophylic hydrophobic layer (3), the part of the wall (1), covered with the porous oleophylic hydrophobic layer (3), allows water and oil to pass through, the device also comprises a fixing layer (4) which is covered on the surface or above the porous oleophylic hydrophobic layer (3) and is used for limiting the flowing of the porous oleophylic hydrophobic layer, and the fixing layer (4) allows the water and the oil to pass through, the hole diameter of the porous oleophylic hydrophobic layer (3) is 300 to 850mu, and the porosity is 10 to 40%; the oil-water separation device is placed on the water surface with the floating oil such that the at least partial surface of the fixing layer (4), which is covered on the surface or above the porous oleophylic hydrophobic layer (3) and is used for limiting the flowing of the porous oleophylic hydrophobic layer, is in contact with the water surface with the floating oil; and then the floating oil in the oil collecting cavity is collected. By means of the method provided by the invention, a large area of floating oil on the sea can be effectively collectedand the efficiency of collecting the floating oil is remarkably improved.

The invention relates to a zero discharge process for high-salt wastewater discharged from titanium dioxide production, and the steps are as follows: high-salt wastewater, removal of silicon by a magnesium agent, medicinal agent softening, high-density precipitation, immersion-type ultrafiltration, brackish water reverse osmosis membrane concentration, seawater desalination reverse osmosis membrane concentration, reduction of COD by catalytic oxidation, ion exchange softening, multi-stage nanofiltration salt separation, high pressure reverse osmosis membrane concentration, DTRO/ED electrodialysis concentration, and evaporation crystallization/freezing crystallization. The zero discharge process adopts corresponding treatment processes separately, realizes for the first time the zero discharge of the high-salt wastewater of titanium dioxide by a detailed control technology of each specific process in the system, ensures the normal and smooth operation of the system, and recovers a largeamount of fresh water resources and industrial salts. The purpose of resource recycling of the titanium dioxide production wastewater is realized, and on the basis of creating of certain economic benefits, significant environmental and social benefits are reflected.

The invention relates to a winding recovery device of a power cable, and belongs to the technical field of electric power cable recovery. The winding recovery device comprises a workbench, a conveyingassembly, a sheath-cutting assembly, a cleaning assembly, a peeling assembly and a recovery assembly, wherein the conveying assembly, the sheath-cutting assembly, the peeling assembly and the recovery assembly are sequentially arranged on the workbench from left to right; the cleaning assembly is arranged below the workbench, and one end of the cleaning assembly extends to the sheath-cutting assembly; the conveying assembly comprises a first mounting plate, a bearing plate, a driving part, a pressing part and two limiting plates, wherein the first mounting plate is vertically arranged on theworkbench; the bearing plate is fixedly connected with the front end face of the first mounting plate; and the driving part and the pressing part are arranged on the first mounting plate and the bearing plate. According to the cable, the sheath-cutting assembly is used for cutting an insulating sheath of the cable; and the peeling assembly separates the insulating sheath and metal wires of the cable; and the recovery assembly is used for winding and recovering the metal wires.

The invention relates to a method and a device for separating oil and water. The method comprises the following steps: a spiral pipe is divided into an upper pipe with the equal turning radius and a lower pipe with the variable turning radius, the upper pipe and the lower pipe are communicated in an integrative mode, the lower pipe is designed into a reversed cone shape, the inner side of the pipe wall of the lower pipe is provided with a plurality of holes at intervals, the center of the lower pipe is provided with an oil collecting pipe which is connected with the corresponding holes through a plurality of connecting pipes, water-phase liquid with larger density moves outside the pipe wall of the lower pipe by using the density difference between oil and water and centrifugal force generated by the spiral flow of oil-water mixed liquid in the spiral pipe, oil-phase liquid collects towards the inner side of the pipe wall of the lower pipe under the pressure function of the water-phrase liquid, meanwhile, the turning radius of the lower pipe is gradually reduced, under the condition that the flow speed of the oil-water mixed liquid is gradually reduced, the centrifugal acceleration is stably maintained, and the separated water-phrase liquid and oil-phrase liquid respectively flow out through a water-phrase liquid outlet arranged at the bottom of the lower pipe and an oil-phrase liquid outlet arranged at the bottom of the oil collecting pipe. The invention can be widely used for various oil-gas field separating systems.

The invention relates to a method for separating glycol from butanediol. By the method, the problems of a complex process and high energy consumption during the separation of the glycol and the butanediol by azeotropic rectification and particularly high separation energy consumption due to low content of the butanediol in a mixture at present are mainly solved. In the method, a glycol solution with less than or equal to 3 percent of butanediol contacts an adsorption column filled with an adsorbent, the butanediol is adsorbed by resin, raffinate is the glycol, and the adsorbent is selected from at least one of nonfunctional resin or a molecular sieve. Through the technical scheme, the problems are better solved. The method can be used for the industrial production of separating the glycol from the butanediol.

The invention discloses an oil-water slag separation device for kitchen garbage. The separation device comprises a feeding box, an oil-water separator and a solid-liquid separation rotary drum; a material outlet of the feeding box is communicated with a material inlet of the oil-water separator, and a material outlet of the oil-water separator is communicated with a material inlet of the solid-liquid separation rotary drum; the upper part of the oil-water separator is provided with an oil scraping collector, the middle part of the oil-water separator is provided with inclined plates, the bottom part of the oil-water separator is provided with aerator pipes, and each inclined plate is inclined in the reverse material flow direction; the inner wall of the solid-liquid separation rotary drum is provided with a conveying screw, and the side wall of the solid-liquid separation rotary drum is provided with sieve holes. The oil-water slag separation device for the kitchen garbage has the characteristics of simple structure, convenient operation, small power consumption, short treatment cycle, high degree of automation and the like, can effectively dewater the kitchen garbage, simultaneously separates out oil and water, and meets the needs of further treatment and utilization; and the oil-water slag separation device for the kitchen garbage can significantly decrease the oil content and the water ratio of solid matters, shortens the treatment cycle in a greater degree, and is more conducive to subsequent resource utilization.

The invention discloses a super-hydrophobic oleophilic sponge material and a preparing method and oil-water separation application thereof, and belongs to the preparation of high-performance oil-waterseparation composites. The preparing method includes the steps of cleaning a sponge to remove impurities, putting the sponge in roughening liquid for surface roughening treatment, and adding a fattyacid solution for hydrophobic modification treatment to obtain the super-hydrophobic oleophilic sponge material. The super-hydrophobic oleophilic sponge material is a sponge material obtained after anon-polarity long-chain alkane group conducts hydrophobic modification on the surface of a substrate with a polyurethane or melamine sponge as the substrate. The preparing process is simple, the priceis low, and the oil absorption performance is excellent and stable. The material can be widely applied for leaking oil recovery, oil-containing wastewater treatment and oil-water mixture separation;the super-hydrophobic oleophilic sponge material solves the problem that an oil-water separation porous material is low in mechanical strength, low in separation efficiency, poor in repeatability andthe like in the current stage.

The invention discloses a glow discharge plasma water treatment method comprising the following steps: after to-be-treated wastewater is subjected to mechanical treatment, water surface electrodes having the same potential are placed on the wastewater surface, the water surface electrodes are each cylindrical in shape, an insulating medium externally wraps the water surface electrodes, and the water surface electrodes are connected to a positive electrode or a negative electrode of a power source; an underwater electrode connected to the positive electrode or the negative electrode of the power source is placed in the wastewater, and is an exposed conductive material; the water surface electrodes are directly contacted with the wastewater, and a gap is formed between the outer surface of each water surface electrode and the water surface; after the power supply is switched on and an initial discharge voltage is reached, glow discharge is generated in the gaps, plasma and active particles are generated, and the wastewater is deep treated by utilizing the plasma and the active particles. The invention also provides a corresponding plasma water treatment device aiming at the plasma water treatment method. The method and the device are suitable for various water treatment, besides, can remove microbes and bacteria in the wastewater, and can remove peculiar smell radiated by the wastewater.

The invention discloses a three-dimensional high-definition mammary gland imager in the biological medical imaging domain, which is characterized by the following: judging pathologic position and degree of mammary gland tissue according to optical parameter according to grey, tissue structure and size semi-quantitatively or qualitatively; adopting infrared (600-900nm) as light source; modulating space of irradiated light through coded aperture without harmful detecting; forming digital infrared optical scanning hologram; utilizing digital decoded technique to extract the information of galactophore tissue; displaying three-dimensional high-definition image.