37results about How to "Achieve deep separation" patented technology

The invention discloses oil-water separating device and method. The oil-water separating device comprises a swirler and a horizontal type agglutinating oil-water separator, wherein a bottom flow pipe of the swirler is in a U shape; the horizontal type agglutinating oil-water separator has the liquid uniform distributing function; an inlet liquid distributor, a rectifying sieve plate, a stainless steel plate ripple filler, a polypropylene gauze ripple filler, an outlet liquid collector, and the like are sequentially arranged in the horizontal type agglutinating oil-water separator, and the stainless steel plate ripple filler and the polypropylene gauze ripple filler are fixed by a limit grid plate; the U-shaped bottom flow pipe of the swirler and a filter screen arranged in the swirler can filter a small number of solid impurities contained in liquid so as to prevent the blockage of agglutinated fillers; the inlet liquid distributor and the outlet liquid collector ensure that the liquid is uniformly distributed; the rectifying sieve plate reduces the flow rate of the liquid to form lamellar flow; the stainless steel plate ripple filler provides a place for agglutinating and separating oil drops; and the polypropylene gauze ripple filler with an air floating device can further agglutinate and separate residual fine oil drops. The combination simultaneously has the effects of whirl, agglutination and air floatation and can realize the deep separation of oil and water.

The invention relates to a method for separating and recycling vanadium and chromium from a vanadate-chromate-containing solution, which is characterized in that by using the difference of between anion exchange potentials formed by hexavalent chromium and quintavalent vanadium in water solutions by weak alkali and strong alkali anion exchange resins, saturation adsorption is utilized to implement deep separation of vanadium and chromium, thereby obtaining the vanadium and chromium products. The invention has the characteristics of short technological process, favorable separating effect, environment friendliness and the like, and is simple to operate. The invention can effectively shorten the technological process for separating and recycling vanadium and chromium from the vanadate-chromate-containing solution, enhance the separating effect of vanadium and chromium, lower the recycling cost of vanadium and chromium, and save the reagent consumption; and vanadium and chromium in the solution are deeply separated through ion exchange and are respectively recycled. The invention is suitable for industrialized application.

The invention relates to a method for deeply separating molybdenum and vanadium in a solution containing the molybdenum and the vanadium. The method includes: regulating the acidity [H<+>] of the solution containing the molybdenum and the vanadium to be 0.0003-10mol/L, and then using the compound of Mo(IV) or/and Mo(V) as the reducing agent to selectively reduce the vanadium in the solution to obtain liquid after reduction; regulating the pH of the liquid after reduction to be 4-7, settling the vanadium, and using an ion exchanging method or extraction method to enrich the molybdenum; or regulating the pH of the liquid after reduction to be 2-4, using an ion exchanging method or extraction method to enrich the molybdenum, then regulating the pH to 4-7, and settling the vanadium. The method has the advantages that the E<0>Mo(VI)/Mo(V) and E<0>V(V)/V(IV) potential differences under an acidic condition are utilized, the compound of Mo(IV) or/and Mo(V) as the reducing agent to selectively reduce the V(V) in the solution into V(IV), and the maximum differentiation of the properties of the molybdenum and the vanadium in the solution is achieved; the property that anion exchange resin or basic extractant can only selectively enrich the Mo(VI) in the solution and cannot absorb the V(IV) is utilized to deeply separate the molybdenum and the vanadium; the method is simple in process, short in process flow, convenient to operate, good in molybdenum-vanadium separation effect, low in treatment cost, environmental friendly, suitable for industrial application, and the like.

The invention relates to the technical field of oil-sludge separation equipment, and in particular, relates to oil-sludge separation equipment for an oil field based on oil-sludge treatment and a separation method of the oil-sludge separation equipment. The oil-sludge separation equipment comprises a shell, a separation tank, a feeding grinding assembly, an oil-sludge separation structure, a vibration separation structure, a deflection protection universal ball, a vibration stabilizing structure, a telescopic oil nozzle assembly, an evaporation box and a transmission switch assembly. Deep separation of the sludge is realized through grinding of large particles of the oil sludge, high-speed stirring and mixing, low-speed stirring and separation, oscillation separation and collection and recovery, so that the oil sludge is layered and separated more thoroughly, the equipment operation is simpler, the oil sludge separation is more efficient, and the problem that traditional equipment can only remove sludge on a surface layer by means of calcination evaporation and is low in efficiency is solved.

The invention provides an oil-water separation device and an oil-water separation method, belonging to an oil-water separation technology in the field of environmental protection. The oil-water separation device is simple in structure, high in separation efficiency and capable of operating for a long period. The oil-water separation device comprises an oil-water separation unit, wherein a liquid distributor, a liquid rectifier, an oil drop gathering partition plate, an oil-water layering strengthening partition plate and a dirty oil leading-out partition plate are arranged in the oil-water separation unit; and multiple structures in the oil-water separation unit are orderly arranged, so separation of oil and water in oily wastewater is facilitated. The oil-water separation device providedby the invention is high in oil-water separation efficiency, and can realize deep separation of oily wastewater.

The invention discloses a method for selectively separating tantalum and niobium step by step based on floating extraction. The method comprises the following steps of adding hydrofluoric acid to a solution containing tantalum and niobium to convert tantalum and niobium in the solution into fluorotantalate and fluoroniobate; adding a floating extraction agent and a bubble dispersant to the solution and introducing air to form microbubbles, promoting the hydrophobic mineralization of bubbles to form fluorine tantalum/niobate-floating extraction agent-bubble microdroplets, and finally enrichingtantalum and niobium components by floating extraction; adding a pH adjuster and a niobium stripping agent to the tantalum-niobium-enriched component to obtain niobium liquid after stripping; and thenadding a pH adjuster and a tantalum stripping agent to a stripping raffinate and stripping to obtain a tantalum solution. The method has good selective separation effect on tantalum and niobium, simple process flow and low operation cost, effectively overcomes the shortcomings of multi-stage solvent extraction and stripping, and is particularly suitable for deep separation of tantalum and niobium.

The invention relates to a purification method of the byproduct sodium chloride in betaine or betaine hydrochloride production. The method includes: preprocessing reaction mother liquor, preliminarilyseparating betaine and crude sodium chloride, performing secondary purification and separation, combining betaine and purifying, combining with the sodium chloride and purifying, refining and the like. The method has the advantages that the method is suitable large-scale industrial separation and purification and high in economic performance and environment protection performance and does not need procedures such as electrodialysis; the purified sodium chloride can meet feed grade standards, byproduct recycling is achieved, and the method is simple and does not generate secondary pollution.

The invention provides a harmless treatment method for recycling valuable metal and arsenic resources from arsenic-containing smoke. All valuable elements are recycled and utilized through the procedures of carrying out oxygen pressure leaching via caustic alkali; carrying out selective reduction purification on leachate; during purification, carrying out hydrogen reduction and vacuum distillation on obtained crude tellurium so as to obtain high-purity tellurium; after purification, obtaining a pure sodium arsenite solution, and using the solution for the arsenic salt purification of a zinc sulfate solution so as to remove cobalt and nickel; carrying out fluidization washing on leaching residues; after washing, solidifying arsenic in the solution, and carrying out reduction smelting on the residues; and carrying out oxidization blowing and the like. The arsenic is removed from the smoke, stibium, lead, bismuth, stannum and the like are kept in the residues from which the arsenic is removed as much as possible, and the deep separation of the arsenic and the stibium is realized. The obtained pure sodium arsenite solution is used for the arsenic salt purification of the zinc sulfate solution used for wet-process zinc smelting so as to remove the cobalt and nickel raw materials, part of sodium arsenate with high impurity content is solidified, the arsenic is precipitated, the harmless recycling of the arsenic resource is realized, and the valuable elements, such as the tellurium, the stibium, the lead and the bismuth are recycled. The comprehensive utilizing rate of the resources is high, the application range of the raw materials is wide, and a pollution problem in the extracting process of a traditional technology is solved.

The invention discloses a high-purity hydrogen selenide purification process using carbon nanotubes, which comprises the following steps: S1, introducing a hydrogen selenide raw material into a primary rectifying tower in a liquid form, and carrying out preliminary rectification; s2, introducing the hydrogen selenide material subjected to primary rectification in the step S1 into a secondary rectification tower, and carrying out secondary rectification; s3, enabling the hydrogen selenide material subjected to secondary rectification in the step S2 to pass through an adsorption column in a gaseous form, filling the adsorption column with a mixture of carbon nanotubes and activated carbon, and performing adsorption treatment; and S4, pressurizing the hydrogen selenide material subjected to adsorption treatment in the step S3 to 1.5 Mpa through pressurizing treatment of a compressor, cooling to -10 DEG C, cooling, liquefying, storing into a storage tank, and finally filling by utilizing afilling pipeline. According to the process disclosed by the invention, the separation of hydrogen selenide and hydrogen sulfide is realized by regulating and controlling the pipe diameter of the carbon nano tube, and a high-purity hydrogen selenide material can be obtained.

The invention discloses a device and method for conducting diffusion dialysis and electrolysis electrodialysis integrated treatment on vanadium alkali feed liquid in the alkali method vanadium extraction process. The device is characterized in that a retentate tank of a diffusion dialysis device is combined with an anode liquor tank of an electrolysis electrodialysis device, a dialysate tank of the diffusion dialysis device is combined with a cathode liquor tank of the electrolysis electrodialysis device, and the device for conducting integrated treatment on the vanadium-alkali feed liquid in the alkali method vanadium extraction process is formed; and primary separation is conducted on vanadium-alkali feed liquid through the diffusion dialysis device in the integrated treatment device, and retentate generated after diffusion dialysis is deeply separated through electrolysis electrodialysis. According to the method, in combination with the diffusion dialysis device which has the advantages of being large in treatment capacity, low in energy consumption, low in film pollution, high in electrolysis electrodialysis zero-vanadium leakage rate and efficiency and the like, the vanadium-alkali feed liquid is treated in the alkali method vanadium extraction process with the lower energy consumption, the concentration of the recycled alkali liquor is high, the former working procedure can be directly executed, vanadium extraction can be conducted again, and circulating use is achieved.

The invention relates to the metallurgy field, and in particular relates to a steelmaking slag separation method, aiming at solving a technical problem of providing a steelmaking slag separation method which can realize separation and recycling of steelmaking slag with high efficiency. The steelmaking slag separation method is characterized by comprising the following steps: a, conducting hot-simmering treatment on steelmaking slag; b, putting the steelmaking slag to a stock bin and sieving the steelmaking slag; c, obtaining over-sized materials and under-sized materials after being sieved by a bin roller screen, wherein the under-sized materials are sieved by a two-layer flat screen; d, obtaining materials in three specifications, and sequentially processing the materials in three specifications through a semi-permanent magnetic roller; and e, obtaining concentrate, tailing, magnetic separation material and tailing powder through the semi-permanent magnetic roller. The separation method disclosed by the invention realizes deep separation of the steelmaking slag and sufficiently recovers various components in the steelmaking slag, thus improving a utilization rate of the steelmaking slag; and the method disclosed by the invention is especially suitable for a separation process for metallic iron in the steelmaking slag.

The invention relates to phosphate preparation equipment and a preparation method thereof. The equipment comprises a multi-stage esterification reaction unit, a dealcoholization device and a gas washing device for recovering hydrogen chloride and monohydric alcohol, and the multi-stage esterification reaction unit is formed by connecting a plurality of esterification reaction units in series in sequence; wherein a raw material input port of the esterification reaction unit at the head part is connected with a raw material output port of a gas washing device, and a mixture input port of the gas washing device is used for being connected with the esterification reaction units and the mixture output port of the dealcoholization device in parallel; and the raw material input port of the dealcoholization device is connected with one esterification reaction unit positioned at the tail part. According to the invention, unreacted monohydric alcohol entrained during volatilization of hydrogen chloride is recovered by utilizing the gas washing device, phosphorus oxychloride entrained in absorption liquid during volatilization of hydrogen chloride is absorbed by industrial hydrochloric acid water, and then volatile hydrogen chloride is absorbed by industrial water, so that industrial-grade qualified byproduct hydrochloric acid can be prepared, waste of raw materials is reduced, and the yield of waste gas, waste water and solid waste is also reduced.

The invention discloses a system for recovering heavy hydrocarbon in VOCs in a storage tank. The system comprises an ejector, a heat exchanger and a micro-channel cyclone separator, a working fluid inlet of the ejector is connected with a fuel gas pipe of the heating furnace, and an ejection fluid inlet of the ejector is communicated with an upper gas cavity in the oil tank through an ejection pipe; a mixed fluid outlet of the ejector is connected with a heat source medium inlet of the heat exchanger; a heat source medium outlet of the heat exchanger is connected with a tangential inlet of the micro-channel cyclone separator; a cold source medium inlet of the heat exchanger is connected with a cold flow outlet of the vortex tube; a cold source medium outlet of the heat exchanger is connected with an inlet of the vortex tube; an inlet of the vortex tube is connected with a heating furnace fuel gas tube; and a liquid phase tangential outlet of the micro-channel cyclone separator is connected with a heavy hydrocarbon recovery pipeline, and a gas phase outlet of the micro-channel cyclone separator is connected with a fuel gas inlet of the heating furnace. A cold source in the heat exchanger is directly obtained by decomposing fuel gas of a heating furnace in a factory area through the vortex tube, and materials are convenient to obtain.

The invention discloses a method for preparing high-purity pyrite through flotation mass transfer kinetics regulation and control, which comprises the steps of slurrying micro-fine-particle high-arsenic pyrite, fully stirring in an inert atmosphere to uniformly disperse particles, transferring into a flotation machine, sequentially adding an efficient inhibitor, a sufficient amount of collecting agent and a foaming agent for roughing, scavenging and finely selecting, well controlling the scavenging operation frequency, the reagent dosage and the flotation time, and finally conducting closed-loop flotation. Products in a first-time fine selection groove and foam products obtained through first-time scavenging are combined and re-selected and then return to roughing operation, and mass transfer dynamics regulation and control blind areas and foam mechanical entrainment are made up. Finally, high-purity pyrite concentrate with the sulfur content greater than 52%, the iron content greater than 44% and the arsenic content less than 0.3% is obtained, and the recovery rate of sulfur is 55-65%. The method has the advantages of being easy to regulate and control, low in medicament consumption, remarkable in economic benefit and the like, and can be widely applied to fine separation of complex non-ferrous metal sulfide minerals.