584results about How to "Good for volatilization" patented technology

Various systems and methods are described that can be used as part of a process to separate bitumen from oil sands. The process may include adding a hydrocarbon solvent to a bitumen containing extract. The tailings from this process may contain a significant amount of solvent. The solvent may be recovered from the tailings with a tailings solvent recovery unit that utilizes negative pressure to significantly reduce the cost of the process in comparison to a conventional steam stripping unit. In one embodiment, the tailings may also separated prior to entering the tailings solvent recovery unit with a gravity separation apparatus or a cyclonic separation apparatus, such as a hydrocyclone.

The invention discloses a method and a device for extracting lithium, which is used for preparing lithium carbonate, from a lapidolite ore by a chloridizing roasting method. The method comprises the following steps of: firstly, mixing the lapidolite ore, calcium chloride and sodium hydroxide with a compound bonding agent for pellet fabrication; secondly, performing chloridizing roasting in a square-frame shaped track type roasting furnace; thirdly, leaching out soot dust by using solution containing sodium carbonate and potassium carbonate to ensure that potassium, sodium, rubidium and cesium enter the solution and convert the lithium into lithium carbonate; fourthly, filtering the mixture to obtain a lithium carbonate solid, and circularly using the filtrated mother liquor to leach out the soot dust; fifthly, when an alkali metal salt is close to be saturated, indirectly heating the filtrated mother liquor by using the residual heat of the gas in the roasting furnace to evaporate part of water; sixthly, passing CO2 into the filtrated mother liquor to perform carbonation; and seventhly, performing cooling crystallization to separate out a mixed salt of the sodium carbonate and the potassium carbonate, returning part of the mixed salt which is used as an auxiliary material mixed and roasted with lapidolite for cyclic utilization, using another part of the mixed salt as a carbonate reagent needed in dissolution, and using the rest part of the mixed salt as byproducts of the sodium carbonate and the potassium carbonate. The method has the advantages of high lithium recovery rate, good material comprehensive utilization, large equipment productivity, high production efficiency, small water consumption in the process and less wastewater discharge.

The present invention discloses a titanium alloy chemical milling solution and its application milling process, which mainly contains nitric acid and hydrofluoric acid as the main components of mixed acid acidic corrosion solution, sodium lauryl sulfate, ethylene glycol n-butyl ether and/or or urea additives. The surface tension of the solution is maintained at a stable value by using the present invention. The adsorption of ethylene glycol n-butyl ether can reduce the interfacial tension and increase the chemical milling rate. Sodium lauryl sulfate, which improves the fluidity of the solution, can eliminate excessive corrosion of the metal at the root of the chemical milling fillet, and prevent the appearance of "grooves", "slopes" and "ripples". Sodium nitrate prevents the formation of scale of alloying elements on the surface of the chemical milling groove, improves the surface finish of the chemical milling surface and facilitates maintenance of the equipment. Urea can effectively absorb the nitrogen-containing gas produced in the chemical milling process, reduce the volatilization of acid liquid, and avoid pollution to the environment. The invention does not need heating equipment, the amount of hydrogen added is less than 9ppm, the service life of the solution is long, hydrogen embrittlement does not occur, and the process has little influence on the fatigue performance of the material.

The invention relates to an organic-polluted soil restoration method. Excavated polluted soil is divided into two types of soil, the first type of the soil contains non-aqueous phase liquid and the second type of the soil does not contain non-aqueous phase liquid. The method comprises the following steps of carrying out crushing and screening on the polluted soil containing non-aqueous phase liquid by a crushing-screening combined device, simultaneously, carrying out flushing pre-treatment by a surfactant, uniformly spreading and stacking all the polluted soil subjected to crushing and screening in an enclosed greenhouse, heating the polluted soil to a temperature of 80-100 DEG C by a geothermal system at the lower part of the polluted soil, keeping the temperature of the heated polluted soil in a range of 80-100 DEG C for 2-4h, then spraying a first oxidizing agent to the polluted soil by a spraying system in the enclosed greenhouse, then carrying out heating treatment on the polluted soil to a temperature of 60-80 DEG C and keeping the temperature for 6-10h.

The invention discloses a method for improving the stability of polypeptide active pharmaceutical ingredients. The polypeptide active pharmaceutical ingredients comprise but are not limited to bivalirudin, octreotide acetate, lanreotide acetate, eptifibatide or cetrorelix acetate, ganirelix acetate, degarelix, liraglutide, oxytocin, thymosin alpha1, leuprolide acetate, goserelin acetate, terlipressin or linaclotide. The method comprises the steps that after polypeptide drugs are salified, a polypeptide solution containing compensation ions is obtained, and a target polypeptide product is prepared through an ultralow temperature vacuum freeze-drying method. According to the method for improving the stability of the polypeptide active pharmaceutical ingredients, the problem that the polypeptide active pharmaceutical ingredients are prone to degradation after being placed for a long time is solved, the uniformity of the product is improved, and the drug risk is reduced.

The invention relates to a method for preparing a wall-flow honeycomb ceramic filter, which combines a cordierite honeycomb ceramics material and a special pore-forming agent. Raw materials comprise the following components, mass portions and grain diameters: kaolin is 35 to 45 portions, and the average grain diameter is less than or equal to 5 mu m; talcum is 20 to 30 portions, and the average grain diameter is 15 mu m; alpha-alumina is 4 to 9 portions, and the average grain diameter is less than or equal to 2 mu m; the pore-forming agent consisting of carbon granules or/and organic polymeric particles is 5 to 15 portions, and the average grain diameter is 10 to 20 mu m; and a bonding agent is 3 to 7 portions. The method comprises the following steps: evenly mixing the components and 20 to 30 portions of water to prepare a blank; completing the conversion from the blank to plastic mud after performing vacuum degassing for 2 to 3 times; staling the plastic mud for 24+/-8 hours, and squeezing out the plastic mud through a mould of an extruder; performing microwave drying on the plastic mud to obtain a dry blank; and performing cross hole blocking, drying, skin grafting and trimming on the dry blank, and finally performing a sintering working procedure to manufacture a product.

The invention relates to a network structure flame retardant. A phosphorus-containing macromolecular network structure flame retardant is developed aiming at the defects that the existing small-molecule flame retardant is easy to volatilize and emigrate, polymer flame retardants are less in types and the application field is limited. The preparation method comprises the following steps: preparing linear prepolymers, namely changing reaction conditions so as to obtain the linear prepolymers of different polymerization degrees; adding trifunctional cross-linked components so as to obtain a macromolecular flame retardant of different network structures; and finally, obtaining the final product through functional group end capping. According to the product, the problems of volatilization and transfer of the small-molecule flame retardant is improved, and the thermal decomposition behavior of the flame retardant can be regulated by changing the structure and reaction degree, so that products suitable for different polymer matrixes can be obtained. The raw materials used in the invention are wide in source and low in price, the polymerization process is mild in conditions and easy to produce, and the flame retardant is controllable in structure and can be independently taken as an intumescent flame retardant or serve as a charring agent or can be compounded with other flame retardants.

Disclosed is a combustion synthesis method of sub-micron titanium carbide nitride powder which comprises proportioning base raw material and thinning agent, the base material includes titanium oxide 55-62%, magnesite powder 20-40%, carbon black 0-20%, the thinning agent is carbon azotized titanium powder, the weight of the thinning agent is 0-2.3 times of the base raw material. The preparation process comprises high temperature drying, ball grinding, mixing homogeneously, cooling down with circulating water, reacting at the presence of nitrogen, cooling down and acid-washing, water scrubbing, filtering and drying to obtain the end product.

The invention discloses an organic contaminated site reinforced repair system which comprises an extraction system, a medicament injection system, a heating system and a blocking repair layer. According to the organic contaminated site reinforced repair system, the in-situ thermal desorption technology and the chemical oxidization technology are combined, meanwhile, a repair material layer is added, the repair material layer is prepared from slow release oxidization materials and mainly prepared from persulfate, natural clay materials, nonmetallic mineral, cement and the like, and sulfate radical produced after persulphate reaction can be fixed. By means of the repair system, on one hand, the organic contaminated site in-situ thermal desorption repair cost can be reduced; on the other hand, the in-situ chemical oxidation repair efficiency can be improved, secondary pollution can be reduced, accordingly, the repair cost is reduced, and the repair efficiency is improved.

The invention relates to a method for depriving a solvent for cis-polybutadiene, which is mainly used for solving the problems of high consumption of solvent naphtha and large consumption of water vapor in the prior art. The technical scheme adopted by the invention comprises the following steps: a) injecting a material stream I containing rubber liquid cement and hot water from the upper part ofa first cohesion kettle, ejecting a material stream II containing water and solvent from the top of the first cohesion kettle, and ejecting a material stream III from an overflow pipe at the lateral part of the first cohesion kettle, wherein the flow capacity of the material stream III is controlled by a liquid level controlling system; b) feeding the material stream III from a gas phase spatial position in the second cohesion kettle, after the material stream containing water and solvent is drawn out by vacuum-pumping equipment, feeding the material stream containing water and solvent into the bottom of the first cohesion kettle together with the supplementary fresh steam, and carrying out cohesion, thus obtaining a material containing cis-polybutadiene at the bottom of the second cohesion kettle; and c) obtaining the solvent after the stream II containing water and solvent is subjected to separation. By utilizing the technical scheme provided by the invention, the problems in the prior art can be better solved; and the method for deprivating the solvent for cis-polybutadiene can be applicable to the industrial production for deprivating the solvent for the cis polybutadiene.

The invention discloses emulsified liquid capable of replacing oil products. The emulsified liquid is prepared from the following components in percentage by weight: 30%-55% of naphthenic base oil, 10%-35% of an extreme-pressure lubricant, 0-10% of an oily lubricant, 2%-5% of an anionic emulsifier, 5%-12% of a nonionic emulsifier, 2%-10% of organic alcohol amine, 5%-10% of a rust inhibitor, 0.1%-1% of a copper corrosion inhibitor, 0-4% of a bactericide, 0-1% of a mildew preventive, 0-3% of a coupling agent and 0-10% of water. The formula of the emulsified liquid does not contain silicon, boron, phosphorus and formaldehyde, and the emulsified liquid is safe and environmentally friendly; on the other hand, by virtue of the emulsified liquid, the processing effects of the oil products can be realized, but the cost of the emulsified liquid is far lower than the costs of the oil products, so that the production cost of a user can be greatly lowered by virtue of the emulsified liquid.

The invention relates to a preparation method of polylactic acid porous microspheres. The method comprises the following steps: respectively preparing an oil phase solution and a water phase solution;pouring the oil phase solution into the water phase solution, and performing uniform stirring to obtain an O/W emulsion; stirring the O/W emulsion to obtain a polylactic acid microsphere suspension,screening out microspheres with a target particle size from the polylactic acid microsphere suspension, and performing collection to obtain semi-finished polylactic acid microspheres; and performing freeze-drying on the semi-finished polylactic acid microspheres to obtain the finished polylactic acid microspheres. The invention provides the polylactic acid porous microspheres, and the polylactic acid porous microspheres are prepared by using the above method. The invention also provides an application of the polylactic acid porous microspheres as a facial filler. The polylactic acid porous microspheres can produce encapsulation and fibrosis through a chronic inflammatory tissue reaction to stimulate human collagen proliferation to achieve the effect of filling beauty, and the porous structure characteristic can effectively reduce the residual of organic reagents, thereby ensuring the safety of the product.

The invention discloses a laser welding method for dissimilar metals, which is used for welding a high-melting-point metal workpiece and a low-melting-point metal workpiece. A gap is formed between the high-melting-point metal workpiece and the low-melting-point metal workpiece, and a laser beam irradiates from one side of the high-melting-point metal workpiece to one side of the low-melting-point metal workpiece to realize welding, so that low-melting-point metal vapor is easily volatilized, a combining part between the two workpieces is more uniformly and controllably heated, heat is more reasonably distributed, and the phenomena of splashing, perforating and the like can be avoided.

The invention relates to a halogen-free phosphate fire retardant used for engineering plastics and a method for producing the same, belonging to the engineering plastic fire retardant and the method for synthesizing the engineering plastic fire retardant technical field. The chemical name of the fire retardant is hydroquinone double phenyl bisphosphate oligomer, and the chemical structural formula is shown on the bottom right. The method comprises the following processing steps: firstly, the method adopts hydroquinone and phosphorus oxychloride as raw materials and a lewis acid as a catalyst for heating reaction; and secondly, the reaction mixture is heated up and dripped with phenol for reaction by taking the lewis acid as the catalyst. The production method has sufficient supply of the raw materials and simple reaction conditions, can reduce the manufacturing cost, and makes products have obvious price advantage; and simultaneously the material has the characteristics of zero halogen, low smoke, low toxity, low corrosiveness, high heat distortion temperature, good fire resistance, good processability, capability of being recycled, etc., and can be widely used as the fire retardant of various engineering plastics.

The application provides a method for manufacturing melt-spinning alloys and an apparatus thereof, which belongs to the technical field of metal materials and preparation thereof. The main feature of method including steps of melting alloy and jetting the molten alloy for rapid-quenching is that alloy melting and rapid-quenching are respectively implemented in independent environments, and the pressure of the two environments can be adjusted separately. The method can realize uniformity control of rapid-quenching velocity by controlling the melting and quenching pressure respectively, which has the advantages of increased rapid-quenching cooling rate, improved melt-spinning alloys thickness uniformity, reduced probability of nozzle clogging.

The invention discloses a tubular furnace method pressure-reduced debenzolization and distillation process. The process comprises the following steps of: carrying out heat exchange on rich oil from a benzene washing section by using an oil-gas heat exchanger and a lean oil-rich oil heat exchanger, entering the convection section of a tubular heating furnace for heating to 175-185 DEG C, then entering a debenzolization tower for debenzolization and distillation, collecting a crude benzene product from the tower top and returning lean oil at the tower bottom to a benzene washing tower, wherein the tower top pressure of the debenzolization tower is 13.3-70 kPa and the tower bottom pressure is 23.3-80 kPa; and the tower top temperature is 40-80 DEG C and the tower bottom temperature is 195-270 DEG C. Compared with traditional debenzolization processes, the pressure-reduced debenzolization and distillation process mainly has the advantages that: 1. the operation can be carried out under a negative pressure, and steam stripping can be omitted; 2. the yield of crude benzene is improved by 0.05-0.35%; 3. steam is not used; 4. since a regenerator is not used, the process structure is more compact and the occupation area is smaller; and 5. One oil-water separator is omitted, the regenerator is not used and a novel debenzolization tower is designed, thus effectively saving equipment investment cost.

The invention relates to the technical field of substrate manufacture, in particular to a vacuum drying device and a photolithographic process which are used for improving the photolithographic accuracy. The disclosed vacuum drying device comprises a vacuum chamber provided with exhaust vents and a chamber door, a vacuum pumping device communicated with the exhaust vents, as well as a heating assembly arranged in the vacuum chamber. When the vacuum drying device is adopted for performing vacuum drying on a substrate coated with photoresist, heating and vacuum drying simultaneously act on the photoresist, so that less hardening film is produced, the residual quantity of a solvent in the photoresist is reduced, and the photolithographic accuracy is improved. The invention further discloses a photolithographic process which comprises steps as follows: the substrate is coated with the photoresist; and the vacuum drying device with the characteristics is adopted for performing vacuum drying and heating on the photoresist coating the substrate at the vacuum degree ranging from 26 Pa to 500 Pa at the heating temperature ranging from 30 DEG C-90 DEG C.

The invention relates to a fragrant rotary face steamer which comprises a shell, an evaporation unit and a storage unit. The evaporation unit comprises a water tank and a rotary nozzle. The water tank and the rotary nozzle are installed at the two ends of the shell respectively. A hot steam generator, a cold steam generator and a driving plate are installed at the positions, between the water tank and the rotary nozzle, in the shell. The storage unit comprises a storage cavity formed in the shell. An upper cover is arranged at the upper end of the storage cavity. The bottom end of the storage cavity is communicated with an evaporation pipeline. The rotary nozzle can be driven by a driving mechanism to rotate or swing up, down, left and right. The fragrant rotary face steamer has the advantages that the driving mechanism can drive the rotary nozzle to rotate freely within 360 degrees and swing within 180 degrees, and therefore the problem that in a traditional structure, the nozzle adjustment range is small is solved.

The invention discloses a process for producing active lime, which comprises adhering a passivating agent onto the lime carbonate during the common lime burning procedure, the content of passivating agent in the lime carbonate being 1-30%.