95results about How to "Short purification time" patented technology

The invention relates to a treatment technique for purifying oil-polluted water. The invention provides a three-phase cyclone separator and a purification treatment system containing the three-phase cyclone separator for simplifying the purification process of oil-polluted water. The three-phase cyclone separator comprises a conical sludge collector at the lower part, a cyclone sedimentation area at the upper part, a sloped tube sedimentation area and a filter layer area, wherein a plurality of oil capturing plates are arranged between the sloped tube sedimentation area and the filter layer for forming an oil capturing area, the oil capturing plates are provided with conically raised oil-collecting cones which are evenly distributed, and a top oil collecting hole on the uppermost oil capturing plate is communicated to a cavity body provided with an oil outlet at the top part of a tank body through an oil pipe. The oil-polluted water purification treatment system including the three-phase cyclone separator comprises a medicament treatment and launching section, the three-phase cyclone separator and an oxidation and filtration adsorption section. The treatment technique has advantages of short technical process, less time consuming in the purification treatment, small occupying area, stable water treatment, recyclable oil resource, environmental protection and reaching the standards.

The invention discloses a chitosan composite gel water purifying agent, which is gel prepared from solution of chitosan, cellulose, silica gel and activated carbon according to the mass ratio of 1:1-2.5:2-3.5:3-5. The invention also discloses a method for preparing the chitosan composite gel water purifying agent, which comprises the following steps of: adding the cellulose, the silica gel and the activated carbon into the solution of chitosan in turn; fully stirring at a high speed until black and homogeneous semifluid gel is formed, and obtaining the chitosan composite gel water purifying agent. The water purifying agent is natural and nontoxic, has functions of high-efficiency adsorption and flocculation, can be used for deep purification of an underwater environment polluted by endocrine disruptors and also can be used for emergency treatment in public health water pollution emergency. Meanwhile, the preparation method makes operation simple, reduces cost and is environmentally-friendly and suitable for industrial production.

The invention discloses a method for preparing an oxiracetam compound, which comprises the following steps of: preparing crude products; and purifying and refining the crude products: firstly dissolving all crude products with an aqueous solution of alkyl alcohol, adding activated carbon for refluxing and discoloring, carrying out pressure filtration, stirring and crystallization on hot products for 10-30 hours, carrying out suction filtration, washing filter cake with glacial acetic acid, and carrying out vacuum drying at 40-60 DEG C to obtain a white powdery oxiracetam compound. The invention has the advantages that: the time of a reaction transition state is prolonged in an operation process, so that the reaction process is more sufficient, and the total yield is higher; the reaction process has mild conditions, so that decomposition of products and generation of byproducts are avoided; and purification adopts heating and refluxing processes, the solvent dose is small, and the purification time is short, so that decomposition of products and interfusion of other impurities are avoided and the product purity is higher. The whole preparation process is simple in operation, low in cost and easy to realize industrialized production, has good practicability, and can obtain good economic benefit and social effect.

The invention discloses a purifying method of a high-purity silica gel, belonging to the technical field of chemical-mechanical polishing. The purifying method is suitable for purifying silica sol in the chemical-mechanical polishing of a super-large-scale integrated circuit. The purifying method comprises the following steps: uniformly mixing regenerated strong acid cation exchange resin with strong base type anion exchange resin; adding silica sol to be purified in a container filled with strong acid and strong base mixed resin and controlling the temperature, stirring to enable the silica sol to be purified and the strong acid and strong base mixed resin to be mixed uniformly and realizing dynamic purification; and adding a composite chelating agent and a flocculating agent in the dynamic purifying process of the silica sol and controlling the pH value to 1-5 to obtain the purified silica sol. The content of metal ions in the purified silica sol is reduced to ppb level; and the obtained high-purity silica sol can meet the requirement of a substrate or a chip polishing solution for new generation of line width on the purity of the silica sol.

The invention discloses a biological purifying method for seafood bivalve shellfishes. The method comprises the following steps of: firstly, carrying out semi-fermentation on purple seaweed in a transparent way to obtain the purifying liquor containing purple seaweed colloid; and then, putting the bivalve shellfishes into a purifying tank added with the purifying liquor to purify for 1-3 days, therefore, the bivalve shellfishes can eat the purple seaweed colloid, the purple seaweed colloid can form a colloidal membrane in the digestive tract, the colloidal membrane not only can adsorb the impurities of mud, sand, heavy metal and the like in the digestive tract, and also can adsorb the microorganisms of colon bacillus and the like in the digestive tract, and the mud, the sand, the heavy metal and the microorganisms are discharged along with the purple seaweed colloid, thereby decreasing the content of the mud, the sand, the heavy metal and the microorganisms of the bivalve shellfishes, and achieving the food edible safety standard. In the method, as the biological purifying mode is adopted, the shellfishes can maintain the original freshness and taste; and as the purifying time is short, the relative fatness of the shellfishes is basically not affected, and the customer satisfaction degree and economical benefit of the shellfishes are not decreased.

The invention relates to a device for clearing up atmospheric haze. The device comprises a plasma generator, a gas collection cover and plasma output needle tubes, wherein a gas inlet is formed in the lower end of the plasma generator, a gas outlet is formed in the upper end of the plasma generator, the gas collection cover is buckled and arranged at the gas outlet, and a plurality of plasma output needle tubes are uniformly distributed and mounted on the curved surface on the outer edge of the gas collection cover. In the device provided by the invention, one square kilometer is defined as a region, a dust sampler in the region is used for detecting atmospheric quality constantly, and then the plasma generator is driven by a central control module to produce high-concentration plasma; furthermore, under the push of an axial flow fan, the plasma is diffused rapidly; and as the concentration of the plasma is very high, micro-particles in atmosphere in the region can be rapidly aggregated and settled, free radicals effectively treat harmful gas molecules, microbial cell membranes are damaged by an electrostatic effect, bacteria are effectively killed, and produced ozone also has the effect of killing the bacteria and virus.

The invention discloses a purification production process of glycerol. The process comprises the steps as follows: crude glycerol is sucked into a distillation still, direct steam is fed when the crude glycerol is heated to the temperature of 160+/-5 DEG C, and theintake amount of the direct steam is controlled to the extent that system vacuum is not lower than 0.08-0.095 MPa; glycerol steam obtained during distillation sequentially passes through a first condenser, a second condenser, a third condenser and a fourth condenser for cooling condensation to obtain distilled glycerol; the weight of the distilled glycerol is M, the distilled glycerol is input into a decoloration tank and heated to the temperature of 90+/-5 DEG C, then activated carbon is added, the weight of the activated carbon is M*(0.1%-0.5%), the distilled glycerol is fully stirred for 25-35 min, the temperature is kept for 0.5-1.5 h, the glycerol is obtained through filtration, and the filtration pressure is lower than 0.4 MPa. The purification production process of the glycerol is simple in process and thorough in purification process, and the obtained glycerol contains few impurities and is high in yield.

This invention is the purification method of silver electrolyte. Heating the silver electrolyte that need to be purified, the Ag can generate aqueous Ag (OH) 2- ions in solution, so most Pb, Cu, Bi, Sb deposit with the form of hydroxides to the bottom of electrolyte and removed. This invention can be applied during electrolyte and refining of Ag, and plays the pivot role in production of qualified silver. There is any agent needed during purification. The electrolyte can be reused.

The invention relates to a comprehensive test bench and test method for an air filter or a filter material. The device is composed of the following four systems: an aerosol generation system, a mixing system, a test system and an automation control system, wherein the aerosol generation system is composed of an aerosol generator, an electric butterfly valve, an electromagnetic flowmeter and a mini vacuum pump; the mixing system is composed of a test box, a low-pressure blower, a humidifier, a surface air cooler, a temperature/humidity sensor and an aerosol detector; the test system comprises a test box, an electric butterfly valve, a flowmeter, a clamp, slide glass, a mini vacuum pump and a high efficiency filter; and the automation control system is mainly connected with all of the electric butterfly valves, the low-pressure blower, the electromagnetic flowmeters and the mini vacuum pumps through a computer control terminal. The test bench provided by the invention is advanced and reasonable in design structure, realizes automation control, and can be easily and quickly operated; and the test bench can test the filter performance of a filter material and can also test the filter effect of a filter.

An organic electroluminescent package is composed of substrate, anode, cathode, hole transmission layer, electron transmission layer and a luminescent layer consisting of primary and secondary luminescent bodies.

The invention relates to the field of silica fume purification methods, in particular to a microwave-assisted silica fume acid leaching purification method. The method includes the following steps ofmagnetic separation, calcination quenching and microwave acid leaching. The method has the advantages that a traditional heating mode is replaced with a microwave heating technology, so that the heating speed is rapid, leaching efficiency is high, pollution is small, energy consumption is low, the purification process is simple, and purification time is short. By conducting washing magnetic separation on silica fume and quenching pretreatment in high-temperature calcinating water before microwave acid leaching, the microwave acid leaching purification efficiency can be further improved; the phase composition of the silica fume purified through the method is not changed, and the SiO2 content is larger than 95% after purification.

The invention discloses a method for separating and purifying orlistat. Pure orlistat is prepared through separation by using a high pressure preparative liquid chromatography system with bonded silica gel filler as a stationary phase and acetonitrile and methanol as a flowing phase. The method is simple in operation and short in purification time, and the purity of a target product reaches up to99% or above.

The invention discloses a method for separation and purification of bound total bile in a bile paste. The method is characterized by comprising the following steps of: (1) preparing a bile paste water solution from a raw material bile paste, and cooling; (2) preparing a bound total bile acid precipitate: adding 3-5mol/L diluted acid to the cooled bile paste water solution to regulate pH to 2-5, thus obtaining the bound total bile acid precipitate; and (3) washing the bound total bile acid precipitate, and discarding a washing liquid to obtain high-purity bound total bile acid. The method, on the basis of the researched property of the bound total bile acid which is insoluble in water in an acid environment, achieves the purpose of purification by removing water-soluble impurities through a water washing process, and has the advantages of being low in cost, short in duration, simple in process, high in purity, high in safety and the like, thus being convenient for industrial mass production.

The invention discloses synthesis and an application of copolymer of 1% of DVB crosslinking skeleton of chloromethylate polystyrene resin and 1,4-naphthoquinone. A 1,4-naphthoquinone substituted chloromethylate polystyrene copolymer is synthetized from 1% of DVB crosslinking chloromethylate polystyrene resin and 1,4-naphthoquinone as initial materials. The synthesis is low in reaction temperature, and short in reaction time (2-4 hours); the degree of substitution can be up to over 52%; the improvement of catalytic action of the polymer is facilitated; and the copolymer disclosed by the invention is applied to the degradation of waste water containing nitrogen. The results show that the microbial denitrification process and the microbial degradation azo-dye process are accelerated.

The invention relates to an integrated process for treating oily wastewater by microwave and ultrasonic wave collaborated with organic bentonite synthesis, which comprises the following steps of: adding untreated bentonite with grain size of 10-200 meshes and a cation surfactant into the oily wastewater, wherein the dosage of the cation surfactant is 20-120%CEC, the mass rate of solid to liquid of the bentonite and the oily wastewater is between 1: 1000 and 1: 10000; introducing the wastewater into a microwave reactor with power of 100-5000W and performing microwave radiation for 10 seconds to 1 minute; applying ultrasonic wave with frequency of 20-120KHz and power of 100-1200W; performing ultrasonication for 10 seconds to 5 minutes; purifying and stirring; stirring again for 2-3 minutes after ultrasonic processing; separating a solid phase and a liquid phase; and discharging the purified wastewater. By means of synergy of microwave and ultrasonic wave, time of treating the oily wastewater is shortened, and efficiency is improved.