120results about How to "Extended separation time" patented technology

Methods and apparatus for characterizing a polymer sample and in preferred embodiments, libraries of polymer samples, in a comprehensive, directly-coupled multi-dimensional liquid chromatography system are disclosed. The first and second dimensions are preferably high-performance liquid chromatography dimensions, such as for example, a first dimension adapted for determining composition (e.g. adapted for mobile-phase gradient elution chromatography, including reverse phase chromatography, adsorption chromatography and the like), and a second dimension adapted for determining molecular weight or particle size (e.g., adapted for size exclusion chromatography, including gel permeation chromatography).

Methods and apparatus for characterizing a polymer sample and in preferred embodiments, libraries of polymer samples, in a comprehensive, directly-coupled multi-dimensional liquid chromatography system are disclosed. The first and second dimensions are preferably high-performance liquid chromatography dimensions, such as for example, a first dimension adapted for determining composition (e.g. adapted for mobile-phase gradient elution chromatography, including reverse phase chromatography, adsorption chromatography and the like), and a second dimension adapted for determining molecular weight or particle size (e.g., adapted for size exclusion chromatography, including gel permeation chromatography).

A method and apparatus for two-dimensional gas chromatography (GC), including a valve having first and second positions (P1, and P2), and first through fourth sample flow paths (FP1-FP4). In P1, a first gas sample is collected from a first dimension GC column via FP1, a first pressure source and a first, second dimension GC column are connected via FP2, a second pressure source and a second, second dimension GC column are connected via FP3, and FP4 is disconnected. In P2, the first sample in FP1 is introduced to the second, second dimension GC column via FP1, with aid of the second pressure source, a second gas sample is collected from the first dimension GC column via FP2, the first pressure source and the first, second dimension GC column via FP4 are connected, and FP3 is disconnected.

The invention provides a multifunctional extraction pot. A lifting stirring mechanism is arranged at the top of a pot body, and comprises a stirring shaft, a stirring motor fixed on a stirring motor base, and a lifting motor fixed on a lifting motor base, wherein the output end of the lifting motor is connected with the stirring motor base by means of a screw rod and drives the stirring motor base to lift, the lower part of the pot body is provided with a filter net, the bottom of the pot body is provided with an ultrasonic vibration source, the bottom of the pot body is also provided with a breather pipe, the breather pipe extends into the pot body through an air inlet, the joint of the breather pipe and the air inlet is of a sealed structure, and the breather pipe is upwards provided with a plurality of air nozzles. A stirring paddle in the multifunctional extraction pot can move up and down, so that the stirring is more uniform, dead corners are avoided, the extraction speed is higher, and the effect is better.

Methods and apparatus for characterizing a polymer sample and in preferred embodiments, libraries of polymer samples, in a comprehensive, directly-coupled multi-dimensional liquid chromatography system are disclosed. The first and second dimensions are preferably high-performance liquid chromatography dimensions, such as for example, a first dimension adapted for determining composition (e.g. adapted for mobile-phase gradient elution chromatography, including reverse phase chromatography, adsorption chromatography and the like), and a second dimension adapted for determining molecular weight or particle size (e.g., adapted for size exclusion chromatography, including gel permeation chromatography).

The invention discloses a method for separating active ingredients from an aquilaria sinensis lamina by utilizing a high-speed counter current chromatography. The method comprises the following steps of: extracting the dried and smashed aquilaria sinensis lamina by virtue of a percolation extract method at the room temperature to obtain an aquilaria sinensis lamina extracting solution extractum; extracting the extracting solution extractum for 3-4 times by sequentially utilizing petroleum ether,and ethyl acetate, respectively decompressing and concentrating a petroleum ether extract liquor and an ethyl acetate extract liquor to extractums; then respectively separating the petroleum ether part extractum and the ethyl acetate part extractum to obtain an active ingredient A of 7,4'-dimethoxy-5-hydroxy flavone by utilizing the high-speed counter current chromatography; and then separating the ethyl acetate part extractum through high-speed countercurrent chromatography to obtain an active ingredient B of 3,5,7,3',4'-pentahydroxy-flavone and an active ingredient C of 3,5,7,4'-tetrahydroxy-flavone after coarsely separating the ethyl acetate part extractum by virtue of a column chromatography on silica gel. The active ingredients separated by the method are low in loss, high in separation speed, high in purity, stable and easy to apply.

The invention discloses a graphene oxide / titanium dioxide nano-needle composite material and a preparation method and application thereof. The composite material uses graphene oxide as a carrier, and titanium dioxide nano-needles are supported on the surface of the graphene oxide. The preparation method includes the steps that a graphene oxide dispersion solution is prepared, a mixed solution of isopropyl titanate is prepared, and the mixed solution and the graphene oxide dispersion solution are mixed to perform thermal solvent reaction. The graphene oxide / titanium dioxide nano-needle composite material is a composite material with a new structure, has the advantages of having a stable multi-stage nano structure, strong light capture capability, high photocatalytic efficiency and the like, can be used for degradation of methylene blue wastewater, and has the very high methylene blue degradation efficiency and a good photocatalytic degradation effect, and the preparation method of the material has the advantages that the varieties of the needed raw materials are few, and being simple in operation, low in cost and the like.

The invention discloses a device for the offline and online screening of cut tobacco from removed stem slivers of a cigarette maker. The device a left side wallboard and a right side wallboard, the left and right side wallboards are fixed on a baseboard respectively, an airflow channel fixedly arranged on the baseboard is arranged among the left and right side wallboards and the baseboard, the airflow channel has a segment of a continuous Z-shaped separation channel, the side surface of the upper half portion of the continuous Z-shaped separation channel is provided with a funnel communicated with the continuous Z-shaped separation channel, and the side surface of the lower half portion of the continuous Z-shaped separation channel is provided with a gas inlet communicated with the continuous Z-shaped separation channel; the airflow channel is provided with a cut tobacco rotation air-valve and a stem sliver rotation air-valve, and the tail end of the airflow channel is connected with a tapered connecting pipeline; the lower portion of the cut tobacco rotation air-valve is correspondingly provided with a cut tobacco collection tank movably connected to the left and right side wallboards, the lower portion of the cut tobacco collection tank is provided with a power transmission system fixed on one of the left and right side wallboards, and the cut tobacco rotation air-valve and the stem sliver rotation air-valve are respectively connected with the power transmission system; and the cut tobacco rotation air-valve, the stem sliver rotation air-valve and the funnel are fixed on the left and right side wallboards respectively.

The invention discloses a marine oily water disk aggregation and separation device, comprising a barrel body, wherein at least a first aggregation separator and a second aggregation separator are arranged in the barrel body; the first aggregation separator and the second aggregation separator are respectively positioned on the upper side and the lower side of a fluid guide hole plate; the periphery of the fluid guide hole plate are fixedly installed on the inner wall of the barrel body in a sealing manner; the middle position of the fluid guide hole plate is provided with a fluid guide throughhole; the top end of the first aggregation separator is provided with a top part cover plate, and a gap is left between the periphery of the top part cover plate and the inner wall of the barrel body; the bottom part of the second aggregation separator is provided with a fluid guide blind plate, and a gap is left between the periphery of the fluid guide blind plate and the inner wall of the barrel body; and the first aggregation separator and / or the second aggregation separator comprise / comprises a plurality of mutually superposed ripple separating discs. The separation device has the advantages of simple structure, convenient maintenance and manufacturing, and ideal oil-water separation effect, and is particularly applicable to marine oily water separation.

The invention relates to the technical field of separation and extraction of plant aromatic oil, in particular to a device for extracting the plant aromatic oil. The device comprises a steamer, a reboiler, a cooling device, an oil-water separator, a heating coil and a collector; a tower kettle is located at the bottom of a fractionating tower, the top of the steamer conveys oil-water vapor into the reboiler through a distillation air duct, and the heating coil for heating raw materials is arranged at the bottom of the steamer; the top of the cooling device is connected to the top of the reboiler through a guide pipe, the bottom of the cooling device is connected to the top of the oil-water separator through a guide pipe, the oil-water separator is provided with an oil outlet, and the oil outlet is connected with the collector; and the bottom of the oil-water separator is connected to the reboiler through a primary water return pipe, and the bottom of the tower kettle of the reboiler isconnected to the bottom of the steamer through a secondary water return pipe. The invention further discloses a process method for extracting the plant aromatic oil. By adopting the device and the process method, the oil yield is high, and energy consumption is low.

The embodiment of the invention relates to a fullerene carboxylic derivative modified photocatalyst / super-hydrophobic membrane composite material. The fullerene carboxylic derivative modified photocatalyst / super-hydrophobic membrane composite material comprises a super-hydrophobic membrane, the surface of the super-hydrophobic membrane is covered with a fullerene carboxylic derivative modified photocatalyst, the fullerene carboxylic derivative modified photocatalyst is prepared from at least one of a photocatalyst and a photocatalyst precursor and fullerene carboxylic derivatives. The composite material is novel in structure, excellent in performance and low in electron-hole recombination probability when adopted as the photocatalyst.

The invention discloses a method for separating and processing marine oily water and a processing device thereof. The method comprises the following steps: preheating treatment is carried out on bilgeoily water to 48-58 DEG C; oil drop aggregation and oil-water gravity separation are carried out to separate out waste oil and separate water; the separated water is filtered into filtered water by afilter-material filter device and then is sent to a separation process device; concentrated solution is recovered; and infiltration water is discharged outside cabin. The device for processing marineoily water of the invention comprises a heater, a gravity separator, a suction pump, a filter-material filter and a membrane processor communicated sequentially; the oily water inlet of the heater isconnected to a bilge oily water station; and the infiltration water outlet of the membrane processor is communicated with a sea valve by a puff pipe. The invention not only can realize separation process of high-density residuum oily water, but also can realize effective separation process of emulsion in oily water, so as to meet strict emission standard, thereby being widely used in separation process of bilge oily water.

The invention discloses a chemical slurry squeezing filtration system. The system comprises one belt filter press, one box filter, one pressure filter, one squeezing filter, one sterilization device,one sedimentation tank, one waste liquid pool, one liquid collection pool, four slag storage tanks, three buffer tanks, six feeding pumps, five circuit switches and fifteen valves. The squeezing filter comprises a waster spray pipe, a cylindrical housing, screw vanes, a driving motor and a gathering plate. The screw vanes are arranged at intervals.

The invention discloses an integrated gas-liquid-solid continuous separation device. The device comprises an upper sealing cover, an outer cylinder and a lower sealing cover, and the upper sealing cover, the outer cylinder and the lower sealing cover are connected into a whole through flanges. An upper layer, a middle layer and a lower layer are formed in an inner cavity of the outer cylinder, theupper layer is used for storing oil and gas after primary separation, the middle layer is used for storing oil after secondary separation, the lower layer is used for storing sand and water which arefinally separated, and all the layers are separated through perforated sieve plates and oil absorption felts. Mixed incoming liquid is accelerated to enter a cyclone for primary separation through atangential inlet and a spiral pipe type acceleration flow channel, and then is subjected to secondary separation by oleophylic and hydrophobic oil absorption felts, and continuous separation of a multiphase medium is realized. Multi-stage continuous separation is realized based on the combined action of cyclone separation, settling separation and membrane separation, and high-precision continuousseparation of oil-water-sand-gas four-phase media can be achieved in one device.

The invention provides an air guiding device applied to a van trailer. The air guiding device comprises a tail door guiding device installed on a rear compartment door of the van trailer. The tail door guiding device comprises a guiding device body I and a guiding device body II. An included angle is formed between the upper end face of the guiding device body I and the top face of the van trailer. An included angle is formed between the outer side face of the guiding device body II and the side face of the van trailer. The air guiding device further comprises rear lower side guiding devices,side face guiding devices and front lower portion guiding devices, all of which are installed on the lower side of a compartment of the van trailer. The rear lower side guiding devices are symmetrically arranged on the left side and the right side of the rear portion of a trailer frame of the van trailer, the side face guiding devices are symmetrically arranged on the left side and the right sideof the middle portion of the trailer frame of the van trailer, and the front lower portion guiding devices are symmetrically arranged on the left side and the right side of the front portion of the trailer frame of the van trailer. The air guiding device is reasonable in design, surrounding air flows of the van trailer can be orientated and guided in sequence, the possibility that turbulence cyclones and flow separation are generated around the van trailer through the air flows is reduced, air resistance is reduced, and the air guiding device is low in carbon, environment-friendly and worthy of popularization.

The invention relates to a preparation method of 6-gingerol. The preparation method comprises the following steps: (1), pretreating: adding an ethanol solution into ginger resin, dissolving, and thenadding water to adjust the volume fraction of ethanol to 50-60% while homogenizing to obtain a ginger resin-ethanol mixed solution; (2), cooling and removing impurities: cooling the ginger resin-ethanol mixed solution in the step (1) till a precipitate is separated out, then raising the temperature to the room temperature, waiting till the precipitate is melted into an oily substance, and then separating to remove the oily substance to obtain an ethanol solution phase; (3), performing liquid-liquid extraction: adjusting the volume fraction of the ethanol in the ethanol solution phase in the step (2) to 70-90%, performing the liquid-liquid extraction by using n-hexane, collecting an ethanol phase, concentrating and removing water to obtain crude 6-gingerol. The content of the 6-gingerol inthe crude 6-gingerol prepared by the preparation method is relatively high, so that obtainment of the high-purity 6-gingerol through purification is facilitated, the yield of the 6-gingerol is increased and the preparation cost is reduced.

The invention discloses a double-liquid-well-type cleaning machine with an air floatation separation device. The double-liquid-well-type cleaning machine comprises an alkali water channel, an alkali water spraying pump, a clean water spraying pump, a clean water channel, a switching valve, an air compressor, an oil skimmer, a spraying chamber and a bubble generating pipe, wherein the spraying chamber is located above the alkali water channel and the clean water channel, the alkali water spraying pump is arranged on the side edge of the alkali water channel, the clean water spraying pump is arranged on the side edge of the clean water channel, the switching valve controls sprayed alkali water to flow back to the alkali water channel and controls sprayed clean water to flow back to the clean water channel, and the oil skimmer is located above the alkali water channel. According to the double-liquid-well-type cleaning machine with the air floatation separation device, the bubble generating pipe is arranged inside the alkali water channel, a plurality of small holes are drilled in the bubble generating pipe, the bubble generating pipe is connected with the air compressor through a pipeline, air passes through the small holes in the bubble generating pipe to form tiny bubbles which enter the alkali water in the alkali water channel, the oil-water separating rate of alkali water with oil is improved, the oil-water separating time is shortened, and the cleaning effect and running efficiency of the oil cleaning machine are remarkably improved.

The invention discloses a portable three-phase settling disk centrifuge internal flow passage structure. A liquid inlet-outlet diverter valve and a heavy-fluid centripetal pump are connected in a sealing assembling way; and a mixed liquor passes through a liquid inlet pipe in the middle of the heavy-fluid centripetal pump so as to enter a liquid inlet chamber between a gravity disk and a disk fixed plate. The disk fixed plate is arranged at the top end of a settling disk area; the gravity disk is arranged above the disk fixed plate; the mixed liquor enters a rotary drum through the chamber; aheavy-fluid runner is arranged between the gravity disk and the centrifuge rotary drum; a heavy fluid enters a heavy-fluid jet pipe through the runner, is then extracted into the liquid inlet-outlet diverter valve through the heavy-fluid centripetal pump, and is discharged through a heavy-fluid discharge runner; a light fluid outlet runner is located on the lowest part of the settling disk area located near the rotation center of the centrifuge rotary drum; and no falling hole is formed in a disk of the settling disk area. According to the portable three-phase settling disk centrifuge internalflow passage structure provided by the invention, the devices such as the falling hole, a falling baffle plate and a flow guiding plate are omitted, so that the occurrence of the phenomenon that fiber substances frequently mixed in the mixed liquor cause the blockage of the falling hole, the falling baffle plate and the flow guiding plate can be avoided.

The invention discloses a greasy dirt-resistant oil-water separator. The greasy dirt-resistant oil-water separator comprises a tank, the top of the tank is provided with a light oil outlet and a backwashing air inlet for compressed air connection and the bottom of the tank is provided with a heavy oil discharge outlet and a sewage draining outlet. The greasy dirt-resistant oil-water separator also comprises an inlet water separator, an outlet water separator below the inlet water separator, a cylindrical oil-water separation filter core and an outlet water diversion mechanism. The inlet water separator and the outlet water separator are fixed in the tank. The side wall of the tank is provided with a water inlet and a water outlet. The water inlet and the inlet water separator are connected. The water outlet is connected to the outlet water separator. The cylindrical oil-water separation filter core is fixed to the inlet water separator and is communicated with the inlet water separator. The outlet water diversion mechanism is fixed to the bottom of the outlet water separator and is communicated with the outlet water separator. The greasy dirt-resistant oil-water separator has the advantages of small land occupation area, safety, reliability, simple processes, low operation power consumption, wide application range, good dirt blocking resistance, cleaning easiness, long service life, good oil-water separation effects and high separation efficiency.

The invention belongs to the technical field of agricultural machines, concretely relating to a paddy rice threshing apparatus. The problem that uniaxial and biaxial threshing cylinder structures failto meet the requirement of agricultural production is resolved. In order to resolve the technical problem, the invention puts forward the paddy rice threshing apparatus comprising crushing devices, acleaning sieve board, a feeding hopper, a winnower, a fan, a frame and a whirlwind separating cylinder. The paddy rice threshing apparatus has high threshing efficiency.

The invention discloses a filter press system with a dewatering wheel system. The filter press system comprises one belt filter press, one box filter, one pressure filter, one squeezing filter, one sterilization device, one sedimentation tank, one waste liquid pool, one liquid collection pool, four slag storage tanks, three buffer tanks, six feeding pumps, five circuit switches and fifteen valves.The belt filter press comprises a frame, a gravity separation zone, a squeezing separation zone and a liquid guide device. The squeezing separation zone comprises a second driving motor, a third driving motor, a pre-pressing device, an upper pressure filtering belt, a lower pressure filtering belt, a tensioning roller, a discharge roller, a dewatering roller system, a carrier roller, a second deviation adjustment device and a third deviation adjustment device. The dewatering roller system comprises five dewatering rollers respectively arranged in the upper pressure filtering belt and the lower pressure filtering belt.

The invention discloses a nitrogen-containing organic wastewater electrochemical treatment reactor and a method for enabling electroflocculation sludge to achieve a magnetic separation performance. Onthe basis that the method removes a pollutant in the nitrogen-containing organic wastewater at the same time, a strongly magnetic iron compound is formed in the traditional electroflocculation sludge, so that the electroflocculation sludge achieves the magnetic performance. The core of the method is to introduce two anodes, one is an iron anode, the other is a Ti / RuO2 anode, the iron anode and the Ti / RuO2 anode work alternatively to create a transient-state oxidation-deoxidation environment for a system, and the accumulation of the strongly magnetic Fe3O4 and gamma-Fe2O3 is promoted. Based onthe method, the invention further provides the electrochemical reactor, the electrochemical reactor is widely suitable for removing total nitrogen and COD (Chemical Oxygen Demand) in the treatment ofthe nitrogen-containing organic wastewater (like domestic wastewater, industrial wastewater, landfill leachate and the like) containing an electroflocculation treatment unit, meanwhile, the electroflocculation sludge becomes magnetic, and the rapid magnetic separation of the sludge is achieved.

The invention belongs to the technical field of forest chemical manufacture, and particularly relates to a rosin production process which includes the steps: feeding pine gum into a dissolving pan anddissolving the pine gum; washing dissolved gum liquid; clarifying washed upper gum liquid; recycling gum liquid from the clarified gum liquid and slag water to obtain good gum liquid and then filtering the good gum liquid; feeding the filtered gum liquid into a pinene pan and distilling the gum liquid in a distillation tower; recycling high-quality oil and heavy oil; distilling a non-evaporatingportion to serve as crude rosin; collecting the crude rosin into a rosin bed; collecting volatilized hot rosin; naturally cooling the non-evaporating portion to obtain rosin. The rosin production process has the advantages of pine gum dissolving completeness, gum liquid washing completeness and remarkable gum liquid recycling effect. In addition, the rosin production process can further improve product quality, increase the softening point of a product, reduce the unsaponifiable matter content of the rosin and reduce ash content.

The invention discloses a method for simultaneously separating and determining 12 sulfonamides in plasma by adopting ultra performance convergence chromatography (UPC2). The method comprises the following steps: adding acetonitrile into a plasma sample, performing vortex mixing, centrifuging, filtering the supernatant, determining by adopting the UPC2 method, adopting an Acquity UPC2TM BEH chromatographic column, taking CO2 and methanol as mobile phases, and performing gradient elution, wherein the temperature of a column oven is 40 DEG C, and the system back pressure is 2100psi. According tothe method disclosed by the invention, baseline separation of the 12 sulfonamides is realized within 6 minutes, the lowest limit of quantitation is 0.5 microg / mL, and the recovery rate is 80.53-103.33%. The method is simple and convenient to operate, accurate, has time-saving and environmental-friendly effects and is applicable to simultaneous detection of multiple sulfonamides in the plasma.

The invention provides a disc stack centrifuge provided with a single centripetal pump with a spiral acceleration function and disc stack centrifugal equipment provided with the single centripetal pump. The disc stack centrifuge is characterized in that a liquid inlet and outlet cover body is used for introducing mixed liquid and discharging light liquid; a spiral guide mechanism is arranged at the lower part of the liquid inlet and outlet cover body; the spiral guide mechanism comprises a fixing cover, a hollow column is arranged in the center of the fixing cover, a mixed liquid inlet pipe is inserted into the hollow column, at least two sets of openings are formed in the side wall of the end of the hollow column, and threaded grooves are formed in the positions, corresponding to the openings, of the outer wall of the hollow column; and the bottom of the hollow column is communicated with a guide disc. In the internal flow channel structure of the disc stack centrifuge, after entering the liquid inlet channel, mixed liquid is immediately accelerated by a screw pump in the hollow column to be pushed into a bottom liquid inlet channel and is immediately accelerated to the same rotating speed of the centrifuge, the separation effect is accelerated, and the defect that liquid entering a rotary drum cannot be completely accelerated to the rotating speed of the centrifuge through a traditional centrifuge with a single centripetal pump is overcome.

The invention provides a filling valve. The filling valve mainly comprises a valve body, wherein the valve body is provided with a liquid drain end, a liquid drain channel is formed in the liquid drain end, a liquid-leakage-preventing assembly is mounted at the liquid drain end and comprises a tightening sleeve connected with the valve body, a liquid drain part is arranged at one end, far away from the valve body, of the tightening sleeve, a plurality of drain holes are formed in the liquid drain part, the liquid drain part drains a liquid via the liquid drain holes, a mounting hole is formed in the tightening sleeve and between the liquid drain part of the tightening sleeve and the liquid drain end of the valve body, the liquid drain channel, the mounting hole and the drain holes are sequentially communicated, multiple layers of foam-removing grids with meshes are arranged in the mounting hole, the foam-removing grids are sequentially arranged in the extension direction from the liquid drain end to the liquid drain part, and a gap exists between every two adjacent layers of foam-removing grids. With the adoption of the filling valve, on one hand, the problem of material splashing can be solved thoroughly and the better foam removing effect can be realized; on the other hand, the cost can be reduced and the filling efficiency can be further improved.