39results about How to "Low critical pressure" patented technology

The invention relates to a method for extracting grease from oil material, in particular to a method for extracting peony seed oil from peony seeds. The method for extracting peony seed oil from peony seeds is characterized by comprising the following steps of: (1) firstly, drying the peony seeds until the water content is smaller than 13%, and crushing to 40-80 meshes by using a crusher; (2) delivering the dried and crushed peony seeds into an extracting kettle, pumping the vacuum to the pressure below 1*10<4>Pa, and evacuating air in the extracting kettle; (3) then, pumping a tetrafluoroethane solution into the extracting kettle by using a plunger pump until the peony seeds are emerged under the liquid level under the observation of a sight glass; (4) stirring, and extracting, wherein the extraction pressure is 1.0-1.2Mpa, the temperature range is 40-50 DEG C, and the extraction time is 30-45 min each time; (5) depressurizing and raising temperature to evaporate and separate in a separating kettle, wherein the separation pressure range is 0.5-0.1MPa, and the temperature range is 45-50 DEG C; (6) after subcritical extraction, centrifugally separating and filtering the crude oil through a high-speed centrifuge to obtain the final peony seed oil.

The invention relates to a method for extracting grease from oil material, in particular to a method for extracting prickly ash seed oil from prickly ash seeds. The method for extracting prickly ash seed oil from prickly ash seeds is characterized by comprising the following steps of: (1) firstly, drying the prickly ash seeds until the water content is smaller than 13%, and crushing to 40-80 meshes by using a crusher; (2) delivering the dried and crushed prickly ash seeds into an extracting kettle, pumping the vacuum to the pressure below 1*10<4>Pa, and evacuating air in the extracting kettle; (3) then, pumping a tetrafluoroethane solution into the extracting kettle by using a plunger pump until the prickly ash seeds are emerged under the liquid level under the observation of a sight glass; (4) stirring, and extracting, wherein the extraction pressure is 1.0-1.2Mpa, the temperature range is 40-50 DEG C, and the extraction time is 30-45 min each time; (5) depressurizing and raising temperature to evaporate and separate in a separating kettle, wherein the separation pressure range is 0.5-0.1MPa, and the temperature range is 45-50 DEG C; and (6) after subcritical extraction, centrifugally separating and filtering the crude oil through a high-speed centrifuge to obtain the final prickly ash seed oil.

The invention relates to a method for extracting grease from oil seeds, in particular to a method for extracting and recycling olive pomace oil from olive pomace. The method is characterized by comprising the following steps of: (1) drying the olive pomace until the water content is less than 13%, and crushing to 40-80 meshes by a crusher; (2) putting the dried and crushed olive pomace into an extraction kettle, vacuumizing until the pressure is less than 1*10<4>pa, and discharging air in the extraction kettle; (3) injecting a tetrafluoroethane solution into the extraction kettle by a plunger pump until the level of the solution submerges raw materials of the olive pomace by using a sight glass for observation; (4) starting stirring and extracting, wherein the extraction pressure is 1.0-1.2Mpa, the temperature is 40-50 DEG C, and the extraction time is 45min; (5) decompressing, raising temperature, evaporating and separating in a separation kettle, wherein the extraction pressure is 0.1-0.5Mpa, and the temperature is 40-50 DEG C; and (6) after subcritical extraction, centrifuging to separate crude oil by a high-speed centrifuge, and filtering to obtain the final olive pomace oil.

The invention relates to a method for removing residual pesticide in ginseng, in particular to a method that the raw material, namely, the ginseng is taken and charged into a high pressure extraction kettle, after air in the system is emitted, a solvent pump is opened, and extraction solvent, namely, propane is poured into the sealed extraction kettle, and the circulation of the propane and the raw material, the ginseng has the mass proportion of 1: 1 to 10.0: l (preferably 3: 1 to 9: 1); the extraction time is 30 to 180 min, and the extraction pressure is 4.0-15.0 MPa; the extract temperature is 40 to 100 DEG C; after the extraction is finished, the obtained residue is the ginseng after the residual pesticide is removed. The method provides an effective way for removing the residual organic pesticide in the ginseng, has wide raw material selection range, and has temperate operating condition, thereby being suitable for industrialized production.

The invention relates to a method of extracting bay leaf oil from bay leaves with subcritical n-butane fluid. The method includes smashing, adding into a tank, dipping with an n-butane solvent, extracting, distilling, and the like. Extraction temperature and pressure can be accurately controlled by utilization of a subcritical extraction device. The method is high in extraction efficiency, low in device manufacturing cost, high in raw material treating amount, simple in process, low in production cost and free of solvent residue. A whole process of the method is performed at low temperature under an oxygen-free state. Extraction and separation are performed at the same time. The extraction speed is high. Recovery and reutilization of the solvent can be achieved.

The invention discloses an on-board battery fire extinguishing structure using a hybrid fire extinguishing agent. The on-board battery fire extinguishing structure comprises a first fire extinguishing tank mounted outside a battery case, on-board batteries are fixed in the battery case, a spraying pipe of the first fire extinguishing tank is connected into the battery case, and the first fire extinguishing tank is filled with the fire extinguishing agent which is prepared from, by volume, 3%-40% of liquid-state hexafluoropropane, 3%-40% of liquid-state heptafluoropropane and the balance of liquid-state carbon dioxide through mixing. The on-board battery fire extinguishing structure has the advantages of physical fire extinguishing and chemical fire extinguishing.

The invention provides a quaternary mixed refrigerant and relates to the technical field of refrigerants. The quaternary mixed refrigerant comprises propane, dimethyl ether, propylene and trifluoroiodomethane. According to the refrigerant provided by the invention, the propane, the propylene, the dimethyl ether and the trifluoroiodomethane are all compounds which do not contain chlorine atoms, sothat the ozone layer is not damaged. The refrigerant does not cause the greenhouse effect, can meet requirements of environment protection, and thus is a good choice for replacing an existing dichlorofluoromethane refrigerant.

The invention relates to a new technique of the oil removal of oilfield-produced water, which utilizes a solvent extraction technology. The novel technique is invented to quickly condense the micro oil drop of dispersed oil, emulsible oil and soluble oil in the water into the oil drop with a larger dimension, thus realizing quick and high-effective oil removing from the oilfield-produced water. The novel technique relates to the application of supercritical fluid extraction technology which adopts liquefied natural gas (LNG) as the solvent. The whole technique process mainly comprises units of a primary separator, a natural gas purification and liquefaction system, a second stage separator, an extraction reactor, a hydrocyclone, etc. The invention has the advantages that: the oil removal effect is good, the detention time of each unit is short, the solvent can be recycled and repeatedly used and the floor area of the device is small, which is especially applicable to ocean or sea beach oil-production platform. The technique is applicable to the oil removal of effluent from heavy oil produced water and polymer flooding produced water.

The invention discloses a method for modifying microporous membrane wettability by utilizing a low pressure-forced Cassie state effect. The method comprises the step of: inducing a liquid drop on a microporous membrane with the aperture of 10-100 mu m to be changed from a Wenzel state to a Cassie state at the room temperature by utilizing relative pressure of 100-300 Pa, so as to modify interfacial wettability property of the microporous membrane. Before the implementation of the above-mentioned step, preferably, surface finish is performed on the microporous membrane by adopting a surface modification technology. Under a same micropore structure, the larger the contact angle of the liquid drop on the surface of the modified microporous membrane is, the smaller the critical pressure of the forced Cassie state of the microporous membrane is. The invention provides a novel approach for designing a superhydrophobic surface. Compared with the common superhydrophobic surface, the microporous membrane has the advantages of reducing the degree of dependence on a low surface energy substance and a surface micro-nano fine structure, and decreasing the probability of failure of the surface superhydrophobic function when external pressure and the surface fine structure are damaged, therefore wide application prospect is obtained.

A solar air conditioner consists of tubular energy collectors, an energy-storing part, an automatic light-electric inter-compensator, an exchanger, one-way valves, solenoid three-way valves, a condenser, a distiller, a pressure-reducing throttle valve, an enhancer, pressure-regulating valves, a relay console, a blower, and conveying and conducting pipes. Its outdoor unit consists of the tubular energy collectors and energy storing part with the exchanger and the automatic light-electric inter-compensator inside. The exchanger is connected with the condenser and then enhancer via one-way valves and solenoid three-way valves and pressure-regulating valves. The distiller with the relay console and blower is connected with the condenser and enhancer at both ends of the distiller respectively. The said inter-compensator is connected with relay console via electric wires. The conveying and conducting pipes make connection of all parts. It has a simple structure, saves energy, runs in a closed loop at low cost stably and durably, without media loss and noise, and is easy to be used widely.

The invention discloses a method for preparing nutmeg oleoresin by using a subcritical fluid. The method comprises the following steps: pretreatment, vacuum-pumping, extraction, desolvation, product collection and residue processing. The method for preparing the nutmeg oleoresin by using the subcritical fluid can be carried out under medium temperature condition, an active substance in an oil material cannot be destroyed, so that local flavor of nutmeg can be completely kept, quality of the nutmeg is good, oil extraction rate is high, and problems of loss of the nutmeg oleoresin and oxidative deterioration due to high temperature can be solved. The method uses unique dissolving characteristic of butane to effective components of the nutmeg oleoresin, performs extraction and separation for the nutmeg oleoresin, realizes solvent recycling, and increases utilization rate of the raw material; at the same time, butane has low boiling point, strong dissolvability and low critical pressure, technological condition is mild, production equipment requirement is reduced, safety performance of the production equipment is enhanced, and the method is suitable for large scale production.

The invention belongs to the field of refrigerants, and particularly relates to a refrigerant replacing R-410A and a preparation method thereof. The refrigerant is formed by fully mixing the following raw materials including, by weight, 44-54 parts of propylene, 10-20 parts of iodotrifluoromethane and 30-40 parts of ethyl fluoride. The preparation method of the refrigerant comprises the following steps that S1, the purity of the raw materials are detected to ensure that the purity reaches the refrigerant-grade standard; S2, a cleaning reagent is used for cleaning a pressure vessel; S3, the cleaned pressure vessel is vacuumed; S4, the raw materials which reach the stand are added into the vacuumed pressure vessel according to the proportion of parts by weight and mixed to obtain a mixture; and S5, the mixture in the S4 is sampled, and whether all components in a sample meet the corresponding proportion of the parts by weight or not is detected. By adoption of the refrigerant replacing the R-410A, all original refrigeration equipment do not need to be replaced, the improvement cost is greatly reduced, and the refrigerant is good in energy saving effect and saves energy by 20-25% compared with the original refrigerant R-410A.

The invention relates to the technical field of power machinery, and discloses a novel power cycle mixed working medium taking CO2 as a main component, as well as a system and a method thereof. The mixed working medium is prepared by physically mixing CO2 with one of propane, cyclopropane, propyne, butane, iso-butane, cis-butene, trans-butene and cyclopentane at certain proportion. The mixed working medium takes CO2 as a main component and one of propane, cyclopropane, propyne, butane, iso-butane, cis-butene, trans-butene and cyclopentane as a second component, so that the mixed working medium can be condensed by the conventional cooling water, and the working medium also has lower flammability. When being used for exchanging heat with a heat source fluid, the mixed working medium has better temperature matching, and the cycling has higher efficiency.

The invention relates to a method for extracting grease from oil material, in particular to a method for extracting tomato seed oil from tomato seeds. The method for extracting tomato seed oil from tomato seeds is characterized by comprising the following steps of: (1) firstly, drying the tomato seeds until the water content is smaller than 13%, and crushing to 40-80 meshes by using a crusher; (2) delivering the dried and crushed tomato seeds into an extracting kettle, pumping the vacuum to the pressure below to 1*10<4>Pa, and evacuating air in the extracting kettle; (3) then, pumping a tetrafluoroethane solution into the extracting kettle by using a plunger pump until the tomato seeds are emerged under the liquid level under the observation of a sight glass; (4) stirring, and extracting, wherein the extraction pressure is 1.0-1.2Mpa, the temperature range is 40-45DEG C, and the extraction time is 40-50min each time; (5) depressurizing and raising temperature to evaporate and separate in a separating kettle, wherein the separation pressure range is 0.5-0.1MPa, and the temperature range is 45-50DEG C; and (6) after subcritical extraction, centrifugally separating and filtering the crude oil through a high-speed centrifuge to obtain the final tomato seed oil.

An air conditioner of indirect solar energy is composed of light pipe receiver , energy accumulator , exchanger , four - way solenoid valve , condenser , evaporator , booster , pressure release gate valve , pressure release and charging valve , fan , relay control panel and transfusion pipe . It features connecting light pipe receiver to energy accumulator in parallel for forming energy receiver outdoor, setting exchanger connected respectively with condenser and four - way solenoid valve at top and bottom in energy accumulator and connecting evaporator to condenser and four - way solenoid valve separately through transfusion pipe.

The invention discloses an explosion-proof fuel tank for a parallel-connection multi-chamber motorcycle. According to the scheme, the explosion-proof fuel tank comprises a tank body, wherein a fuel tank cap is arranged on the tank body; a closed cavity is formed in the tank body; a spacing piece is mounted on the wall surface of the cavity, and critical pressure of the spacing piece is lower than critical pressure when the cavity wall is broken; a safety valve is further mounted on the wall surface of the cavity, and critical pressure of the safety valve is lower than that of the spacing piece; a plurality of partition boards are arranged in the cavity and divide the cavity into a plurality of chambers; bursting discs are arranged on the partition boards, critical pressure of each bursting disc is higher than critical pressure of the safety valve and lower than critical pressure when the cavity wall is broken; the cavity is further provided with a through hole communicated with outside, a sealing cover is mounted at the through hole, and the safety valve, the through hole and the spacing piece are arranged on the wall surface of the same chamber. According to the explosion-proof fuel tank for the parallel-connection multi-chamber motorcycle, the tank body can be repeatedly subjected to pressure reduction by the aid of the cavity.

The invention discloses a battery fire extinguisher achieving fire extinguishment with hexafluoropropane and carbon dioxide. The battery fire extinguisher comprises a fire extinguishment bottle installed outside a battery box, wherein a vehicle-mounted battery is fixedly arranged in the battery box, a spray pipe of the fire extinguishment bottle is arranged in the battery box, the fire extinguishment bottle is filled with fire extinguishment materials which are intermixtures formed by the hexafluoropropane and the carbon dioxide, both the hexafluoropropane and the carbon dioxide are of a liquid state, the hexafluoropropane accounts for 15%-18% of the intermixtures (by volume), and the balance is the carbon dioxide. The battery fire extinguisher has the advantages of being capable of conducting physical fire extinguishment and chemical fire extinguishment simultaneously.

The invention belongs to the field of plant grease extraction and particularly relates to a method for extracting shiny-leaf yellowhorn oil from shiny-leaved yellowhorn seeds by adopting a supercritical tetrafluoroethane fluid. The method for extracting shiny-leaf yellowhorn oil from shiny-leaved yellowhorn seeds comprises the following steps: crushing the shiny-leaf yellowhorn seed raw material to 40-60 meshes, and repeatedly extracting three times at 30-40 DEG C and 1.0-1.2MPa, wherein the extraction time every time is 30-40 minutes; pumping negative pressure by using a diagram compressor at the separating temperature of 45-55 DEG C and gradually reducing the pressure to 5*10<-2>Pa, and repeatedly separating three times, 20-30 minutes per time; and finally, carrying out centrifugal separation and filtration on the crude shiny-leaf yellowhorn oil by a high speed refrigerated centrifuge to obtain a shiny-leaf yellowhorn oil product. Experiments verify that the yield of the shiny-leaf yellowhorn oil under the above process conditions is 31.8%, and the product quality is good.

The invention relates to the technical field of power machinery, and discloses a novel power cycle mixed working medium taking CO2 as a main component, as well as a system and a method thereof. The mixed working medium is prepared by physically mixing CO2 with one of propane, cyclopropane, propyne, butane, iso-butane, cis-butene, trans-butene and cyclopentane at certain proportion. The mixed working medium takes CO2 as a main component and one of propane, cyclopropane, propyne, butane, iso-butane, cis-butene, trans-butene and cyclopentane as a second component, so that the mixed working medium can be condensed by the conventional cooling water, and the working medium also has lower flammability. When being used for exchanging heat with a heat source fluid, the mixed working medium has better temperature matching, and the cycling has higher efficiency.

A solar air conditioner consists of tubular energy collectors, an energy-storing part, an automatic light-electric inter-compensator, an exchanger, one-way valves, solenoid three-way valves, a condenser, a distiller, a pressure-reducing throttle valve, an enhancer, pressure-regulating valves, a relay console, a blower, and conveying and conducting pipes. Its outdoor unit consists of the tubular energy collectors and energy storing part with the exchanger and the automatic light-electric inter-compensator inside. The exchanger is connected with the condenser and then enhancer via one-way valves and solenoid three-way valves and pressure-regulating valves. The distiller with the relay console and blower is connected with the condenser and enhancer at both ends of the distiller respectively. The said inter-compensator is connected with relay console via electric wires. The conveying and conducting pipes make connection of all parts. It has a simple structure, saves energy, runs in a closed loop at low cost stably and durably, without media loss and noise, and is easy to be used widely.

The invention provides a flame-retardant high-speed rail seat cover, comprising: a back pocket and a base pocket connected to the back pocket; both the back pocket and the base pocket are made of composite fabrics, the composite fabric is made of composite fibers Polyester yarn and flame-retardant polyester thread are woven at a ratio of 1:2:3; the composite fiber includes a flame-retardant fiber main part and an outer layer arranged outside the flame-retardant fiber main part; the flame-retardant fiber main part includes a pair of side-by-side Flame-retardant polyester thread and a pair of sleeves, a tapered metal fixing sheet is attached to the middle of a pair of flame-retardant polyester threads, and the left and right sides of the metal fixing sheet have curved surfaces for fixing the flame-retardant polyester thread; the middle part of the metal fixing sheet The upper and lower ends are equipped with piercing parts; a pair of sleeves are respectively facing the upper and lower ends of the puncture parts, and the two sides of the sleeves touch the flame-retardant polyester thread; the sleeves are equipped with pressurized gas fire extinguishing agent; the outer layer and the sleeve are both Made of flame retardant thermoplastic resin. The invention solves the defect that the flame retardant effect of the existing high-speed rail seat cover is poor.

The invention provides a flame retardant high iron seat cover. The cover comprises a backrest pocket and a base pocket connected with the backrest pocket; the backrest pocket and the base pocket are made from a composite fabric, and the composite fabric is formed by weaving a composite fiber, a polyester yarn and flame retardant polyester threads according to a ratio of 1:2:3; the composite fibercomprises a flame retardant fiber main part and an outer surface layer disposed outside the flame retardant fiber main part; the flame retardant fiber main part comprises a pair of side-by-side arranged flame retardant polyester threads and a pair of sleeves, the middles of the pair of flame retardant polyester threads are adhered to tapered metal fixing pieces, and the left and right sides of themetal fixing pieces are provided with arc curved surfaces for fixing the flame retardant polyester threads; the upper and lower ends of the middle of a metal fixing piece are respectively provided with puncture portions; the pair of sleeves respectively directly face the puncture portions of the upper and lower ends, and the two sides of the sleeves are in contact with the flame retardant polyester threads; the sleeves are filled with a pressurized gas fire extinguishing agent; the outer surface layer and the sleeves are both made from a flame retardant thermoplastic resin. The cover solves the problem that an existing high iron seat cover has a poor flame retarding effect.

The invention discloses a one-way valve for an oral irrigator water pump. The one-way valve comprises a valve cover, a connecting port and a valve body assembly, wherein the valve body assembly comprises a water inlet frame body and a water outlet frame body, a water inlet tongue piece is connected to the inner side of the water inlet frame body, a water outlet tongue piece is connected to the inner side of the water outlet frame body, an outlet of a water inlet pipe is located in the middle of one side of the water inlet tongue piece, an inlet of a water outlet pipe is located in the middle of one side of the water outlet tongue piece, a pump cavity water inlet is formed in the portion, on the other side of the water inlet tongue piece, of the connecting port, a pump cavity water outlet is formed in the portion, on the other side of the water outlet tongue piece, of the connecting port, a water outlet groove is formed in the bottom plane of a pit, on one side of the water outlet tongue piece, of the valve cover, and a water inlet groove is formed in the bottom plane of a pit, on the other side of the water inlet tongue piece, of the connecting port. According to the one-way valvefor the oral irrigator water pump, the opening and closing speed is relatively high, the performance is stable, the vibration noise is low, the cost is low, and the service life is long.

The invention discloses a battery fire extinguisher achieving fire extinguishment with hexafluoropropane and carbon dioxide. The battery fire extinguisher comprises a fire extinguishment bottle installed outside a battery box, wherein a vehicle-mounted battery is fixedly arranged in the battery box, a spray pipe of the fire extinguishment bottle is arranged in the battery box, the fire extinguishment bottle is filled with fire extinguishment materials which are intermixtures formed by the hexafluoropropane and the carbon dioxide, both the hexafluoropropane and the carbon dioxide are of a liquid state, the hexafluoropropane accounts for 15%-18% of the intermixtures (by volume), and the balance is the carbon dioxide. The battery fire extinguisher has the advantages of being capable of conducting physical fire extinguishment and chemical fire extinguishment simultaneously.

The invention relates to a method for extracting oil from oil plants, in particular to a method for extracting pepper seed oil from pepper seeds. A method for extracting Zanthoxylum bungeanum oil from Zanthoxylum bungeanum, the main features of which include the following steps: (1) first drying the Zanthoxylum bungeanum seeds until the water content is less than 13%, and pulverizing them to 40-80 meshes by a pulverizer; (2) drying Put the pulverized Zanthoxylum bungeanum seeds into the extraction kettle, vacuum down to below 1×104pa, and discharge the air in the extraction kettle; (3) Then use a plunger pump to inject tetrafluoroethane solution into the extraction kettle, and observe the liquid through the sight glass. (4) start stirring and start extraction, the extraction pressure range is 1.0-1.2Mpa, the temperature range is 40-50°C, each extraction time is 30-45min, a total of 3 extractions; (5) then Evaporation separation is carried out in the separation tank under reduced pressure and temperature rise. The separation pressure range is 0.5-0.1Mpa, the temperature range is 40-50°C, and the separation time is 15-25min; (6) After subcritical extraction, the crude oil is centrifuged in a high-speed centrifuge Separate and filter to obtain the final pepper seed oil.

The invention relates to a vertical titanium alloy micro-channel inner spiral tube-sheet heat exchanger, and belongs to the technical field of energy. The invention discloses a vertical titanium alloy micro-channel plate heat exchanger with supercritical nitrogen and nitrogen as circulating heat exchange working media. Heat exchange plates of the heat exchanger can be stacked at will, and the heat exchanger is composed of four symmetrical parts, so that the four coil pipes can be combined at will according to the structure to be used in a smaller space; cold and hot fluid flows into the heat exchange plate with a double-layer coil bundle and is guided by a coaxial spiral blade to form inner vortex flow, the upper-layer coil and the bottom-layer coil are coiled in the same direction, and the two layers of coils are connected through a coil interlayer torsion connecting elbow to change the arrangement position of the internal pipe bundle; and all parts in the heat exchanger are subjected to male die diffusion welding. The vertical titanium alloy micro-channel plate heat exchanger has higher power-to-weight ratio and high pressure resistance, has lower liquid leakage possibility than a conventional plate heat exchanger, is firmer and more stable in structure and higher in heat exchange performance, can be more flexibly applied to a small space due to the unique symmetrical assembly structure, and is lower in cost.

The invention discloses an environment-friendly antibacterial foreign language translation machine material and a preparation method thereof. The material comprises antibacterial nano Ag particle loaded microporous structure chitosan / polylactic acid. The preparation method comprises the following steps: mixing a chitosan solution with a silver nitrate solution, and carrying out visible light irradiation and electrostatic spinning processes to obtain chitosan antibacterial fibers loaded with nano Ag particles; polylactic acid is heated and melted, and a hollow polylactic acid wire is extruded; importing the three-dimensional model of the foreign language translator into a fused deposition modeling device for layering and slicing; the preparation method comprises the following steps: putting the chitosan antibacterial fiber into a hollow polylactic acid wire hole, heating and melting into a melt, introducing critical inert gas, maintaining pressure, dissolving the inert gas into the melt, carrying out fused deposition on the melt to form a foreign language translation machine structure, and carrying out in-situ microcellular foaming to form a microcellular structure in the processes of room-temperature cooling solidification and pressure release. The preparation of the environment-friendly degradable long-acting antibacterial foreign language translator material is realized, and the application prospect is wide.