38 results about "Supercritical flow" patented technology

The paclitaxel has broad spectrum antineoplastic activity, which is used to treat oophoron cancer and breast cancer, has the significant effect, and is known as a anti-cancer drug with the wide developing prospect, but the particle diameter of paclitaxel medicine powder is bigger so that the paclitaxel medicine powder isn't absorbed by administer orally, has the lower bioavailability, and limits the clinic application of paclitaxel. The invention makes Paclitaxel fine with supercritical flow new technique. The experiment makes Paclitaxel fine with above-critical CO2 as the dissolvent and with supercritical flow forced disperse solution technique, which researches the influence of the pressure, the temperature, the concentration of the solution and the flow speed of the solution for the shape, grain diameter and the distribution of fine paclitaxel. The result indicates that the nanometer grain diameter can be changed in the finite range by changing the technology parameter, wherein the prepared surface of the nanometer grain is smooth, and has the good sphericity, and the average grain diameter is 670nm-940nm, the concentration of the solution and the flow speed is the main factor.

The invention discloses a fluidization enhanced heat transfer method and a fluidization multiphase heat transfer medium. The heat transfer process is enhanced by adding particles inside a supercritical flow body. The technique can be widely applied to an air conditioner, a heat pump, a heat pipe, the heating, the cooling of an internal-combustion engine, an electronic device and the cooling of a power device, raises the energy utilization rate of the whole system, improves the heat control of the system and increases the thermal management ability.

The invention discloses a flow state connected building suitable for a supercritical flow bend. Incoming flow from the upstream of the bend enters a stilling pool of the flow state connected building in a single-stage fall mode; a side weir is arranged on the side wall of the stilling pool and is connected with a downstream flow state regulating tank; a rectifying tail pier is arranged at an outlet of the flow state regulating tank; the axis of the rectifying tail pier is in parallel to that of a flow passage on the downstream of the bend. Design of the flow connected building adopts the main principle that firstly, the energy dissipation effect of the stilling pool is utilized to reduce a flow rate of the incoming flow, and local subcritical flow is formed in the stilling pool; then the principle that the low flow rate has high adaptability to an overflowing boundary is utilized, the side weir is adopted to change the flow direction of water flow, and by the flow state regulating tank, the flow rate of the water flow is further reduced and the flow state is further improved; finally, the rectifying tail pier is utilized to regulate the flow direction to be in parallel to the axis direction of the flow passage on the downstream of the bend. According to the flow state connected building suitable for the supercritical flow bend, the adverse flow states, such as rhombus waves, a large water surface transverse slope and a deflected side wall, formed by the water flow in the supercritical flow bend can be effectively avoided, and washout and erosion damage and the like of water flow with high sand content on the boundary of the flow passage on the downstream of the bend are reduced and avoided.

The invention relates to a testing experimental platform, in particular relating to a detection device of the physical property of a natural gas supercritical flow state. The technical scheme is that the natural gas in a natural gas tank is further boosted by a booster pump, is heated to the temperature of simulated gas reservoir through a heating unit and a temperature controller, and enters into a flowing test section through a check valve and a flowmeter to form supercritical flow; a backpressure control system controls gas reservoir pressure value needing to be stimulated; a cooling system and the temperature controller cool the gas flowing out from the testing section; and a buffer tank can depressurize the effluent gas to achieve the temperature and pressure condition of the booster pump. The detection device of the invention has the beneficial effects that the density and the viscosity of the five-element parameters of the natural gas can be detected under the high temperature and high pressure supercritical condition. The device can realize wellhole gas flow stimulation and physical property parameter testing under the supercritical conditions, and flowing stimulation of the natural gas under the undercritical conditions.

The invention provides a supercritical heat wave heat transfer element, comprising at least one cavity body capable of being sealed and at least one working medium, wherein, the working medium is bulked into the cavity body capable of being sealed, the cavity body capable of being sealed is sealed, the sum of the liquid volume of the bulked working medium is less than the total cavity volume; at least one part of the cavity body is a heat absorbing end, at least the other part of the cavity body is a heat discharging end; the heat transfer element absorbs the heat quantity from the heat absorbing end. When the working medium in the cavity body is in a subcritical and/or supercritical state, the supercritical flow body inside the cavity body transfers the heat quantity to the radiating end from the heating absorbing end mainly in a way of heat wave in order to realize the heat energy transfer because the supercritical working medium has low thermal diffusivity and high thermal expansivity near a critical point and/or an imitated critical point.

The invention relates to a ultra-critical impact flow particle packing method, which is characterized in that: adding the wall material into the mixer to be dissolved into solution; mixing and dispersing the particle uniformly, to form suspension; using a couple of coaxial nozzles to output the wall material to be deposited on the surface of packed particle to form the coat, and separated by the separator to obtain the micro capsule product. The invention can combine the advantages of present packing fluid bed packing method and impact flow method, to be used in food industry, paper production, etc.

The invention relates to an aquaculture raft. The aquaculture raft is a firm cultivation raft capable of floating under the water surface, which is built by materials, such as a fixing material layer (1), a floating material layer (2), a suspending device (3), a hanging arm (4), a fixing device (5), a rope (6), a connector (7) and the like. The aquaculture raft is used for culturing various aquatic products, and cultivates for a period of time through a method of applying fertilizer or feed to the cultured aquatic products so that the content of specific elements of the aquatic products is remarkably improved and an aquatic product culture effect of reinforcing the nutrition of the specific elements is reached. When the aquaculture raft disclosed by the invention is applied to aquaculture, a large amount of the fertilizer and the feed can be saved, and the aquaculture raft can be applied to cultivating aquatic products in rivers, lakes and seas, such as sea tangles, agars, fishes, shrimps, crabs, shellfishes, abalones, sea cucumbers and the like, is especially suitable for the aquaculture with reinforced biological nutrition and is also suitable for deepwater hypervariable regions with lack water nutritions, deep water, supercritical flow, large wind and large waves.

The invention provides a supercritical-fluid-based 3D electrodeposition machining device and method. The device comprises a carbon dioxide gas bottle, a high-pressure pump, a digital controller, a reactor, a moving anode assembly, a moving cathode assembly, a direct-current power supply and a cathode matrix serving as a machined part, wherein the reactor is internally provided with a mechanical stirrer; the moving anode assembly comprises a Z-directional linear motor, a driving lead screw, an anode connecting rod and a moving anode; the moving cathode assembly comprises an X-directional linear motor, a Y-directional linear motor, a guide rail, a moving block and a fixture; and when the supercritical-fluid-based 3D electrodeposition machining device is used, the moving anode and the cathode matrix are respectively and electrically connected with the anode and cathode of the direct-current power supply. The machining method mainly comprises the steps of carrying out chemical plating treatment on the cathode matrix in advance; mounting the cathode matrix; preparing a supercritical fluid; carrying out electrodeposition machining and after-treatment and the like. By using the supercritical-fluid-based 3D electrodeposition machining device and method, the electrodeposition speed can be effectively increased, the deposition quality can be improved, a complex and precise metal part can be prepared through electrodeposition in a three-dimensional space, and the application field of an electrodeposition technology is widened.

Generally, a method of pressure regulated supercritical fluid fractionation of oil seed extraction materials which can be utilized to refine oil seed extraction material established in an amount of supercritical fluid. Specifically, a method of pressure regulated supercritical fluid fractionation of corn germ extraction material to produce a refined corn oil extraction material.

The invention belongs to the nanometer micro material preparing device, which especially relates to an internal mixed hypercritical fluid nanometer micro material preparing nozzle. The invention is formed by a nozzle main body and a taper end sheath and a collector which are mounted on the main body; wherein, the tail of said main body is a nozzle core; the main body and the taper end sheath are positioned by positioning surface, locked by screw connection and adjusting locking element, and sealed by sealing ring; the taper end sheath and the nozzle core form the annular slit as the nozzle; the nozzle via the feeding channel of main body is connected to the material feeding channel; the collector is outside the main body and the taper end sheath to be fixed on the main body; the collector has a valve. The invention has reasonable structure which can mix several materials synchronously to be sprayed, to realize internal mixed hypercritical fluid nanometer micro particle preparation. The annular slit of nozzle can be adjusted easily to avoid jam and prepare smaller particle. The invention can reduce the cost and improve the efficiency.

The invention discloses a water tank test method for local scouring of a foundation under a supercritical flow condition. The water tank test method employs a laboratory regeneration control method combining surface shock waves and high-speed water flow, shock waves generated by crushing waves on a gentle slope and a high-Froude-number fluid generated by a narrow water flow are regenerated in a wind wave gutter channel, a model sand local starting power condition is used for controlling local scouring of an engineering structure foundation, so that a structure foundation scouring experiment measuring section under the supercritical flow condition is constructed, and a high-precision data source is generated for prediction of foundation scouring pits in offshore wind power and water conservancy projects and corresponding protection engineering design.

The invention provides a supercritical fluid recrystallization device. The supercritical fluid recrystallization device comprises a crystallization kettle body and a constant-temperature tank, whereinan observation window is formed in the crystallization kettle body; a solution is injected to the upper end of the crystallization kettle body through a constant flux pump; the crystallization kettlebody is arranged in the constant-temperature tank. The supercritical fluid recrystallization device provided by the invention has the beneficial effects that under a supercritical situation, generation of supersaturation can be caused by reducing the pressure, a high saturation rate can be achieved, and a solid solute can be crystallized out from a supercritical solution; a solute in the solutionis separated out and collected by utilizing CO2 in a supercritical state, so that nano-grade crystalline particles can be obtained.

The invention relates to a chromatography method in which a gaseous, liquid or supercritical mobile phase containing species to be separated is circulated through a packing, said packing comprising: —a plurality of capillary ducts extending in the packing between an upstream face through which the mobile phase enters the packing and a downstream face through which the mobile phase leaves the packing, and —a continuous medium permeable to molecular diffusion extending between said ducts, comprising a porous organic gel or an organic liquid and including at least one network of connected pores, the size of which is greater than two times the molecular diameter of at least one species to be separated and opening to the ducts, so as to give said at least one species a diffusive path between said ducts. The invention also relates to a packing for the implementation of such a method and a method for manufacturing such a packing.

The invention discloses a hypersonic aircraft with a heat energy utilization system and a flow control method, and relates to the field of heat management and flow control of hypersonic aircrafts. A supercritical CO2 heat exchange micro-channel is arranged at the head position of the hypersonic flight vehicle for heat exchange, supercritical CO2 flows through the supercritical CO2 heat exchange micro-channel to absorb a large amount of heat so as to achieve heat reduction of the head of the flight vehicle, and then high-temperature and high-pressure supercritical CO2 impacts a turbine to do work; the internal energy of hypersonic gas carried by the supercritical CO2 is converted into electric energy through a generator, and the electric energy is stored in a storage battery and can be used for supplying power to all systems of the aircraft; then high-pressure CO2 gas subjected to the heat energy utilization process is fully utilized, high-pressure jet flow is jetted at the front edges of the head and the empennage of the aircraft to control head shock waves and empennage shock waves, and therefore heat flow and resistance of the head and the empennage of the aircraft are reduced, and heat reduction and resistance reduction of the hypersonic aircraft are achieved.

The invention discloses a distributing plate for carbon fiber spinning and a distributing assembly thereof and belongs to the technical field of carbon fiber spinning and processing. The distributing plate consists of a plate frame and a plurality of plate strips, wherein the plate strips are provided with bent surfaces, connecting surfaces I and connecting surfaces II, the plate stirps are fixedly connected to form a plate strip body through the connecting surfaces I and the connecting surfaces II of the adjacent plate strips, and the edge of the plate strip body is fixedly connected with the inside of the plate frame. Distributing holes are formed in the bent surfaces, the connecting surfaces I and the connecting surfaces II of the adjacent plate strips. In addition, the invention further provides a distributing assembly of the distributing plate. The plate surface of the distributing plate is honeycomb, the flowing speed of a solution entering a spinning box can be effectively homogenized, accordingly the phenomena of supercritical flow and turbulent flow occurred when the solution enters the spinning box surging channel are avoided, and the production efficiency of spinning production is remarkably improved.

A method and apparatus for treating a liquid using ultraviolet radiation. A thin flow of liquid in a supercritical flow is irradiated by at least one radiation source external to the thin flow. The flow may desirably have a Froude number greater than 3 and a velocity greater than 0.8 m/s. The apparatus for treating a liquid including may have a reservoir supplying liquid though a slot into an open channel to generate a thin flow of liquid having a supercritical flow along the channel with at least one radiation source external to the thin flow to irradiate the thin flow.

The invention belongs to the technical field of capsules, and particularly relates to a preparation technology of capsules having multiple treatment effects. The capsules having multiple treatment effects are characterized by comprising stiff silkworm, giant typhonium rhizomes, prepared rhizoma arisaematis, radix angelicae, rhizoma gastrodiae, divaricate saposhnikovia roots, rhizoma et radix notopterygii and pseudo-ginseng. The preparation technology comprises the following steps of preferably selecting medicinal materials of the stiff silkworms, the giant typhonium rhizomes, the rhizoma arisaematis, the radix angelicae, the rhizoma gastrodiae, the divaricate saposhnikovia roots, the rhizoma et radix notopterygii and the pseudo-ginseng which are high in medicine property reserving degree,performing cleaning, performing drying in the shade for standby application, sequentially cutting the medicinal materials, crushing the cut medicinal materials, adding medicinal powder to a centrifuge, performing high-speed rotation, performing supercritical flow extraction on the medicinal materials to obtain essence substances by using carbon dioxide as a medium, and concentrating the essence substances of the medicinal materials. The medicine effects of the capsules having multiple treatment effects produced by the technology are remarkably improved, after the content of submicron powder isincreased, the granule gap of traditional Chinese medicine substances of the capsules is obviously reduced, the granule fluidity is reinforced, capsule shells having a same volume can accommodate more mass of medicine powder, and the medicine taking quantity of a patient can be reduced.

The invention discloses a technology for purifying deoxyribose through supercritical fluid crystallization. The technology comprises the steps as follows: (1) spraying a neutralized 90 DEG C deoxyribose liquor containing impurities from the top of an extraction tower through a raw material pump, meanwhile, introducing a supercritical fluid into the bottom of the extraction tower, and controlling the temperature of the supercritical fluid at 33-36 DEG C, the pressure at 9-11 Mpa and the flow at 15-20 m<3>/min; (2) reducing the pressure of the high-pressure supercritical fluid containing dissolved deoxyribose to the pressure lower than supercritical flow critical pressure through a throttle valve to allow the supercritical fluid to enter a separation kettle; (3) after extracting the deoxyribose, performing dehydration and drying processes sequentially on a product. The technology is simple, the equipment structure is compact, meanwhile, crystals form a crystal layer on a heat transfer surface instead of suspending in a liquid in the technological process, so that blockage of equipment and pipelines is avoided, and production faults are reduced. The product produced with the technology has high purity, bright and white appearance, good bioactivity and uniform grain size.

Method for exchanging materials, wherein a gaseous, liquid or supercritical mobile phase containing species to be separated is circulated through a packing comprising a stationary phase, the method being characterised in that:—the packing comprises a plurality of capillary ducts formed in at least one first material, the ducts passing through the packing between an upstream face through which the mobile phase enters the packing and a downstream face through which the mobile phase leaves the packing,—each duct comprises, on at least one portion of the inner wall thereof, at least one secondary material consisting of an organic gel or porous mineral,—the thickness of the secondary material defines, inside the duct, at least one empty tubular channel of solid material, the channel being open so as to allow the mobile phase to enter and extending continuously between the upstream and downstream faces of the capillary duct—the secondary material has a thickness between 0.05 times and 0.5 times the diameter of the channel—the method is carried out with a velocity of the mobile phase between 5.0 times and 50 times the speed of the optimum mobile phase defined by the minimum of the Van Deemter curve of the majority separating compound under the method conditions—the cumulative volume of the capillary ducts is more than 15% of the total packing volume.