1475results about How to "Fast separation" patented technology

The invention discloses an extraction and separation method of cannabidiol. According to the method disclosed by the invention, the water solubility of the cannabidiol is enhanced through adopting analkaline solution and the cannabidiol is extracted and enriched by utilizing an organic solvent; then the cannabidiol is purified and enriched through a polyamide resin column, neutral aluminum oxideand a bonded silica gel column; then the cannabidiol is crystallized to obtain high-purity cannabidiol. The method disclosed by the invention is easy to operate, strong in practicability and suitablefor industrial popularization and application.

The invention discloses an amino complex compound and a preparation method and application thereof. The components of the amino complex compound are MX (NH3)n, wherein, M is one or a plurality of Li, Mg, Al, Ca, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Ba, Sn; X is one or a plurality of F, Cl, Br, NO3, SO4; m is determined according to chemical valence, which is less than or equal to 5 and more than or equal to 1; n is determined according to coordination number, which is less than or equal to 15 and more than or equal to 1. The amino complex compound is used as an absorbent of amino after deamination and realizes separation, purification, storage and transporting of ammonia gas through low-temperature ammonia absorption and high-temperature ammonia discharge. The ammonia in circulating gas used in a synthetic ammonia technique of the invention has fast separation speed and the ammonia content entering into a tower can be reduced below 0.1 percent, thus remarkably promoting the ammonia net value and improving the transformation efficiency of the synthetic ammonia technique; furthermore, the invention can be suitable for different ammonia synthesis systems, in particular to a low-pressure ammonia synthesis system and realize the solidification of the ammonia gas during storage and transporting processes; the ammonia storage quantity can reach 40 to 70wt percent with safety and high efficiency.

The invention discloses an oil-water separation mesh film with an acid-base salt stabilizing function and with an underwater super-oleophobic property and a preparation method thereof. The method for preparing the oil-water separation mesh film comprises the following steps: 1) cleaning a 100-400-mesh fabric mesh, and drying; 2) impregnating the dried fabric mesh in an acidic solution of a chitosan-based polymer; 3) impregnating the fabric mesh in a base solution, so as to enable the chitosan-based polymer to be cured, drying the cured chitosan-based polymer, and cross-linking the dried cured chitosan-based polymer in a dialdehyde cross-linking agent solution, so as to obtain a cross-linked coating fabric mesh; and 4) impregnating the cross-linked fabric mesh in a base solution of a reducing agent for reducing Schiff base formed by cross-linking, washing the reduced fabric mesh by using deionized water, and drying to obtain the oil-water separation mesh film. The oil-water separation mesh film has biological affinity, is environment-friendly and easy to clean, can be repeatedly utilized and has high stability in strict acid-base salt environments.

The invention discloses a method for extracting high-purity fucoxanthin from seaweeds. The method is characterized by comprising the following steps: cleaning the seaweeds by using the distilled water so as to remove saline ions on the surfaces of the seaweeds, and then removing moisture on the surfaces of the seaweeds; then adding an organic reagent to the seaweeds, digesting in the dark for 8-24 hours, and carrying out suction filtration so as to obtain a leaching liquid; repeatedly digesting the leaching liquid till the leaching liquid is colorless, and combining each leaching liquid into a brown bottle; finally carrying out rotary evaporation for a period of time till black green precipitates occur in a liquid, and filtering so as to remove pigment and impurities; and continuously carrying out rotary evaporation till red solids are separated out in the liquid, and filtering so as to obtain the red solids which are the high-purity fucoxanthin. The method has the advantages that the safely healthy high-purity fucoxanthin raw material is obtained for the first time under the condition that no chromatographic techniques are used for separation, and the preparation process is safe, harmfulless, economic and environment-friendly.

The invention relates to a centrifugal microfluidic serum separation chip and a preparation method thereof. The centrifugal microfluidic serum separation chip is a wafer-shaped microfluidic chip with a micro-structure and a micro-channel, and consists of a chip engraved with a micro-structure and a micro-channel and a blank chip. The centrifugal microfluidic serum separation chip is fixed on a rotation platform of a centrifugal machine, the separation operation of serum and erythrocyte in a micro-upgraded blood sample can be realized by the synergetic process of the micro-structure and the micro-channel on the chip, and the serum for analysis and detection can be acquired. The centrifugal microfluidic serum separation chip is applicable in related application fields, such as biomedicine, clinical diagnosis, health quarantine and the like.

The invention discloses a making method of high-purity tanshinone, which comprises the following steps: (1) heating and refluxing to extract salvia miltiorrhizae root and stalk through 0.1-6.0mol/L acid water/alcohol solution; (2) adsorbing extract through adsorbing column with large-hole resin adsorbent; (3) eluting through water until pH value is 7 first and hydrophilic solvent then; collecting 3-5 column bulks to elute tanshinone completely; (4) evaporating; adding organic solvent; heating; dissolving; crystallizing; or adopting polyamide, gluglucosan gel Sephadex LH-20, MCI GEL CHP20P, C4, C8 or C18 bond phase; obtaining the product.

The invention discloses a preparation method of an oil-water separation mesh film with super-hydrophilicity and super-lipophobicity. The method comprises the steps that a metal net with the mesh size being 400-2,000 is adopted as a substrate, a cold spraying method is adopted, net wires of the metal net are coated with hydrophilic materials in a spraying mode, the hydrophilic materials are one or more of zinc oxide, silicon dioxide, calcium carbonate and titanium dioxide, and the grain size range is 5-200 nanometers; finally sintering is performed under the temperature of 300-750 DEG C for 60-240 min, and the oil-water separation mesh film with super-hydrophilicity and super-lipophobicity is obtained. The metal net does not need to be modified, the binding force is improved with no adhesive, no secondary pollution is generated, cleaning is easy, and the mesh film can be repeatedly used.

The invention provides a composite superfine fibre membrane material of a biologic compatible shell core structure and a preparation method thereof. The composite superfine fibre of the biologic compatible shell core structure, which comprises 20-95% of shell layer biomacromolecule by mass percent and 5-80% of core layer colloid by mass percent, is mainly prepared by utilizing an electrostatic spinning method with simple and easy operation. The composite superfine fibre membrane material of the biologic compatible shell core structure has light and flexible quality, good air permeability and favorable biologic compatibility, biologic degradability and biologic absorptivity, can be used as an active medicine carrier material, can completely package various active medicines, realize the independent controlled release of various medicines and has extensive application prospect in the aspects of tissue engineering bracket materials, wound coating materials, artificial dressings, multi-functional composite membranes and the like.

The invention relates to a rapid clutching device for wire straightening shearing machines, which comprises a fixed saw-shaped gear, a movable saw-shaped gear, a hanger which has a shape like the part of the hand between the thumb and the index finger, a returning device, an angle-iron cover plate, a movable shaft, a spring, a baffle, a sleeve shaft, a pulling connecting piece, an electromagnet frame, a fixed shaft, wherein the fixed saw-shaped gear is fixedly connected with the fixed shaft; the movable saw-shaped gear is fixedly connected with the movable shaft; the movable shaft is arranged in the sleeve shaft and is movably connected with the sleeve shaft; and the fixed saw-shaped gear movably meshes with the movable saw-shaped gear. The device has the advantages of high separation speed, small recoil force, stable positioning and locking and especially long life span, and can not be subjected to clutching failure caused by that too strong impact inertia force causes the returning device to skid and be unhooked.

The invention relates to a mechanical automatic speed changer clutch actuating mechanism. The mechanism comprises a clutch driving device and a clutch master cylinder assembly, wherein the clutch driving device comprises a clutch electric motor (8), a clutch electric motor worm (9), a clutch electric motor worm wheel (10) and a clutch gear (15) engaged with the clutch electric motor worm wheel (10); and the clutch master cylinder assembly comprises a master cylinder piston (12). The mechanical automatic speed changer clutch actuating mechanism is characterized in that the inside of a clutch casing (7) is provided with a clutch rack assembly; and the clutch driving device is connected with the clutch master cylinder assembly through the clutch rack assembly. Due to the adoption of the technical proposal, the mechanical automatic speed changer clutch actuating mechanism has the advantages of simple structure and smooth transmission.

The invention discloses a net membrane with oily sewage purification capability and a preparation method and application thereof. The oily sewage purification net membrane is an A/B double-layer composite net membrane, wherein the A layer of net membrane is formed by depositing a TiO2 coating on the net wire surface of a fabric net; and the B layer of net membrane is arranged on the surface of the A layer of net membrane and provided with a photodegradable hydrophobic modifier layer. The oily sewage purification net membrane can be used for simultaneously implementing oil-water separation of oily sewage and degradation of soluble pollutants. The net membrane has super-hydrophobic and super-oleophyllic properties in air, the contact angle between the net membrane and water in the air is more than 150 degrees, and the net membrane has good photo-catalytic property under ultraviolet. The net membrane can be applied to purification, chemical separation, environmental protection and the like of the oily sewage. The net membrane for sewage purification has the advantages of good separation effect, high purification efficiency, low cost, low energy consumption, convenience and the like.

The invention discloses a preparation method of a molecular engram composite film for separating a tryptophane isomer, which comprises the following steps: by using a polyvinylidene fluoride/polyvinyl alcohol blended film as the base film, coating chitosan used as a functional polymer molecular engram coating liquid on the surface of the base film in a crosslinking manner; and after the solvent is volatilized to dryness, eluting to remove template molecules, thus obtaining the molecular engram composite film capable of performing specific recognition on the template molecules. The composite film prepared by the method can continuously and fast realize the separation of a tryptophane isomer, has the advantages of simple separation operation, high efficiency and energy saving, and can be easily industrialized.

The invention provides a method for quickly detecting lead in liquid biological samples based on magnetic separation and quantum dots (QDs) marks. The method comprises the steps of (1), preparing a lead-resisting monoclonal antibody; (2), coupling the lead-resisting monoclonal antibody with nano magnetic beads through covalent bonds to prepare lead-resisting immune nano magnetic beads; and (3), adding bifunctional chelating agents, BSA (Bovine Serum Albumin) and triethylamine (TEA) into the liquid biological samples, performing incubation and adding the lead-resisting immune nano magnetic beads to mix fully, then performing magnetic separation, adding biotinylation BSA antibodies and streptavidin quantum dots (QDs) into sediments obtained by magnetic separation, and performing fluorescence detection by using a fluorescence microplate. The invention also provides a kit for quickly detecting lead in liquid biological samples.