31results about How to "Achieve continuous mass production" patented technology

The invention relates to a method for extracting rubusoside from sweet tea leaves. The method comprises the following steps of (1) smashing and sieving the sweet tea leaves, adding water and conducting continuous countercurrent extraction and filtration; (2) adding an enzyme preparation for enzymolysis, conducting inactivation, cooling, flocculation and filtration and washing filtered residues with water; (3) conducting ultrafiltration and nanofiltration; (4) conducting adsorption through a macroporous adsorption resin chromatographic column, conducting washing with water, discarding water washing liquid and conducting gradient elution with an organic solvent and concentration under reduced pressure; (5) conducting adsorption through an aluminum oxide chromatographic column and conductingwashing with water concentration under reduced pressure; (6) adding activated carbon and conducting stirring, filtration, concentration under reduced pressure and spray drying; (7) dissolving the organic solvent and conducting filtration, crystallization, suction filtration, vacuum drying and pulverization to obtain a rubusoside product. The rubusoside product extracted by the method has pure white color, the purity is greater than or equal to 99%, and the yield is greater than or equal to 90.5%. The method has a simple operation process, short extraction time, low energy consumption and a lowcost and can achieve continuous large-scale production.

The invention relates to a method for extracting rubusoside from sweet tea leaves. The method comprises the following steps: (1) crushing sweet tea leaves, sieving the material, adding water, continuously performing countercurrent extraction, and filtering the material; (2) adding an enzyme preparation for enzymatic hydrolysis, and performing steps of inactivation, cooling, flocculation, filtration, and filter residue washing with water; (3) performing ultrafiltration and nanofiltration; (4) performing adsorption on macroporous adsorption resin chromatography column, washing the material withwater, discarding a washing solution, performing gradient elution with an organic solvent, and performing vacuum concentration; (5) performing adsorption on an alumina column, washing the material with water, and performing vacuum concentration; (6) adding activated carbon, stirring the material, filtering the material, and performing vacuum concentration and spray drying; and 7) dissolving the material with the organic solvent, and performing steps of filtering, crystallization, pumping filtration, vacuum drying, and crushing to obtain the rubusoside product. The extracted rubusoside productpresents pure white color, the purity is greater than or equal to 99%, and the yield is greater than or equal to 90.5%. The method of the invention has the advantages of simple operation process, short extraction time, low energy consumption and low cost, and can realize continuous large-scale production.

The invention relates to a preparation method for an acidic fertilizer. The preparation method comprises the following steps: mixing of phosphoric acid with urea; reaction after completion of mixing;and granulating and drying. The acidic fertilizer provided by the invention comprises urea phosphate and ammonium bisulfate and has a pH value of 2.5 to 3.5, so the pH value of alkaline soil can be reduced, and the volatilization loss of ammonium nitrogen in the alkaline soil is reduced; in addition, the stability of amide nitrogen can be increased, and activation effects can be exerted on phosphorus and medium-trace elements; meanwhile, the phosphorus can be avoided from fixation by elements like calcium and magnesium, and the moving ability of the phosphorus is improved; when the pH value ofthe acidic fertilizer is lower than 2.5, the acidic fertilizer has too great viscosity and is easy to absorb moisture; and when the pH value of the acidic fertilizer is excessively high, the pH valueof soil can not be effectively reduced, and the purpose of activating the phosphorus and the medium-trace elements can not be achieved.

The invention relates to a method for preparing multi-channel hollow fiber nano-filtration membranes. The method includes steps of (1), adding polymers, organic solvents and additives into a reaction kettle according to certain proportions, stirring the polymers, the organic solvents and the additives to form uniform and stable membrane casting solution, defoaming the membrane casting solution under a vacuum condition, ejecting the membrane casting solution via multi-channel hollow fiber molds under the driving effects of air pressures, feeding the membrane casting solution into external coagulating bath under certain core solution flow rate and air spacing conditions, carrying out phase transformation to form multi-channel hollow fiber basement membranes, sufficiently soaking the multi-channel hollow fiber basement membranes, then taking out the multi-channel hollow fiber basement membranes, airing the multi-channel hollow fiber basement membranes at certain temperatures, packaging the multi-channel hollow fiber basement membranes in stainless steel assemblies, plugging two ends of each stainless steel assembly by the aid of cotton and sealing the stainless steel assemblies by glue; (2), preparing aqueous-phase solution with certain concentration and oil-phase solution with certain concentration, injecting the aqueous-phase solution in multi-channel inner holes, reserving the aqueous-phase solution in the multi-channel inner holes for a certain period of time, purging the aqueous-phase solution by the aid of strong airflow, injecting the oil-phase solution into the multi-channel inner holes, reserving the oil-phase solution in the multi-channel inner holes for a certain period of time, purging the oil-phase solution by little airflow, arranging the multi-channel inner holes in an oven, carrying out reaction and taking the multi-channel inner holes out of the oven to obtain the multi-channel hollow fiber nano-filtration membranes. The method for preparing the multi-channel hollow fiber nano-filtration membranes has the advantages of high toughness and strength.

The invention discloses a controllable preparation method for gold nanoparticles induced by a polysaccharide derivative, and belongs to the technical field of green preparation of nano materials. The controllable preparation method includes the steps that under the acidity condition (pH4.8), an oxidized curdlan polysaccharide derivative is prepared through 4-accetamide-2, 2, 6, 6-tetramethyl piperidine-1-oxyl, sodium chlorate and sodium hypochlorite; the pH of the oxidized curdlan polysaccharide solution is adjusted, the solution is mixed with a chloroauric acid solution at the same volume, reaction is performed for 1.5 h at the temperature of 100 DEG C, a mixed solution is cooled to a room temperature, then filtered, centrifuged, dispersed, dialyzed, frozen and dried to obtain the gold nanoparticles, and through control over the pH value of the oxidized curdlan polysaccharide solution, gold nanoparticles of different shapes and grain sizes can be obtained. In this way, the preparation method is environmentally friendly, simple, easy to implement and good in stability, the shape and grain size of the gold nanoparticles are controllable, continuous large-scale production can be achieved, and the method has good application prospects.

The preparation method of a fresh fig fruit concentrated juice comprises the following steps: (1) homogenization and extraction: taking figs, adding hot water, and conducting homogenization, standing,filtering, enzyme deactivation and cooling; (2) flocculation and clarification: adjusting pH value to weakly alkaline, adding a flocculating clarifying agent, and conducting stirring, standing, centrifugation, ultrafiltration, and water washing to obtain an ultrafiltrate; (3) decolorization and deastringency: loading the ultrafiltrate onto a macroporous adsorption resin column, collecting effluent, conducting washing, collecting washing liquid, loading the effluent and the effluent on a polyamide resin column, collecting effluent, conducting washing with water, and collecting washing liquid to obtain a liquid after decolorization and deastringency; (4) neutralization and desalting: loading the liquid after decolorization and deastringency onto a cation exchange resin column, collecting effluent, conducting washing with water, and collecting washing liquid and concentration to obtain a concentrate; and (5) composite debittering: adding activated carbon to the concentrate, and conducting stirring, pressure filtration, resin debittering, ultrafiltration, sterilization, and cooling. The concentrated juice obtained by the method of the invention has the advantages of clear and translucent appearance, high total sugar content, high total amino acid content, high yield, no bitter and astringent taste and high solid content; the method of the invention has the advantages of simpleness, short extraction time, low energy consumption and low cost, and can realize continuous large-scale production.

The invention provides a continuous preparation process of zanthoxylum bungeanum seed protein, which comprises the following steps: pretreating zanthoxylum bungeanum seeds, extracting grease by adopting a subcritical process, and collecting degreased zanthoxylum bungeanum seed meal; carrying out superfine grinding on zanthoxylum bungeanum seed meal, sieving, carrying out ultrasonic hedging countercurrent reaction together with alkali liquor, wherein when the ultrasonic hedging countercurrent reaction is performed, the system is alkalescent; obtaining protein slurry after the ultrasonic hedgingcountercurrent reaction; enabling the protein slurry to pass through an ultrasonic vibrating screen and then a centrifugal machine to screen out insoluble substances twice, so as to obtain protein clear liquid; and adding an acid solution into the protein clear liquid to regulate the system to be weakly acidic, separating by using a centrifuge, and carrying out freeze drying by using a freeze dryer to obtain the zanthoxylum bungeanum seed protein. The continuous preparation process combining subcritical degreasing, ultrasonic oscillation continuous extraction, weak acid settling separation and high-speed freezing separation is adopted, the finished zanthoxylum bungeanum seed protein product with good quality and high yield is obtained, the reaction time is short, and the production efficiency is high.

The invention provides a filler recovery device for thermosetting plastic waste and a recovery method. The filler recovery device mainly comprises a feeder, a feeder translation device, a rotary heating furnace, a spiral feeder, a cooling spray furnace, a dust filter, a tail gas purification furnace, a VOC detection device, a hydraulic lifting mechanism, a water cooling system, an air input system, a nitrogen input system, an electrical control system and the like. Organic matter in the thermosetting plastic waste is removed through a long-time high-temperature aerobic combustion method, filler in waste is recycled and can be reused for production of thermosetting plastic, cyclic utilization of the waste is achieved, and therefore the production cost is reduced, environmental pollution is reduced, and economic benefits are improved; and moreover, the production process of centralized feeding, high-temperature aerobic calcining, inclined discharging, continuous spraying cooling and continuous discharging is adopted, the device is compact in structure and high in production efficiency, and continuous batch production can be achieved.