30results about How to "Enables continuous extraction" patented technology

A method and device for continuous extraction of crystalline magnesium in the Pidgeon process for magnesium smelting at high temperature. The present invention aims at the above-mentioned problems existing in the Pidgeon process for magnesium smelting and its derivative processes. With the characteristics of small mutual wettability, the dynamic porous filter formed by the refractory metal / ceramic sphere group is used as the crystallization carrier of magnesium crystallization steam. A perforated plate is used to separate the metal or ceramic ball flow channel from the magnesium vapor flow channel. The hole diameter of the porous plate is smaller than the diameter of the metal or ceramic sphere. When magnesium vapor encounters low-temperature refractory metal or ceramic particles, it cools down and liquefies or crystallizes, while the refractory metal particles or ceramic particles heat up to over 500°C due to heat exchange with magnesium vapor. The refractory metal particles or ceramic particles with a temperature >500°C leave the magnesium condensation zone with the liquefied magnesium or crystallized magnesium on the surface.

The invention provides a method for preparing high-purity mogroside V, and belongs to the technical field of extraction of effective components in natural plant. The method comprises the following steps: pretreatment of raw materials, countercurrent extraction, multistage filtering, strong-base anion resin decolorization, concentration, vacuum concentration and freeze drying. The method combines the characteristics of multistage filtering, realizes continuous extraction, is simple in process and suitable for industrial large scale production. Efficient liquid detection shows that mogroside V of a product prepared through the method is 65 to 68 percent, the yield is 82 to 86 percent, the formed mogroside V is high in purity, organic solvents are not used during extraction, the product is safe, and the quality is guaranteed.

The invention discloses an additive for improving quality of cut stem, as well as a preparation method, device and application thereof. The method comprises the following steps of: crushing dry tea flower to 20 meshes, putting into a subcritical extraction device, adding water, controlling the material-liquid ratio to be 20-40ml / g, controlling the extraction temperature at 100-120 DEG C, controlling the extraction pressure to be 7-15Mpa, extracting, then adding NaCl into an extraction solution, fully stirring and dissolving, adding CH2Cl2 into the extraction solution according to the proportion of 1: 1, fully mixing, standing for stratification, separating liquid, collecting a CH2Cl2 layer, adding anhydrous sodium sulfate, filtering, collecting filtrate, and concentrating to prepare essential oil of the tea flower, which is used as the additive for improving the quality of the cut stem. The essential oil of the tea flower according to the invention has the advantages of high extraction rate, low energy consumption, clean process, simple process and great industrial application prospects. In addition, by adding the essential oil of the tea flower, which is obtained by the preparation method, into the cut stem, miscellaneous gas of the cut stem can be effectively covered, dry tingling of smoke gas can be reduced, smoke flavor is coordinated, and the comprehensive quality of the cut stem is obviously improved.

The invention relates to a device and a method for quick extraction of electrical stimulation earthworm body fluid, and aims to solve the technical difficult problems that the natural secretion of earthworm body fluid is little and the earthworm body fluid is difficult to collect on the premise of keeping the components and nature of the earthworm body fluid unchanged and trying to reducing the injury to the living earthworm, and meet the quick extraction requirement of earthworm body fluid in experimental investigation. The device comprises an extraction box, a separation plate and a collection box which adopts ultra-high molecular weight polyethylene and other hydrophobic material; the hole pattern of the separation plate is a conical counter bore; one end of each metal electrode plate is provided with an insulated handle, and each conductive end and the corresponding insulated handle are placed adjacently to form a pole plate group with an adjustable distance; the output voltage range of an adjustable direct current power supply is adjustable. The method comprises the steps that the cleaned living earthworm washed is arranged among the pole plate groups, spacing between adjacent pole plates is adjusted to tightly clamp the earthworm; after the power supply is electrified, the earthworm body is communicated with every two pole plates to form loop current, and the earthworm is stimulated to secrete a large amount of body fluid; the body fluid drops into the collection box through the separation plate under the action of gravity, and the crude extract of earthworm body fluid is obtained.

The invention relates to an ultrasonic continuous extraction and concentration device for natural medicines, comprising a liquid medicine extracting tank, a liquid medicine concentrating tank, a solvent condenser, a solvent recovering tank and a vacuum pumping system, wherein a heating jacket is arranged outside the wall of the liquid medicine extracting tank; a water proof box is arranged in theheating jacket; two sets of ultrasonic oscillators are symmetrically arranged outside the wall of the liquid medicine extracting tank in the water proof box; a condenser is arranged at the upper end of the liquid medicine extracting tank; the liquid medicine extracting tank is communicated with the liquid medicine concentrating tank through a liquid medicine delivery pipe; the liquid medicine concentrating tank is communicated with the solvent condenser through a solvent absorbing pipe; the solvent condenser is connected with the solvent recovering tank through a solvent collecting pipe; and the solvent condenser is connected with the vacuum pumping system. The ultrasonic continuous extraction and concentration device can be applied to the industries of pharmacy, food processing, chemicalseparation and the like, realizes a high-performance production process of multiple extraction, continuous extraction and continuous concentration of medicines while the solvent is completely recovered, can improve the production efficiency, economize the manpower and avoid pollution of the environment, has a simple flow, low equipment cost and strong operability, and is easy to implement.