30 results about "Continuous phase transition" patented technology

A multi-layered face mask coated with discontinuous patterns of phase change material are incorporated into the face mask construction to provide for cooling of the microclimate in the dead space of the face mask. Optimized cooling is achieved by strategic placement of layers coated with a phase change material within the mask construction and the amount and density of the phase change material in contact with the temperature sensitive areas of the face, as well as areas experiencing the maximum amount of flux from exhaled breath. The shape of the mask can also be adjusted to increase skin contact with the phase change material and decrease dead space volume, which reduces the volume of warm exhaled air and can provide sufficient cooling with less phase change material. The discontinuous patterns of phase change material also provide inter-layer spacing between the layers of the mask, which can improve splash resistance.

A multifunctional continuous phase transition extraction device comprises an extraction system, an analysis system and a solvent reclaiming system, wherein the extraction system comprises a first heat exchanger (8I), a extraction tank (1); the analysis system comprises a second heat exchanger (8II) and a first analysis tank (2I), a second analysis tank (2II), a first purifying pillar (3I), and a second purifying pillar (3II); the solvent reclaiming system comprises a first condenser (4I), a second condenser (4II), a first solvent tank (5I), and a second solvent tank (5II). According to the device, two paths of extraction circuits are formed. During the whole extraction process, the phase transition process of an extracting agent is instant and continuous; the extracting agent can be subjected to continuous phase transition and can be recycled, so that target objects can be extracted to the utmost extent, and accordingly, the efficiency is very high and the solvent consumption is small. Moreover, the whole process is performed in a sealed and low-pressure environment, the function is complete, and the purposes of safety and reliability are achieved. Therefore, the device is suitable for extraction of most natural products.

The invention provides a method for extracting fructus perillae oil through continuous phase transition, which comprises the steps of putting the dried ground fructus perillae raw material into an extraction kettle; compressing an extraction agent into liquid under the conditions that the extraction temperature is 35-55 DEG C and the extraction pressure is 0.5-2MPa; enabling the liquid to flow through the extraction kettle at a flow speed of 100-150L / h, and continuously extracting for 50-120 minutes; after extracting the fructus perillae oil, enabling the fructus perillae oil to flow into a resolving kettle, wherein the resolving temperature is 65-75 DEG C, and the resolving pressure is 0.1-0.4MPa; heating and reducing pressure of the extraction agent so that the extraction agent phase is changed into gas; performing intermediate compression to change the gas into liquid which flows through the extraction kettle again, and performing secondary extraction on the material; circulating for multiple times. The method provided by the invention has the advantages of efficient supercritical extraction, no solvent residue in product and high retention rate of aroma components; moreover, the extraction pressure and the resolving pressure are lower than the supercritical values, and the method also has the characteristics of large extraction volume of conventional solvent, large batch treatment capacity, low production cost and the like.

The invention provides a natural pigment color fixative and a preparation method thereof. The preparation method comprises the following steps: performing water extraction, concentration, extraction, column separation, crystallization and recrystallization on a rosemary raw material to obtain high-purity rosmarinic acid with the content of 95-98%; and performing alcohol extraction, concentration, centrifugation, continuous phase transition extraction, crystallization, recrystallization and drying on the rosemary raw material subjected to water extraction to obtain high-purity carnosic acid with the content of 95-98%, and performing diluting and compounding to obtain a carnosic acid preparation. The rosmarinic acid and the carnosic acid prepared by the method provided by the invention can be used as a color fixative for water-soluble pigments and lipid-soluble pigments, and compared with low-content rosmarinic acid, low-content carnosic acid and a chemically synthesized natural pigment color fixative, the rosmarinic acid and the carnosic acid have the advantages of being low in impurity content, light in taste and color, more outstanding in color protection effect, safer in application process, greater in application significance and wider in application range.

The invention provides a method for continuously extracting pomelo fruit essential oil and naringin through continuous phase transition. The method comprises the following steps: extracting a pomelo fruit raw material after drying and smashing in conditions that an extracting temperature is 30-90 DEG C, a pressure is 0.3-1.8 Mpa, an extraction agent flow rate is 40-180 L / h, extraction time is 30-240 minutes, a separate temperature is 40-90 DEG C, and a separate pressure is 0.1-0.8 Mpa, to obtain the pomelo fruit essential oil through the continuous phase transition, and extracting the naringinin the conditions that the extracting temperature is 30-95 DEG C, the pressure is 0.1-1.5 Mpa, the extraction agent flow rate is 20-150 L / h, the extraction time is 2-18 hours, the separate temperature is 40-90 DEG C, and the separate pressure is 0.1-1 Mpa. The method is capable of extracting by using a continuous phase transition technology, high in extraction purity, safe, environmentally friendly, low in cost, and suitable for large-scale industrialized production.

The invention relates to an LED (Light Emitting Diode) horizontal fluid dissipating COB (Chip-On-Board) light source and a packaging process thereof. The COB light source comprises a microarray heat pipe flat plate, a copper plating layer, a silver plating layer, a line layer, an insulation paint layer, a chip and silica gel, wherein the microarray heat pipe flat plate, the copper plating layer, the silver plating layer, the line layer and the insulation paint layer are sequentially compounded; the external surface of the chip is fixed by the silica gel in a sealing manner; the chip is tightly adhered to the silver plating layer and is fixed by welding; the appearance of the microarray heat pipe flat plate is laminated; the microarray heat pipe flat plate is subjected to cold-drawn by using an aluminum product to be integrally formed; a plurality of microarray channels which are operated independently are distributed in parallel inside the microarray heat pipe flat plate; the microarray channels are filled with a working medium; two ends of each microarray channel filled with the working medium are sealed. After the surface of the microarray heat pipe flat plate absorbs heat, the working medium in the microarray channels evaporates, heat is quickly transferred to a condensation section and then is released, and then the working medium returns to an evaporation section to continuously absorb heat, thus a series of continuous phase transition heat and mass transfer processes are repeated.

The invention discloses a method of extracting decapterus maruadsi oil through low-temperature continuous phase transition and decapterus maruadsi oil.The method includes: placing decapterus maruadsi powdery raw materials in an extraction kettle; under conditions of extraction temperature of 40-60 DEG C and extraction pressure 0.3-1.0 Mpa, compressing an extraction agent into liquid, enabling the liquid to flow through the extraction kettle at a flow rate of 100-150 L / h for continuous extraction of 30-110 min, and after decapterus maruadsi oil is extracted, enabling the liquid to enter an analysis kettle with analysis temperature of 50-80 DEG C and analysis pressure of 0.1-0.4 Mpa; performing phase transition on the extraction agent to form gas, immediately compressing the gas into liquid, enabling the liquid to flow through the extraction kettle, extracting materials again, enabling the materials to carry oil to enter an analysis tank through a solvent of an extraction tank, and obtaining a decapterus maruadsi oil product after analysis.Compared with conventional extraction methods, the method is accurate and stable in process, the decapterus maruadsi oil is high in quality, extraction rate is increased remarkably, and efficient extraction of ocean low-value decapterus maruadsi oil is realized, so that cost can be saved, product yield can be increased, and economic benefit of production enterprises can be improved.

The invention provides a continuous phase transition extraction removal method for agglutinin from castor seed meal. The method comprises the following steps of feeding a castor seed meal raw material in an extraction kettle, causing the castor seed meal raw material to flow through the extraction kettle at flow velocity of 120 L / h to 180L / h to be continuously extracted for 50 to 130min at extraction temperature of 60 to 95 DEG C under extraction pressure of 0 to 0.9Mpa, causing the castor seed meal to flow into a resolution kettle after the castor seed meal is extracted, performing resolution at resolution temperature of 65 to 95 DEG C under resolution pressure of -0.095 to -0.07Mpa, performing heating and pressure reduction on an extracting agent to realize the phase transition of the extracting agent into gas, performing instant cooling to realize the phase transition of the gas into liquid, causing the liquid to flow through the extraction kettle, detoxifying the material, and repeating the operation for many times, wherein the extracting agent is 75 to 100 percent methanol or 80 to 95 percent ethanol. Compared with a conventional detoxification process, the continuous phase transition extraction method has the advantages of high detoxification efficiency, few solvent residues and short time, and also has the characteristics of large conventional solvent extraction volume, high batch processing capacity, low production cost and the like.

The invention discloses a device for detecting phase transition of materials under high pressure. The device consists of three parts: light source bin, material bin, photoelectric detection and temperature control unit. When the device is working, it is placed in a pressure regulating container, and the external pressure is transmitted to the material to be tested in the material bin through the soft bag. The temperature in the material bin is regulated by the internal temperature control unit. When the device is working, the light source produces parallel light rays, which illuminate the material to be tested in the material bin vertically, and the light transmittance of the material under different pressures and temperatures is measured by the photoelectric detection unit. The data analysis and processing of the light transmittance signal can obtain the continuous phase transition state of the material under different pressures and temperatures. The device provides effective data support for the selection of phase-change buoyancy materials.

The invention discloses a method for extracting bergamot fruit essential oil through continuous phase transition at a low temperature. The method comprises the following steps: crushing bergamot fruits until the granularity is 10-30 meshes, drying the granular bergamot fruits until the moisture content is smaller than or equal to 13%, and using the obtained bergamot fruit powder as a raw material to extract the bergamot fruit essential oil through continuous phase transition at the low temperature, wherein the technology conditions include that the extraction temperature is 50-65 DEG C; the extraction pressure is 0.4-0.7MPa; the resolving temperature of a resolving pot is 55 DEG C and the pressure is 0.25MPa; the whole extraction time is 45-90 minutes; and the bulk density of the raw material of the bergamot fruit powder directly put in the extraction pot is 0.3-0.5 kg / L. The method disclosed by the invention summarizes technology conditions for extraction of the bergamot fruits through the continuous phase transition at the low temperature; in the whole extraction process, a high temperature does not exist so that active substances are not damaged, and hazardous substances such as polymers cannot be generated; the operation is convenient and safe; the method is environmental-friendly; and the method is quite suitable for continuous large-scale industrial production.