56results about How to "High quality and purity" patented technology

The invention relates to the technical field of laundry detergent, in particular to an anti-staining and color-protecting laundry detergent, which comprises the following raw materials in percentage by weight: anti-staining agent 2-10%, polyoxyethylene alkyl alcohol ether 5-15%, polyoxyethylene laurel Amide 5‑15%, fatty acid amide 2‑10%, sodium fatty acid methyl ester sulfonate 5‑10%, sodium xylene sulfonate 1‑5%, pigment 0.01‑0.05%, essence 0.1‑0.5%, deionized water quantity. The laundry detergent of the present invention is mainly composed of mild and low-irritation nonionic surfactants, compounded with anionic surfactants with excellent decontamination, emulsification and foaming capabilities, and has better anti-staining and color protection effects. When the clothes are washed together, it can prevent the clothes from staining during washing; low foam and easy to rinse, can effectively remove stubborn stains on the clothes; deep cleansing, making the washed clothes whiter and more colorful; skin care antibacterial, pH value is neutral, Mild and non-irritating, highly effective sterilization, does not hurt the skin.

The invention relates to an upgrading process of strips. The upgrading process comprises the following steps of preparing materials, loosening, carrying out low-temperature vacuum resurgence, moistening leaves, sieving, sifting in an ad hoc area, classifying and storing, repeatedly baking leaves, and metering and packaging, wherein sieving comprises a step of sieving the strips to three different specifications d of not more than 3.18 mm, d of more than 3.18 mm and less than 12.7 mm, and d of not less than 12.7 mm according to the sieve mesh number; sifting in the ad hoc area comprises a step of manually sifting the sieved strips with the specification of d of not less than 12.7 mm in the ad hoc area; classifying and storing comprises a step of respectively storing the strips with the specifications of d of not more than 3.18 mm and d of more than 3.18 mm and less than 12.7 mm, and tobacco leaves, which are sorted out from sifting; repeatedly baking leaves comprises a step of respectively carrying out low-temperature drying treatment on the sieved strips or the manually sifted strips. According to the upgrading process, the strips can be divided into raw materials with different specifications and be convenient for classification and use, and the application range is widened; through sifting, the use value is improved, and the upgrading process is convenient for precise application of the raw materials.

This invention relates to lucid ganoderma spore powder culturing and collecting technology. It includes the tree seed choosing, loping, cutting, packaging sterilization, inoculation, hyphae culturing, burying, ganoderma management and spore powder culturing and collecting, and the powder culturing and collecting includes the following procedures: material preparation, film laying, packaging and sleeving, culturing management, powder collecting, drying, sieving and storing. The spore powder of this invention is pure, the turnout is high, the economic effect is evident, and the unit output increases the selling income by more than 32% with low cost. And meanwhile, the heavy metal contents of the lucid ganoderma spore powder of this invention I controlled in the national standard.

The invention discloses a method for preparing high-purity baicalein from baicalin. Add baicalin into sulfuric acid aqueous solution, react for 10-15 minutes at 50-70°C, crystals are precipitated to obtain a crude product, and then purified with acetone to obtain high-purity baicalein. Purity Baicalein. The obtained baicalein was determined by high performance liquid phase method, and the normalized method content was 96% or above. The method provided by the invention prepares finished products with high quality, high purity and light color, short reaction time, mild reaction conditions, simpler process and low cost. It is more suitable for industrial production.

The invention discloses a biomass pyrolysis furnace with detachable vertical semicircular tubes, and relates to the technical field of biomass pyrolysis furnaces. The biomass pyrolysis furnace comprises a feeding zone, a preheating zone, a carbonizing zone and a cooling zone which are sequentially arranged from top to bottom in the vertical direction. The two opposite semicircular vertical tubes, which vertically penetrate the pretreating zone, the carbonizing zone and the cooling zone, are arranged in the pretreating zone, the carbonizing zone and the cooling zone. Horizontal internal semicircular furnace pore plates are arranged at joints among the feeding zone, the preheating zone, the carbonizing zone and the cooling zone and at the bottom of the cooling zone. Pneumatic stop valves are arranged at positions, corresponding to the joint between the carbonizing zone and the cooling zone and to the bottom of the cooling zone, in the two semicircular vertical tubes. A preheating flame path, a carbonizing flame path and a cooling water path are sequentially arranged at positions, corresponding to the preheating zone, the carbonizing zone and the cooling zone, of a zone between the inner wall of a furnace body and the outer walls of the two semicircular vertical tubes. Two preheated air outlets communicated with the semicircular vertical tubes are arranged on the upper portion of one side of the preheating zone. The preheating flame path and the carbonizing flame path are communicated through a U-shaped pipe arranged on the outer wall of the furnace body. Two carbonized gas outlets communicated with the semicircular vertical tubes are arranged at the top of one side of the carbonizing zone. Baffle plates are arranged in the preheating flame path, the carbonizing flame path and the cooling water path. The biomass pyrolysis furnace has the advantages that the preheating zone and the carbonizing zone are arranged independently, the purity of target products can be improved, and high-quality biochar can be obtained through the semicircular vertical tubes and the baffle plates.

The invention relates to a reactive distillation method and device for 4EMD (4-ethyl-2-methyl-1,3-dioxolame) production. A reactive distillation tower comprises a distillation section and a reactive distillation section, wherein a 1,2-butanediol feed port is formed in the top of the reactive distillation section, acetaldehyde is fed into tower bottom, a reaction product is produced from tower top and enters an acetaldehyde recovery tower for acetaldehyde separation, a 4EMD and water mixture after acetaldehyde separation enters a distillation tower through a tower top phase splitter or one tower plate of the 4EMD distillation tower, by means of the tower top phase splitter, an organic phase flows back, an aqueous phase is produced, and a 4EMD product is obtained from the tower bottom. The method and the device have the advantages that the reaction and the separation coupling are performed in the same equipment simultaneously, so that the equipment investment can be saved, energy consumption can be reduced, the forward reaction is promoted, and a high reaction conversion rate is acquired. By means of the phase splitter arranged at the tower top, water can be removed very well, the 4EMD product with high purity is obtained, and meanwhile, the high recovery rate of the 4EMD product can be guaranteed.

The invention discloses a digital audio FM modulation circuit of a handheld ultrashort wave air radio. The circuit comprises a level regulator, an A / D converter, a digital audio equalizer, an MCU and a digital frequency modulation unit. The level regulator, the A / D converter, the digital audio equalizer and the digital frequency modulation unit are sequentially connected. The MCU is connected with the digital audio equalizer and the digital frequency modulation unit. The digital frequency modulation unit comprises a CPU processor, an SPI interface, a frequency offset reference value register, a voltage controlled oscillator and a frequency offset base coefficient register. The frequency offset reference value register, the voltage controlled oscillator and the frequency offset base coefficient register are connected with the CPU processor. The frequency offset reference value register is connected with the digital audio equalizer through the SPI interface. The voltage controlled oscillator and the frequency offset base coefficient register are connected with the MCU. The circuit can carry out accurate, fast and smooth frequency modulation processing on an audio signal, and is suitable for the demand of large data voice communication.

The invention discloses an equipment for continuous preparation of hydrogenated bisphenol A and a continuous preparation method of hydrogenated bisphenol A. The preparation method is as follows: mixing bisphenol A with a solvent, passing the material through a metering pump and a preheater, Add hydrogen together into a tower-type fixed-bed reactor and use a supported nickel-based hydrogenation catalyst for hydrogenation reaction to generate a hydrogenated bisphenol A crude product. The crude product undergoes secondary separation, and the hydrogen and solvent obtained from the separation are recycled, and the obtained product contains The hydrogenated bisphenol A crude product with a small amount of solvent is extruded into pieces by a vacuum screw extruder to obtain a hydrogenated bisphenol A product. The solvent obtained by vacuuming can be recycled. This preparation process can make the conversion rate of the hydrogenation reaction reach 100%. The purity is higher than 97%, the product purity is more than 98%, and it can be produced continuously. It has the characteristics of good hydrogenation effect, high production efficiency, high degree of automation, and low production cost, suitable for mass production.

A method for purifying the glyceryl triacetate belongs to the field of the separation and purification in the chemical industry and comprises the following steps: (1) the crude products of the glyceryl triacetate are first prepared and the acidity of the crude products is controlled to range from 0.003 per cent to 1 per cent; (2) the crude products are subject to the secondary treatment utilizinga film evaporator, the vacuum degree is controlled to range from 100Pa to 13,300Pa and the flow of the film evaporator ranges from 2 to 200kg / m<2> h; the film evaporator and the preheater are heated by the steam or heat conduction oil; when the steam is used for heating, the heating steam pressure of the preheater is controlled to range from 0.5 kgf / cm<2> to 1.5kgf / cm<2> and the steam pressure ofthe evaporator ranges from 2.0kgf / cm<2> to 4.0kgf / cm<2>; when the heat conduction oil is used for heating, the temperature of the heat conduction oil ranges from 120 to 160 DEG C. The process delivers high treatment efficiency, the quality purity of the obtained glyceryl triacetate is obviously enhanced, the acidity can be lowered to be lower than 0.002 per cent without causing any odor.

The invention discloses a diode selection element array structure manufacturing method. The diode selection element array structure manufacturing method includes forming shallow isolation grooves on a P-type semiconductor substrate at intervals, and forming blank posts among the shallow isolation grooves, wherein one of the blank posts is a P-tie blank post, and the rest are N-tie blank posts; filling the insulation layer in the shallow isolation grooves; forming an N trap on the P-type semiconductor substrate; burying a first P-type diffusion layer on the N trap; forming N-type diffusion layers on the N-tie blank posts, forming wolfram plugs on the N-type diffusion layers, and connecting the wolfram plugs with the N-type diffusion layers to form a first electrode of a diode; extending the P-tie blank posts to form second P-type diffusion layers, forming wolfram plugs on the second P-type diffusion layers, and connecting the wolfram plugs with the second P-type diffusion layers to form a second electrode of the diode; forming an N-type diffusion layer on the upper layer of one side of the N trap and forming another wolfram plug on the upper layer of the N-type diffusion layer and connecting the wolfram plug with the N-type diffusion layer to form a contact electrode of the N trap. The diode selection element array structure manufacturing method is simple in process, and manufacturing cost is saved; a diode selection element array structure formed by the manufacturing method is good in quality.