37results about How to "Avoid separation steps" patented technology

Fabrication method of GaN power LED with electrodes formed by composite optical coatings, comprising epitaxially growing N—GaN, active, and P—GaN layers successively on a substrate; depositing a mask layer thereon; coating the mask layer with photoresist; etching the mask layer into an N—GaN electrode pattern; etching through that electrode pattern to form an N—GaN electrode region; removing the mask layer and cleaning; forming a transparent, electrically conductive film simultaneously on the P—GaN and N—GaN layers; forming P—GaN and N—GaN transparent, electrically conductive electrodes by lift-off; forming bonding pad pattern for the P—GaN and N—GaN electrodes by photolithography process; simultaneously forming thereon bonding pad regions for the P—GaN and N—GaN electrodes by stepped electron beam evaporation; forming an antireflection film pattern by photolithography process; forming an antireflection film; thinning and polishing the backside of the substrate, then forming a reflector thereon; and completing the process after scribing, packaging and testing.

The invention discloses an apparatus for preparing synthetic gas with adjustable H2 / CO proportion by methane-rich gas and a method thereof. The apparatus comprises a fuel reactor, an air reactor, a first cyclone separator, a second cyclone separator, a material returning valve 1, a material returning valve 2 and a material returning valve 3; a bubbling fluidized bed is arranged at bottom of the fuel reactor, a lifting pipe is arranged at upper part of the fuel reactor; the bubbling fluidized bed is connected to the air reactor through the material returning valve 1, the upper part of the air reactor is connected to the first cyclone separator, a blanking tube of the first cyclone separator is connected to the lifting pipe through the material turning valve 2, the upper part of the lifting pipe is connected to the second cyclone separator, and the blanking tube of the second cyclone separator is connected to the lower part of the bubbling fluidized bed through the material turning valve 3. By adjusting the circulation volume of oxygen carrier and stay time in the bubbling fluidized bed, the reduction depth of the oxygen carrier in the bubbling fluidized bed can be controlled, proportion of H2 / CO at a synthetic gas outlet can be adjusted, subsequent synthesis technology is convenient, CO2 can be instantly separated and captured, and separating step can be avoided.

The invention relates to carrier particles for use in pharmaceutical compositions for the pulmonary administration of medicaments by means of dry powder inhalers. In particular, the invention relates to a novel technological process for obtaining a carrier modified so as to improve the efficiency of redispersion of active particles and hence increase the respirable fraction. After the treatment of the invention, the surface of said modified carrier particles can also be coated with a suitable additive so as to further improve the respirable fraction.

Polypropylene resin compositions are provided that are useful in the production of thermoformed articles and biaxially oriented polypropylene films (BOPPs), tapes and fibers. The resins of the present invention are blends of high crystalline (low solubles) polypropylene homopolymer and an ethylene / propylene random copolymer (RCP). These blends can be used to replace standard high solubles BOPP grade polypropylene homopolymers. In addition, the use of high crystalline polypropylene homopolymers in the blends imparts improved stiffness to the finished films while maintaining good processability of the blends. Such polypropylene compositions are effectively produced by in-reactor blending of a high crystalline propylene homopolymer and a propylene / ethylene random copolymer.

Polypropylene resin compositions are provided that are useful in the production of thermoformed articles and biaxially oriented polypropylene films (BOPPs), tapes and fibers. The resins of the present invention are blends of high crystalline (low solubles) polypropylene homopolymer and an ethylene / propylene random copolymer (RCP). These blends can be used to replace standard high solubles BOPP grade polypropylene homopolymers. In addition, the use of high crystalline polypropylene homopolymers in the blends imparts improved stiffness to the finished films while maintaining good processability of the blends. Such polypropylene compositions are effectively produced by in-reactor blending of a high crystalline propylene homopolymer and a propylene / ethylene random copolymer.

The invention discloses a process for preparing polysucrose. The process includes following steps: placing sucrose, distilled water and epibromohydrin after mixing into a device loaded with strong-base anion exchange resin; subjecting the mixture to polymerization reaction on the strong-base anion exchange resin at the temperature of 25 DEG C to 30 DEG C, heating to 60 DEG C to 65 DEG C for re-reaction, eluting the product after the reaction with the distilled water, and absorbing low cross-linked polysucrose of the product on the resin; purifying the product with acetone, and subjecting the purified product to graded eluting with anhydrous ethanol and selecting proper low cross-linked polysucrose; mixing the proper low cross-linked polysucrose with the distilled water and the epibromohydrin, dissolving dispersant into oil phase to be added to the mixture, adjusting the pH of the system with sodium hydroxide solution, performing water bath heating reaction, heating and solidifying; and filtering the obtained product and repeatedly washing with the anhydrous ethanol and the distilled water to get transparent polysucrose granule. The process for preparing the polysucrose is simple, easy to implement and higher in reaction activity, so that productivity and purity of the polysucrose are improved.

The invention relates to a sewage three-level effluent advanced treatment device. The device mainly comprises a coagulating basin, wherein the upper end of the coagulating basin is connected with a chemical dosing device, the water outlet of the coagulating basin is connected with a surface turbulence filtering device, the water outlet of the surface turbulence filtering device is connected with a photocatalytic degradation reaction device, the water outlet of the photocatalytic degradation reaction device is connected with a secondary nanometer aeration advanced oxidation device, and the water outlet of the secondary nanometer aeration advanced oxidation device is connected with an ultrafiltration device. The invention also discloses a sewage three-level effluent advanced treatment method.

The invention discloses a process for preparing polysucrose. The process includes following steps: placing sucrose, distilled water and epibromohydrin after mixing into a device loaded with strong-base anion exchange resin; subjecting the mixture to polymerization reaction on the strong-base anion exchange resin at the temperature of 25 DEG C to 30 DEG C, heating to 60 DEG C to 65 DEG C for re-reaction, eluting the product after the reaction with the distilled water, and absorbing low cross-linked polysucrose of the product on the resin; purifying the product with acetone, and subjecting the purified product to graded eluting with anhydrous ethanol and selecting proper low cross-linked polysucrose; mixing the proper low cross-linked polysucrose with the distilled water and the epibromohydrin, dissolving dispersant into oil phase to be added to the mixture, adjusting the pH of the system with sodium hydroxide solution, performing water bath heating reaction, heating and solidifying; and filtering the obtained product and repeatedly washing with the anhydrous ethanol and the distilled water to get transparent polysucrose granule. The process for preparing the polysucrose is simple, easy to implement and higher in reaction activity, so that productivity and purity of the polysucrose are improved.

The present invention specifically relates to a method for synthesizing organic compounds. In order to solve the problems in the current method for synthesizing o-phenylenediamine derivatives, such as complex process routes, many by-products that are difficult to purify, harsh reaction conditions, and serious environmental pollution, the present invention proposes an ortho-phenylenediamine derivative. The preparation method of phenylenediamine and its derivatives uses azobenzene and its derivatives as raw materials, synthesizes o-nitroazobenzene and its derivatives through the joint action of catalysts, oxidants, and nitrating agents, and then reduces them to o-nitroazobenzene and its derivatives by reducing reagents. The synthesis method of the phenylenediamine and its derivatives has the advantages of cheap and easy-to-obtain raw materials, simple and safe operation, short synthesis steps, simple purification, and no large amount of waste acid pollution.

The invention discloses an apparatus for preparing synthetic gas with adjustable H2 / CO proportion by methane-rich gas and a method thereof. The apparatus comprises a fuel reactor, an air reactor, a first cyclone separator, a second cyclone separator, a material returning valve 1, a material returning valve 2 and a material returning valve 3; a bubbling fluidized bed is arranged at bottom of the fuel reactor, a lifting pipe is arranged at upper part of the fuel reactor; the bubbling fluidized bed is connected to the air reactor through the material returning valve 1, the upper part of the air reactor is connected to the first cyclone separator, a blanking tube of the first cyclone separator is connected to the lifting pipe through the material turning valve 2, the upper part of the lifting pipe is connected to the second cyclone separator, and the blanking tube of the second cyclone separator is connected to the lower part of the bubbling fluidized bed through the material turning valve 3. By adjusting the circulation volume of oxygen carrier and stay time in the bubbling fluidized bed, the reduction depth of the oxygen carrier in the bubbling fluidized bed can be controlled, proportion of H2 / CO at a synthetic gas outlet can be adjusted, subsequent synthesis technology is convenient, CO2 can be instantly separated and captured, and separating step can be avoided.

The invention discloses a method for preparing o-nitrophenol, which comprises the following steps: nitrating phenol in mild conditions with silica loaded heteropoly acid cesium as a catalyst and low-concentration nitric acid as a nitrating agent; and successively performing extraction, distillation, steam distillation and recrystallization to obtain the o-nitrophenol. The silica loaded heteropoly acid cesium is formed by loading 1% to 40% (wt%) of heteropoly acid cesium to silica. The method for preparing o-nitrophenol has the advantages of high phenol conversion rate, high o-phenol nitration selectivity, easiness in preparation of the catalyst, high catalytic activity, easy separation of the catalyst after the action, reusability and broad application prospects.

The invention relates to the technical field of making wine, and particularly relates to jack fruit wine and a preparation method of the jack fruit wine. The method comprises steps of mixing peeled jack fruit with water and preparing into pulp; then adding amylase, cellulose and pectinase into the pulp for enzymolysis so as to obtain enzymatic hydrolysate; then mixing with water and sugar, sterilizing so as to obtain mixed liquor; adding saccharomycetes into the mixed liquor for anaerobic fermentation so as to obtain fermented liquid; filtering, sterilizing and ageing the fermented liquid so as to obtain the jack fruit wine. The preparation method is simple and has high use ratio of the fruit; the jack fruit wine prepared by the method has low alcoholic strength, rich jack fruit flavor and highlighted bouquet, and is fresh and cool.

The invention relates to a comprehensive utilization method of a coal-based oil residue. According to the method, a heated solid heat carrier is mixed with the coal-based oil residue by using a solid heat carrier method; the oil residue is heated and gasified and partially pyrolyzed by using sensible heat of high-temperature solids; heavy liquefied oil in the coal-based oil residue is recovered after being pyrolyzed and gasified; the residual un-gasified residue enters a hot blast heater of a circulating fluidized bed to fully burn; one part of heat generated by combustion is used for heating the solid heat carrier; the other part of heat is recovered through a waste heat boiler. The comprehensive utilization method is small in investment, easy to implement, and high in overall efficiency.

The invention relates to a soybean processing method, in particular to a superfine grinding method for a household soybean milk machine. The principle is: the soybean particles to be crushed are accelerated by the high-speed rotating blades, and the liquid-solid two-phase fluid flows through the fixed hole to be further accelerated, and a rack-shaped fixed knife is set in front of the hole facing the direction of the liquid flow. , the rack-shaped fixed knife is made of wear-resistant metal material, and its surface is made into shallow groove-like grids, with square micro-cutting edges between the grids. The material flowing through the surface of the rack-shaped fixed knife and the fixed knife The micro-cutting edge on the surface breaks the material due to friction and impact, which effectively avoids the possibility of the fixed knife being damaged by the collision of other high-speed rotating parts, and the cleaning of the fixed knife is also very convenient due to the shallow groove on the surface.

A method and device for preparing aluminum foam from a semi-solid slurry based on the blowing method. The method is: (1) adopting a near-liquidus method to prepare an aluminum alloy semi-solid slurry; (2) continuously transporting it into a crucible, and The coil is heated and kept warm; the partition divides the crucible into a liquid storage chamber and a foaming chamber, and a stirring paddle is set in the foaming chamber and a liquid-permeable hole is arranged at the bottom; (3) Stirring is carried out by the stirring paddle, and air is sprayed into the liquid-permeable hole, Foam is formed in the aluminum alloy semi-solid slurry; (4) The foam floats up to the outside of the crucible and collapses, gradually solidifies and is transported out by the traction wheel. The device includes a crucible and a partition inside, and there is a gap edge between the bottom edge of the partition and the inner bottom of the crucible; a stirring paddle is arranged in the foaming chamber, and a liquid-permeable hole is arranged at the bottom; the bottom blowing nozzle communicates with the liquid-permeable hole. The method and device of the invention avoid the separation step of the ceramic particles and the aluminum alloy material, and avoid the separation step of the ceramic particles and the aluminum alloy material in the recovery process, thereby reducing costs.

The invention discloses a liquid chromatography-mass spectrometry screening method for multi-target antithrombotic substances based on dried blood spot samples, which belongs to the field of drug screening. The method comprises the following steps: rehydrating the dried blood spot sample, optionally several substrates of key target enzymes involved in the thrombus formation process, mixing several substrate standard solutions with the substances to be screened and then adding them to the rehydrated In the dried blood spot sample, the reaction solution is processed and analyzed by liquid chromatography-mass spectrometry to screen for substances with multi-target antithrombotic activity. The screening method of the present invention is simple and quick to operate, has high accuracy and strong specificity, and can continuously analyze a large number of samples. The target of substance action is clear, which lays a theoretical foundation for the subsequent drug development. The reagents used are easy to obtain, the degree of operation automation is high, clinical promotion and popularization are easy, and the commercial value is high.