40results about How to "Reduce high temperature requirements" patented technology

The invention relates to a synthetic method of an anti-tumor medicine, namely N-[2-[[2-(dimethylamino) ethyl] methyl amino]-4-methoxy-5-[[4-(1-methyl-1H-indole-3-yl)-2-pyrimidyl] amino] phenyl]-2-acrylamide (AZD9291) and a key intermediate of the anti-tumor medicine. The synthetic method comprises the following steps: performing Boc acid anhydride protection on 4-fluoro-2-methoxy-5-nitroaniline to obtain 4-fluoro-2-methoxy-5-nitroanilino tert-butyl formate, then reacting with N,N,N'-trimethylethylenediamine to obtain 4-(N,N,N'-trimethylethylenediamino)-2-methoxy-5-nitroanilino tert-butyl formate, then reducing to obtain 2-(N,N,N'-trimethylethylenediamino)-4-methoxy-5-tert-butyl carbamate phenylamine, then completely reacting with acryloyl chloride and directly removing a Boc protecting group to obtain 2-methoxy-4-N,N,N'-trimethylethylenediamino-5-acrylamido phenylamine, and finally reacting with 3-(2-chloropyrimidine-4-yl)-1-methylindole to obtain AZD9291. A process disclosed by the invention is simple in step, relatively high in yield, mild in reaction condition and easy for realization of industrial production.

The invention discloses a method for growing titanium dioxide particles on a base material. The method includes the steps that 1, acid liquor and a titanium containing compound are mixed and stirred uniformly to obtain hydrothermal reaction liquid; 2, the base material is put in the hydrothermal reaction liquid, hydrothermal reaction is carried out at the temperature of 70-120 DEG C, and the titanium dioxide particles grow on the base material. The acid liquor is at least one of hydrochloric acid solution, nitric acid solution, sulfuric acid solution and hydrofluoric acid solution. The titanium containing compound is tetra-n-butyl titanate and/or isopropyl titanate. The size of the titanium containing compound accounts for 3-14% of the hydrothermal reaction liquid. The preparing method for growing the titanium dioxide particles on the base material is simple, the raw materials are easy to obtain, titanium dioxide firmly grows on the base material, and the crystal form and size of the titanium dioxide particles can be controlled to obtain high photocatalytic efficiency.

The present invention relates to a ramjet engine comprising an air inlet channel (14), a combustion chamber (5) and a tail jetting tube, wherein an air drainage structure is arranged at the inlet end of the air inlet channel (14) and comprises a high-pressure air input pipe (2), high-pressure air cavities (3) and nozzles (1); the high-pressure air cavities (3) are connected onto the air inlet channel (14); the high-pressure air in the high-pressure air input pipe (2) enters the high-pressure air cavities (3) and enters the air inlet channel (14) through the nozzles, thereby implementing the effect of introducing a large amount of air. According to the ramjet engine, the air drainage structure is arranged in the air inlet channel; the high-pressure air generated by gasifying a small amount of liquid air is jetted and is used for driving the surrounding air to output a large amount of low-pressure airflow at one end at a high speed, so that the start of the ramjet engine under the static pressure is implemented; the operation stability of the ramjet engine of an aircraft using the engine in a stall condition is achieved.

The invention discloses a gas filtration device, which can facilitate gas filtration through heating gas entering the device. The gas filtration device comprises a casing and a filter element which is mounted inside the casing and is a conductor, wherein the casing is connected with the filter element in an insulated manner to form a first space and a second space which are separated from each other; the gas to be filtered is conveyed to the first space, the gas after filtration is conveyed to the second space; a positive pole connecting end and a negative pole connecting end are arranged on the filter element; during filtration, the positive pole connecting end and the negative pole connecting end are connected with a positive pole and a negative pole of a power supply respectively to form a closed circuit so as to enable the filter element to form a filtration component serving as an electric heating body; the heating power of the electric heating body can enable the temperature of the gas at the gas inlet lower than or equal to the temperature of the gas at the gas outlet; even the gas to be filtered contains substances which is condensed due to a low temperature, the holes of the filter element are not blocked by the precipitation of the substances during the filtration.

The invention provides an ejector and a gas stove provided with the ejector, wherein the inner wall of the ejector is good in gas guiding effect. According to the ejector, a coating is arranged on at least part of the inner wall of the ejector, wherein the coating is high-temperature resisting and the surface of the coating is smooth. The probability of the occurrence of turbulence of gas can be obviously reduced when the gas flow through the ejector, and then the gas is enabled to flow smoothly.

The invention provides methods for preparing transition metal monoxide powder, target material and film. The methods comprise the following steps: transition metal M powder and transition metal M oxide powder in a mole ratio being 1:1-1.2:1 are taken as reaction raw materials and sufficiently mixed with alkali halide with mass being 0.5-2.5 times, preferably, 0.5-2 times of the total mass of the reaction raw materials, the mixture is packaged in a reactor in a vacuum manner and reacts at 900-1,100 DEG C for 5-10 h, and the transition metal monoxide powder is obtained; the transition metal monoxide powder is subjected to spark plasma sintering, and the transition metal monoxide target material is obtained; a film grows on the transition metal monoxide target material, and the transition metal monoxide film is obtained. The transition metal monoxide powder, target material and film can be prepared rapidly at low temperature with the methods.

The invention discloses a tungsten yttrium cathode for a magnetron of a microwave oven. The tungsten yttrium cathode is characterized by comprising the following components in percentage by weight: 0.3 to 3 percent of yttrium, and the balance of tungsten. The invention also discloses a preparation process for the tungsten yttrium cathode for the magnetron of the microwave oven. The tungsten yttrium cathode has brittleness and high temperature performance of products, enhances the plasticity of the products, has good working performance, high plasticity, low production cost and no radiation, reaches the same working effect and greatly reduces the working temperature, so that the tungsten yttrium cathode can greatly reduce the requirements of high temperature resistance of electrode metal materials, meets the requirements on environmental protection, and obviously reduces the manufacturing cost at the same time.

The invention provides a water-soluble graphene electric-conduction ink and a preparation method thereof, wherein the water-based graphene electric-conduction ink composite material comprises water-soluble graphene powder, a linking resin material, an auxiliary agent and a solvent. According to the present invention, the large-batch water-soluble graphene electric-conduction ink can be prepared according to the experimental method of the present invention; deionized water is used as the solvent to replace the traditional organic solvent, the linking resin is selected, and the ratio is used, such that the water-soluble graphene electric-conduction ink having characteristics of good electric conductivity, good toughness, good compression molding and good impact resistance and meeting the adhesion requirement is blended; based on the excellent electric conductivity of the graphene component, the electric conduction stability of the product is increased, and the resistivity is reduced; andthe disadvantages of environment pollution and high cost of the traditional electric-conduction ink are overcome, and the water-soluble graphene electric-conduction ink is expected to be mass-produced.

The embodiment of the invention discloses a die bonding method of an LED chip and an LED panel. The die bonding method comprises the following steps: S10, placing an array substrate comprising a plurality of bonding pads in a first cavity; s20, coating the bonding pad with an adhesive, wherein the adhesive comprises glue and conductive particles dispersed in the glue; s30, the LED chip is placed on the bonding pad coated with the adhesive; s40, compressing the adhesive to enable the conductive particles to be conducted in the thickness direction of the array substrate; and S50, curing the adhesive. According to the LED chip die bonding method provided by the embodiment of the invention, the conductive particles are dispersed in the glue to replace solder paste in the prior art to realize die bonding of the LED chip, so that on one hand, the high-temperature process of solder paste reflow soldering can be avoided, the high-temperature-resistant requirement on the LED chip and an array substrate selected material can be reduced, and the residual thermal stress influence of the high-temperature process can be reduced; on the other hand, different glue materials can be selected according to different application requirements, the material selection is diversified, and the flexible application degree of the process is high.

A system of industrial pulverized - coal fired boiler in small or medium size comprises stokehole pulverizing unit including high pressure air pump , baffle separator , coal supplying pipe , etc ; pulverized coal supplying unit including coal conveying pipe , blanking pipe and air supplying pipe ; pulverized coal combustion unit including central air pipe , primary air pipe , internal and external secondary air pipe ; boiler body including shell , heating stove , two and three returning pipes ; dust removal and desulfurization unit including cyclone separator , bag-duster, desulfurization tower, exhaust fan and chimney. Advantages: fine pulverized coal with grain size above 200 mesh, good low-temp. combustion effect and high heat efficiency

The invention provides a thermal insulation straight hole injection-production Y joint and a using method thereof. An inner core is arranged in a shell; the tail end of a lifting nipple extends into the shell and is in threaded connection with the inner wall of the head end of the inner core; an upper guiding shoe is installed at the head end of the shell, the tail end of the upper guiding shoe is fixedly welded to the head end of the inner core, and the tail end of the shell is fixedly welded to the tail end of the inner core; a filler cavity is formed between the inner wall of the shell and the outer wall of the inner core, and a filler is filled in the filler cavity. The tool can realize internal and external heat insulation in a steam injection process, provides an internal steel wire or cable operation channel, and can be matched with a production blanking plug to carry out oil extraction production.

The invention discloses a steam turbine and a method for reducing the operating temperature of an outer cylinder of the steam turbine. A high temperature steam outlet channel and a low temperature steam return channel are arranged between the front end steam sealing interval and the back end through flow stage of the steam turbine, a steam inlet of the high temperature steam outlet channel is formed in a steam sealing body on the front end steam sealing interval, and a steam outlet of the high temperature steam outlet channel is formed in the back end through flow stage; and a steam inlet of the low temperature steam return channel is formed in the back end through flow stage, located on the inner side of the steam outlet of the high temperature steam outlet channel, and separated by morethan one through flow stage, and the steam outlet of the low temperature steam return channel is formed in the steam sealing body of the front end steam sealing interval, located on the outer side ofthe steam inlet of the high temperature steam outlet channel, and separated by more than one ring of steam sealing body. The outer cylinder no longer bears the higher operating temperature and can bemade from the low-grade materials, the requirements of the resistance to high temperature of the outer cylinder are reduced, the costs of production and manufacturing are greatly reduced accordingly,and the high economic benefits are achieved.

The invention relates to the technical field of purification of industrial boiler flue gas, in particular to a preparation method of a low-temperature denitration filter material based on a water quenching process. The preparation method comprises the following steps: uniformly mixing and stirring vanadium pentoxide powder, an organic modifier and cerous nitrate hexahydrate powder to prepare a low-temperature denitration catalyst precursor emulsion; adding the low-temperature denitration catalyst precursor emulsion into a reaction kettle, and soaking filter cloth in a reaction kettle in vacuum; and finally, drying the soaked filter cloth, and carrying out medium-temperature calcination to obtain the low-temperature denitration filter material. A preparation method of the low-temperature denitration catalyst precursor emulsion comprises the following steps: adding deionized water into the reaction kettle, heating and melting vanadium pentoxide powder, quickly pouring the molten vanadiumpentoxide powder into the deionized water, and conducting ultrasonic stirring and dissolving; adding an organic modifier into the solution, and performing full stirring and uniform mixing to obtain astable vanadium pentoxide emulsion; and finally, adding cerous nitrate hexahydrate powder into the solution, and conducting stirring until the cerous nitrate hexahydrate powder is completely dissolved to obtain the low-temperature denitration catalyst precursor emulsion.