31results about How to "Adapt to the requirements of industrial production" patented technology

The invention relates to a catalyst used for hydrogenation of oxalate for preparing ethylene glycol and a preparation method thereof. The catalyst comprises copper, an auxiliary agent and zirconia serving as active ingredients and is characterized in that: the auxiliary agent is one or more of Al2O3, SiO2, TiO2, BaO, La2O3, MnO and ZnO; the active ingredients account for 10 to 45 percent of the weight of the catalyst; the zirconia accounts for 1 to 85 percent of the weight of the catalyst; and the auxiliary agent accounts for 5 to 80 percent of the weight of the catalyst. By using a more stable chemical structure formed by hydroxy of zirconium sol, the copper and other auxiliary agents, the specific surface area and pore size distribution of the catalyst are improved, the copper has high dispersion degree, and the anti-sintering capacity of the copper catalyst is also enhanced at the same time. The catalyst can stably run for over 3,200 hours in a skill-up test in the hydrogenation ofthe oxalate for preparing 300ml of ethylene glycol; the average conversion rate of the oxalate is over 99.9 percent; and the average yield of the ethylene glycol reaches over 94 percent.

The invention discloses a traditional Chinese medicine preparation for treating viral pneumonia and a preparation method and application thereof. The traditional Chinese medicine preparation is prepared from 1-2 parts of Semen Oroxyli, 4-6 parts of gardenia and 3-6 parts of Sophora flavescens. The preparation method is performed through water extraction, alcohol precipitation and countercurrent extraction. The traditional Chinese medicine preparation can be used for treating viral pneumonia, has antipyretic, anti-bacterial and anti-viral functions, and has the treatment effects of clearing heat and detoxifying, eliminating phlegm and stopping cough.

The invention discloses a preparation method of Abiraterone. The preparation method includes the steps of allowing dehydroepiandrosterone to engage in etherification reaction with RX to generate 3beta-alkoxy dehydroepiandrosterone (II), namely intermediate (II); allowing the intermediate (II) to engage in Grignard reaction with 3-pyridine magnesium bromide to obtain 17-(3-pyridine)-17-hydroxy-androstane-5-ene-3beta-alkyl ether (III), namely intermediate (III); allowing the intermediate (III) to engage in elimination reaction with 17-position hydroxy to obtain 17-(3-pyridine)-androstane-5, 16-diene-3beta-alkyl ether (IV), namely intermediate (IV); allowing the intermediate (IV) to engage in deprotection reaction to obtain Abiraterone (I). The preparation method is simple in process; raw materials are easy to obtain; quality is controllable; the preparation method is suitable for industrial production.

The invention provides an electrolytic synthesis method and equipment of 3,6-dichloropicolinic acid with high electrolytic efficiency. The electrolytic synthesis method includes: taking 3,4,5,6-tetrachloropicolinic acid as the main electrolytic raw material, placing the electrolytic solution in an electrolytic cell for electrolysis, neutralizing after the reaction, cooling and crystallizing, filtering, and drying to obtain 3 , 6-dichloropicolinic acid, in which the cathode of the electrolytic cell is automatically roughened by the voltage-stabilized and current-controlled silicon-controlled periodic commutation power supply. The electrolytic synthesis equipment includes a power supply, a batching tank, and an electrolytic tank. The power supply is a voltage-stabilizing thyristor periodic commutation power supply. The power supply is connected to a current commutator, and the current commutator is provided with a program control unit ; The positive pole of the power supply is connected to the anode of the electrolyzer, and the negative pole of the power supply is connected to the cathode of the electrolyzer. The electrolytic synthesis equipment solves many defects in the current 3,6-D electrolytic synthesis process, and has great practical value and social and economic benefits.

The invention relates to a black polyester fiber. The components of the black polyester fiber include a semi-dull polyester slice and a black polyester masterbatch, wherein the weight ratio of the semi-dull polyester slice to the black polyester masterbatch is (80-75):(20-25); the components of the black polyester masterbatch include the semi-dull polyester slice, a black masterbatch and a lustre-enhancing agent, wherein the black masterbatch accounts for 1%-10% of the weight of the black polyester fiber, and the lustre-enhancing agent accounts for 1%-3% of the weight of the black polyester fiber. The preparation method comprises the following steps: (1) blending the semi-dull polyester slice, the black masterbatch and the lustre-enhancing agent, and preparing to obtain the black polyester masterbatch; (2) blending the black polyester masterbatch and the semi-dull polyester slice, and finally spinning to obtain the black polyester fiber. The preparation method disclosed by the invention has the advantages of simple process and low cost; the obtained black polyester fiber has the advantages of good lustrousness, high color saturation and brighter appearance of a made fabric and higher application value in a clothing industry.

The invention discloses a method for manufacturing a vacuum insulation panel core material with high performance and low cost. The method comprises the following steps of: pulping glass fiber cotton which is produced by a centrifuge method; diluting; screening; performing dehydration molding; performing pressure roller sizing; performing vacuum negative pressure dehydration; drying; cooling; and cutting. In the manufacturing method, the glass fiber cotton which is completely produced by the centrifuge method is used as a raw material of the vacuum insulation panel core material with high performance and low cost, the coefficient of thermal conductivity of the produced vacuum insulation panel core is between 0.003 and 0.008 W / m.k, and the coefficient of heat insulation is greatly improved;the thickness of the panel core material is between 0.5 and 30 mm, and the thickness is thinner; and the glass fiber cotton with the diameter of 3.5 to 5 mu m and the length of 5 to 20 mm has low cost and low overall manufacturing cost, and the overall cost of the vacuum insulation panel is lowered.

The invention relates to a double helix differential definite quantity conveyer system and a control method of the double helix differential definite quantity conveyer system. The technical scheme includes that the double helix differential definite quantity conveyer system is connected by a double helix conveyor and a double helix differential definite quantity control device. The double helix conveyer comprises a machine body, a feed inlet, a discharge outlet, a main helix, a main helix motor, an auxiliary helix and an auxiliary helix motor. The double helix differential definite quantity control device comprises a main control unit, a weighing sensor, a man-machine interaction device, a switching value input and output module, a main helix driver and an auxiliary helix driver. The control method of the double helix differential definite quantity conveyer system comprises the following steps: digital filtering and feature analysis are conducted on collected weight value, weight information and impact information are respectively extracted, impact value introduced in the descending process of scattered materials in the weight information is filtered, and then estimated stagnating hollow weight value is added to the weight information, and estimated stagnating hollow weight value compensation is conducted. The double helix differential definite quantity conveyer system and the control method of the double helix differential definite quantity conveyer system have the advantages of effectively improving production efficiency, lowering production cost, and meeting accuracy requirements of automatic weighing of the scattered materials.

The invention discloses a production technology of an enhanced pull ring. A pull ring material strip is accurately fed through a step wheel. The production technology comprises the steps of punching, outer contour blanking, rivet hole shaping, edge pre-rolling, riveting plane forming, 90-degree edge rolling, final edge rolling, and final reinforced shaping; and the steps are carried out through a punching station, a large edge cutting station, an edge pre-rolling station, a 90-degree edge rolling station and a final edge rolling and shaping reinforcement station which are sequentially arranged. The invention further discloses the specific structure of the final edge rolling and shaping reinforcement station adopted as a dedicated device, a plurality of pull ring production lines are arranged between an upper die holder and a lower die holder, and the pull ring production lines comprise stepping conveyer belts, final edge rolling upper dies, final edge rolling lower dies, shaping reinforcement upper dies, final shaping lower dies, final flattening lower dies, and the like. The production technology has the advantages that the control is convenient, the operation is stable and the production efficiency is high, the enhanced pull ring with better quality is provided, and industrial mass production of the enhanced pull ring is achieved.

The invention discloses a preparation method of abiraterone acetate (I). The preparation method comprises the following steps of: based on dehydroepiandrosterone acetate as a raw material, performing addition reaction with 3-pyridyllithium to generate 17-(3-pyridyl)-17-hydroxy-androst-5-ene-3 beta-ol acetate (II); performing elimination reaction on the intermediate (II) under the action of a Burgess reagent to get abiraterone acetate (I). The preparation method has the advantages of simple process, easiness in obtainment of raw materials and controllable quality, and is suitable for industrial production.

The invention relates to polyester film base rubber matrix used in belt drive unit that is made up from natural rubber 60-80 portions, tetraphene rubber 1500 20-40 portions, carbon white 10-20 portions, half active black 15-30 portions, high abrasion resistant carbon black 30-50 portions, zinc oxide 2-8 portions, stearic acid 1-3 portions, anti-aging agent A 0.5-2 portins, anti-aging D 0.5-2 portions, adhesive RS 2-5 portions, adhesive A 1-3 portions, sulfur 1-4 portions, accelerant TT 0.01-0.05 portion, accelerant M 0.2-0.6 portion, accelerant DM 1-3 portions, and 203 tie resin 2-5 portions. The advantage of the invention is that it could adhere strongly because of the stickiness of the rubber on the surface of the film base. The improvement would sharply increase the working efficiency.

The invention discloses a traditional Chinese medicine preparation for treating rheumatoid arthritis and rheumatalgia and a preparation method and application of the traditional Chinese medicine preparation. The traditional Chinese medicine preparation adopts bulk drugs, according to a ratio, 1-3 parts of rhizoma corydalis, 1-3 parts of caulis sinomenii, 1-3 parts of erythrina barks and 1-3 parts of wenyujin rhizoma concisum. The adopted preparation method is an alcohol extraction and percoaltion method. The traditional Chinese medicine preparation is used for clearing heat, resisting inflammation and easing pain, and has the efficacy of clearing heat and detoxifying the body, resisting inflammation and easing pain.

The invention discloses a method for preparing diethylene glycol dibenzoate ester, which relates to a process for preparing diethylene glycol dibenzoate ester (DEDB) which functions as a plasticizer of organic chemical products. First, benzyl acid and diglycol with the weight ratio of 2: 1-1.1 are taken; then, protonic acid is taken as a catalyst, which has a weight 0.01-0.02 time of the overall weight of benzyl acid and diglycol; then, benzyl acid and diglycol are put into a reactor to be stirred and heated up to 90-200 DEG C, and the catalyst is added; then saturated hydrocarbons is added as a water-carrying agent, and the temperature is adjusted to 90-160 DEG C with heat preservation for 6-16h until the reaction is fully conducted; at the temperature, the water-carrying agent is vacuumed and removed to get a crude product of diethylene glycol dibenzoate ester; finally, alkali is added for neutralization to remove the catalyst; then, decolorization and leaching are carried out in sequence to get diethylene glycol dibenzoate ester. The method for preparing diethylene glycol dibenzoate ester has the advantages that as the saturated hydrocarbons water-carrying agent is used, under the catalysis of protonic acid, the reaction temperature is effectively lowered, thus inhibiting production of side products; the conversion rate reaches 98 percent; the yield coefficient is high; thecost of the product is low; and the method has strong industrial production value.

The invention relates to the field of organic chemistry, and particularly relates to the organic pharmaceutical field. More specifically, the invention relates to a method for synthesizing an intermediate through statins, aiming at overcoming the defects of high cost, complex process equipment, many by-products and the like in the prior art. According to the new method, 3-tertiary butyl dimethyl silica glutaric acid-1-mandelic acid ester is prepared by a one-step method, and cooperated with recrystallization, the intermediate synthesized by the statins is simply obtained at low cost, so that the method is suitable for industrialized production.