94 results about "Normal reaction" patented technology

The invention provides a ceramic core removal device which mainly structurally comprises a high-pressure reaction vessel 1, a stainless steel basket 3, a pressure pump 5, an air storage chamber 6, a foam disk 7, heating elements 8, a pressure release valve 9, a safety valve 10 and a lifting mechanism 11. In the use process of the ceramic core removal device, a large number of tiny bubbles are blown into an alkali solution 4 in a pressurizing manner and penetrate through various pores in a hollow blade 2 to reach a deep position of a ceramic core, a reaction product rapidly diffuses into the alkali solution by the high-speed scouring action of the bubbles on a solid-liquid interface reaction layer, contact of the alkali solution and the ceramic core is constantly ensured, normal reaction is ensured, and removal of the ceramic core is greatly accelerated.

The invention relates to a block type end plate structure of a PEMFC (Proton Exchange Membrane Fuel Cell). The structure comprises an insulating motherboard and n sub collector blocks (n is a positive integer equal to or larger than 2); grooves are formed on the insulating motherboard, the sub collector blocks are embedded in the grooves on the insulating motherboard, and after the surface on oneside of the insulating motherboard, on which the sub collector blocks are embedded, is integrally flatten-milled, a normal reaction gas flow field is curved; conductive metal collector bars vertically penetrating through the insulating motherboard are arranged on the sub collector blocks; one end of each collector bar penetrating through the insulating motherboard is connected with a current output conducting wire of the PEMFC; and a current mutual induction element is arranged on the conducting wire. Compared with the prior art, the invention has the distinguished advantage that the cell temperature can be flexibly controlled through circulating water, and the flow field is curved after tensioning and flatten-milling are performed, so that a similarity to a normal flow field plate is guaranteed. Anyhow, the design of the end plate realizes the blocking structure while a flow field plate, a cooling plate and a collector plate are integrated, and is a novel block type end plate structure for measuring current distribution.

The invention discloses a process for synthesis of asenapine. The asenapine is prepared through adopting a compound (18) as a key intermediate and carrying out the following steps that: 1.1, the compound 18 is subjected to a Ullmann reaction under a alkaline condition through adopting copper powder as a catalyst to generate a ether (19); 1.2, the ether (19) is subjected to a carbonyl reduction to obtain the target compound of the asenapine (1). The process has the following advantages that: cheap and available 2-bromobenzaldehyde is adopted as an initial raw material and is subjected to acondensation, a addition, a reductive amination and a intramolecular cyclization reaction, a aminomethylation, a open loop transposition and then loop closing, a demethylation and a Ullmann loop closing reaction to synthesize of the asenapine (1); cis-trans-isomer is subjected to a delicate transposition to obtain a trans-product, such that the process is simplified and easy to be operated; the raw material is easy to be obtained and has cheap price; each reaction is a normal reaction, and reaction conditions are mild; a total yield is substantially improved; production cost is reduced; a purity of the product is more than 99% through a detection by HPLC.

Monorail vehicle that travels on a non-featured rail with substantial profile variation and controls roll attitude, lateral location, and loading through judicious placement of the vehicle's center of gravity without using springs or suspensions. The vehicle has a bogie for engaging the non-featured rail so the center of gravity has a lateral offset r₁ from the rail centerline to produce a roll moment N_r determined by vehicle's mass and value of r₁. The center of gravity also has a vertical offset r₂. The bogie uses first and second assemblies for engaging the rail to produce a pair of surface normal reaction forces to thus control roll attitude and loading by the placement of the center of gravity, thereby enabling accurate alignment of the monorail vehicle.

The invention discloses a new technology for synthesizing AE-active ester with accelerant, which is made by condensation reaction in the triethyl phosphate and triethylamine solvent. The invention is characterized by the following: introducing pyridine with high hydroscopicity as the accelerant in order to accelerate the reaction proceeding according to the forward direction based on the original technology; changing the reaction solvent system (the mixed solvent which is comprised by acetonitrile and carrene according to (0.9-1.0):1); avoiding the problem of water content which is introduced by the new solvent; improving the normal reaction temperature; reducing the operation difficult; reducing the strength; improving the product efficient to more than 92%. The invention also achieves the recycling of the solvent by distillation.

A novel heat exchanger (FIG. 1) designed and fabricated based on dry ice-ethylene glycol (DIEG) bath 1 as the coolant mixture for the emergency core cooling system (ECCS) of the nuclear power systems to avoid core meltdown during the normal reactor shutdown or reactor scram in the emergency conditions.

This method is proposed to upgrade the safety systems including modified ECCS which utilizes fast non-water coolant emergency system by fast cooling of reactor pressure vessel (RPV) 31 based on dry ice+ethylene glycol slurry 1.

The invention discloses a method for preparing copper nanometer granules, which comprises the following steps: respectively preparing clear copper nitrate solution with concentration of 0.1-0.9 g/L, clear ethanolamine solution with concentration of 2-8g/L, and clear polyvinylpyrrolidone solution with concentration of 3-9g/L by taking low-molecular alcohol as solvent, mixing the three solutions into reaction liquid at the temperature of 60 DEG C to 80 DEG C for reaction until presenting a stable bronze color, and carrying out cooling, evaporation and drying to obtain copper nanometer granules;in the method, the reaction temperature is lower, the normal reaction can be carried out even at the temperature lower than 70 DEG C, the production cost is lower, the equipment is simple, the production is convenient, the average granule diameter of the obtained copper nanometer granules is no more than 10nm, and the copper nanometer granules are uniform monodisperse granules without binding, therefore, the material performance is better.

The embodiment of the invention relates to a calibration data correction method and electronic equipment thereof. The calibration data correction method comprises the following steps that: receiving an original dataset formed by multiple pieces of reaction data; through linear fitting, carrying out primary screening on the original dataset to obtain a primary-screening dataset; and through nonlinear fitting, carrying out secondary screening on the primary-screening dataset to obtain a corrected dataset. By use of the method, an original reaction curve dataset is subjected to coarse screening and fine screening in sequence, two fitting ways are used for iteratively removing and rejecting exceptional data which does not conform to a reaction tendency and a normal reaction rule, and the accuracy of a final calibration result is guaranteed.

The invention relates to a method for inhibiting hydrocracking temperature runaway by using reaction pressure. According to the present invention, before temperature runaway of a reactor bed layer is generated, reduction of the key parameter reaction pressure is utilized to timely interlock stopping of reaction material feeding and main gas of a heating furnace so as to reduce the temperature of reactor materials from the source, and achieve in advance braking of reactor temperature control, such that the heavy temperature runaway and pressure relief interlock caused by the reaction bed layer is avoided, wherein the reaction pressure is set at 80-88% of the normal reaction pressure; and the reaction furnace is directly stopped in the interlock manner when the reaction pressure is close to the critical point, such that temperature reduction on the feeding material of the reactor is achieved so as to inhibit temperature runaway possibly generated by the reactor bed layer.

The invention discloses a preparation method of alpha-ethyl furan carbinol, comprising the following order steps in sequence: (1) preparing furfuryl alcohol Grignard reagent by the catalytic reaction of chloroethane, magnesium and furfural; and (2) preparing the alpha-ethyl furan carbinol via the hydrolysis reaction of the furfuryl alcohol Grignard reagent. The method of the invention has the advantages of short process route, short feeding time, low raw material cost, high production capacity, good and stable product quality, normal reaction pressure, low reaction temperature, reliable and safe production and the like and is especially suitable for large-scale industrial production.

The invention discloses an airfoil type axial-flow stirrer, which comprises a stirring shaft, a hub and a propeller blade, wherein the hub is mounted on the stirring shaft; the propeller blade can be mounted on the hub removably or irremovably; the propeller blade of the stirrer has a smooth special distortion face, the cross section at any radius position is in an airfoil shape, the angle of pitch and blade width increase continuously from the end part to root part of the blade, and the design is based on a uniform pitch structure; and a plurality of isosceles trapezoid-shaped channels, which are vertical to the central line of the blade, are formed on the blade and are symmetrically distributed on the blade. The airfoil type axial-flow stirrer has the advantages that: the impact force applied by a fluid on the back of the stirring propeller blade face is reduced; the vibration of the stirrer is reduced; the axial circulation and flowing are reinforced; the flowing property of fluid in the reaction kettle is improved obviously; the liquid and solid phases are well separated; the stirring of the materials in the kettle is uniformly; and gases formed by reaction can be conveyed and allowed to escape smoothly to guarantee a normal reaction. In addition, the stirring power of the airfoil type stirrer is smaller than common airfoil propeller, so the energy consumption is low.

The invention discloses normal-temperature continuous production technology for a cetane number improver, which belongs to the technical field of the preparation of organic nitrate ester compounds, and comprises the steps of using nitramine or nitric acid and isooctanol to react under the action of a catalyst. The normal-temperature continuous production technology for the cetane number improver is characterized by changing concentrated sulfuric acid as the catalyst, using different proportions of the concentrated sulfuric acid, concentrated nitric acid and water to control different reaction temperatures and realize continuous production, returning waste acid to an acid distribution post for acid mixing according to the content of the acid, then circularly utilizing the waste acid, finally selecting a normal reaction temperature of between 8 DEG C below zero and 40 DEG C in order to the safety and the control of the purity and the yield of energy consumption and the like, and utilizing the proportion of acid mixing to control reaction rate to achieve optimum process conditions such as continuous recycling of the waste acid, continuous feeding nitrification and the like. The technology overcomes the disadvantages of unsteady quality of products, large potential safety hazard, high energy consumption and material consumption and the like, improves the yield, ensures that the quality of the products entirely and steadily reaches that of high-class products, and greatly improves the utilization efficiency of equipment.

The invention discloses a supported solid base catalyst, a preparation method and an appliance thereof for compounding novel biological diesel oil, which relate to a solid base catalyst, a perpetration method and a method for catalyzing and preparing novel biological diesel oil, and aim to solve the problems that existing homogeneous base catalysts are not high in reaction activity, can not be recycled, are complex in post-processing process, need to neutralize and wash reaction products, and leads to discharge a lot of waste water and pollute environment. The supported solid base catalyst comprises sodium aluminate, potassium fluoride, sodium fluoride, potassium fluoroaluminate and sodium fluoroaluminate. The preparation method comprises steps: 1 x-KF/NaAlO2 precursors are prepared; and 2 drying and calcining, thereby obtaining the supported solid base catalyst. The method for catalyzing and preparing the novel biological diesel oil is that reaction materials and catalysts are added into a reactor with a reflux condensation device, are stirred and reacted in normal reaction pressure and protection of nitrogen, and then are centrifugally separated, decompressed and distilled. The supported solid base catalyst can be used to catalyze and compound the novel biological diesel oil.

The invention discloses two types of catalysts for synthesizing methyl chlorosilane and a preparation method thereof. The two types of catalysts are prepared by taking metal copper powder as a raw material through the steps of oxidizing to remove surface impurities, deeply oxidizing to change substance structures, partially reducing and regulating product constituents, the catalyst I comprises the following constituents in percentage by weight: 15-30% of metal copper, 20-30% of cuprous oxide and 40-65% of copper oxide, and is used during normal reaction after a synthesis reaction is started, and the catalyst II comprises the following constituents in percentage by weight: 50-65% of metal copper, 25-35% of cuprous oxide and 5-20% of copper oxide, and is used during driving starting reaction in the early stage of synthesis reaction. The method disclosed by the invention has the advantages of low energy consumption, high efficiency, environmental friendliness, effectively reduced production cost, and more stable and complete reduction reaction; meanwhile, the prepared copper catalysts have the characteristics of high catalytic activity and selectivity, strong raw material adaptability and good overall indicators.

The invention discloses a preparation method for an aryl sulfonyl chloride derivative. The aryl sulfonyl chloride derivative is prepared through the following steps that firstly, an aryl derivative is slowly added in a mixture of chlorosulfonic acid and sulfur trioxide, 1-2 drops of acetic acid is dropwise added, the temperature is increased to 50-140 DEG C and is kept invariable, and a reaction is performed for 6-8 h; secondly, the temperature is lowered to 40-60 DEG C, phosphorus oxychloride is dropwise added, then the temperature is increased to 60-120 DEG C, and a heat preservation reaction is performed for 2-4 h; thirdly, after the complete reaction is achieved, the temperature is lowered below 20 DEG C, and the mixture is added into ice water for dilution; finally, solvent is added, and the aryl sulfonyl chloride derivative is prepared after distillation and filtration are performed. According to the preparation method, the reaction is stable, the demand quantity for the chlorosulfonic acid is little, the product yield is high, and the problem that in a normal reaction, sulphur is generated due to the fact that a disproportionated reaction takes place between the added phosphorus trichloride and sulfuric acid is solved; meanwhile, no hydrogen chloride gas is generated, aftertreatment is convenient, and pollution to the environment is little.

The invention relates to a method for preparing silica dioxide hollow microsphere with pattern on surface, comprising process of preparing mixed surface active agent, composite mould oil phase, emulsion, water phase, cogelled, swelling cogelled, mixing liquid of tetraethoxysilane and skellysolve C, silica dioxide high molecular compound microsphere with pattern on surface. The invention is characterized by rational design, feasible process, simple operation, normal reaction temperature and short reaction time. The prepared high molecular compound microsphere is characterized by rigid and stable inorganic material, flexible organic material, large specific surface area and smaller quantity, and wide application on biological medicine, damping of vibration, carrying catalyst, fast concentration and separation, sensing technology, environmental protection and ocean mining.

The invention relates to a method for improving selectivity of a catalyst. A catalyst selectivity regulation and control process is increased between a desulfurization process and a normal production process, and the catalyst selectivity regulation and control process is that activity catalytic raw materials are in contact with the catalyst for 24-96h in an atmosphere of activity catalytic gas under activity catalytic reaction conditions, wherein the activity catalytic gas comprises hydrogen gas and hydrogen sulfide, and based on the whole activity catalytic gas, the volume fraction of the hydrogen gas is not less than 70%, and the volume fraction of hydrogen sulfide is 0.2%-5%; and the normal production process is that gasoline raw material is in contact with the catalyst in the atmosphere which is rich in the hydrogen gas under normal reaction conditions to be in hydrogenation reaction. By adopting the method provided by the invention, the selectivity of the catalyst can be improved. Compared with the prior art, under the situation that the sulfur content in a gasoline product is the same, the olefin saturation rate is lower and the loss in octane number of a product is smaller.

The invention relates to a microporous membrane, concretely speaking, an approach of producing charge microporous membrane and its affinity basement membrane. By weight, use cellulose acetate of 5-9 percent as basic material. Mix polycation compound of 0-15 percent in acetone/ dimethyl formamide of 45-70 percent. Use polyisocyanate of 0-0.8 percent as crosslinking agent to react. Add glycerin as additive. After knifing, absorb moisture in temperature of 30-70deg.C and relative humidity of over 95 percent and volatilize impregnant misphasing gel for 1-30 minutes. Finally form membrane and solidify. Merits of the invention lie in wide applied range, stable performance and normal reaction condition.

The invention discloses a drum adhering force adjusting method for a chassis dynamometer for a vehicle. The adjusting method includes adding weight on the vehicle to be tested. The invention also provides a vehicle test method employing the chassis dynamometer. According to the invention, the drum adhering force can be adjusted in a condition that the drum surface adhering indexes of the drum remains unchanged. By adopting the technical scheme of adding weight on the to-be-tested vehicle, namely, by adding the normal reaction on a driving wheel of the vehicle for guaranteeing the adhering force on the surface of the drum, slippage of the wheel on the drum during a test process is avoided.

The invention discloses a new process for synthesis of asenapine. The asenapine is prepared through adopting a compound (18) as a key intermediate and carrying out the following steps that: 1.1, the compound 18 is subjected to a Ullmann reaction under a alkaline condition through adopting copper powder as a catalyst to generate a ether (19); 1.2, the ether (19) is subjected to a carbonyl reduction to obtain the target compound of the asenapine (1). The process has the following advantages that: cheap and available 2-bromobenzaldehyde is adopted as an initial raw material and is subjected to a condensation, a addition, a reductive amination and a intramolecular cyclization reaction, a aminomethylation, a open loop transposition and then loop closing, a demethylation and a Ullmann loop closing reaction to synthesize of the asenapine (1); cis-trans-isomer is subjected to a delicate transposition to obtain a trans-product, such that the process is simplified and easy to be operated; the raw material is easy to be obtained and has cheap price; each reaction is a normal reaction, and reaction conditions are mild; a total yield is substantially improved; production cost is reduced; a purity of the product is more than 99% through a detection by HPLC.