31results about How to "High economic utilization" patented technology

The invention relates to a supported nickel-based catalyst and a preparation method thereof. The active ingredient of the catalyst is nickel, and the nickel accounts for 5 to 30 percent of the total mass of the catalyst; and silica, active carbon, silica gel, a molecular sieve or alumina is taken as a carrier. In the preparation method, the active ingredient is supported on the surface of the carrier by a solid-phase dispersion method, the dispersibility of the active ingredient is improved and the interaction force between the active ingredient and the carrier is enhanced through the heat treatment process, and a catalyst precursor is reduced through the liquid phase reduction process. Compared with the traditional immersion method, the method has the advantages that: a filtering and drying step is saved, the operating process is more simple, the catalyst preparation cost is low, the energy consumption is low, the method is environment-friendly, the activity of the prepared catalyst is equal to that of the catalyst prepared by the immersion method, and the method is suitable for industrial amplification production of the supported nickel-based catalyst.

The invention relates to electrics and electron, in particular to the technical field of the power supply. After the public terminal G6 of a series inductive resistance choke L6 secondary multi-winding rectifying circuit in an isolation transformer secondary later voltage-reducing switch voltage-stabilizing power supply is superimposed on the high-voltage end of the main output end capacitor C6 of a series switch power supply for forming a bootstrapping output end, the fundamental characteristics for the multi-winding voltage-stabilizing output is formed. The innovation of the invention optimizes the optimal economic efficiency and overall power efficiency of a front-grade isolation transformer coil, reduces the front-grade isolation transformer T secondary multi-winding phenomenon, and significantly reduces the overall cost.

The invention provides an intelligent power distribution network user access scheme management method based on a big data technology. The method comprises the following steps that: a power supply capability map is drawn; an optimal user access scheme is obtained; and the power supply capability map is adjusted. The invention also provides an intelligent power distribution network user access scheme management system based on the big data technology. The system comprises a power distribution network equipment information module, an equipment available capacity module, a power supply capabilitymap module, a new user access discrimination module, an equipment load prediction module, and a power supply capability map adjustment module. With the intelligent power distribution network user access scheme management method and system based on the big data technology of the invention adopted, the maximum monthly operation load of equipment in the next year can be accurately predicted, the monthly available capacity of the equipment in the next year can be reasonably calculated; the optimal user access scheme is formulated according to the monthly available capacity; and therefore, the economy and scientificity of the user access scheme are ensured, the operation risks of the equipment are effectively reduced, and the utilization rate of the equipment is improved.

The invention discloses a method for recycling a by-product 2-ethylacraldehyde from a reaction process of preparing trimethylolpropane by a condensing and hydrogenating method. The method comprises the following steps of: taking the main by-product 2-ethylacraldehyde (EA) generated at a condensation stage of aldol in trimethylolpropane prepared by condensing and hydrogenating method as the raw material; separating and reacting the raw material with formaldehyde under the alkaline condition; and finally, obtaining trimethylolpropane (TMP). According to the invention, more than 90% of the EA can be basically transformed and the selectivity of the generated TMP is more than 90%; the method improves the economic utilization of the raw material and the reaction cost is reduced as well. The method provided by the invention also can directly utilize the commercial grade EA and formaldehyde to react under the alkaline condition so that the EA can be transformed into TMP.

The invention discloses a preparation method and a purification method of heterocyclic nitrogen sulfides. The preparation method includes the steps: taking N-pyridyl pyrrole or pyridyl indole and disulfide ether as substrates, taking dimethyl sulfoxide as solvents, performing heating reaction on the N-pyridyl pyrrole or pyridyl indole, the disulfide ether and the dimethyl sulfoxide under catalysisof transition metal copper salt and the action of a ligand in the air environment to prepare crude products, and performing filtration and solvent removal on the crude products to obtain remainders;performing silica column chromatography on the remainders, spraying and washing the remainders by the aid of eluting liquid, collecting effluents, combining the effluents containing products, performing concentration and solvent removal on the combined effluents, and performing vacuum drying to obtain a target product. The preparation method has the advantages of simple technological process, lowcost and high yield.

The invention relates to the technical field of mechanical equipment, in particular to a centrifugal polishing machine. The machine comprises a supporting plate. The upper surface of the supporting plate is symmetrically provided with two limiting columns and a roller movably arranged between the two limiting columns. The roller is internally provided with a polishing barrel which is eccentrically arranged with the roller. The roller and the polishing barrel are connected through a plurality of springs different in length. The side wall of the polishing barrel is provided with an inlet capable of allowing a workpiece to be contained inside. The upper surface of the supporting plate is further symmetrically provided with two drive mechanisms used for driving the roller to roll. The centrifugal polishing machine is low in cost, high in polishing efficiency and capable of being widely used on various occasions where polished workpiece products are needed.

The invention relates to the technical field of raising devices, in particular to a hatching device for chicken raising. The hatching device for chicken raising is provided with multiple hatching bodies, wherein egg arranging racks and a plurality of heating mechanisms evenly distributed on the inner walls of the egg arranging racks are arranged inside the hatching bodies, the upper portions of the hatching bodies are further provided with fan mechanisms facing the egg arranging racks, and cooling mechanisms are arranged on the peripheries. The hatching device for chicken raising is compact in structure and high in hatching efficiency and can be generally applied to various egg hatching occasions.

The invention provides a preparation method for a polymercaptan compound containing a 1,3,5-trithian structure and an application thereof. The preparation method comprises the step of triggering 2,4,6-trichlorine alkyl-1,3,5-trithian with a structure shown as formula II and sodium bisulfide to react under the existence of phase transfer catalyst, thereby acquiring the polymercaptan compound containing the 1,3,5-trithian structure shown as formula I. The method is simple, is free from three-waste emission, meets environment-friendly requirement and is higher in reaction conversion rate. Besides, the method has higher selectivity and higher economic use ratio of atoms; the prepared product has higher refractive index and higher abbe value; a polymer compound formed by curing the polymercaptan compound containing the 1,3,5-trithian structure shown as formula I and diisocyanate has higher refractive indexm, higher abbe value and higher heat resistance.

The invention relates to the technical field of riveting machines, in particular to an automatic double-riveting machine provided with a windshield wiper framework having a frame. The automatic double-riveting machine is provided with a bottom board. The left side of the upper surface of the bottom board is slidably equipped with a left riveting mechanism. The right side of the upper surface of the bottom board is fixedly equipped with a right riveting mechanism. The left riveting mechanism comprises two linear sliding rails arranged in parallel and an installing block of the left riveting mechanism slidably installed on the upper parts of the linear sliding rails. Two sides of the installing block of the left riveting mechanism are symmetrically equipped with speed reducers. The bottom ofthe installing block of the left riveting mechanism is located at a ball screw in the middle position of the two linear sliding rails. The upper surface is fixedly equipped with the left riveting mechanism. The left riveting mechanism comprises a three-coordinate sliding rail. Punch fixing boards are fixedly installed on the three-coordinate sliding rail. The upper surfaces of the punch fixing boards are fixedly equipped with riveting punch lower dies. Riveting punch upper dies are arranged right above the riveting punch lower dies. A spring support is arranged between the riveting punch upper dies and the riveting punch lower dies. With the automatic double-riveting machine, the width of the working stroke is effectively adjusted. The automatic double-riveting machine is used widely.

The invention discloses an automatic cutting device for heat dissipation fins. The automatic cutting device of the heat dissipation fins comprises a supporting frame and a cutting mechanism which is mounted on the side surface of the supporting frame and is used for cutting the heat dissipation fins, wherein two transverse sliding rails are symmetrically arranged on the front and rear sides of the upper surface of the supporting frame; a working tabletop is arranged on the two transverse sliding rails in a sliding manner; two longitudinal clamps for clamping the heat dissipation fins abutted to the front end of the working tabletop or the rear end of the working tabletop are arranged on the left and right sides of the upper surface of the working tabletop; and clamping motors for clamping the longitudinal clamps and screw rods located on the front and rear sides of the clamping motors are arranged on the outer sides of the two longitudinal clamps. The automatic cutting device is reasonable in structural design and high in automation degree; an operating method is simple, the edge cutting effect is obvious, and the working efficiency is high; and the automatic cutting device can cut the heat dissipation fins of various specifications and sizes, completely meets occasions with various machining scales for producing the heat dissipation fins, and is relatively high in economical utilization rate.

The invention relates to the technical field of intelligent juicer parts, in particular to an intelligent juicer BIB material package connector and an operation method thereof. The intelligent juicer BIB material package connector comprises a BIB material package bottle cover matched with a discharge connector of a BIB material package. A piston rod is inserted in an inner hole of the BIB material package bottle cover and sleeved with a spring. A juice guide pipe is clamped at the head of the BIB material package bottle cover. The discharge end of the juice guide pipe is sleeved with a silica gel pipe. The other end of the silica gel pipe is connected with a peristaltic pump. The intelligent juicer BIB material package connector is simple in structure, convenient to detach and assemble, low in use cost and high in economic utilization rate; meanwhile, the method for operating the intelligent juicer BIB material package connector is quite simple, and operators do not need to meet the special skill requirement.

The invention relates to the technical field of cold drawing molds, and particularly relates to a cold drawing mold for producing seamless steel tubes. The cold drawing mold is provided with a cold drawing mold sleeve and a cold drawing mold core, wherein the cold drawing mold sleeve is internally provided with a left rectangular chamber and a right dovetail-shaped chamber communicated with the left rectangular chamber; the cold drawing mold core enters from the left rectangular chamber and is clamped by the right dovetail-shaped chamber; the cold drawing mold core is internally provided with a left isosceles trapezoid chamber and a right rectangular chamber communicated with the left isosceles trapezoid chamber, and is fixed in the cold drawing mold sleeve by a plurality of fastening bolts; the width of the left rectangular chamber is greater than or equal to the diameter of the cold drawing mold core; the left side width of the right dovetail-shaped chamber is less than the diameter of the cold drawing mold core. The cold drawing mold for producing the seamless steel tubes can be used for producing the seamless steel tubes with different diameters, and is relatively high in universality.

The invention discloses a preparation method of an isoquinoline phosphite ester compound. The method comprises the following steps: selecting an isoquinoline nitrogen compound as a substrate, adding phosphite ester into the substrate, then taking 1, 2 dichloroethane as a solvent, and performing thermal reaction in the air with the combined action of an alkaline condition and a copper catalyst, soas to obtain a crude product. Through the adoption of the method, the production is low, the compound yield is high, and the method is applicable to industrial promotion.

The invention provides an ADC channel calibration method. The method comprises the steps: enabling a reference circuit to be externally connected to a first ADC channel of a single-chip microcomputer; acquiring a reference voltage and a reference quantized value corresponding to the reference circuit on the first ADC channel; starting the rest ADC channels on the single-chip microcomputer, and respectively measuring quantized values corresponding to the ADC channels so as to calculate and obtain calibration voltages of the ADC channels. According to the ADC channel calibration method provided by the embodiment of the invention, redundant ADC channels of the single-chip microcomputer are utilized, a reference source chip or circuit is additionally arranged, the problem that part of single-chip microcomputers are not provided with external reference sources is solved, the ADC sampling accuracy is improved, the method has little influence on the cost of the circuit, and the economic utilization rate is improved.

The invention discloses a thermoplastic plastic injection forming mold which comprises a fixed mold base plate, wherein a main runner bushing is arranged in the middle of the fixed mold base plate; a mold cavity plate is arranged at the bottom of the fixed mold base plate; a mold core fixing plate is arranged at the bottom of the mold cavity plate; a mold core is arranged between the mold cavity plate and the mold core fixing plate; a support plate is arranged at the bottom of the mold core fixing plate; two cushion blocks are symmetrically arranged at the bottom of the support plate; moving mold base plates are arranged at the bottoms of the two cushion blocks; a plurality of mounting holes are formed in the fixed mold base plate, the mold cavity plate, the mold core fixing plate and the support plate in a penetration manner; a limiting screw is mounted in each mounting hole; heads of screw rods of the limiting screws are in threaded connection with threaded holes in the fixed mold base plate; an inclined nest type pull rod which penetrates through the mold core and the mold cavity plate in sequence is arranged at the middle part of the upper surface of the support plate. The thermoplastic plastic injection forming mold is not only capable of releasing a solidified runner material smoothly, but also simple in structure, low in manufacturing cost and high in economic utilization rate.

The invention discloses a preparation method of an amide or ester compound, which comprises the steps of under the protection of inert gas, taking substituted carboxylic acid, an amine compound or an alcohol compound as a raw material, and reacting in an organic solvent in the presence of a phosphine oxide compound, an acyl chloride compound and organic alkali to generate the amide or ester compound. According to the preparation method, the phosphine oxide compound and the acyl chloride compound are used as condensing agents, the organic base is used as an acid-binding agent, substituted carboxylic acid and amine or alcohol react in the organic solvent to generate the amide or ester compound, the raw materials are cheap, easy to obtain, green and non-toxic, the green and environment-friendly requirements are met, the reaction rate is high, the yield is high, racemization is not prone to occurring, the atom economic utilization rate is high, the separation and post-treatment processes are simple and easy to operate, and the method is suitable for large-scale industrial production.

The invention discloses a graphene solar power generation system-based street lamp which comprises a machine seat and a lamp pole, wherein the lamp pole is fixedly mounted on the upper surface of the machine seat, and is of a hollow structure; a bent rod is fixedly mounted at the top end of the lamp pole; a graphene solar panel is arranged on the bent rod; a bracket is arranged at the upper part of the lamp pole; a lampshade is arranged at one end of the bracket; a switch is arranged inside the lampshade; a photosensitive resistor and a lamp holder are arranged on the lower surface of the outer part of the lampshade; and the switch is connected with the photosensitive resistor and the lamp holder through lead wires.

The invention discloses a universal molded case circuit breaker. Terminal numbers of an upper inlet wire of a molded case circuit breaker body are 1, 3, 5 and N from left to right, and terminal numbers of a lower outlet wire of the molded case circuit breaker body are 2, 4, 6 and N from left to right; the zero line wiring terminal corresponding to the terminal number N in the upper inlet line is communicated with the zero line wiring terminal corresponding to the terminal number N in the lower outlet line; the live wire wiring terminal corresponding to the terminal number 1 in the upper inlet wire is disconnected from the live wire wiring terminal corresponding to the terminal number 2 in the lower outlet wire; the live wire wiring terminal corresponding to the terminal number 3 in the upper inlet wire is disconnected from the live wire wiring terminal corresponding to the terminal number 4 in the lower outlet wire; and the live wire wiring terminal corresponding to the terminal number 5 in the upper inlet wire is disconnected from the live wire wiring terminal corresponding to the terminal number 6 in the lower outlet wire. The molded case circuit breaker is generally used in a single-phase system, a three-phase three-wire system and a three-phase four-wire system. The circuit breaker can be used in a single-phase system, a three-phase three-wire system and a three-phase four-wire system at the same time, and can be universal without changing the internal circuit and the structure of the circuit breaker.

The invention discloses a preparation method and a purification method of heterocyclic nitrogen sulfides. The preparation method includes the steps: taking N-pyridyl pyrrole or pyridyl indole and disulfide ether as substrates, taking dimethyl sulfoxide as solvents, performing heating reaction on the N-pyridyl pyrrole or pyridyl indole, the disulfide ether and the dimethyl sulfoxide under catalysisof transition metal copper salt and the action of a ligand in the air environment to prepare crude products, and performing filtration and solvent removal on the crude products to obtain remainders;performing silica column chromatography on the remainders, spraying and washing the remainders by the aid of eluting liquid, collecting effluents, combining the effluents containing products, performing concentration and solvent removal on the combined effluents, and performing vacuum drying to obtain a target product. The preparation method has the advantages of simple technological process, lowcost and high yield.

The invention discloses a preparation method for a trifluoromethyl benzothiophene derivative and a purification method for a product of the preparation method. The preparation method comprises the steps that an alkynol compound containing methyl fluoride building blocks or a derivative of the alkynol compound is taken as a substrate, disulfide is added into the substrate, and a crude product is prepared through a heating reaction under the nitrogen atmosphere of an elementary substance iodine, benzoyl peroxide and an iron catalyst by taking a nitromethane solution as solvent. The crude product is purified through the steps that filtering, iodine removing and solvent removing are performed on the crude product to obtain residua; chromatography is performed on the residua by adopting a silicagel column, elution is performed through eluent, and effluent is collected; the effluent containing the product is merged; concentrating and solvent removing are performed on the merged effluent, and vacuum drying is performed to obtain the target product. The preparation method and the purification method have the advantages of being simple in technological process, low in cost and high in yield.

The invention discloses a pipelization preparation method and device for 2-(4-bromomethylphenyl)propionic acid and belongs to the technical field of pharmaceuticals. On one hand, the invention provides the pipelization preparation device for 2-(4-bromomethylphenyl)propionic acid, and the device comprises two tubular photoreactors internally provided with light sources, two mixers, three storage devices, three metering pumps, two water circulating pumps, two water bath kettles and one crystallization kettle. On the other hand, the invention provides the method for preparing 2-(4-bromomethylphenyl)propionic acid by using the device, and the method is simple in operation, mild in reaction condition, simple in aftertreatment, low in waste gas, waste water and waste residue production, high in atom utilization ratio, low in cost and high in economic benefit and is a green and environment-friendly process suitable for industrial production.

The invention relates to the technical field of heat treatment furnaces, particularly a combustible-gas heat treatment furnace for producing seamless steel tubes, which is provided with a thermal insulation furnace shell, wherein the top of the thermal insulation furnace shell is provided with an inlet; the inlet is provided with a sealed vacuum furnace door; an alloy vacuum chamber prepared from circulating drum tubes is arranged in the inner cavity of the thermal insulation furnace shell; a cavity formed between the thermal insulation furnace shell and alloy vacuum chamber is a combustion chamber; the left and right sides of the thermal insulation furnace shell are respectively provided with a circulating motor; and the output end of each circulating motor is provided with a circulating fan positioned in the combustion chamber. The combustible-gas heat treatment furnace for producing seamless steel tubes has the advantages of compact structure, high universality and high economic utilization ratio, and can be used for producing seamless steel tubes with different structures and performance requirements.