10results about How to "Reasonable workmanship" patented technology

This invention belongs to the field of hard carbon technology, specifically relating to a bamboo-based and lignin-based hard carbon composite material, its preparation method, and its applications. The process involves pretreating raw materials to obtain pretreated material; pretreating the pretreated material with an acidic oxidant to obtain acidic oxidant pretreated material; pre-oxidizing the acidic oxidant pretreated material to obtain pre-oxidized material; pre-carbonizing the pre-oxidized material under a protective atmosphere to obtain pre-carbonized material; pulverizing the pre-carbonized material to obtain pulverized material; acid washing followed by water washing to obtain purified material; soaking the purified material in acid, filtering, and drying to obtain soaked material; mixing the soaked material with a modifier, and high-temperature coating and carbonizing under a protective atmosphere to obtain bamboo-based coated hard carbon or lignin-based coated hard carbon. Mixing the two types of hard carbon and carbon coating yields a bamboo-based and lignin-based hard carbon composite material, which is used in negative electrode sheets and batteries. When applied to batteries, the hard carbon composite material of this invention can improve battery energy density.

The present application relates to a kind of methods and devices for preparing anhydrous hydrogen fluoride and sulfuric acid.The method comprises the following steps: removing impurities from industrial waste fluorosulfuric acid, mixing it with concentrated sulfuric acid to form a pretreated mixture; using microwave heating to rapidly heat the reactor, a static bed is arranged in the reactor; the pretreated mixture is passed into the upper surface of the static bed in the preheated reactor, the pretreated mixture is heated by microwave, and hydrogen fluoride and sulfur trioxide gas are generated by the decomposition of the pretreated mixture; hydrogen fluoride and sulfur trioxide are mixed and passed into low-temperature concentrated sulfuric acid to absorb sulfur trioxide gas; then passed into low-temperature condensing equipment, and liquid hydrogen fluoride is collected; the liquid hydrogen fluoride is purified by rectification; and the concentrated sulfuric acid that absorbs sulfur trioxide is evaporated and concentrated.The advantages are: using a "static bed + material" double-wave absorption system, achieving more uniform and stable temperature field distribution in the liquid layer of industrial waste fluorosulfuric acid, making the pyrolysis of industrial waste fluorosulfuric acid more efficient and stable.

The invention relates to a foundation pit structure construction method which comprises the following steps: step 1, a field manufacturing procedure: drilling an underground groove and manufacturing a reinforcement cage on site, then dynamically detecting the reinforcement cage by a detection mechanism, and meanwhile, installing a plurality of first sensors on the reinforcement cage by an installation mechanism; 2, a positioning and mounting procedure: after a detection mechanism dynamically detects and is matched with hoisting to adjust the mounting position of the first sensor, drilling a plurality of measuring holes in cooperation with a punching mechanism, and meanwhile, mounting a second sensor in each measuring hole in assistance of a mounting mechanism; and 3, a pouring pile-forming procedure is carried out, specifically, a punching mechanism supports deformation of the reinforcement cage to adjust stress, meanwhile, a mounting mechanism is assisted to mount a supporting cushion block to support the reinforcement cage to keep the stress, and under monitoring of a first sensor and a second sensor, the position and speed of cement pouring pile-forming are adjusted in real time. The problems that in the foundation pit construction process, manpower consumption is large, construction efficiency is low, the technology is unreasonable, and errors exist in monitoring data are solved.

A method for visible-light catalytic degradation of trace organophosphorus pesticides in aquatic environments involves first preparing functionalized nitrogen carbide materials via high-temperature pyrolysis. Then, zirconium-based MOFs are grown in situ on the surface of the functionalized nitrogen carbide materials, and a highly efficient heterogeneous composite photocatalyst is designed and synthesized. Finally, the trace organophosphorus pesticides in the aquatic environment are rapidly and stably degraded under visible light. The advantages of this invention are: the process is reasonable and easy to implement; the zirconium-based MOFs-modified functionalized nitrogen carbide heterogeneous composite photocatalyst prepared by this method exhibits good visible-light responsiveness and stability for organophosphorus pesticide degradation, achieving efficient adsorption and rapid mass transfer of organophosphorus pesticides; this degradation technology possesses high adsorption capacity, multiple catalytic activities, and strong practicality, greatly facilitating the visible-light degradation of trace organophosphorus pesticides, improving the efficiency of heterogeneous composite photocatalysts, and broadening the application range of functionalized nitrogen carbide materials and zirconium-based MOFs.

The process described in this application uses ethyl N-Cbz-4-oxo-3-pyrrolidinecarboxylate and Wittig reagent ethyltriphenylphosphine iodide as the starting points for synthesis. First, ethyl N-Cbz-4-oxo-3-pyrrolidinecarboxylate undergoes a nucleophilic addition reaction with Wittig reagent ethyltriphenylphosphine iodide to generate an olefin. Then, it undergoes a hydrolysis reaction under alkaline conditions to generate an acid, followed by a double bond reduction reaction under catalytic hydrogen conditions. The process is reasonable, has high yield, is simple to operate, and has low production cost, which is conducive to large-scale industrial production and fills a technological gap in related fields.

The application discloses a CO2-ion water flooding molecular dynamics simulation method and belongs to the technical field of CO2 oil displacement. The method comprises the following steps: establishing oil molecule models, water molecule models, CO2 molecule models, CaCl2 molecule models and graphene plate models corresponding to the characteristics of a target oil reservoir; optimizing the geometric structures of the models; assembling the optimized molecular models into a CO2-CaCl2-H2O ternary displacement system and performing molecular dynamics simulation; selecting an NVT ensemble during simulation, applying a periodic boundary condition, adopting a COMPASS II force field and configuring atomic potential parameters, running energy minimization and temperature initialization, and then performing displacement process simulation; quantitatively evaluating the oil displacement effect of the displacement medium of the CO2-CaCl2-H2O ternary system based on a trajectory file output by simulation; and the application can better explain the behavior of molecules under the synergistic action of multiple displacement media, reflect the oil displacement microscopic mechanism under the synergistic action of multiple displacement media, and has important significance for optimizing the development effect of tight oil reservoirs and improving the recovery rate.

This invention discloses an automatic control method for the sickle bend of a medium-thick plate rolling mill, belonging to the field of metal processing. The method includes billet heating and rolling, optimizing the steel rolling production scheduling principles and the roll crown configuration, dividing the work roll cycle into initial roll, intermediate roll, and final roll, and establishing scheduling principles for steel plate width and thickness. This invention significantly improves equipment stability and reduces the stock shortage rate.

The application relates to a continuous solvent-free reaction synthesis method of cycloxazidone, and belongs to the technical field of organic synthesis. The method comprises the following steps: taking ethyl chloroformate and monocyane as raw materials to generate N-cyano ethyl carbamate; dimethyl sulfate is added to generate N-cyano-N-methyl ethyl carbamate; dimethylamine hydrochloride aqueous solution is added to generate ethyl N-methyl-N-(N', N'-dimethylformamidino) carbamate; cyclohexyl isocyanate is added to generate ethyl N-methyl-N-[(cyclohexyl carbamoyl) (dimethylamino) methylene] carbamate; and the ethyl N-methyl-N-[(cyclohexyl carbamoyl) (dimethylamino) methylene] carbamate is subjected to a cyclization reaction to generate cycloxazidone. The method avoids the large use of toxic and harmful solvents such as chloroform, and the wastewater after the reaction basically does not contain dimethylamine, and the COD and total nitrogen content are greatly reduced.

The swimming goggles injection mold comprises a bottom plate, a movable mold body and a fixed mold body, the movable mold body is slidably connected to the upper surface of the bottom plate, a plurality of positioning rods are connected to the upper surface of the bottom plate, a demolding plate is slidably connected between the lower ends of the positioning rods, and the demolding plate is slidably connected with the movable mold body; the top end of the positioning rod is in contact with the fixed mold; a cavity for forming the swimming goggles is also formed between the movable mold and the fixed mold; an injection molding mechanism communicated with the cavity is also arranged between the movable mold and the fixed mold; according to the injection mold for the swimming goggles, due to the synergistic effect of the external expansion assemblies, the ejector rods and the ejector pins, the demolding process is smooth when the swimming goggles are well formed, and the situation that the swimming goggles are damaged during demolding can be effectively avoided; the invention further discloses a using method of the swimming goggles injection mold, the method is easy to operate, the technology is reasonable, and the stability of the swimming goggles injection molding process and the consistency of the product quality can be ensured.

The application discloses a preparation method of a chlorella pyrenoidosa fermentation beverage and belongs to the technical field of microorganisms. The preparation method comprises the following steps: S1, uniformly mixing chlorella pyrenoidosa powder with pure water, rehydrating, and obtaining rehydrated algae liquid; S2, adding an enzyme into the rehydrated algae liquid; after enzymolysis, the enzyme is inactivated, the filtrate is filtered and collected, and an enzymolysis liquid is obtained; S3, inoculating the activated strain into the enzymolysis liquid, oscillating and culturing, filtering and collecting the filtrate, and obtaining the chlorella pyrenoidosa fermentation beverage. The method combining neutral protease enzymolysis and lactobacillus plantarum fermentation is adopted, the bitterness of the chlorella pyrenoidosa beverage can be effectively improved without adding a chemical masking agent, and meanwhile, the nutritional value and functional characteristics of the chlorella pyrenoidosa beverage are well reserved.