27results about How to "Method security" patented technology

The present invention provides a waste lithium battery discharge device and a discharge method based on fluidized particles. The discharge device is configured to discharge the waste lithium batteries (10) by making conductive particles (9) and waste lithium batteries (10) contact and collide with each other, and comprises: a fluidized bed discharge chamber (1); an air distribution plate (2); a waste lithium battery inlet (6) for supplying waste lithium batteries (10); a conductive particle inlet (7) for supplying conductive particles (9); conductive particles (9) enter the fluidized bed discharge chamber (1) through the conductive particle inlet (7) and are distributed in the fluidized bed discharge chamber (1); and a discharge port (8) for discharging conductive particles (9) and waste lithium batteries (10) from the fluidized bed discharge chamber (1). The waste lithium battery discharge device and the discharge method of the present invention can discharge waste lithium batteries in batches, solve the problem of battery heating during the discharge process, and reduce environmental pollution.

The invention belongs to the technical field of starch modification, and discloses a method for preparing starch citrate through solvent-free continuous stirring, which comprises the following steps: step a, a drying stage: firstly, crushing citric acid particles, sieving for the first time, uniformly mixing the citric acid powder sieved for the first time with starch, drying at high temperature, and cooling to room temperature, after crushing, sieving for the second time to obtain a citric acid-starch mixture; and b, a continuous stirring reaction stage: stirring the citric acid-starch mixture at high temperature while reacting to obtain starch citrate, cooling, washing with ethanol, drying, crushing, and sieving for the third time to obtain the starch citrate. The method does not use any solvent and catalyst, does not generate waste water and waste gas, is green and environment-friendly, and is short in preparation time and high in efficiency; by means of high-temperature drying pretreatment, the caking problem caused when stirring and reacting are conducted in the follow-up process is greatly solved, stirring and reacting are conducted in the follow-up process, the contact opportunity of starch and citric acid is increased, and the content yield of resistant starch is increased.

The present invention relates to the technical field of organic electrochemical synthesis, and in particular to a method for preparing propargyl alcohol by electrolyzing glycerol. The specific method comprises the following steps: adding glycerol and an aqueous chloride solution of an alkali metal or an alkaline earth metal into an electrolytic cell, electrolyzing under the action of a direct current to obtain an electrolyte containing propargyl alcohol, chlorine and hydrogen, and separating the electrolyte by a membrane to obtain propargyl alcohol. The method of the present invention produces propargyl alcohol by dehydrating glycerol in an electrolytic cell, and other substances involved in the reaction are recycled, and the entire reaction process is green and environmentally friendly. The method is simple and safe, and the propargyl alcohol is easily separated and has a high yield.

The application discloses an emergency scheduling optimization method and system for coal chemical production, and the emergency scheduling optimization method comprises the following steps: setting input data and output parameters; based on the input data and the output parameters, a general emergency scheduling optimization model is established with the target of maximizing benefits; on the basis of the general emergency scheduling optimization model, the required constraint conditions are selected according to the actual requirements of users, and a personalized visual emergency scheduling optimization model is generated based on a coal chemical process production flow; for the personalized visual emergency scheduling optimization model, a scheduling case library and an emergency plan library are constructed; when an abnormal working condition is monitored, an alarm is given and the abnormal working condition is matched with the abnormal working condition in the scheduling case library; according to the matching condition of the monitored abnormal working condition and the abnormal working condition in the scheduling case library, an emergency scheduling optimization scheme in the emergency plan library is called or emergency optimization calculation is carried out. The application can improve the processing capacity of abnormal events, and ensure smooth and safe production of enterprises when an emergency working condition occurs.

The invention discloses a method for inhibiting algae through palmatine hydrochloride, and belongs to the technical field of ecological environment protection. The problem that existing algae inhibition cannot meet the requirements of safety, environmental protection and convenience is solved. The method comprises the following steps: 1, preparing a palmatine hydrochloride solution, and adding the palmatine hydrochloride solution into water containing algae; and 2, light treatment. The method is used for inhibiting algae through palmatine hydrochloride.

The present invention provides an endoglucanase editing gene and an application of its encoding enzyme, belonging to the field of gene technology. In order to solve the problems of low expression and poor thermal stability of endoglucanase in the prior art. The present invention provides an endoglucanase, the amino acid sequence of the endoglucanase is shown in SEQ ID NO.2. A new production method of endoglucanase is provided to improve the activity of endoglucanase.

The present invention provides a method for producing radiolabeled tyrosine derivatives with good purity and stability, by a safe method suitable for industrial production of pharmaceuticals. The present invention relates to a method for producing Compound (5) and Radiolabeled Compound (6). wherein each symbol is as defined in the description.

The present invention belongs to the field of catalytic science and technology, and relates to a method for preparing isocyanate catalyzed by a photoinitiator. The present invention comprises the following steps: mixing an organic amine compound with chloroform, adding a photoinitiator 2959, placing the mixture under ultraviolet light for irradiation reaction, and removing the solvent and by-products by distillation or filtration to obtain an isocyanate. The method for preparing isocyanate provided by the present invention realizes the oxidation of an organic amine by a chloroform compound under mild conditions with the participation of a photoinitiator 2959, thereby generating an isocyanate. Compared with the traditional phosgene method, the method is safer and more environmentally friendly, and the reaction conditions are simple and easy to control, and the method has good industrial application potential.

The invention discloses a model training method and a task execution time prediction method and device, and the method specifically comprises the steps: screening similar historical model training tasks according to historical resource occupation data of historical model training tasks; and inputting the historical resource occupation data of the historical model training task and the similar historical model training task into a prediction model, so that resource occupation feature data corresponding to the historical model training task is determined, and the prediction execution duration corresponding to the historical model training task is determined. And training according to the predicted execution duration and the historical task execution duration. And the trained prediction model determines the prediction execution duration of the target model training task according to the resource occupation data of the target model training task. The method in the specification is higher in prediction efficiency and more accurate. Therefore, the utilization rate of training resources is effectively improved during subsequent resource allocation, and the training efficiency of the whole training process is improved to a great extent while resource waste and shelving are avoided.

The application discloses a kind of continuous flow photocatalytic decarboxylation preparation biological hydrocarbon method, belong to the technical field of biofuel preparation.The method includes the following steps: high fatty acid compound, hydrogen atom transfer catalyst and acridine photocatalyst are dissolved in organic solvent, and mixed solution is obtained;The mixed solution is passed into circulating continuous flow light reactor, and photocatalytic decarboxylation reaction is carried out at room temperature for 12-24 hours, and reaction liquid is obtained;Reaction liquid is separated by reduced pressure distillation, and the biological hydrocarbon compound after decarboxylation is obtained.The application uses continuous flow light reactor to strengthen mass transfer and heat transfer efficiency, solves the problem that light penetration depth is limited in traditional batch photoreactor, and reaction is not uniform;Metal-free catalytic system is used, and the use of noble metal and potential residual risk is avoided.The method has mild reaction condition, higher product yield, good atom economy, and for unsaturated high fatty acid, olefin configuration can be maintained before and after decarboxylation, and has good industrial application prospect.

The invention provides a self-assembly label-free enzyme-free electrochemical HPV16E7 detection platform as well as a preparation method and application thereof, and belongs to the technical field of biological analysis. According to the invention, a magnetic alpha-Fe2O3 / Fe3O4 (at) Au / Sub / BSA signal transmission medium, a CRISPR / Cas14a system and a double-foot DNA walker are organically combined to prepare a self-assembly label-free enzyme-free electrochemical HPV16E7 detection platform, and a more reliable and accurate means is provided for HPV16E7 detection; the linear detection range of the electrochemical HPV16E7 detection platform is 100 fg.mL <-1 >-10 [mu] g.mL <-1 >, the detection limit is 67.17 fg.mL <-1 >, and the quantification limit is 0.22 pg.mL <-1 >; the electrochemical HPV16E7 detection platform has the advantages of no need of enzyme, no need of marking, no need of pretreatment, fast and convenient detection process, low cost and good practicability.

The invention discloses a method for photoinduced demethylation of anisole, which belongs to the field of pharmaceutical compound synthesis. The method provided by the invention uses ferric chloride as a catalyst for the main reaction, reacts under the condition of air or oxygen, and obtains a demethylated product under illumination. The catalytic efficiency of the catalyst is high, and the yield of the product obtained by dealkylation is also high, which greatly reduces the experimental cost and is suitable for the synthesis and amplification of later compounds. The method provided by the invention does not have expensive metal catalysts and oxidants, has the characteristics of high efficiency, green environmental protection, safety, saving experimental costs, and simple operation and post-processing.

The present application relates to a kind of preparation method of immunoglobulin powder and its application, the preparation method includes the following steps: collecting bovine colostrum, using cell survival technology is frozen;Frozen bovine colostrum is thawed, carries out milk fat separation, and obtains defatted bovine colostrum;Defatted bovine colostrum and composite rennet are mixed and are curdled, and then broken, obtain whey;The composite rennet includes aspartic protease, papain and bromelain;Whey is ultrafiltrated, and immunoglobulin solution is obtained;Immunoglobulin solution is vacuum freeze-dried, and the immunoglobulin powder is obtained.The preparation method provided by the present application is low temperature all the way, the activity of immunoglobulin is retained to the greatest extent, the use of composite rennet solves the problem of curd failure, and each link cooperates to improve the curd effect, realizes the preparation of high-efficiency, high-purity and high-quality immunoglobulin powder.

The invention discloses a method for improving seed germination under a salt stress condition and application thereof, and belongs to the technical field of crop production. According to the method provided by the invention, the germination ability of the seeds under the salt stress condition can be remarkably improved, the germination rate, germination potential and germination index of the watermelon seeds and the muskmelon seeds under the salt stress condition simulated by 250mM NaCl can be remarkably improved by soaking the seeds with 10 mu M methyl caffeate, and the germination of the watermelon seeds and the muskmelon seeds under the normal condition is not influenced; seedlings generated by the seeds treated by the method provided by the invention grow robustly, and compared with seedlings grown under normal conditions, obvious abnormity is not observed, so that the method provided by the invention is safe and has no toxic effect on plant growth; the provided method is simple, effective and low in cost, and can be used for improving the seed germination capacity under the salt stress condition so as to improve the utilization capacity of the saline-alkali soil and improve the crop yield and quality contribution of the saline-alkali soil.

The application discloses a kind of pre-transition metal oxide nanoparticles and its preparation method and oxygen reduction synthesis hydrogen peroxide application.The active component of the material is pre-transition metal oxide nanoparticles.Preparation method includes: with soluble pre-transition metal salt and ammonium chloride as raw material, dissolving, evaporating to dryness to obtain mixed precursor, then by calcining at different temperatures in tube furnace to obtain pre-transition metal oxide nanoparticles.The pre-transition metal oxide nanoparticles catalyst prepared can be used for oxygen reduction to prepare hydrogen peroxide, with very high hydrogen peroxide selectivity and excellent stability, greatly improving the energy utilization efficiency.The application has the characteristics of low cost, low energy consumption, simple operation, no security risks, etc., and is suitable for large-scale industrial production.

The invention discloses a methylation synthesis method of a ceftaroline fosamil intermediate, characterized in that: 7-phenylacetylamino-3-[4-(1-methyl-4-pyridine)-2-thiazolethioyl]-3-cephem-4-carboxylic acid diphenylmethyl ester is reacted with an iodine alkali salt and an acid to obtain a ceftaroline fosamil intermediate. In the reaction process of the invention, the methylation ability is strong, the reaction toxicity is low, and the reaction does not use the toxic reagent iodomethane, thereby solving the potential safety hazard problem in the prior art.

The present invention provides a method for producing radiolabeled tyrosine derivatives with good purity and stability, by a safe method suitable for industrial production of pharmaceuticals. The present invention relates to a method for producing Compound (5) and Radiolabeled Compound (6). wherein each symbol is as defined in the description.

The invention discloses a supported ozone catalyst, a preparation method thereof, a spherical ozone catalyst and application thereof, and belongs to the technical field of water treatment and environmental catalysis. The supported ozone catalyst comprises an active component, an auxiliary carbon component and a carrier, the carrier is modified gamma-Al2O3 (aluminum oxide) or modified SiO2 (silicon dioxide); the active component and the additive carbon component are dispersed on the outer surface of the carrier and the inner surface of a pore channel; the active component is an iron-cobalt composite oxide and has a spinel crystal form; the additive carbon component is prepared by calcining urea and citric acid in an inert atmosphere. The active components in the supported ozone catalyst are highly dispersed, the activation efficiency of ozone can be remarkably improved by the supported ozone catalyst under the assistance of the carbon component, and high-efficiency removal of refractory organic pollutants in wastewater is realized.

The present application proposes a method for pressure relief and permeability enhancement using a pneumatic flexible tool, the method comprising the following steps: step 1, connecting an air compressor, a high-pressure air pipe, a drilling rig, a drill rod, a pneumatic flexible tool and a slitting device in sequence; step 2, adjusting the position of the drill rod and moving the slitting device to a target position in a coal hole; step 3, turning on the air compressor and delivering high-pressure gas to the pneumatic flexible tool through the high-pressure air pipe and the drill rod; step 4, the pneumatic flexible tool drives the slitting device to rotate to complete the slitting and permeability enhancement of the coal hole. The method has the advantages of safety, high efficiency and low cost.

According to the europium-doped sodium lithium phosphate photoluminescence material and the preparation method thereof, the preparation raw materials and the preparation method are simple, safe and low in cost, a powder sample shows good characteristics of the photoluminescence material, a photoluminescence signal has high sensitivity and stability, and the photoluminescence signal has high sensitivity and stability by adopting the heating temperature of 650-700 DEG C and the heating time of 8-10 h. Higher photoluminescence sensitivity can be obtained; the total photoluminescence response of the synthesized europium-doped sodium lithium phosphate photoluminescence material fluctuates less than 3% within 24 h after irradiation, and the lowest detection limit is 0.68 [mu] Gy, which reaches the international advanced level. According to the invention, the problems of low sensitivity and poor stability of most photoluminescence materials at present can be solved, and a solid guarantee is provided for the accuracy of the material applied to nuclear radiation dose monitoring and traceability.

This invention provides a method for preparing an amorphous porphyrin supramolecular photocatalyst. The method involves synthesizing amorphous porphyrin supramolecular molecules at room temperature using porphyrin monomers as raw materials, and then using these amorphous porphyrin supramolecular molecules as a photocatalyst to prepare hydrogen peroxide. This invention utilizes amorphous porphyrin supramolecular molecules as a photocatalyst, which is convenient and rapid to synthesize. In the hydrogen peroxide preparation process, O2 is used as the oxygen source and visible light as the energy source, resulting in low energy consumption and high safety. The method is green and pollution-free, with mild reaction conditions, and a high yield of hydrogen peroxide per unit time. The yield of hydrogen peroxide prepared by amorphous porphyrin supramolecular molecules as a photocatalyst is approximately twice that of crystalline porphyrin supramolecular molecules. Among these, amorphous TCPP supramolecular molecules exhibit the highest yield of hydrogen peroxide, reaching up to 300 mM / g.

The invention discloses a method for photoinduced N-alkylation, and belongs to the field of pharmaceutical compound synthesis. The method provided by the invention uses ferric chloride as a catalyst for a main reaction, performs a reaction under the condition of air or nitrogen, and obtains a dealkylation product under light irradiation at room temperature. The catalyst has high catalytic efficiency, and the yield of the product obtained by dealkylation is also high, which greatly reduces the experimental cost and is suitable for the synthesis and amplification of later compounds. The method provided by the invention has no expensive metal catalyst and oxidant, has the characteristics of high efficiency, green environmental protection, safety, saving experimental cost, and simple operation and post-processing.

The application is a kind of exhibition hall ground ditch inside electromechanical comprehensive pipeline assembly type construction method, which comprises the following steps: electromechanical comprehensive pipeline module division, main pipe ditch support design, branch pipe ditch support design, factory prefabrication, factory or ditch edge assembly, segmented hoisting and segmented installation, positioning adjustment support fixing, alignment connection between alignment sections, fire hydrant box and comprehensive box installation. The method is beneficial to the rapid and reasonable construction of the exhibition hall ground ditch inside electromechanical comprehensive pipeline, the designed pipe ditch support realizes the purpose of factory prefabrication and on-site assembly type construction, and solves the technical problem that the construction of the electromechanical comprehensive pipeline in the exhibition hall ground ditch is relatively difficult due to the narrow space. In addition, the fire hydrant box in the method is newly designed in the principle of convenient use, and can be directly pulled up when needed, which is simple to operate and convenient to use. Practice proves that the method is safe and reliable, convenient to construct, and good in appearance, and achieves the expected index and target.

The utility model relates to the technical field of thermal shrinkage automatic film wrapping machines, in particular to a film drawing mechanism of a thermal shrinkage automatic film wrapping machine, which comprises a workbench, a driving component, a first positioning plate, a second positioning plate and a third positioning plate, and a mounting seat and a first limit rod are rotatably connected between the first positioning plate and the third positioning plate. A second limiting rod is rotatably connected between the first positioning plate and the second positioning plate, the inner side of the second positioning plate is slidably connected with a first membrane separating shell, and a membrane pressing block is arranged on the inner side of the first membrane separating shell. Through the arrangement of the mounting base, the first limiting rod, the second limiting rod, the first separating film, the film pressing block, the second separating film shell, the rail shaft, the sliding piece, the hydraulic rod and the adhesive tape cutter, the device can conveniently replace a heat shrinkage film in a bonding mode; in the replacement process, workers do not need to manually drive the heat shrinkage film to penetrate through a plurality of limiting rods of the film drawing mechanism, and the method saves time and labor and is safer.

The present invention belongs to the field of medicinal material identification, and specifically relates to a primer probe set and a real-time fluorescence PCR identification method for identifying striped scorpion. The present invention takes striped scorpion as the research object, and based on the mitochondrial gene sequence of East Asian scorpion, striped scorpion and other common confused products, spiked messenger scorpion, the specific primers and probes of striped scorpion are studied and found, and the primers, probes and fluorescence PCR method are applied to striped scorpion medicinal materials, powder and Chinese patent medicine containing the medicinal materials, to identify the striped scorpion medicinal materials from the DNA level. The method is fast, accurate, effective and safe, and can realize the qualitative detection of striped scorpion medicinal materials.

The invention provides a blasting tube for foundation reinforcement and a method for reinforcing a foundation through carbon dioxide blasting, the blasting tube comprises a tube body with two closed ends, a liquid storage tank is arranged in the tube body, and an air leakage head is arranged at one end of the tube body. The air leakage plate is provided with a plurality of air leakage holes communicated with the interior of the air leakage head. The method has the beneficial effects of being high in safety, environmentally friendly, low in cost, high in efficiency and good in soil body reinforcing effect.

The present invention provides a method for removing thiophene sulfur from styrene by catalytic alkylation. The method uses concentrated phosphoric acid or dilute sulfuric acid as a catalyst, and catalyzes styrene itself to undergo an alkylation reaction with thiophene-type sulfur-containing compounds in a kettle reactor under a reaction condition of 50 to 70°C to generate high-boiling-point components such as benzylthiophene. These high-boiling-point components are separated from styrene by subsequent distillation, thereby achieving the purpose of desulfurization. Compared with solid acid, liquid acid is easy to separate from the reaction product of the oil phase, and the acidity is milder. The reaction can be carried out under conditions higher than the ambient temperature and is easy to control. In addition, liquid acid has fewer single side reactions of the acid center type, so even at a high temperature (greater than 45°C), the oligomerization of styrene is not serious.