18results about How to "Stable production process" patented technology

The invention discloses a heterocyclic aramid segmented copolymer containing a PBO structure as well as a preparation method and application of the heterocyclic aramid segmented copolymer, the mechanical property of heterocyclic aramid fibers can be greatly improved, a polymer liquid spinning production process is stable, and the problems that PBO polymer liquid spinning production is difficult and large-scale continuous production cannot be realized are solved. The market application field is expanded while the performance of the heterocyclic aramid fiber is improved. The method has important significance on the development of the heterocyclic aramid fiber manufacturing industry and even the whole high-performance organic fiber manufacturing industry.

The invention provides a method for separating phenol substances from phenol-containing coal tar, which comprises the following steps: rectifying the phenol-containing coal tar to obtain various phenol oil mixtures containing different phenol distributions, and separating various phenol products from various dephenolized phenol oils in different distillation ranges by adopting a proper separation means to obtain the phenol substances. And high-quality phenol products with different high purities are obtained. The method disclosed by the invention can be used for separating and utilizing phenol products and oil products to the greatest extent, and has good industrial application value and economic value.

The invention relates to the technical field of preparation of aluminum alloy strip new energy battery water-cooling plates, in particular to a preparation process for preparing a 3003M aluminum alloy new energy battery water-cooling plate. Comprising the steps of smelting, turning down, cast rolling and cold rolling. The 3003 + Zn alloy strip is produced by using an electrolytic aluminum liquid direct continuous casting and rolling process technology through improving components, the high-performance and high-quality 3003M aluminum alloy new energy battery water-cooling plate is obtained, a stable production process is determined, and a guarantee is provided for controlling the accuracy of parameters in all links of production; according to the 3003M aluminum alloy new energy battery water-cooling plate prepared through the method, the tensile strength ranges from 165 Mpa to 185 Mpa, the yield strength ranges from 65 Mpa to 100 Mpa, the ductility ranges from 15% to 35%, the user requirements are met, and the problem that an aluminum alloy strip for a new energy automobile battery water-cooling plate is prepared through a continuous casting and rolling technology instead of an existing method is solved.

This invention relates to the field of pesticide technology, specifically to a fungicidal composition, its preparation method, and its uses. The invention provides a fungicidal composition comprising an active ingredient, a first functional component, a second functional component, and an adjuvant; the active ingredient comprises fluthiazopyrone and cyazofamid; the first functional component comprises at least one selected from silica, titanium dioxide, and zinc oxide; the second functional component comprises at least one selected from citric acid, acetic acid, benzoic acid, urea, and triethanolamine. By introducing specific first and second functional components, this invention synergistically works with the active ingredient, effectively overcoming the key defects of fluthiazopyrone's easy photodegradation and cyazofamid's easy hydrolysis, thus improving the stability of the compound formulation; while ensuring the excellent control efficacy and resistance management advantages of both against oomycete diseases such as grape downy mildew, it extends the duration of action and weather resistance of the agent, providing a more stable, efficient, and long-lasting solution for field application.

The present application relates to a crystal form of a compound of formula (I) and a preparation method and application thereof. Specifically, the present application provides a crystal form of a compound of formula (I), which has good stability, good drug efficacy, and good safety, and can be used for preparing a drug for treating or preventing feline transmissible enteric disease virus infection or coronavirus infection caused diseases.

The invention discloses a method for purifying a toxoplasma gondii recombinant antigen, which comprises the following steps: selecting a full-length sequence of a toxoplasma gondii surface antigen SRS3, connecting the full-length sequence with a carrier through enzyme digestion to form plasmids, performing mass expression in escherichia coli, sequentially performing ultrasonication and centrifugation to collect cell supernatant, and performing deep filtration; the specific affinity chromatography column is coupled with an IgG subtype antibody obtained by hybridizing splenocytes and myeloma cells of a BALB / c mouse infected with toxoplasma gondii through a hybridoma technology. And through affinity chromatography purification, the toxoplasma gondii antigen protein with relatively high purity is finally obtained. According to the method, the toxoplasma gondii recombinant antigen can be stably and effectively purified from the cell supernatant. The method provided by the invention has the advantages of high extraction purity, simple process, capability of realizing one-step purification, stable antibody and the like, and has important significance for realizing purification of the toxoplasma gondii recombinant antigen.

A method for producing low-alloy high-strength steel with a plate width of ≥1800mm: conventional hot rolling and hot rolling plate surface convexity; pickling; cold rolling using five stands, refining the group spacing according to the thickness of the finished product and controlling the cold rolling reduction rate; continuous annealing; flattening. The present invention not only has a strip width of ≥1800mm, but also has a stable production process, the qualified rate can be increased from the current 40% to more than 80%, the tensile strength is ≥360MPa, and the performance meets the needs of users.

A method for producing dual-phase steel with a plate width of ≥1800mm: conventional hot rolling and hot rolling plate surface convexity; pickling; cold rolling using five stands, refining the group spacing according to the thickness of the finished product and controlling the cold rolling reduction rate; continuous annealing; flattening. The present invention not only has a strip width of ≥1800mm, but also has a stable production process, the qualified rate can be increased from the current 40% to more than 75%, the tensile strength is ≥500MPa, and the performance meets the needs of users.

The invention discloses a selenium-enriched yeast production method which comprises the following steps: S1, preparing nutrient components of a culture medium: preparing a nutrient solution with the selenium concentration of 3000mu g / ml and the pH value of 4.8-6.8 from selenite, white sugar, purified water and amino acid according to a certain ratio; s2, preparing a saccharomycetes culture medium: adding 0.5-5% of dry saccharomycetes into the nutrient solution prepared in the step S1 at 28-30 DEG C, and activating to obtain the saccharomycetes culture medium; s3, preparing selenium-enriched saccharomycetes: performing dough kneading on flour and the saccharomycetes culture medium obtained in the step S2 according to a certain proportion, and performing fermentation to obtain the selenium-enriched saccharomycetes; and S4, fermenting: adding the selenium-enriched yeast obtained in the step S3 into a nutrient solution in sequence according to a certain proportion, stirring, adding flour, kneading dough, sealing and fermenting, and repeatedly kneading and sealing and fermenting the dough after sealing and fermenting for a plurality of times. The selenium-enriched yeast production method is simple, high in efficiency and environment-friendly.

The invention relates to the technical field of carbon dioxide capture, in particular to a carbon dioxide enrichment device under pure oxygen combustion. The device comprises a decomposing furnace and an air combustion mechanism, a gas injection port is formed in the bottom of the decomposing furnace; the air-fuel mechanism comprises an air-fuel shell and a pure oxygen air distributor, an air-fuel chamber is arranged in the air-fuel shell, and an outlet of the air-fuel chamber is communicated with the fuel gas injection port; the pure oxygen air distributor is arranged at the bottom of the air combustion chamber, an inlet of the pure oxygen air distributor is used for inputting oxygen, and the pure oxygen air distributor is provided with a plurality of outlets which are distributed at intervals in the circumferential direction and communicate with the air combustion chamber. The arrangement of the pure oxygen air distributor enables oxygen to enter the decomposing furnace in a dispersed mode, so that the oxygen can make full contact with pulverized coal and raw materials, and the combustion efficiency and the decomposing effect of the raw materials are improved. Oxygen sprayed out of the pure oxygen air distributor forms a spouting air cushion layer at the bottom of the air combustion chamber, high-temperature powder can be prevented from being deposited at the bottom of the air combustion chamber, meanwhile, airflow can penetrate through sintered particles, and it is guaranteed that the production process can be stably carried out.

The invention discloses a nitrogen removal agent for low-nitrogen metal manganese ingot production and a preparation method thereof, relates to the technical field of metal material processing, and aims to solve the problems that in the current low-nitrogen metal manganese ingot processing process, the nitrogen content in a metal manganese ingot is increased, and the nitrogen removal effect is poor due to the fact that the low-nitrogen metal manganese ingot and nitrogen in the environment are easily subjected to a combination reaction. The silicon nitride slag remover comprises a reducing agent and a slag remover, the reducing agent reacts with nitrogen in air to generate a new nitride when the liquid manganese water is heated to 1300 DEG C or above, and the slag remover can adsorb silicon nitride on the surface of the manganese water and form a protective film on the surface of the manganese water. According to the nitrogen removal agent and the production process thereof, the nitrogen content in the metal manganese ingot can be remarkably reduced, a dual-action mechanism is adopted, it is ensured that the nitrogen content of the metal manganese ingot is effectively controlled in the whole production process, and therefore the quality of the metal manganese ingot is improved; therefore, the requirements on low-nitrogen metal manganese ingots in the industries of steel, nonferrous metals and the like can be better met.

The invention discloses a method for purifying rocuronium bromide. The method comprises the following steps: reacting a rocuronium bromide crude product with alkali metal bromine in dichloromethane, filtering, mixing the filtrate with methyl tert-butyl ether, and separating out a solid. The method can effectively control the chloride ion residues in rocuronium bromide, and has a good application prospect in industrial production of rocuronium bromide.

A temperature control system and method for a continuous graphitization furnace, comprising a first temperature sensor (9) for detecting the inlet water temperature of cooling water; a second temperature sensor (8) for detecting the outlet water temperature of cooling water; a cooling water flow meter (7); a first weighing mechanism (3) for measuring the feed amount of the continuous graphitization furnace; a second weighing mechanism (5) for measuring the discharge amount of the continuous graphitization furnace; a third temperature sensor (2) for measuring the temperature of the feed material; a fourth temperature sensor (4) for measuring the temperature of the discharge material; an intermediate frequency power supply controller (10); an infrared temperature measuring instrument (6) for measuring the temperature in the furnace; a PLC (11) for collecting real-time data of each temperature sensor, flow meter, first weighing mechanism, second weighing mechanism and infrared temperature measuring instrument, and controlling the output load power of the intermediate frequency power supply controller (10); the PLC (11) calculates and controls the output load power of the intermediate frequency power supply controller (10) according to the collected data.

This invention discloses a time-release, slow-release, blood sugar-controlled compound cereal nutritional powder, its preparation method, and its applications, belonging to the field of functional cereal food technology. It comprises: 10-15 parts of fast-phase particles, 35-45 parts of slow-phase gradient-degrading gel microspheres, and 30-40 parts of complementary-phase particles; each is an independent particle form, and after oral administration, they act sequentially during gastrointestinal digestion: the fast-phase particles first contact the digestive juices, releasing a small amount of rapidly energy-providing dextrin within 5-10 minutes and stimulating the satiety center; the slow-phase gradient-degrading gel microspheres then gradually degrade, continuously releasing carbohydrates 1-3 hours after a meal; the complementary-phase particles begin to degrade 3 hours after a meal, supplementing energy supply in the late postprandial period; thus, they synergistically achieve stable blood sugar control throughout the postprandial period. This invention can match the insulin secretion window to control blood sugar, precisely delaying energy release to avoid late postprandial hypoglycemia, and achieving stable blood sugar control throughout the postprandial period.

The utility model provides an assembling jig for a vacuum pump, which belongs to the technical field of jigs and comprises a vertical connecting rod, a fixing plate horizontally sleeved at the upper end of the connecting rod, fixing holes formed in corners of the fixing plate, a longitudinal bottom plate horizontally arranged at the lower end of the connecting rod, barrier strips arranged on the front side and the rear side of the connecting rod, one ends of the two barrier strips are respectively connected with the bottom plate, and the other ends of the barrier strips are respectively connected with the connecting rod. The assembling jig for the vacuum pump solves the problems that an existing jig is generally complex in structure, high in maintenance cost, inflexible in operation, low in efficiency, inconvenient to assemble and inconvenient to carry, and the assembling jig for the vacuum pump has the advantages of being simple in structure, convenient to operate, high in practicability and the like. And meanwhile, the problem that precise devices in the pump body are easy to damage or deform in the process of assembling the vacuum pump is solved.

The utility model relates to smelting furnace technical field discloses a kind of temperature measuring fixed anti-deviation devices of smelting furnace;Including furnace body and support frame, the support frame is fixed in the one side of the furnace body by bolt, the inner wall of the support frame is fixed with heat shield, and the one side of the support frame is provided with mounting assembly;Driving assembly is set to the one side of the support frame, the utility model can be convenient to clamp and fix thermocouple when temperature measurement, temperature measurement is conducive to operator to control smelting furnace temperature, can let the temperature in furnace keep in proper range, prevent because temperature inaccuracy leads to smelting furnace overburning or temperature is too low, and then stabilize production process, reduce defective and waste production, by setting first gasket, second gasket and third gasket can be convenient to reduce the vibration generated by furnace body, improve the stability of clamping work.

The utility model discloses a high-speed wire rod mill pre-finish rolling inlet sliding guide and guard set which comprises an inlet sliding guide and guard set body, an inner cavity is formed in the inlet sliding guide and guard set body, connecting pieces are welded to the front side and the rear side of the upper end of the inlet sliding guide and guard set body, and bolts are installed on the connecting pieces. The left side of the bottom end of the inlet sliding guide set body is fixed to a rolling mill through fixing bolts, and the front set and the rear set of fixing bolts are arranged. The front side and the rear side of the upper end of the inlet sliding guide set body are fixed through the bolts, and then the fixing bolts at the bottom end of the left side of the inlet sliding guide set body are matched for fixing, so that the left inlet sliding semi-guide, the right inlet sliding semi-guide and the guide base form a firm fastening relation, and the stability of the production process is guaranteed; the limiting device is mounted between the lower end of the inlet sliding guide group body and the guide base, so that the inlet sliding guide group body can be mounted more firmly, and the stability is higher.

This invention discloses a process and method for preparing battery-grade manganese tetroxide using a manganese sulfate solution, belonging to the field of new energy battery materials and hydrometallurgical technology. The process uses a manganese sulfate solution as the manganese source and achieves one-step preparation of battery-grade manganese tetroxide through raw material preparation and process steps. The raw materials include a manganese sulfate solution (manganese concentration 40-130 g / L, low impurity content), a precipitant (10-35 wt% sodium hydroxide or 5-20 wt% ammonia), an oxidant (3-15 wt% hydrogen peroxide, air, or oxygen), a modifier (0-10 g / L, such as sodium tartrate, EDTA, etc.), and ammonium salts (0-30 g / L, such as ammonium sulfate, ammonium chloride, etc.). The process steps include: heating the reaction solution to 40-90℃, adjusting the pH to 7-10, continuously adding manganese sulfate solution, precipitant, and oxidant, controlling the pH change within ±0.3, reacting for 10-100 hours, stopping the manganese solution feed, maintaining the pH for 0.5 hours, and aging for 0.5-6 hours. After filtration, washing (conductivity ≤100μS / cm), and drying, the product is obtained. Wastewater is treated with a manganese precipitant (such as sodium carbonate) to recover manganese carbonate, and the solution is concentrated and crystallized to obtain sulfate byproducts. This invention features a short process flow, low cost, high product purity (manganese content ≥70%), controllable particle size, and high resource utilization, making it suitable for the production of cathode materials such as lithium manganese oxide and lithium manganese iron phosphate.