15results about How to "Low benefit" patented technology

The invention discloses a preparation method of monodisperse vaterite-shaped calcium carbonate with uniform particle size, which comprises the following steps: 1, mixing lime with an ethanol solution, carrying out digestion reaction, and standing and settling lime slurry after the digestion reaction is finished; 2, carbon dioxide gas is introduced into the lime slurry for a carbonization reaction, vaterite-shaped calcium carbonate is generated, and different composite crystal growth inhibitors are added during carbonization to regulate and control the crystal form of calcium carbonate; and 3, after the carbonization reaction is finished, carrying out suction filtration, drying and crushing to finally obtain the monodisperse vaterite-shaped calcium carbonate with uniform particle size. The raw materials are low in obtaining cost, the preparation process is simple and easy to adjust, the calcium carbonate particles are regular in morphology and uniform in particle size distribution and are monodisperse products, the method for preparing the calcium carbonate with the special morphology is widened, and the prepared vaterite-shaped calcium carbonate is expected to be applied to the special fields such as the food industry and the pharmaceutical industry.

The application discloses a method and system for comprehensively utilizing high-magnesium nickel sulfide ore by a low-temperature oxygen-rich method. The method comprises the following steps: obtaining pre-leaching residue by pre-leaching and magnesium removal with high-magnesium nickel sulfide ore as raw material; obtaining activated ore slurry by mechanically activating the pre-leaching residue; and obtaining a nickel-containing leaching solution by low-temperature oxygen-rich leaching of the activated ore slurry. The application has wide application range, is simple and reliable, easy to control, and low in investment cost, and can convert metals into corresponding products, so that high-magnesium nickel sulfide concentrate can be treated at low cost and high efficiency.

The invention discloses an aluminum ash resource comprehensive utilization system and method.The aluminum ash resource comprehensive utilization system comprises a raw material processing system, a raw powder calcination system and a tail gas treatment system, the raw material processing system comprises a feeding device, a magnetic separation unit, a ball mill, a rolling screen and a conveying device, and the raw powder calcination system comprises a double-kiln-body rotary kiln, an additive bin, a pelletizer and a heat exchange device; the double-kiln-body rotary kiln comprises a preheating section, a transition section and a calcining section. Through the raw material processing system, the raw powder calcining system and the clinker processing system, useful components in the aluminum ash are used for preparing the refining slag, the process is simple, generation of hazardous waste is reduced, and recycling, harmlessness and benefit of the aluminum ash are achieved; in addition, the device further comprises a tail gas treatment system and a dust removal device, so that dust and harmful gas generated in the production process are treated, and environmental pollution is reduced.

The utility model belongs to the technical field of agricultural frost prevention, and particularly relates to an intelligent spraying device for preventing fruit trees from freezing flowers, which comprises a deep-well pump, a booster pump, a pipeline, a spraying system, a meteorological data acquisition system, a control system and an erecting device. According to the system, stable heat energy of underground water is utilized, the underground water with the temperature ranging from 12 DEG C to 15 DEG C is pumped through a deep well pump, the temperature around fruit trees is directly increased through the stable heat energy of the underground water, natural heat energy of the underground water is directly utilized, energy consumption and operation cost are remarkably reduced, and a high-precision temperature sensor, a humidity sensor and an intelligent control system are integrated; the temperature and humidity of the orchard can be monitored in real time, and spraying time and water spraying amount can be automatically adjusted according to meteorological data. The automatic control mode not only improves timeliness and accuracy of anti-frost measures, but also reduces manual intervention, reduces labor intensity and management cost, and realizes accurate temperature control and uniform coverage of fruit tree crowns.

The utility model discloses a kind of device for reducing helium waste, belong to helium leakage test technical field, including cavity, pipeline system, recovery tank, recovery pump, compressed storage mechanism, first support and second support, second support is set to first support right side, cavity is installed in second support, pipeline system gas inlet end is connected cavity, recovery tank is installed on first support, it is provided with three gas inlets, one of which is connected with the gas outlet of one pipeline system, recovery pump is installed in first support, recovery pump gas inlet end is connected with the gas outlet of another pipeline system, pump gas outlet is connected with the second gas inlet of recovery tank through pipeline system, compressed storage mechanism is set in first support, compressed storage mechanism gas inlet end is connected with the gas outlet of recovery tank through pipeline system, compressed storage mechanism gas outlet is connected with cavity through pipeline system. The device can maintain the micro-positive pressure inside system, prevent air backflow, avoid helium concentration dilution, realize reducing helium consumption.

The present invention relates to a treatment system and method for reducing and solidifying the resource recycling of electrolytic aluminum slag leachate. The treatment system of the present invention mainly comprises: a pre-precipitation tank (1), a regulating tank (2), an aluminum hydroxide reaction precipitation tank (3), a primary defluorination coagulation precipitation tank (4), a precision filter 1 (5), an activated aluminum oxide precision defluorination device (6), a two-stage oxidation cyanide breaking reaction tank (7), an oxidation arsenic removal reaction tank (8), a precision filter 2 (9), an ultrafiltration membrane clarification device (10), a resin weight removal device (11), a membrane concentration system (12), a deammonification tower (13), and an evaporation concentration crystallization device (14). The treatment method of the present invention can effectively realize resource recycling, convert ammonia nitrogen into ammonia water resources, and prevent arsenide, fluoride and chloride salt from leaving the factory, thereby reducing the amount of solid waste generated, avoiding the problem of hazardous waste management and transportation, and having lower operating costs. The economic benefits and comprehensive operating costs of aluminum and ammonia nitrogen generated are much lower than those of traditional processes, truly "making pollution control effective and profitable".

The invention discloses an aldoxime dehydratase mutant and application of the aldoxime dehydratase mutant in catalytic synthesis of a dinitrile compound, which is characterized in that wild aldoxime dehydratase of SEQ ID NO: 2 is subjected to M29A and L318F double mutation and marked as TU-1. The mutant can efficiently catalyze oxidation of 5-hydroxymethylfurfural (HMF) to generate 2, 5-furandicarboxaldehyde (DFF), the DFF is further converted into 2, 5-furandicarboxaldehyde dioxime (DFFD) and a final target product 2, 5-dicyanofuran (DCF) under mild conditions, the reaction selectivity is high, and the yield is excellent. The invention provides a green and controllable technical scheme with remarkable industrial potential for preparing high value-added furan chemicals from renewable resources.

The present invention provides a seedling medium suitable for tomatoes and a preparation method thereof, wherein the raw materials include renewable resources such as tail vegetables, sawdust, tree branches and leaves, cow dung and oyster shells. The steps are as follows: pre-treat some waste raw materials and mix them in a certain number, inoculate a bacterial agent to obtain a fermentation material, adjust the carbon-nitrogen ratio and pH of the fermentation material to suitable values, and then put it into a temperature-controlled molecular membrane aerobic fermentation tank for fermentation, add an appropriate amount of oyster shell particles after the fermentation is completed, and finally inoculate Bacillus to obtain a matrix suitable for tomato seedlings. The preparation method is green, environmentally friendly, low-cost, and highly sustainable. The tail vegetables are used as the main source of organic matter in the seedling medium, and the low-cost and easily accessible oyster shell powder is used as a supplementary source of mineral elements. The oyster shell particles replace vermiculite and perlite to achieve the air permeability and water retention of the matrix, thereby improving the physical and chemical properties of the matrix as a whole, optimizing and improving the seedling effect of the matrix and the fruit quality obtained by planting the seedlings.

The utility model provides a charging barrel capable of preventing silicon material pollution and monocrystalline silicon production equipment, the charging barrel comprises a barrel cover, a barrel body and a sheath which are detachably connected, the barrel body is arranged in a through manner and comprises a first end and a second end which are oppositely arranged, one end connected with the barrel cover is defined as the first end, and the other end is defined as the second end; the sheath detachably sleeves the first end of the cylinder body and is used for abutting against the cylinder cover; and due to the arrangement of the sheath, collision friction is greatly reduced, and a quartz fragment generation source is fundamentally eliminated. The sheath can effectively absorb collision energy and block external pollutants, and the oxygen content index of the silicon material is remarkably reduced. As the sheath is detachably connected to the first end of the cylinder body, even if the sheath is damaged, the sheath can be conveniently replaced, the maintenance period is prolonged, and the maintenance cost is reduced.

The invention belongs to the technical field of reservoir scheduling, and particularly discloses a reinforcement learning-based water storage scheduling rule extraction method, which comprises the following steps of: (1) establishing an advanced water storage optimal scheduling model taking the maximum total generating capacity in a scheduling period and the minimum flood control risk rate as targets; (2) taking the storage flow of many years as input, interacting with a water storage scheduling environment, and training an intelligent agent based on a reinforcement learning algorithm to extract a water storage scheduling rule; and (3) performing simulation scheduling according to the obtained scheduling rule. According to the method, a set of scientific and feasible water storage optimization scheduling rules are extracted by constructing the water storage optimization scheduling model in advance and using the reinforcement learning algorithm for training, the overall benefits of the water storage period and the high-water-level operation period are comprehensively considered, and a reservoir manager is effectively helped to make scheduling decisions meeting the requirements of all parties under different water inflow conditions.

The invention discloses a method for improving the bud grafting survival rate of palmaria palmata, and belongs to the technical field of palmaria palmata grafting. The grafting method comprises the following steps: (1) stock selection: selecting palmaria palmata which is low in fruiting rate and oil content and is more than three years as a stock; (2) scion selection: selecting an annual branch of palmata pedunculata with excellent characters and stable yield of more than two years as a scion; (3) grafting: cutting bud pieces on the scions for later use; and cutting a cut with the same size as the bud slice on the stock to reach the phloem, taking out the cut, embedding the bud slice into the cut of the stock, and binding tightly. The method solves the problem of low survival rate of current palmaria palmata grafting propagation, and improves the economic benefits of economic forests.

The invention discloses a multi-terminal cooperation intelligent scheduling platform and method for flexible employment management, and particularly relates to the technical field of employment management, and the method comprises the following steps: presetting a scheduling rule algorithm, carrying out the work scheduling according to flexible employment demands, and generating a scheduling arrangement form of each time; in each scheduling period, the fairness and rationality of work arrangement are evaluated by extracting a feature set influencing scheduling, and an evaluation report is generated; and generating a feedback signal according to the evaluation report, and determining whether to optimize the scheduling rule algorithm. In the optimization process, an optimization scheme is designed through feedback signals, a scheduling algorithm is iteratively trained, so that the scheduling algorithm better adapts to the employment demand, it is ensured that work distribution is more fair and reasonable, and the optimized algorithm is applied to scheduling of the next period; according to the method, whether task allocation is fair and reasonable or not can be scientifically evaluated, targeted optimization training can be carried out on unreasonable parts in task allocation, and more scientific and efficient task allocation in a labor use environment is gradually realized.

The invention discloses an OXC omni-directional optical switching control method, which comprises the following steps of: 1, designing a multi-dimensional optical path switching module by using an MEMS (Micro Electro Mechanical System) to support dynamic switching of an optical signal from any input port to any output port; step 2, adopting an intelligent control algorithm based on a genetic algorithm, and dynamically adjusting optical path configuration according to a real-time flow condition and a network topology structure so as to optimize an optical signal transmission path; step 3, establishing a dynamic traffic hotspot model to identify a traffic dense area so as to locate network congestion and potential fault sources; and step 4, a DM-train dynamic monitoring and tracking algorithm is adopted, and low-cost monitoring and rapid fault positioning are realized through the virtual network topology. According to the invention, by introducing the MEMS-based multi-dimensional optical path switching technology, the genetic algorithm-based intelligent path algorithm and the DM-train dynamic monitoring and tracking algorithm, the flexibility, efficiency, response speed and overall performance of the OXC are significantly improved.

The invention discloses a valve group unit for a marine methanol boiler, and relates to the technical field of valve group units for marine methanol fuel boilers. The three-way valve is adopted to replace a traditional straight-through valve, the number of valves and connectors is reduced, the leakage risk is reduced, and the lightweight design of the valve bank is achieved. The control system is simplified, and the starting time of fuel supply is shortened. According to the flow regulating valve, the combined design that the regulating petals are inserted and the rotating disc is shielded is adopted, accurate control over flow is achieved through staggering and aligning of the movable circular holes and the static circular holes, and the opening degree of the valve can be flexibly adjusted within the range of 0-100%. According to the design of the valve group, the safety, the reliability and the operation efficiency of the system are improved, and the requirements of the marine methanol boiler for high efficiency, safety and accurate control are met.

The invention provides a carbon dioxide capture-desorption-conversion integrated device and method, and relates to the field of carbon dioxide desorption, the device comprises a base, a shell is arranged above the base, a transmission unit is arranged below the base, and an adsorption material is arranged in the shell; pipelines are arranged on the two sides of the shell; a fixing unit is arranged on the adsorption material, and the transmission unit is connected with the fixing unit. According to the carbon dioxide capture-desorption-conversion integrated device and method, an economical and feasible carbon neutralization solution is provided for small scenes such as families, the technical blank is made up, energy conservation and emission reduction are facilitated, efficiency and economical efficiency are improved, and important practical value is provided for achieving the global carbon neutralization target.