208 results about "Total investment" patented technology

The invention discloses a coal dressing method and system of four-product jigging primary cleaning and secondary head coal small simplified heavy medium reelecting. The invention is a coal dressing method and system that selects the secondary head coal product through the four-product jigging technique and then reelects the secondary head coal with small simplify heavy medium separation technology. The adoption of the invention to select coal is characterized by less total investment, simpler system and lower operational expense, which can improve the stability of the system, reduce the powerconsumption, simplify the managing and maintaining work. The method can be easily realized with present technical merits, which is beneficial to be popularized in the middle and small coal washeries where the management level is low and if the method is used in oversize coal washeries, the cost for washing is lower.

The invention relates to the field of engineering manufacture, in particular to an optimal design method for production line layout. The technical problem that the influence of production fluctuation on production efficiency cannot be reduced by the conventional method so as to reduce enterprise benefits is solved. According to the scheme, the optimal design method for new production line layout mainly comprises the following steps of: acquiring the labor house data of original sub-procedures; generating functional segments and a station number by adopting a line balancing planning method, so that the cycle time of a single line in each functional segment is shortest; when total investment C is determined, finding all N and S combinations consistent with a constraint condition by using an enumeration method; calculating the cycle time of each functional segment; calculating the overall cycle time of each [N, S] scheme; and performing calculation according to the steps, and when the total investment C is determined, determining a scheme with the shortest cycle time in all the [N, S] schemes as a target scheme. The method can be used for the design of the new production line layout and the modification of the conventional production line layout.

The invention relates to a device and a method for coupling and decarbolizing of catalytic cracking gasoline and kerosene, wherein a feed inlet of a preprocessor of the catalytic cracking gasoline is connected with a head tank of the catalytic cracking gasoline through a gasoline feeding pump; a discharge hole is connected with an inlet of a thiophene sulfide alkylation reactor through a pipeline; the outlet of an alkylation reactor is connected with the middle part of a sulfur transferring fractionating tower through the pipeline; a catalytic cracking kerosene input port is arranged at a stripping section of the fractionating tower and is connected with a catalytic cracking kerosene storage tank by the feeding pump; a desulfurated gasoline outlet is arranged on the top of the fractionating tower; a sulf-kerosene outlet is arranged at the bottom of the fractionating tower and is connected to a kerosene hydrodesulfurizing device through the pipeline; a product outlet arranged at the upper end of a kerosene hydrogenation plant is connected with a gas-liquid separator through the pipeline; a desulfurated kerosene outlet is arranged at the lower end of the gas-liquid separator. The invention has the advantages that through a corporate distillation of gasoline and kerosene, sulfur in the gasoline is transferred into the kerosene, and sulfur in gasoline fraction is desorbed without losing octane value, thus omitting the process of gasoline hydrodesulfurizing and lowering total investment and operation expenses.

The invention discloses a method of intertidal zone wind power for accessing a power grid. The method comprises the following steps: step 1, determining an influence factor set; step 2, evaluating the power grid state; step 3, dividing the planning area into supply districts which are of different layers, connected but independent; step 4, carrying out load prediction, and performing load characteristic analysis and prediction with some emphasis; step 5, formulating a transformer substation layout and a wire frame scheme; step 6, analyzing wind power consumption capacity in the planning area and each supply district; step 7, determining wind power integration mode of the intertidal zone wind power access applicable for each power supply district; step 8, carrying out scheme optimization; step 9, providing the final suggestion. By virtue of the method, in the power grid planning phase, the wind power resource characteristics and the power grid operation requirements can be both considered about to realize that the total investment cost for power grid construction is optimized.

The invention discloses an optimization programming and evaluation method of a micro-grid power supply. Under grid connection and island operation modes, a mathematical model of distributed power supply optimization programming in a microgrid is established respectively. Constraint conditions of diesel generator starting and operation are considered so that optimization configuration of scientific wind power, photovoltaic and fuel cells, a diesel generator and an energy storage capacity is acquired. A heredity and particle swarm algorithm is used to carry out optimization programming on the power supply in the microgrid. A programming scheme evaluation method including a stable power supply duty ratio, total investment, a time-shifting electric quantity of energy storage, power supply capacity adequacy and longest running time of the diesel generator is established. Correctness of a programming method and rationality of a programming result are guaranteed.

The present invention relates to a roller type mill with medium speed used for the electric power plant, metallurgy, chemical industry and cement powder making filed. The working principle is that: the milling bowl and the impeller device are rotated in a clockwise manner under the driving of the reducer, and the material falls to the milling bowl by the central falling coal tube, and then moves towards outside along the radial direction under the action of the centrifugal force, and a layer of material bed is formed on the milling bowl, and the material bed is through under the milling roller equipment which can rotate around the shaft. At this time, the milling force produced by the loading unit is pressed on the material by the rotating milling roller. The material is milled to the powder between the milling bowl liner and the milling roller. The material moving in a radial and surround manner carries the powder to pass the edge of the milling bowl to enter the transmission medium channel. The invention is of a novel and scientific design, which adopts hydraulic pressure turning to loading protecting the material with strong adaptability. The milling roller adopts the cone shaped roller shape, and using the special tool directly to turn the outside of the machine body for exchanging the milling roller sleeve, the milling roller bearing and the milling roller oil seal. Exchanging and overhauling the milling bowl liner is convenient, and the inner installing type coal powder separator structure is improved to the hopper shape, and the service life of the coal powder separator is prolonged, and the invention reduces the height of the milling machine and weight as well as the total investment of the project.

The invention relates to a method for optimizing and configuring a power supply of a grid-connection-mode microgrid, which belongs to the field of the optimization planning of an electric network. (when a power output constraint and quality constraint condition of a power supply in the microgrid is satisfied, the configuration capacity of each distributive power supply of each type is optimized and selected, the power construction expense, the operation expense and the damage of the microgrid under the grid-connection mode are adequately considered, a minimal total investment sum is adopted as a target function, a penalty function is introduced, the improved particle swarm optimization is used for solving the function, adaptability of a particle swarm is calculated by utilizing the penalty function when the constraint condition is not satisfied, and an optimal result is enabled to fall in the constraint range). For the operation characteristics of the grid-connection-mode microgrid, complementation of the inner power supply of the microgrid and the traditional power supply of a large grid as well as randomness of wind-optical resource and fluctuation of a load are considered, so that the economical performance of the power investment is optimal when the microgrid under the grid-connection mode satisfies the constraint condition.

The invention relates to an island type arrangement of a drive force area of a fuel electric plant, comprising a steam turbine room, a bunker bay and a boiler room, wherein one side of the bunker bay and one side of the boiler room are combined, which means one side of the bunker bay and one side of the boiler room share the same row of steel columns; the other side of the bunker bay is separated from the steam turbine room by a certain distance; the boiler room is of a steel frame structure; the bunker bay is of a five-layer steel frame structure, and the steam turbine room is of a three-layer structure; and the parts of the steam turbine room, which are below the third layer, are of a reinforced concrete structure or a steel frame structure, and the third layer is of a cambered light steel wire frame structure. The island type arrangement of buildings of the fuel electric plant and the overall arrangement thereof has the advantages of meeting the requirement of production technology process of the fuel electric plant, optimizing the equipment arrangement, reasonably utilizing the space, saving raw materials, causing the construction to be simple and convenient and shortening the construction cycle. According to the arrangement of the invention, the floor space is saved by 1742m, the total volume is saved by 62078.46m, the architectural construction cost is saved by 1036530 thousand yuan, and the total investment of the architectural installation is saved by 1211490 thousand yuan.

The invention relates to a capacity configuration and operation optimization method for combination of photovoltaic energy storage and distributed energy. The method comprises the following steps: (1)collecting the basic data of a distributed energy system and thermodynamic and electric load data curves accurate to hours of one year; (2) configuring the capacity of energy conversion equipment inthe distributed energy system with the optimization objective of minimizing the total annual investment and operating cost of the distributed energy system; (3) determining the operation optimizationoutput curve of the distributed energy system; (4) determining an electric net load curve; (5) collecting the basic data of a photovoltaic energy storage system; (6) according to the basic data of thephotovoltaic energy storage system and the electric net load curve, optimizing the rated power of battery energy storage, rated capacity of battery energy storage and charging/discharging strategiesin the photovoltaic energy storage system with the objective of minimizing the annual total investment and operating cost of photovoltaic energy storage system. Compared with the prior art, the methodof the invention is fast and comprehensive and the result is accurate and reliable.

The invention relates to torsion circular urban rail transmit routes, mainly solving the problem that the urban track routes under programming and building plan have low route-net density among main cities while having extremely long route in the overall urban rail programming, and the total investment is extremely high. The technical proposal is that: an urban rail operation route with an uplink route and a downlink route is provided with at least one loop formed by the self torsion of the route, and the loop is provided with at least one transfer station of the route, the upper layer and the lower layer of which are separated and form vertical crossing, and which can provide vertical transfer for the passengers. The matching of the torsion circular subway of the main cities and the parallel high rise express way of suburban areas forms a backbone public traffic network of big cities.

The invention relates to a short-flow environment-friendly plant for steel production with a rotary hearth furnace continuous steelmaking method and equipment as the cores and with noncoking coal or natural gases as the main energy. Coal dust (natural gases, etc.) and oxygen are jetted into a continuous steelmaking furnace to smelt high temperature pre-reduced metallized pellets provided by the rotary hearth furnace to realize continuous steelmaking, and the molten steel is directly manufactured into the finished products by cast-rolling integration equipment after being refined or is manufactured into the finished products by traditional continuous casting and steel rolling. Meanwhile, the high temperature coal gas generated by a continuous steelmaking furnace is used for the pre-reduced pellets provided by the rotary hearth furnace after being reformed and the other part of high temperature reformed coal gas can be used for traditional continuous casting and steel rolling heating furnaces. The heat of the high temperature waste gas in the rotary hearth furnace is cascade-utilized to preheat the oxygen-enriched air and the pellets for the rotary hearth furnace. The high temperature waste gas in the steel rolling heating furnace is used for preheating the air for the heating furnace. The iron-containing dust is recycled and the steel slag and other dust are used for manufacturing cement. Therefore, the plant has high comprehensive utilization efficiency of energy, low energy consumption, low production cost, less emission and small total investment, and saves land.

The invention discloses a quantitative optimal configuration method of a wind-solar hybrid power system based on a discrete probability model. The method is characterized in that discrete probability distribution is utilized to show random variation factors in the system, and a multi-objective optimization model is established with maximum electric energy adequacy and minimum power supply system total investment and voltage out-of-limit probability being optimization objectives; then, a probabilistic load flow algorithm is subjected to partial improvement, expectation value and increment of a discrete random variable are studied separately, and through moment calculation and semi-invariant conversion, and by applying series approximation, probability distribution of the node voltage and the system electric energy adequacy is obtained, and furthermore, objective functions can be calculated more efficiently and quickly; and finally, the method adopts a parallel-acceleration non-dominated sorting genetic algorithm having an elitist strategy to solve a Pareto optimal solution set of the optimization objectives. Compared with a conventional optimal configuration method, the method can reflect the running state of the system comprehensively, and provides more complete information for policy makers.

The invention relates to a double-layer hierarchical optimization configuration method of an energy storage system in an active power distribution network. The double-layer hierarchical optimization configuration method comprises the steps of building an outer-layer planning model, wherein total investment cost is taken as a target, year is taken as minimum planning unit, and optimization objects are installation position and installation capacity of the energy storage system; and building an inner-layer running model, wherein optimal running economy is taken as a target, day/hour/minute is taken as minimum running unit, and an optimization object is a running control variable of storage energy. An optimal solution of the outer-layer planning model is figured out by mutual relation between the inner-layer running model and the outer-layer planning model, and optimization configuration of the energy storage system in the active power distribution network is further achieved. With regard to unfavorable influence of a distributed power supply on the power distribution network, two different time scale problems of running control and planning design are combined, so that the configuration of the energy storage system can be reasonably optimized, and the economy of the power distribution network is improved.

With the implementation of national new energy policy and electric power system reform, a large number of distributed energies are connected to the distribution network in various forms. In order to ensure the reliability of power supply for power users, power grid enterprises need to consider the uncertainty of new energy sources and provide them with the necessary backup, but to some extent, this reduces the utilization rate of equipment. In order to avoid this negative effect, the distribution network should adopt active operation strategy under the condition of fault, and fully dispatch distributed energy to participate in fault recovery, in order to improve the load rate of distribution network equipment. The invention establishes a programming model which takes the total investment cost is minimum, the risk of losing load is minimum as multi-objective, voltage stability, power flow does not cross line and the like as constraint conditions, and adopts a programming model based onNSGA-II, the multi-objective evolutionary algorithm is used to solve the problem. The range of planned islands and the location and capacity of photovoltaic and energy storage batteries in the islandsare taken into account in the planning. The validity of the model and the method established by the invention is verified by simulation.

The invention discloses an Nd/Sm-Dy/Ho group separation process method of a medium-yttrium europium-enriched ore. P507 is used as a rare earth extracting agent, medium-yttrium europium-enriched ore is used as a raw material, a third outlet is formed in an extraction washing section of a two-inlet-three-outlet fractional extraction system and an acid extraction section with N235 as an acid extracting agent and TBP as a demulsifier is arranged between a washing section and a reverse extraction section; the side effects of hydrogen ions is eliminated by virtue of the acid extraction effect of N235. Compared with the existing Nd/Sm-Dy/Ho group separation process of the medium-yttrium europium-enriched ore, the acid and base consumptions during the rare earth separation process can be significantly reduced, wherein the consumption of a basic reagent is decreased by 58.2%-64.5% and the consumption of hydrochloric acid is decreased by 22.7%-34.2%; the wastewater discharge amount during the extraction and separation of rare earth is significantly reduced and the environmental friendliness degree for separating rare earth is significantly increased; the number of stages of an extraction tank can be reduced by 12.7%-22.2% and the total investment of rare earth extraction and separation processes is decreased; and the quality of heavy rare earth products is improved.

The invention discloses an integrated water purification and supply method, which comprises the following processing steps of: (1) extracting raw water and injecting it into a membrane filtration device for treatment; (2) injecting the effluent water treated by the membrane filtration device into a water storage tank through a water pump; (3) adding a disinfectant into the water storage tank for disinfection treatment; and (4) outputting the disinfected water in the water storage tank directly for water supply. The invention also discloses a corresponding integrated water purification and supply system. The system of the invention maximumly optimizes the system configuration, and substantially saves the total investment and operating cost while ensuring the treatment effect, thus improving popularization and application in the water treatment industry. With two functions of water purification and water supply, the system provided in the invention is a feed water treatment systems and apparatus characterized by effluent water quality consistent with national standards, simple operation, convenient operation management, small floor space, low construction cost, and low running cost.

The invention relates to equipment and a method for preparing chlorosilane from silane through reverse disproportionation. the method comprises the following steps of introducing the tail gas of a polycrystalline silicon reduction furnace, trichlorosilane (or dichlorosilane) and silicon tetrachloride to the reverse disproportionation reaction section for a reverse disproportionation reaction in the presence of a catalyst at the reaction temeperature of 30-80 DEG C and reaction pressure of 0.1-5MPa in a feeding mole ratio of silicon tetrachloride to trichlorosilane (or dichlorosilane) to the feed silane is (3-1000): (0.1-5): 1, so as to generate dichlorosilane; carrying out reverse disproportionation reaction on the generated dichlorosilane and excessive silicon tetrachloride to generate trichlorosilane; discharging the trichlorosilane and hydrogen from the top of the tower and separating in a tower top condenser; and discharging the excessive silicon tetrachloride from the bottom of a rectifying tower. According to the invention, the non-decomposed silane is synthesized into the trichlorosilane through the reverse disproportionation process without a silane storage tank. As a result, the production danger of preparing polycrystalline silicon by the silane method is reduced, and the utilization rate of the raw materials is increased and the total investment on the process is reduced.