662results about How to "Achieve economy" patented technology

The invention discloses a composite reagent for treating recycled water of printing and dyeing wastewater and an application method of the composite reagent. The composite reagent comprises the following components by weight percent: 20% to 70% of aluminum salt coagulant, 5% to 30% of iron salt coagulant, 5% to 40% of mineral material and 5% to 45% of activated carbon. The method comprises the following steps: preparing the composite reagent for treating the recycled water of the printing and dyeing wastewater into powder or an aqueous liquid in which the content of effective components accounts for 5% to 30%; regulating a pH value of effluent in a printing and dyeing wastewater biochemical system to be within 3 to 9; adding the powder or the aqueous liquid of the composite reagent into the effluent in the printing and dyeing wastewater biochemical system under the condition that the adding quantity of the effective components is between 20mg / L and 1000mg / L after the pH value of the effluent is regulated; and stirring for 0.2 to 2 hours and then standing so as to obtain the recycled water conforming to the water quality standard in textile industry. According to the method, macromolecular colloidal pollutants in the biochemical effluent of the printing and dyeing wastewater, which are difficult to degrade, can be removed by utilizing the coagulation / flocculation performance of aluminum salts and iron salts in the composite reagent; and meanwhile, soluble inert pollutants in the wastewater are removed by utilizing the adsorbability of the activated carbon and the mineral material in the composite reagent.

The invention discloses a method for preparing nano copper conductive ink, which can be applied in the field of printing electronic technology, in particular ink jet printing technology. The preparation method comprises the following steps of: dissolving copper salt and protective agent into a solvent, heating and stirring the solution, adding a small amount of alkali solution to adjust the pH ofthe solution to between 7 and 10, dripping a reducing agent into the solution, continuously stirring the solution to react for 30 to 60 minutes, and then cooling the reaction solution to room temperature to obtain nano copper dispersion; performing centrifuging, washing and vacuum drying at room temperature on the nano copper dispersion to obtain nano copper granules; and dispersing the nano copper granules into an organic solvent, and ultrasonically treating the solution to obtain the nano copper conductive ink. The method solves the problems of complex preparation process and long preparation period in the prior art, has the advantages of simple and convenient operation, low production cost, short flow and no harmful waste generation, and realizes the goals of environmental protection and economy; and the prepared nano copper conductive ink has good dispersion property and high stability.

The invention relates to a dynamic capacity increasing method for an oil-immersed transformer, and belongs to the field of transformers. The method includes the steps that heat conduction process in the transformer is simplified into a circuit model; winding hot-spot temperature, top oil temperature, average oil temperature, average winding temperature of the transformer under the current load condition are calculated; according to the limit that the winding hot-spot temperature does not exceed 140 DEG C, whether temperature in the transformer will exceed the limit temperature or not under the current load and environment conditions is calculated, whether a temperature limit value is reached or not if long-term emergency loads or short-term emergency loads occur at the moment is calculated, and if the temperature in the transformer possibly exceeds the limit value of the short-term emergency loads, the time for reaching the limit value and the finally reached steady state temperature are calculated to serve as alarm signals; if it is monitored that the temperature will exceed the standard within t minutes, an early-warning signal is sent out, certain time delay is set, and if the loads are not reduced within the set time delay, a cooling fan of the transformer is turned on. Long-term continuous operation of cooling equipment can be avoided, and operation life of the cooling equipment is prolonged.

An electric power-generating device with a rotor turned by an external source of energy, such as wind or water currents. The rotor is coupled to a main shaft. A pair of bull gears is located on the main shaft. A number of intermediate gears are located around a perimeter of the bull gears. An intermediate gear is connected to an input shaft having a double helix pinion that engages the pair of bull gears. The other intermediate gears are similarly connected to respective input shafts having double helix pimons that engage the pair of bull gears. A plurality of output shafts is provided. An output shaft has a single-helix output pinion that engages two adjacent intermediate gears. The other output shafts are similarly connected to respective adjacent intermediate gears. A number of rotational devices are connected to the output shafts.

The invention discloses a shared bicycle cloud platform hotspot unlocking method, and belongs to the shared bicycle unlocking networking field, and the shared bicycle cloud platform hotspot unlocking method comprises four parts of a cloud platform (a plurality of servers for offering external services), hotspots (comprising a radio frequency transmitter chip, an Ethernet chip, a GPS chip, a micro computer or a microcontroller), electronic locks ( comprising wireless a radio frequency transmitter chip, a microcontroller, a rechargeable battery and a solar panel) and mobile phone APP software. Through the simple electronic lock design, the shared bicycle cost can be reduced, the flexible parking demand of a bicycle around the hotspots can be solved, the problem of high cost can be avoided, real name authentication can be completed by a mobile phone APP, a bicycle and a person can be bound, and after the bicycle is damaged, the person can be traced back. Through the above technical means, the convenience for public travels with the lowest possible cost can be met.

The invention discloses a method for calculating the optimal admitting ability for wind power multipoint access of a regional power grid and belongs to the technical field of wind power penetration methods of the power grid. The method for calculating the optimal admitting ability for the wind power multipoint access of the regional power grid comprises the steps that the installed capacity of all wind power plants is initialized, and data such as the local wind speed are acquired; the output condition of all the wind power plants is calculated, and unit commitment and optimization within all dispatching cycles are conducted, so that an annual unit commitment mode of an electric power system comprising the wind power plants is obtained; power flow calculation is conducted based on each period of time, whether an operation constraint condition of the system is met is verified, and a final objective function value is calculated after simulation is conducted on the system for more than 8760 hours; the installed capacity of the wind power plants is updated, optimized iteration is conducted on an objective function, and optimal solution of the wind power generating capacity is achieved, namely the optimal admitting ability of the power grid which enables the economical efficiency of the system to be optimized on the premise that the safety and stability constraint conditions are met is achieved. According to the method for calculating the optimal admitting ability for the wind power multipoint access of the regional power grid, an optimal wind power admitting capacity calculation model with the largest net earning of a wind power plant and power grid combination system (with the environmental benefit considered) as the purpose is established, and suggestions can be provided for the proper establishment of the installed capacity of the regional wind power plants.

The invention discloses an economical non-quenched and non-tempered micro-alloyed plastic die steel plate and a making method thereof. The economical non-quenched and non-tempered micro-alloyed plastic die steel plate comprises 0.32-0.40wt% of C, 0.20-0.50wt% of Si, 1.00-1.50wt% of Mn, 1.20-1.70wt% of Cr, 0.20wt% or less of Mo, 0.0025wt% or less of B, 0.03wt% or less of Ti, 0.03wt% or less of Nb, and the balance Fe. The making method comprises the following steps: carrying out converter smelting, LF+RH refining and continuous slab casting; heating the obtained slab at 1200-1230DEG C, carrying out precision rolling at 900-950DEG C, and carrying out finishing rolling at 870-920DEG C; carrying out controlled cooling after the steel plate rolling; and tempering the steel plate obtained after the controlled rolling and controlled cooling at 550-600DEG C to obtain the finished pre-hardened plastic die steel plate having a bainite structure. The yield strength, the normal temperature impact toughness and the cross section hardness of the steel plate are above 800MPa, above 20J and 310-350HB respectively. The making method is suitable for the production of pre-hardened plastic die steel plates with the specification of below 120mm from 320mm continuous casting blanks.

An air dryer system including two substantially identical canister-type air dryer units. Each includes a moist air inlet, a first desiccant, a dry air outlet, and means for supplying dry air to a storage facility. The system also includes a bleed valve supplying a small portion of the dry air to regenerate a second desiccant, and a first moist air purge valve. The system operates in the opposite mode and supplies air to a storage facility. Located between the moist air inlets and the desiccants are a pair of air-oil separators. In these, upwardly directed air flows through a housing, striking a deflector plate, and escapes beneath a vertically extending fence and through vents containing a filter medium.

A kitchen garbage disposal method is characterized by including steps of 1, sterilizing, deodorizing, and adding hydrolyzing protease into kitchen waste; 2, screening and crushing the kitchen garbage, sorting wastes such as glass and ceramics which cannot be disposed from deodorized garbage automatically, crushing the residual waste by a crusher; 3, performing solid and liquid separation, separating suspended matters with thickness of 2mm at least and solids and squeezing to dewater to form a tailing product, and discharging oil water into an oil and water separator; 4, performing oil and water separation to separate heavy oil, light oil, sewage and sludge and the like in waste water of the kitchen garbage, feeding the separated oil, sewage and sludge into an oil storage barrel, a sewage treatment device and a sludge collection barrel respectively; 5, purifying sewage by details of feeding the separated sewage into a sewage purifying system which is provided with air flotation and reverse osmosis devices; and 6, treating the tailing solid products by details of hydrolyzing the tailing solid subcritically, subjecting dynamic fermentation to the tailing solid products for two to three days after subcritical hydrolysis treatment, and finally obtaining an organism modifier for soil.

The invention relates to a method for preparing a sintered mixture from municipal sludge and iron containing metallurgical dust, which belongs to the technical field of resource recycling of the municipal sludge and the iron containing metallurgical dust. The method comprises the following steps of: preparing raw materials from 5-50 percent by weight of municipal sludge and 50-95 percent by weight of iron containing metallurgical dust, adding 0-20 percent by weight of water into the raw materials, then mixing and granulating to produce a sintered granular material, and using the sintered granular material as the mixture to be mixed into a sintering working procedure, wherein the proportion mixed into the sintering working procedure is 0.5-10 percent by weight of the total sintered raw materials quality. The method has the advantages that the processing flow of the municipal sludge is transferred to the mature sintering process flow of ferrous metallurgy, avoiding the problems of new energy consumption, secondary pollution and the like caused in traditional landfill and sintering processes of the municipal sludge, thereby recycling effective elements in the metallurgical dust and the municipal sludge in the steel production flow, improving sintering production process conditions to a certain degree and improving the sintering production efficiency.

The invention discloses a method for treating the waste emulsion with high concentration and a plurality of varieties by an ultrafiltration membrane method and a device thereof, which belongs to the technical field of waste water and waste liquid treatment. The main technique of the invention is 'dissolved air flotation-ultrafiltration membrane-electrolysis floatation', which can effectively reduce the dosage of medicament and improve emulsion breaking effect by adopting an efficient dissolved air flotation system, moreover, the water for dissolved air flotation, which is taken from a subsequent intermediate water tank, can flexibly adjust and dilute the concentration of the waste water, thus improving the running stability and the shock resistant loading capability of the system. An ultrafiltration membrane with large flux, high separative efficiency and long service life is adopted in an ultrafiltration system to realize oil-water separation and to concentrate the emulsion for a plurality of times and then floating oil is recovered, the waste water generated in ultrafiltration washing is treated again after reflow, thus reducing waste liquid discharging. Electrolysis floatation can remove residual emulsified oil and dissolved oil in the waste water, thus further lowering the COD value of yielding water. When the quality of raw water is changed, an activated carbon adsorption unit can guarantee the quality of the yielding water to be standard. The method and the device of the invention can process waste emulsion with high concentration and a plurality of varieties and have simple and reasonable technique, good quality of yielding water, compact layout of the device, thus facilitating automatic control and realizing recovery of emulsion and recycle economy as well as changing waste to be profitable simultaneously.

The invention belongs to the field of the environmental engineering polluted site soil restoration, and particularly relates to a method for restoring polychlorinated biphenyl polluted site soil. The method comprises the following steps: synergistic elution, primary chemical treatment, secondary chemical treatment, anaerobic organism treatment and aerobic organism treatment. For the soil restoration problem of the real polychlorinated biphenyl polluted site, a restoration process combining the chemical treatment of chemical elution, acid regulation, zero-valent iron dechloridation, iron carbon micro-electrolysis, catalytic oxidation, biological anaerobic dechloridation and biological aerobic oxidation and biological treatment. Various effects such as chemical dechloridation (dechloridation effect of zero-valent iron), chemical oxidation (iron carbon micro-electrolytic effect of the zero-valent iron and active carbon and catalytic oxidation effect of oxidized medicine), biological anaerobic dechloridation effect and biological aerobic oxidation effect are reasonably integrated in one technology, so that the optimization of technology, economy, practicability and feasibility is realized.

The invention discloses a method for removing sulfur dioxide in fumes with the by-product of gypsum produced by white mud in the ammonia-soda factory. With such method adopted, the efficiency of removing the sulfur dioxide is more than 95 percent, the purity of the by-product of the gypsum is more than 85 percent, and the water content of the gypsum is less than 4 percent. The method is realized by the following technical proposal: white mud slurry is used as an absorbent for removing the sulfur dioxide; in the spray tower absorbing zone, the white mud slurry reacts with the sulfur dioxide to generate calcium sulfite and calcium bisulfite; the calcium sulfite and the calcium bisulfite are catalyzed and oxidized into calcium sulfate in the oxide crystallization pool; the calcium sulfate is crystallized into gypsum; and gypsum slurry is concentrated, washed and dehydrated, and dried, and then changed into the finished product of gypsum. The method for removing the sulfur dioxide in fumes, which uses waste to restrict waste, not only realizes clean production and circular economy in the ammonia-soda industry, but also provides a more economical sulfur dioxide removing method for surrounding power plants in the ammonia-soda industry, thereby realizing bidirectional treatment of the waste. Furthermore, the by-product of the gypsum has wide commercial prospect after dried.

The related innocent treatment method for ardealite as by-product in wet method comprises: adding water and repulping, alternative vacuum filtering and cleaning by water to remove the water-soluble P2O5 and F, returning the filtered liquid to recover the P2O5 and F; sending the cleaned gyps for building, or wet slagging off to send to neutralize with limestone till pH value>=4.5, clearing to obtain the sediment. With low cost, this invention reduces ardealite danger, and improves source utility.

The invention discloses a hybrid power energy management system of a trolley car and a control method. The system comprises a fuel cell array, a one-way isolation type DC-DC (direct current) converter in cascade connection with the fuel cell array on the basis of a full-bridge no-voltage no-current switch topological structure, a storage battery, a two-way isolation type DC-DC converter in cascade connection with the storage battery on the basis of a full-bridge no-voltage no-current switch topological structure, a supercapacitor, a two-way isolation type DC-DC converter in cascade connection with the supercapacitor on the basis of a full-bridge no-voltage no-current switch topological structure, an energy management unit based on a DSP (digital signal processor) controller, an interface extension unit based on an FPGA (field programmable gate array) controller, a voltage acquisition and conditioning circuit, a current acquisition and conditioning circuit, a weak current supply unit and a brake resistor. The system can supply energy to a load quickly, the response speed of the system to the load is increased, the brake power can be recovered as much as possible, the fuel availability is improved, the purpose of fuel economy is achieved, the service life of the storage battery is prolonged, and the cost is reduced.

The invention relates to a method for use in the technical field of new energy power generation, in particular to a method for making a power generation absorption scheme for new energy power stations based on price bidding. The method comprises the following steps: A, issuing load prediction and new energy power generation acceptance capacity of a next day; B, submitting the on-grid energy and electricity prices at the closing auction of the next day by the new energy power stations; C, sequencing the power stations according to the on-grid energy and electricity price submitted by each new energy power station, and determining power purchasing plans and electricity prices for corresponding periods of the next day; D, making power generation plans of corresponding periods according to the power purchasing plans by each new energy power station. By using the method in price bidding of new energy, the power purchasing cost in the entire period of a power generation plan is minimized, vicious competition among the new energy power stations can be avoided, and maximum absorption and economical running of new energy power generation are realized.

The invention provides a microgrid multi-time scale energy management method based on the demand side response, which comprises the steps of S1, establishing an interruptible load model; S2, establishing a multi-energy interaction mechanism; S3, determining an objective function and constraint conditions of a day-ahead scheduling stage; S4, establishing a transferable load model; S5, establishinga penalty function for energy storage of a storage battery; S6, determining an objective function and constraint conditions of an intra-day scheduling stage; S7, correcting the day-ahead scheduling stage plan according to an output plan value of each energy source of the day-ahead scheduling stage; S8, establishing a closed-loop control system; S9, determining an objective function and constraintconditions of a real-time scheduling stage; S10, carrying out real-time feedback correction on the intra-day scheduling stage; and S11, carrying out simulation and verification. The invention providesa multi-time scale energy management method with multi-stage coordination and step-by-step refinement, scheduling strategies in different scheduling stages are designed according to resources at thepower generation side and the demand side, and the matching of load and renewable energy power generation in time sequence is facilitated.

Discloses is an intelligent optimization scheduling method of a cascade hydroelectric centralized control station automation system. Artificial estimation and scheduling for a cascade hydroelectric station are modified into intelligent optimization scheduling of the cascade hydroelectric centralized control station automation system, and factors like basic water conditions of a drainage basin and electrical safety operation are taken into comprehensive consideration through intelligent optimization scheduling software; based on the flow equilibrium principle in the whole drainage basin and according to cascade load curves or real-time active target values given in a cascading manner through high scheduling, a machine set controlled by involvement of a cascade hydroelectric station is automatically allocated with the active load through fast cascade simulation triggered through events and a quantum evolutionary scheduling algorithm, an economic scheduling scheme is put forward at present and within follow-up period of time, and automatic generation control is performed on all levels of the hydroelectric stations.

The invention discloses a multi-hierarchy relationship information management system based on cloud computing. The multi-hierarchy relationship information management system based on the cloud computing comprises a cloud service platform and a client. The cloud service platform comprises a physical resource layer used for storing information data of all organization hierarchy units, a processing platform layer used for processing the information data on the physical resource layer, a displaying application layer used for displaying the information data and a management layer used for managing and maintaining the physical resource layer, the processing platform layer and the displaying application layer. According to the multi-hierarchy relationship information management system based on the cloud computing, a mode of one longitudinal layer and three transverse layers is provided and used for supporting the whole multi-hierarchy organization structure, and the whole system is made to meet requirements for 'one base, one platform, and one network' due to the fact that the multi-hierarchy relationship information management system based on the cloud computing is established. In addition, rich cloud computing abilities and a friendly user interface are provided, and the purpose that mass information is obtained from the interior of an organization, applied to the interior of the organization and analyzed by the interior of the organization is achieved. Therefore, safety performance and the information sharing rate of the system are improved, resources are utilized efficiently, and requirements that information is more integrated, supervision is more strict and decision-making is more convenient are met.

The invention provides a method for processing acidic etching waste solution of a printed circuit board, wherein the acidic etching waste solution comprises hydrochloric acid and copper chloride. The method comprises the following steps: adding ammoniac regulation solution in the acidic etching waste solution for converting the acidic etching waste solution into an ammoniac etching solution system with the pH value above 7.5, and then carrying out copper extraction. The processing method improves the copper extraction efficiency and ensures that the recovery rate of metallic copper can reach above 99.3 percent; the raffinate is processed to obtain ammonium chloride which can be directly reused for an etching process according to requirements, and the recovery rate of the ammonium chloride can reach above 99.9 percent, thereby not only saving resources, but also avoiding the environment pollution, and really achieving recycling economy and clean production.

An upper limit value of an upward gradient of a road surface for starting neutral coasting is set to be larger than an upper limit of the upward gradient of the road surface for starting free-run coasting, so, when the upward gradient is relatively large and a coasting distance is short, the vehicle is caused to travel in the neutral coasting, and stop and restart of the engine are not carried out. Therefore, a decrease in drivability of the vehicle is suppressed. When the upward gradient is relatively small and the coasting distance is long, the vehicle is caused to travel in the free-run coasting, and supply of fuel to the engine is stopped, so fuel economy of the vehicle is obtained. Thus, it is possible to achieve both fuel economy and drivability of the vehicle during coasting on an upward gradient.

The invention discloses a method for utilizing comprehensive resource of sulfur-containing solid waste, which comprises the following steps: (1) pyrolyzing sulfurous iron ore to obtain pyrrhotite and an elemental sulfur product; (2) mixing the pyrrhotite, a carbon-containing substance and a calcium-containing substance to carry out reduction reaction under a high temperature to obtain a solid mixture of elemental iron and calcium sulfide; (3) magnetically separating the solid mixture, and separating and recovering the solid mixture to obtain the elemental iron; (4) mixing and heating the solid containing the calcium sulfide and dehydrated gypsum to obtain tail gas containing SO2 and solid containing calcium oxide; and (5) separating the tail gas containing the SO2 through liquefying to obtain a liquid SO2 product, and using the solid containing the calcium oxide as the calcium-containing substance to participate in the reaction of the step (2) and as flue gas desulfurizing agent for cyclically utilization. The method solves the problems of occupied floor due to the stacking of desulfurization gypsum and coal washing sulfurous iron ore, environment pollution and potential safety hazard, makes full use of calcium, sulfur and iron resources rich in the wastes, and can realize recycling economy and clean production.

The invention relates to a method for optimizing the proportion of high-proportion renewable energy under the cooperative access of transmission and distribution network, which comprises the followingsteps: 1) acquiring basic data; 2) clustering based on that basic data to obtain a typical plan scene; 3) for that typical plan scenario, establishing a collaborative planning model of transmission and distribution network, The objective of the collaborative planning model is to minimize the cost. The constraints include the independent constraints of the transmission and distribution network andthe collaborative constraints of the transmission and distribution network. The decision variables include the investment capacity of renewable energy units in the transmission and distribution network, the power generated by conventional units, the discarded energy power of renewable energy sources and the load shedding power of renewable energy units. 4) solving that transmission and distribution network collaborative planning model to obtain the optimal renewable energy investment capacity scheme; 5) obtaining the optimal distribution ratio of the high-proportion renewable energy in the transmission and distribution network based on the optimal renewable energy investment capacity scheme. Compared with the prior art, the invention has the advantage of high accuracy, strong practicability and high efficiency.

The invention discloses a method for recycling overhauling slag waste cathode carbon blocks of an electrolytic bath. The method is characterized by comprising the following steps: separating the overhauling slag of the electrolytic bath to obtain waste cathode carbon blocks; respectively conducting water leaching to the separated waste cathode carbon blocks, conducting secondary smashing and water leaching to the separated blocks, recycling the separated blocks, grinding and floating the rest powder, and separating carbon powder from the rest powder. According to the method, fluoride salt difficultly removed from the overhauling slag waste cathode carbon blocks of the electrolytic bath can be separated, the recycling value of the overhauling slag waste cathode carbon blocks of the electrolytic bath can be improved, the overhauling slag waste cathode carbon blocks of the electrolytic bath can be changed into valuables, the overhauling slag waste cathode carbon blocks of the electrolytic bath can be economically recycled without pollution, thereby fundamentally removing the hidden pollution hazard.

The invention belongs to the field of solid waste reclamation comprehensive utilization and particularly relates to a soil conditioner prepared from sludge and a preparation method thereof. The soil conditioner is prepared from river and lake bottom mud, conditioner, medium sand, agricultural and forestry residues, biological manure and plant ash, wherein the conditioner is 5% to 8% of the mass of the river and lake bottom mud, the medium sand is 5% to 10% of the mass of the river and lake bottom mud, the agricultural and forestry residues are 5% to 10% of the mass of the river and lake bottom mud, the biological manure is 1% to 5% of the mass of the river and lake bottom mud, and the plant ash is 1% to 3% of the mass of the river and lake bottom mud. The soil conditioner prepared from sludge disclosed by the invention achieves resource utilization of sludge, also fully utilizes sludge, tailings or river and lake sand, tailing sand, pipe network sand and agricultural and forestry residues at the same, achieves the purpose of treating waste through waste, avoids solid waste landfill, land occupancy and secondary pollution, reduces engineering cost of land reclamation, landscaping, forest land plant and the like and is beneficial to ecological environment; in addition, the river and lake sand, the tailing sand, the pipe network sand and the agricultural and forestry residues are separated and sorted from pipe network sludge.

The invention discloses a low-carbon and environment-friendly fish-farming method. The method comprises the following steps: (1) performing cage culture in a pond and assembling a fish feces recovery system and a translation bottom sewage self-leaking system under a cage to recover fish feces, so that sewage and deposits at the bottom of the pond are discharged effectively, and pollution of fish feces and residual feeds on a water body is lowered; (2) arranging aeration equipment outside a cage culture zone to promote flow of the upper, lower and surface layers of the water body and increase dissolved oxygen of the water body; (3) planting aquatic plants in a floating bed and combining pond culture and wet land planting and culture outside the cage so as to realize coexistence of fishes and vegetables and biologically purify water; (4) performing scientific fish culture by adopting a scientific culture mode represented by seven words, namely, water, planting, feed, prevention, separation, mixing and labor. According to the low-carbon and environment-friendly fish-farming method, the current-stage pond fish culture facility is changed, engineering of innovative culture equipment is realized, scientific design and scientific layout are achieved, scientific combination of comprehensive technologies such as physical and biological purification and the like is performed, combination with an ecological and environment-friendly culture technology is realized, and integrated innovation is implemented.

The present invention relates to a method for separating a lignocellulosic raw material by an improved formic-acid-pretreated lignocellulosic biomass, according to the method, an oxidizing agent is added into a formic-acid solution to significantly improve the selectivity of pretreatment separation of cellulose, hemicellulose and lignin, and the recovery rate of the three components of the cellulose, hemicellulose and lignin can be increased.

The invention belongs to the technical field of solid waste comprehensive utilization, and relates to a method for recovering valuable metals from nickel-copper molten slag through selective reduction. A process comprises the steps that: nickel-copper smelting slag is subjected to selective reduction under a high-temperature molten slag state, such that nickel, cobalt, and copper valuable metals in the slag can be completely reduced; the reduction of a small amount of iron is controlled, such that an intermediate alloy rich in nickel, cobalt, and copper is produced; most of the rest molten slag exists in a form of iron silicate; a solvent and a reducing agent are added, such that iron in the molten slag is completely reduced, and crude iron containing trace nickel, cobalt, and copper can be produced; and crude iron is adopted as an iron alloy and steelmaking raw material. The method provided by the invention has the advantages that a high-temperature nickel-copper smelting molten slag stepped selective reduction process is adopted, and nickel-copper smelting slag is utilized under a molten state, such that slag secondary heating cost is saved, valuable metal graded utilization is realized, product market application field is widened, and solid waste economical and effective utilization is realized.

The invention discloses an energy storage multi-connected air conditioning unit. The energy storage multi-connected air conditioning unit comprises an outdoor unit, an indoor unit and a plurality of refrigerant pipelines for communicating the outdoor unit with the indoor unit, wherein the outdoor unit comprises a gas-liquid separator, a compressor, a first control valve, an outdoor heat exchanger, a second control valve, an energy storage device, a gas pipe stop valve and a liquid pipe stop valve; the input end of the compressor is respectively connected with the output end of the gas-liquid separator, the gas pipe stop valve, the indoor unit and the liquid pipe stop valve through the refrigerant pipelines. According to the energy storage multi-connected air conditioning unit provided by the invention, the refrigerating capacity can be stored in an electricity valley period or in a low inner machine load period and can be released in an electricity peak period or in a high inner machine load period, so that the purpose of quick refrigeration is reached, and the economical efficiency of refrigeration operation is realized; moreover, heat can also be stored in the electricity valley period or in the low inner machine load period, and the energy storage multi-connected air conditioning unit is used for providing heat for defrosting the outdoor unit, so that the defrosting operation time is shortened, and the whole heating capacity of the system is improved.

The invention discloses a distribution network reconstruction optimization method based on multi-objective optimization. The method includes the following implementation steps that the current system losses, the load balance index and the minimum node voltage of a distribution network are respectively calculated, whether reconstruction optimization is needed or not is judged, if reconstruction optimization is needed, the distribution network is reconstructed, and then an optimal topological structure is acquired; when the load balance index or the minimum node voltage exceeds threshold values, network reconstruction operation is directly executed, when only the system losses exceed threshold values, an economic benefit evaluation index needed for switching the distribution network from the current topological structure to the optical topological structure is calculated, and if the index is larger than a designated threshold value, it is judged that economic benefit evaluation passes and the network reconstruction operation is executed; or else evaluation does not pass and the network reconstruction operation is not executed. The reconstruction optimization effect of the distribution network is good, economic benefit evaluation can be conducted before execution of the network reconstruction operation, waste is avoided, use is convenient, resources are saved, and economical efficiency and safety are good.