48results about How to "Low recycling rate" patented technology

The invention relates to a hybrid energy storage system comprising various energy storage carriers. The system is mainly based on an ordered energy control strategy, the energy storage carriers are selectively discharged in a current-limiting or power-limiting mode through a pulse width modulation (PWM) closed-loop control principle and a monitoring system selective control principle, the advantages of the energy storage carriers are combined and complemented, the disadvantages of the energy storage carriers are overcome, and the aim of ordered energy utilization of different energy storage carriers is fulfilled according to a discharge priority sequence, namely a third energy storage subsystem, a second energy storage subsystem and a first energy storage subsystem. By the hybrid energy storage system, the phenomenon that the power of a power grid fluctuates because a wind and light power generation system or a high-power load and the like are connected to the power grid is avoided, smoothing compensation is realized, the quality of electric energy is improved, and the stable operation of the power grid is ensured.

The invention relates to an automatic garbage sorting, putting and collecting system for a building. The automatic garbage sorting, putting and collecting system for the building at least comprises a building garbage channel, wherein a garbage sorting and collecting unit is arranged on the bottom of the building garbage channel; delivery mechanisms are arranged on the top and the bottom of the building garbage channel; the delivery mechanisms are provided with corresponding delivery units which are spaced according to the floor space; each of the delivery units is provided with a garbage putting hole on each layer, so that the garbage can be put into a garbage platform of the delivery units; the transmission mechanisms operate, so that the garbage or garbage bags on the garbage platform can be delivered to the garbage sorting and collecting unit; the garbage sorting and collecting unit puts the garbage or the garbage bags to a corresponding garbage sorting barrel according to the garbage sorting information. According to the system, the sorting treatment is carried out on the garbage from the source, so that the recyclable garage can be reutilized to the greatest extent, thereby reducing the garage treatment difficulty.

The invention provides a sewage advanced treatment and recycling method capable of substantially raising economy, comprising processes of high efficiency coagulation deposition, ozone oxidation and biochemical treatment, wherein the method is characterized in that a coagulation deposition stage integrates coagulation, flocculation, deposition and sludge backflow, a forced sludge outer circulation backflow mode is utilized, sludge concentration in a flocculation reaction is increased, contact flocculation and deposition net capturing effects of backflow sludge is fully utilized, and a removal rate of COD suspensions is raised, thereby substantially reducing a subsequent additive amount of ozone. In an ozone oxidation stage, COD in sewage id further removed by adding ozone, and biodegradability of sewage is raised. Ozone tail gas generated in the stage is converted into pure oxygen, which is collected and conveyed to a front biochemical stage for providing oxygen required for aeration, thereby reducing operation cost. Biochemical degraded COD generated in the ozone oxidation stage is removed by an aeration biological filtration pool in the biochemical treatment process.

The invention discloses a road pipe trench quick backfill material produced with building wastes and a construction technology thereof. The backfill material is prepared by mixing a building waste renewable coarse material, a building waste renewable fine material, cement, sprayed concrete coagulator shrinkage reducing agent, admixture and water. Building waste renewable products are classified and managed strictly in specification and quality, and are treated with other engineering technologies, so that the material fully utilizes building waste renewable aggregates of various specifications,and meets the technological requirements of pipe trench backfill and requirement of quick setting and hardening at the same time; the hardened material is adjusted in mechanical strength according toengineering need, 2h strength adjustment range is 0.2-1.0MPa, and 28d strength adjustment range is 1.0MPa-6.0MPa. The material utilizes building waste renewable materials generated in city construction to the maximum degree and is quick hardening, early strengthening low-strength concrete suitable for backfilling of city road pipe trenches and grooving.

The invention discloses a low-intensity groove concrete produced by using red brick construction wastes and a construction technology of the low-intensity groove concrete. The construction wastes generated in the city construction process are utilized for recycling, and the low-intensity groove concrete is prepared by stirring a construction waste recycled coarse material, a construction waste recycled fine material, cement, an admixture and water. Through strict classification and management of the specifications and the quality of construction waste recycled products, various construction waste recycled aggregates with various specifications are fully utilized by the materials, meanwhile, the technical requirements of pipe canal backfilling are met, and the mechanical strength of the low-intensity concrete after being hardened is adjusted according to the engineering requirements. A new way for recycling the construction wastes is expanded, the backfilling construction problem that backfilling materials in backfilling construction of some parts cannot be easily compacted effectively is solved, more importantly, the problem that artificial excavation is not facilitated after pipe canal backfilling at present is solved, unnecessary waste resources in municipal engineering are reduced, and meanwhile, the construction wastes with various specifications are fully utilized.

The invention discloses a space truss structure and a construction method thereof, and relates to the technical field of constructional engineering. The problems that an existing steel-structure truss is large in steel consumption, weak in overall rigidity, large in installation and construction difficulty and low in work efficiency are solved. The space truss structure is a space mesh structure formed by continuously splicing a plurality of truss units. Each truss unit comprises a plurality of rod pieces distributed in the axis of the truss unit in the radial direction, wherein the crossed ends of the rod pieces are fixedly connected together through a connecting plate, and each rod piece is made of aluminum alloy. The construction method includes the steps of prefabricating the rod pieces and the connecting plates in a factory, numbering all the components during site installation and construction, making the components correspond to the design drawings one to one, classifying the components, connecting all the rod pieces in the truss units with the connecting plates through bolts, supporting the rod pieces by a concrete structure or a steel column of a building through supports, and then completing splicing and fixing of the space truss structure step by step.

The invention relates to a polyolefin powder capable of uniform mixing with plant small pieces and a preparation method of the polyolefin powder. The powder comprises the ingredients of polyethylene, polypropylene, polystyrene or the mixture of the three, the particle size of the powder is 100nm-1mm, apparent density is 0.18g/mL-0.40g/mL, and the uniform mixing of the powder with the small pieces of plant root, stem, trunk, leaf, and seed case can be achieved through a mixing medium. The preparation process of the powder comprises the following steps of: mixing solid materials in various forms with a special solvent, heating the mixture for dissolution, carrying out thermo-precipitation using a special precipitant, carrying out separation, rolling homogenization and dispersion, separating the solvent and the precipitant for recycling, drying the resulting product, and grinding the dried product. The whole preparation process has the characteristics of material recycling, less volatile matter, strong environment protection and the like; the prepared powder can be applied to preparing an environment-friendly composite material which is further applied to fabricating a container, furniture, a finishing material, a toy and the like; and the prepared powder can be used as raw material for powder coating and a hot melt adhesive material which is easy in uniform coating.

The invention relates to mixing equipment for microcrystalline glass manufacturing, and a microcrystalline glass mixing and manufacturing process. The mixing equipment comprises a base plate, a mixingdevice, a water quenching device and a grading device, wherein the left side of the upper end of the bottom plate is provided with the mixing device; the middle part of the upper end of the bottom plate is provided with the water quenching device, the right side of the upper end of the bottom plate is provided with the grading device, and the water quenching device is positioned between the mixing device and the grading device. The mixing equipment can be used to solve the following problems: existing red mud wastes are usually stored in a stacked mode, so that soil and water sources are polluted due to long-time stacking, and use is influenced; the recycling rate of the red mud wastes is low; when red mud is used for manufacturing microcrystalline glass, production efficiency is low andlabor intensity is high; the red mud cannot be uniformly mixed with added materials; and meanwhile, glass particles are often screened artificially after water quenching, so that working intensity isimproved, operation is complex, labor intensity is large, and working efficiency is low; and the like. Functions of automatic processing, forming and screening are achieved when the red mud is used tomanufacture the microcrystalline glass.

The invention provides a method for recycling tantalum from tantalum-containing alloy waste, which comprises the following steps: (I) performing leaching treatment on tantalum in the tantalum-containing alloy waste by use of hydrofluoric acid; (II) performing extraction treatment on the leachate by use of methyl isobutyl ketone to obtain extraction liquid; (III) performing pickling and impurity removal on the extraction liquid by use of sulfuric acid; (IV) performing back extraction treatment on the extraction liquid after the impurity removal by use of pure water to obtain back extraction liquid; (V) dropwise adding ammonia water into the back extraction liquid to obtain turbid liquid; (VI) filtering the turbid liquid and drying to obtain tantalum hydroxide. In the invention, the research and development work is carried out according to the characteristics that the tantalum-containing alloy raw material contains multiple types of impurities and tantalum is difficult to separate, a new method for recycling tantalum from the tantalum-containing waste is proposed, the tantalum recycling rate is high, and the method has good industrial prospects.

The invention provides a process for comprehensively recovering heat energy and exchanging heat. The process comprises five steps, namely, the step of recovering condensed water, the step of filtering for the first time, the step of softening, the step of filtering for the second time, and the step of reusing. The process is simple in steps, and convenient to operate and control; the comprehensive recycling rate of condensed water and condensed water afterheat can be effectively improved, and moreover, the quality of the condensed water can be effectively improved, thus the recycling efficiency and safety of the condensed water can be improved, and as a result, the purposes of reducing the comprehensive utilization rate of the energy of a heating system and reducing the risk of failure of the heating system due to water scale and other reasons can be achieved.

The invention discloses a nickel cobaltate nano material as well as a preparation method and application thereof. The nano material is spherical, is in the diameter of 0.1-1 mu m, has a porous and hollow structure, has oxygen-rich vacancy defects and has the specific surface area of 20-70 m < 2 >/g. The nickel cobaltate nano material is high in activity and low in preparation cost, the preparation method is simple and easy to implement, large-scale batch preparation can be achieved, and the nickel cobaltate nano material has good industrial application prospects.

A movable freight cableway device comprises a tower and/or suspension-arm movable trolleys. A bearing cable, a pulling cable, a haul-back cable, a lifting cable and an assisting cable are connected and mounted between the suspension-arm movable trolley and the tower or between the two suspension-arm movable trolleys. The steel cables are connectively controlled by winches of the suspension-arm movable trolleys, a small moving trolley is mounted on the bearing cable, and the lifting cable is connected to the small moving trolley. The pulling cable and the haul-back cable are connected to the front end and the rear end of the small moving trolley respectively. The assisting cable is a pulling guide cable during erection of the bearing cable. Bearing platform assemblies, winch assemblies, tower arm assembles, power assembles, hydraulic oil tank assemblies, amplitude changing mechanisms, hydraulic system assemblies, lower trolley assemblies and electric systems are mounted on frames of the suspension-arm movable trolleys. The movable freight cableway device is flexible, convenient and rapid, manpower and material resources are saved, and the movable freight cableway device does not pollute the land and can be reused.

The invention provides magnesium oxychloride cement aggregate which comprises active magnesium oxide, magnesium chloride hexahydrate and glass, wherein the weight rate of magnesium oxide in the active magnesium oxide to the magnesium chloride hexahydrate to the glass is 1:0.9 to 1.1:0.1 to 1, part of glass is distributed in magnesium oxychloride cement and can generate brittle fracture for enhancing the strength of the magnesium oxychloride cement; the other part of the glass is distributed on the surface of the magnesium oxychloride cement for reinforcing the wear resistance of the magnesium oxychloride cement; and because the glass is used as a filler of the magnesium oxychloride cement, not only waste glass resources are thoroughly utilized but also the wear resistance and the strength of the magnesium oxychloride cement are better improved.

The invention discloses a lithium-sulfur battery positive electrode material and a preparation method thereof. Specifically, the lithium-sulfur battery positive electrode material is a sulfur-carbon composite material containing porous-structured carbon with in-situ doped nitrogen and sulfur elements. The preparation method of the lithium-sulfur battery positive electrode material comprises (1) ina high-temperature inert gas atmosphere, carbonizing silkworm excrement to obtain a carbon material with in-situ doped nitrogen and sulfur elements; (2) activating the carbon material through potassium hydroxide to obtain porous carbon; (3) mixing the porous carbon with sulfur at high temperature to obtain the sulfur-carbon composite positive electrode material. According to the sulfur-carbon composite positive electrode material, the carbon and the active sulfur achieve relatively strong physical and chemical effects to effectively inhibit shuttle effects and meanwhile can improve the utilization rate and the structural stability of sulfur. The prepared lithium-sulfur battery positive electrode material is excellent in electrochemical performance and low in cost and has a broad application prospect.

The present invention relates to a hydroquinone preparation method, especially to a method for preparing hydroquinone by adopting a supported solid alkali as a catalyst and carrying out an alkaline hydrolysis reaction on p-chlorophenol and a potassium hydroxide solution. According to the present invention, the supported solid alkali is adopted as the catalyst, the p-chlorophenol and the potassium hydroxide solution are subjected to an alkaline hydrolysis reaction at a certain temperature, the alkaline hydrolysis solution is filtered to recover the catalyst so as to be applied indiscriminately, the filtrate is acidified with hydrochloric acid to achieve the pH value of 2-3, the reaction product is extracted with methyl isobutyl ketone, and the raw material content and the product content in the raffinate are less than 0.05%.

The invention discloses a building protection device which comprises a plurality of guardrail bodies (1), a plurality of fixed upright posts (2) and an F-shaped locking device (11), wherein the fixed upright posts (2) are arranged on the ground (12); the guardrail bodies (1) and the fixed upright posts (2) are alternately connected through the locking device (1) in sequence. The building protection device is simple in structure and convenient to use, rapid assembly and disassembly can be carried out in the using process; the assembly and disassembly time is greatly shortened; certain work efficiency is improved; meanwhile, the building protection device can be recycled for installation and use for a plurality of times; the recovery rate of the guardrails are improved; and the use cost is greatly reduced.

The invention provides powder metallurgy titanium-based alloy waste precious metal recycling equipment. The powder metallurgy titanium-based alloy waste precious metal recycling equipment comprises amain body, a reaction cavity is internally provided with a reaction cavity body with an opening being upward, the inner wall of the lower side of the reaction cavity body is fixedly provided with a supporting vertical column, the supporting vertical column and the inner wall of the lower side of the reaction cavity body are internally provided with extraction liquid circulation devices, the supporting vertical column is externally provided with supporting sleeve columns capable of sliding relative to the supporting vertical column in a sleeved manner, the arc-shaped end faces of the outer sides of the supporting sleeve columns are fixedly provided with a material placing rack device, the material placing rack device can be used for placing titanium alloy waste to be recycled, the inner walls of the left and right two sides of the reaction cavity body are internally provided with lifting cavities communicating with each other, and the lifting cavities are internally provided with liftable devices. The powder metallurgy titanium-based alloy waste precious metal recycling equipment aims to design a device capable of recycling precious metals in a titanium-based alloy through a soakingreaction method.