45results about How to "Realize green and sustainable development" patented technology

The invention discloses a photovoltaic power storage distributed power generation alternating current traction power supply system and method. Anexistingout-phase power supply traction power supply system partition station is used foraccessing a photovoltaic power generation and storage system to the tail ends of traction networks of the left side and right side power supply partitions, bilateralpower supply is realized in each independent power supply partition through the distributed photovoltaic power generation and storage system, and double-end power source bilateral power supply of a traction power substation and a partition station photovoltaic power generation and storage systemis formed. According to the photovoltaic power storage distributed power generation alternating currenttraction power supply system and method,when the traction network is normal, the bilateral power supply of the traction power substation and the partition station photovoltaic power storage is enabledin the independent power supply partition, when the traction power substation malfunctions, cross-regional power supply by multiple power sources is realized by the adjacent traction substation and the partition station photovoltaic power storage, the voltage level of the traction network is improved, the power supply capacity is improved, and power is uninterruptedlysupplied for electric locomotives or electric motor train units; and at the same time power storage recycles locomotive regenerative feedback energy, the problem of high voltage level at the head end of the traction network caused by foldbackis avoided, and the stability and reliability of traction power supply is improved.

The invention relates to a carbon-based lithium ion battery negative electrode material taking sludge as a precursor and preparation of the carbon-based lithium ion battery negative electrode material. During preparation, the sludge is carbonized and processed in advance, and the carbon-based lithium ion battery negative electrode material is obtained by sequentially performing washing and drying after pickling and alkali activation. Compared with the prior art, the carbon-based lithium ion battery negative electrode material has the advantages of greenness, environmental friendliness, simple preparation process and low production cost, the resource utilization of the sludge can be achieved, and the prepared carbon-based lithium ion battery negative electrode material is high in specific area and specific capacity and good in cycle property and has wide application prospect.

The invention provides sea pebble, sea sand, seawater and regenerated micro-powder concrete which comprises the following components in percentage by weight: 7-25% of cement; 0-7.5% of regenerated micro-powder; 0-55% of sea pebble; 0-55% of regenerated broken stone; 20-25% of sea sand; 5-7.5% of seawater; 0-2% of plant fibers; and 0-0.2% of a water reducing agent. The invention further provides apreparation method of the sea pebble, sea sand, seawater and regenerated micro-powder concrete. According to the preparation method of the sea pebble, sea sand, seawater and regenerated micro-powder concrete provided by the invention, resource utilization is carried out on the sea pebbles, the regenerated gravels, the sea sand, the seawater and the regenerated micro-powder, so that the problems ofresource consumption, environmental pollution and the like in concrete production and after scrapping are solved; and the tensile strength and toughness of the sea pebble, sea sand, seawater and regenerated micro-powder concrete are improved through the plant fibers.

The invention provides a method for magnetizing and roasting iron tailings through biomass. The method comprises the following steps that firstly, crushing the iron tailings, and grinding to -0.074 mm to obtain iron tailing powder; crushing the biomass to obtain biomass powder; separately placing the iron tailing powder and the biomass powder at different parts in the same heat-resistant closed container, and carrying out magnetizing and roasting at 600-750 DEG C; and finally, cooling, grinding and magnetically separating the roasted iron tailing powder to obtain magnetite concentrate. Weakly magnetic oxides such as hematite in the iron tailings are converted into strong magnetic magnetite by reducing gases such as H2 and CO generated by biomass pyrolysis, the biomass and the iron tailings are separately roasted to prevent agglomeration, impurities such as silicon and aluminum are removed by adopting processes such as grinding combined with magnetic separation, and the iron grade and the iron recovery rate of the magnetite concentrate are effectively improved.

The invention relates to a deep sea water intaking development and comprehensive utilization ocean platform, a platform main body comprises an upper deck and a buoyancy tank which has a planar view angle and is profiled with the upper deck, the upper deck comprises a central area and three extension parts which extend from the central area to the periphery and are arranged at equal angles; the lower part of the extension part is fixedly connected with the buoyancy tank through a corner upright post; a center stand column used for storing deep seawater and increasing the waterline area is arranged at the center, located between the upper deck and the buoyancy tank, of the platform body. A deep seawater utilization facility is arranged in the central area above the upper deck; the deep sea water utilization facility is connected with a plurality of deep sea water taking pipes, surface sea water taking pipes and mixed sea water drainage pipes, and the deep sea water taking pipes, the surface sea water taking pipes and the mixed sea water drainage pipes penetrate through the upper deck and extend downwards into sea water.

The invention discloses a new energy power supply system and a control method for urban rail traction network, including an independent energy storage system located in the middle section of the line and a wind-solar-storage combined power generation system located in the depot or parking lot at the end of the line; according to offline prediction data, Obtain load forecast power and expected peak-to-valley values ​​from historical data, and then judge whether there is a load based on urban rail traffic data; judge operating conditions based on real-time voltage, and compare the load forecast power and expected peak-to-valley values ​​at the next moment to judge whether it is load operation According to the peak and valley state, different control strategies are determined by judging the results, so as to realize effective control of the energy storage device in the independent energy storage system, the wind-solar combined power generation device and the energy storage device in the wind-solar-storage combined power generation system. The invention can not only promote the consumption of renewable energy such as local scenery, but also improve grid voltage fluctuations, effectively recycle regenerative braking energy and at the same time cut peak loads and fill valleys, reduce urban rail operating costs, and have good economic benefits.

The invention discloses a shallow surface ecological water protection method based on the stagnation effect of key layers in mining space, utilizes the development and closure of hard rock layers (key layers) to separate layers and has a certain delay time, and according to the theory of key layers and the mechanical strength of rock layers, finds out-of-surface layers One or more key layers that are nearest and have a certain development delay time, drill holes in the key layer in advance, and set up a monitoring system in the hole; when the separation layer develops below the key layer, the monitoring system automatically recognizes and starts The grouting pump performs rapid grouting, and fills the separation space with grout before the key layer is broken and bent to block the upwardly conductive mining space, so as to prevent the mining from damaging the shallow rock formation and shallow surface water, and at the same time increase the The strength of the rock mass structure forms a "protective circle" for the shallow surface rock formation, prevents the loss of shallow surface water and surface subsidence, and protects the surface ecological water level, which is beneficial to the ecological protection of the ecologically fragile areas in the west.

The invention discloses active powder concrete doped with coal ash and a preparation method of the active powder concrete. The active powder concrete doped with the coal ash is prepared from the following materials in parts by weight: 1 part of cement, 1.1 parts of quartz sand, 0.21 to 0.28 part of silica fume, 0.07 to 0.14 part of coal ash, 0.1 part of steel fibers, 0.1 part of small components, 0.2 part of water and 0.015 part of water reducer; and the active powder concrete doped with the coal ash is prepared by virtue of stirring, vibrating molding, mold stripping and high-temperature maintenance. The active powder concrete has the characteristics that the industrial waste slag powder is doped as an active component, and the novel active powder concrete is prepared by virtue of high-temperature maintenance, has the advantages of high strength, good mixability, low cost, environmental friendliness, simple preparation method and the like, is suitable for being popularized and used in real engineering, and conforms to the environment-friendly sustainable development strategy concept of China.

The invention relates to the technical field of construction formworks, and discloses a composite polyolefin skin for the surface of a construction formwork, and a preparation and use method of the composite polyolefin skin. The composite polyolefin skin is arranged to be in contact with the surface of the construction formwork, and is prepared from the following components in parts by weight: 80-90 parts of polyolefin, 15-25 parts of a controllable transfer assistant, 15-25 parts of filler, 5-15 parts of a flame retardant, 0.1-5 parts of an antioxidant, 0.1-5 parts of an anti-ultraviolet absorbent and 0.1-5 parts of a dispersant. The composite polyolefin skin adheres to the external surface of an existing construction formwork for use, demoulding performance is good, waterproof performance is good, and the composite polyolefin skin can be reused.

The invention discloses a method for resource utilization of industrial copper-containing wastewater. A sulfur-containing precipitant and additives are added to the copper-containing wastewater, and free copper ions are converted into solid precipitation for precipitation, and the wastewater containing solid precipitation or solid precipitation is used for The removal of mercury, in which the copper in the solid precipitation and the copper ions attached to the surface of the precipitation cooperate to activate and oxidize the mercury in the mercury-containing flue gas or mercury-containing wastewater, and because of the strong affinity between elemental sulfur and mercury Sulfur in solid precipitation can fix the activated and oxidized mercury into stable mercury sulfide, realize the removal of mercury, and effectively reduce the copper content in wastewater. This method realizes the effective removal of mercury in the flue gas, and at the same time solves the environmental problems caused by copper-containing wastewater, treats waste with waste, turns waste into treasure, is green and sustainable, has low cost of mercury removal, high efficiency, simple process, and is suitable for It provides a new way of thinking for the resource utilization of industrial copper-containing wastewater.

The invention discloses a pulverized coal forming and dry distillation method employing a waste as a binder. The method comprises the following steps: crushing and sieving coal to obtain pulverized coal; heating water to 80-100 DEG C, mixing and fully stirring heavy coal tar pitch, a tar residue and polyaluminum ferric chloride in sequence, fully stirring, pouring a mixture to dolomite powder when the mixture is softened, heating and stirring the dolomite powder into a sticky paste material to obtain the binder; carrying out cold press molding on the mixture obtained by compounding the prepared binder and the pulverized coal in a forming mould at a pressure of 8-20MPa to obtain briquette coal; carrying out low-temperature pyrolysis on the prepared briquette coal product in a dry distillation furnace at 500-750 DEG C for 2-4 hours to obtain semi-coke, coal tar and a coal gas. According to the method, a feasible way is provided for semi-coke production in short of raw lump coal, the problem that the tar residue of a factory cannot be effectively utilized is solved to the maximum extent; and the coal tar in the tar residue is completely squeezed, the oil yield rate of the briquette coal is improved and refuse reclamation is achieved, so that the utilization value of the pulverized coal is improved.

The invention proposes a steel slag-cyanide tailings cementitious material and its preparation method and application. The steel slag-cyanide tailings cementitious material is composed of the following substances in mass percentage: 30-60% of iron-selected waste slag, 10-20% of aerated concrete waste, 15-25% of calcium carbide slag, and 10-30% of desulfurized gypsum %. Carbide slag is calcined, cooled naturally, and ground; aerated concrete waste is crushed, dried, and ground; after desulfurization gypsum is ground, it is mixed with steel slag-cyanide tailings iron selection waste in proportion to prepare steel slag-cyanide tailings cementitious material. The cementitious material is mixed with portland cement to prepare steel slag-cyanide tailings cement. The preparation method of the invention is simple and easy to implement, can realize the coordinated utilization of various wastes, increase the added value of the wastes, reduce the production cost of cement, and has good social and economic effects.

The invention discloses an application of farnesol in preventing and treating the smut disease of sugarcane and corn. According to the application of farnesol in preventing and treating smut disease,the life history of sugarcane smut can be affected. Farnesol has better inhibiting effect on the germination of teliospore, the proliferation and growth of basidiospore and the sexual cooperation. Theformation of the binuclear mycelium can be effectively blocked, the sugarcane can not be normally infected with sugarcane smut, and the occurrence of the smut disease of the sugarcane can be effectively inhibited; the proliferation and growth of corn smut can be affected and the occurrence of corn smut can be inhibited.

The invention discloses an alkali-activated cementing material for 3D printing and a printing method of the alkali-activated cementing material. The alkali-activated cementing material consists of the following raw materials: industrial wastes, an alkali activating agent, fine aggregates, a defoaming agent, a water reduction agent, water, coarse aggregates, high-strength fiber and a micro nano material. A prepared slurry mixture is fed by two pumps and is printed and molded in a 3D printing mode. The problem that 3D printing concrete is low in early strength is solved, and the slurry properties of the alkali-activated cementing material are effectively improved; as the slurry is fed by two pumps, the problems that the alkali-activated cementing material is high in condensation rate and not applicable to 3D printing are solved; and due to doping of various fibers, final pressure and bending resistance of printed concrete is greatly improved.