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502results about How to "Meet development requirements" patented technology

Method for recycling heavy metal pollution wastes

The invention discloses a method for recycling heavy metal pollution wastes, which comprises the following steps of: 1) the pulping of raw materials; 2) acid leaching, namely, adding pulp obtained in the step 1 into a dilute sulphuric acid for filtration, and taking filter residues as the raw materials of bricks or cement; 3) copper displacement, namely, displacing copper out of filtrate in the step 2 with iron; 4) the preparation of ferrum-chrome-alum, namely, adding alkaline substances and an oxidant into the filtrate obtained in the step 3, adjusting a PH value, and precipitating and filter-pressing the mixed solution to obtain the ferrum-chrome-alum; and 5) the preparation of sponge cadmium, namely, displacing cadmium out of the filtrate obtained in the step 4 with zinc. The process has the advantages of suitability for the treatment of waste residues and waste liquor in a plurality of industries of electroplating, surface treatment, heavy metal smelting, chemical engineering and the like, no need of heating liquid-phase materials, the realization of closed cycle, and the capacity of extracting a plurality of valuable metals, such as Cu, Cr, Cd, Ni, Co, Zn and the like, directly taking the wastes obtained after the metal separation as the raw materials of the bricks or cement, and saving coal and electricity amounting to 20,000 T standard coal and 40,000-ton water per year for enterprises recycling 5,000-ton metals per year.
Owner:青川县天运金属开发有限公司

Power system multi-zone distributed state estimation method based on synchronous phase angle measurement device

The invention discloses a power system multi-zone distributed state estimation method based on a synchronous phase angle measurement device, which quickly estimates voltage amplitude values and phase angle values of all nodes of a power grid in real time by utilizing measurement data from a SCADA (supervisory control and data acquisition) system and a PMU (phasor measurement unit), and performs real-time interaction on state information of all zones. According to the method, a geographical characteristic-based non-overlapping decoupling strategy is adopted to decouple a large power system into subsystems, and states of all the subsystems are integrated by a coordination system; and with adoption of the multi-zone distributed state estimation method, estimation of states of the large system turns into estimation of states of a series of partial small zones, so that the computation speed is greatly improved. Real-time accurate measurement information of voltage, phase angle and the like can be offered to the system, and the system is enabled to obtain higher measurement redundancy, so that the accuracy of state estimation can be improved. According to the method, zone interaction management facilitates secure and effective access of new energy, so the development requirement of a future intelligent power grid can be met.
Owner:SOUTHWEST JIAOTONG UNIV

Elastic waterproof polyurea coating as well as preparation method and application method thereof

The invention belongs to the technical field of coating production and particularly relates to an elastic waterproof polyurea coating as well as a preparation method and application method thereof. The coating comprises a component A and a component B, wherein the component A comprises the main ingredients of aliphatic polyisocyanate trimer and an elastic isocyanate curing agent; the component B comprises the main ingredient of dimerization type asparaginic acid ester polyurea resin; the component A and the component B are packaged independently; a base coat layer is uniformly coated with the component A and the component B. The polyurea coating provided by the invention has the advantages as follows: the construction time of the polyurea coating is prolonged, the wettability is improved, and the performance of thick coating construction is provided, so that special polyurea coating equipment and special constructors are not required, the construction is facilitated, and the formed film has excellent elasticity. The polyurea coating can be dried after being coated for two hours, is high in curing speed, can be used outdoors, has excellent water resistance and chemical corrosion resistance of a swimming pool disinfectant, and can be soaked in water for a long time without cracking and leakage.
Owner:深圳市威尔地坪材料有限公司

Preparation method of epoxidized natural rubber masterbatch with highly dispersed nano-silicon dioxide/carbon black

The invention discloses a preparation method of an epoxidized natural rubber masterbatch with highly dispersed nano-silicon dioxide/carbon black, which comprises the following steps: performing ultrasonic dispersion on nano-silicon dioxide modified by a silane coupling agent and carbon block after liquid phase oxidation by an oxidant by using deionized water, then adding the nano-silicon dioxide into epoxidized natural rubber latex, stirring, finally performing steam solidification or solidification by a solidifying agent, drying, and getting the epoxidized natural rubber masterbatch with the highly dispersed nano-silicon dioxide/carbon black. Compared with the mechanical properties of the masterbatch prepared by adding the same parts of the nano-silicon dioxide/carbon black powder, the mechanical properties of the masterbatch are as follows: the 100% modulus is improved from 2.3MPa to 3.1-3.4MPa, the 300% modulus is improved from 9.2MPa to 10.1-11.6MPa, the tensile strength is improved from 31.2MPa to 33.5-36.8 MPa, the elongation at break is improved from 625% to 647%-688%, and the tearing strength is improved from 48.3N/mm to 53.8-58.3N/mm; furthermore, the process is simple, and the large-scale production is easy.
Owner:AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI

Cylindrical Halbach magnet shimming coils

The invention provides a target field method for design shimming coils for cylindrical Halbach magnet (commonly known as a magic ring magnet). All orders of shimming rings which are designed according to the invention are respectively fixed on all coaxial cylindrical surfaces on the inner side of the permanent magnet. Closed loops as shown in Drawings 3 to 10 are cut into 'open loops' at appropriate positions, and the close open loops are sequentially and serially connected and an order of shimming coil is formed. Every order of shimming coil is electrified and generate precise corresponding order of harmonic magnetic field in an interested area in the center of the magnet. When in design, the value of a stream function meets the condition that the magnetic fields of the coils do not exceed a target harmonic field for a certain threshold, the power consumption functions of the coils are minimum, and the projection of the isolines of the stream function realizes the distribution of leads. After being fed with appropriate reversing current, all orders of harmonic shimming coils designed according to the invention can precisely offset harmful harmonic components in the magnetic fields, so that the purpose of shimming horizontal magnetic fields Bx of the magic ring permanent magnet is achieved, and simultaneously, the cylindrical Halbach magnet shimming coils have the characteristics that the power consumption of the coils is low and the shimming efficiency is high.
Owner:PEKING UNIV

Construction site remote real-time monitoring system

The invention relates to a construction site remote real-time monitoring system. The system comprises the following main technical characteristics that: the system is composed of a monitoring management center, a sub-control center, a network transmission device and a front-end monitoring device; wherein the monitoring management center comprises a network storage server, a video matrix host, a streaming media forwarding server, a network monitoring server, a monitoring client side, a monitoring host, a gigabit core switch and a television wall; the sub-control center comprises a digital hard disk video recording host, a management server, a three-in-one lightning protection device and an individual line network bridge; and the front-end monitoring device comprises a video camera, an audio monitoring device, an inductive alarm and an alarming button. Based on the characteristics, such as temporality, huge quantity and the like, of the construction sites, the network transmission mode is used in the system, and the system is also integrated with the advanced computer network and communication technology to realize the remote real-time monitoring of a construction engineering bureau master control center and a construction site monitoring management center on the construction sites, so that thefts, accidents and the like are effectively reduced.
Owner:TIANJIN GREATWALL KEAN ELECTRONICS TECH

Supercritical carbon dioxide hairball dyeing kettle and waterless dyeing method thereof

The invention relates to a supercritical carbon dioxide hairball dyeing kettle which comprises a cylinder body and a hairball dyeing barrel body fixed in the cylinder body, wherein a movable sealing cover is fixed at the upper end of the cylinder body, and the lower end of the cylinder body is provided with a carbon dioxide liquid outlet; a carbon dioxide liquid inlet is arranged at the upper part of the cylinder body; a heating clamping sleeve is fixed outside the cylinder body; a heating medium outlet is arranged at the upper end of one side of the heating clamping sleeve, and a heating medium inlet is arranged at the lower end of the other side of the heating clamping sleeve; the supercritical carbon dioxide hairball dyeing kettle is characterized in that a hole III is formed in the wall of the hairball dyeing barrel body; a central pipe is fixed to the centre of the hairball dyeing barrel body, and at least one upper limiting cover is fixed to the central pipe; the central pipe has a multi-pore shaft structure; a hole I is formed in a supporting plate at the bottom of the barrel body; a central hole Ia is corresponding to an internal chamber of the central pipe; and a hole II is formed in the upper limiting cover. According to the supercritical carbon dioxide hairball dyeing kettle increased, the direct contacting surface area of the a hairball and the dyeing liquid can be increased, and improves the influence due to the gravity in hairball dyeing can be improved, and the dyeing speed and the dye pickup can be improved, as well as the dyeing uniformity is improved.
Owner:晋江国盛新材料科技有限公司

Q420GJD-Z35 steel plate with thickness of less than or equal to 60 millimeters for high-rise building and production method thereof

The invention discloses a Q420GJD-Z35 steel plate with thickness of less than or equal to 60 millimeters for a high-rise building and a production method thereof. The steel plate comprises the following chemical components in percentage by mass: 0.10 to 0.17 percent of C, 0.20 to 0.50 percent of Si, 1.20 to 1.60 percent of Mn, less than or equal to 0.015 percent of P, less than or equal to 0.005 percent of S, less than or equal to 0.10 percent of microalloyed elements (Nb+V+Ti), less than or equal to 0.050 percent of Als and the balance of Fe and residual elements. The production method comprises the steps of performing converter smelting, ladle furnace (LF) refining, vacuum refining, continuous casting, heating, rolling, cooling control, slow cooling and heat treatment. Optimized components and a rolling process are controlled strictly, so that the material quality of the product reaches the Q420GJD-Z35 level, the yield strength is controlled to be between 400 and 480 MPa, the tensile strength is controlled to be between 540 and 630 MPa, the yield ratio is less than or equal to 0.80, the elongation ratio is controlled to be between 22 and 27 percent, V-type impact power at -20 DEG C is controlled to be between 153 and 280 J, the Z-direction performance is distributed between 32 and 57, the average value of three Z-direction performance of a single sample is over 40 percent, and the performance index completely meets the Q420GJD-Z35 development requirement.
Owner:NANYANG HANYE SPECIAL STEEL CO LTD

Method for treating wastewater from livestock and poultry breeding by constructing vertical flow artificial wetland based on water supply plant sludge

The invention discloses a method for treating wastewater from livestock and poultry breeding based on a vertical flow artificial wetland with water supply plant sludge as fillers, belonging to the technical field of wastewater treatment. The method is characterized in that water supply plant sludge is dried and crushed as fillers to construct a vertical flow artificial wetland for treating high-concentration wastewater from livestock and poultry breeding, wastewater from livestock and poultry breeding is allowed to enter the artificial wetland by stages and discharged out from the system for a certain hydraulic retention time under the condition of intermittent aeration. The pollutants such as organic substances, nitrogen and phosphorus in wastewater can be effectively removed by the treatment method disclosed by the invention and the total removal rates of ammonia nitrogen and total phosphorus are higher than 90%. According to the method disclosed by the invention, the problem of a way out for water supply plant sludge is also solved while wastewater from livestock and poultry breeding is effectively treated, and thus the method is conducive to achieving a purpose of "treatment of wastes with processes of wastes" and is in line with the concept of circular economy and sustainable development.
Owner:BEIJING NORMAL UNIVERSITY

Bacteria-algae synergism low-carbon membrane bio-reaction system

The invention belongs to the technical field of environmental protection, and more particularly relates to a bacteria-algae synergism membrane biological photosynthetic reaction system, aiming at realizing low-carbon emission. The system comprises a pond body, a water inlet pipe, filler, illumination devices, an aerating apparatus, a membrane module, a water outlet pipe and a suction pump, and ischaracterized in that the pond body is internally provided with the filler; the illumination devices are evenly distributed at the two sides of the filler; the aerating apparatus is positioned at thebottom of the pond body; the membrane module is arranged inside the pond body and is close to the water outlet pipe; the water outlet pipe is connected with the suction pump; and the water inlet pipeis positioned at one side of the pond body, and the water outlet pipe is arranged at the other side of the pond body. By utilizing the physical and chemical properties of bacteria and algae, and carrying out synergistic effect according to metabolic coupling of substrate and product, the bacteria-algae synergism membrane biological photosynthetic reaction system can reach system metabolic flux balance, thus reducing the aeration consumption of a sewage disposal system and the emission of greenhouse gases such as carbon dioxide and the like. Meanwhile, by utilizing the technology of membrane separation, the system realizes separation between bacteria, algae and water, and ensures the quality of outlet water to be stable.
Owner:TONGJI UNIV

Remote sensing image fusion method based on convolution enhancement and HCS transform

The invention discloses a remote sensing image fusion method based on convolution enhancement and HCS transform. A multi-spectrum image with low spatial resolution and a panchromatic image with high spatial resolution are registered, the multi-spectrum image with low spatial resolution is re-sampled to have the same pixel size as the panchromatic image with high spatial resolution, and cutting is performed to obtain a multi-spectrum image and a panchromatic image with the same sheet range waiting for fusion; HCS transform is performed on the multi-spectrum image with low spatial resolution to obtain a strength component and a plurality of angle components; a spatial filtering operator is adopted to perform convolution filtering on the panchromatic image with high spatial resolution to obtain space details; the space details are compensated into the strength component in weight to obtain an enhanced strength component; and the enhanced strength component is decomposed by the obtained angle components to obtain a final fusion image. According to the method, HCS transform and the convolution filtering algorithm are applied to fusion of the multi-spectrum image and the panchromatic image, and the space details of the fusion result are greatly enhanced.
Owner:SUN YAT SEN UNIV
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