8results about How to "Promote green development" patented technology

This invention provides a coal and gangue separation method and system based on terahertz technology, belonging to the field of coal and gangue separation technology. The system includes a vibrating screen module, a material arrangement module, a material conveying module, a terahertz signal acquisition module, a terahertz imaging acquisition module, a computer processing module, and a separation control module. Raw coal, after pre-treatment by vibrating screen, is conveyed to the material conveying module. During conveying, the signal acquisition module and the imaging acquisition module acquire the terahertz time-domain spectral data and terahertz imaging data of the material, respectively. The computer processing module fuses the terahertz time-domain spectral data and imaging data to achieve the identification, real-time detection, and positioning of coal and gangue, and transmits the relevant information to the separation control module, which drives the corresponding slide plates to complete the coal and gangue separation process. This invention can safely, effectively, and comprehensively identify and separate coal and gangue, providing a feasible technical path in the field of coal and gangue separation technology.

The utility model relates to the technical field of breeding equipment, and disclose a kind of zero water change of sand class aquatic animal circulation water aquaculture equipment, including several breeding barrels, and the multifunctional barrel is equipped in breeding barrel side, and ceramic filter layer is placed in the bottom of breeding barrel inner wall, and sand filter screen is fixed in the top of ceramic filter layer in breeding barrel inner wall, and breeding sand layer is equipped in the upper portion of sand filter screen, the device is integrated bottom water flow plowing, microfiltration separation and low oxygen denitrification triple technology by breeding barrel and multifunctional barrel, microfiltration machine is realized water efficient solid-liquid separation by screen dynamic interception mechanism, to remove larger impurities in aquaculture wastewater in physical interception mode, sponge barrel top connecting cover plate creates low oxygen environment, and internal filling biochemical sponge, after the water treated by microfiltration machine, further denitrification reaction occurs, reach the water quality purifying effect, and oxygen and water are efficiently mixed by gas-liquid rotation mixing and gradient dissolution mechanism of dissolving oxygen device, so that oxygen-rich water enters breeding barrel.

The invention discloses a multi-dimensional dynamic new energy equipment carbon footprint accounting method and system. The method comprises the following steps: dividing the whole life cycle of new energy equipment into a plurality of top stages; performing subdivision analysis processing of at least one dimension on each top stage according to the technical characteristics of the new energy equipment to generate a plurality of sub-stages; collecting and preprocessing activity data of each sub-stage; constructing and calling a dynamic emission factor library, and matching the activity data with dynamic emission factors in the dynamic emission factor library; and based on the activity data and the corresponding dynamic emission factors matched with the activity data, calculating the carbon footprint of each sub-stage, and carrying out aggregation from bottom to top to obtain the total carbon footprint of the new energy equipment in the whole life cycle. According to the scheme, traditional carbon footprint accounting is deeply refined, so that carbon footprint calculation does not stay in a macroscopic level any more and can go deep into a specific sub-stage, and the accounting fineness and accuracy are remarkably improved.

The application discloses a Cr3C2-BN nickel-based ultra-high-speed laser cladding composite coating and a preparation method thereof. In the cladding raw material powder, the mass percentage of the nickel-based powder is 65-75%, the mass percentage of the Cr3C2 powder is 20-30%, and the mass percentage of the h-BN powder is 2-10%. The main steps for preparing the coating are as follows: the three kinds of powders are uniformly mixed and then are put into a laser cladding device; and the laser cladding machine is started to perform laser cladding on a 40Cr rod material rotating appropriately with Ar gas as a protective gas. In the obtained coating, the hard phase particles are mainly Cr3C2 particles; the addition of BN promotes the melting of the Cr3C2 powder, enhances the uniformity of the coating, improves the forming quality of the coating, and generates dendritic networks around the Cr3C2 particles to optimize the mechanical structure of the coating. The coating prepared by the method has good surface morphology and excellent wear resistance and corrosion resistance; the application has simple process, excellent performance of the obtained product and is convenient for industrial application.

The invention discloses a synthesis method of an antioxidant GM, which comprises the following steps: (1) under the protection of nitrogen, mixing 2-tert-butyl-4-methylphenol and a functionalized acidic ionic liquid, stirring and heating, dropwise adding acrylic anhydride, carrying out heat preservation reaction after dropwise adding, filtering, separating and washing to obtain 2-acrylic acid-2-tert-butyl-4-methylphenyl ester; and (2) under the protection of nitrogen, mixing 2-acrylic acid-2-tert-butyl-4-methyl phenyl ester, dimethoxymethane, 2-tert-butyl-4-methylphenol, the functionalized acidic ionic liquid, the supported phosphotungstic heteropoly acid and methanol, stirring, heating, carrying out reflux reaction, filtering, separating, washing, carrying out reduced pressure distillation, filtering, separating and washing while the mixture is hot, thereby obtaining the antioxidant GM. The functional acidic ionic liquid and the supported phosphotungstic heteropoly acid are adopted, so that the target antioxidant GM with higher purity and yield can be obtained, and better green and environment-friendly development is realized.

This invention discloses an optimization method for a natural gas pressure energy system based on a multi-objective frost algorithm, relating to the field of energy utilization technology. The specific steps are as follows: A comprehensive optimization model is established for the natural gas pressure energy system from three aspects: system efficiency, economic benefits, and environmental benefits. Then, algorithm parameters are initialized and the population is uniformly initialized. Next, a neighborhood structure is constructed by calculating Euclidean distance, and the fitness of each individual is calculated using a weighted sum decomposition method. The quality of local solutions is optimized by combining a frost neighborhood perturbation mechanism. In the stage of generating new individuals, simulated binary crossover and polynomial mutation operators are used, and a hard frost puncture mechanism is introduced to avoid local optima. Subsequently, the population and solution set are updated, retaining non-dominated solutions and maintaining the convergence and diversity of the solution set. Finally, the optimal result is selected by comprehensively evaluating the optimized solution set using the analytic hierarchy process (AHP)-fuzzy decision method. This invention can optimize and improve the performance of a natural gas pressure energy system.

The invention belongs to the technical field of animal molecular breeding, and particularly relates to application of an SNP molecular marker influencing the feed conversion rate of large white pigs, the SNP molecular marker is at least one of the following: a nucleotide sequence shown as SEQ ID NO.1, nucleotide at the 101bp site is C or T; in the nucleotide sequence as shown in SEQ ID NO.3, the nucleotide at the 101bp site is G or A; the application refers to any one of the following steps: identifying the feed conversion rate of the large white pigs; the feed utilization rate of large white pig offspring is improved. Two brand-new SNP molecular markers are identified on a large white pig for the first time and are remarkably related to the feed conversion rate. Based on the marker, early and accurate feed efficiency identification and breeding can be performed on large white pigs, and by screening individuals carrying excellent genotypes as parents, offspring with lower feed conversion rate can be effectively bred.

The low-shrinkage low-heat mass concrete is prepared from the following raw materials in parts by weight: 200 to 300 parts of cement, 5 to 10 parts of modified carbide slag, 100 to 180 parts of modified lithium slag powder, 600 to 900 parts of machine-made sand, 950 to 1100 parts of gravel, 140 to 170 parts of water and 6 to 11 parts of a water reducing agent, the specific surface area of the modified carbide slag is 400-600m < 2 > / kg, and the specific surface area of the modified lithium slag powder is 300-500m < 2 > / kg. Under the synergistic effect of doping a large amount of modified lithium slag powder and a small amount of modified carbide slag, the performance requirements of shrinkage-compensating concrete used for structures such as beams and slabs can still be met without using a concrete expanding agent; compared with a method for reducing the temperature rise in the concrete hydration process by using an admixture with a large mixing amount, such as coal ash mixing, the method has the advantages that the adiabatic temperature rise of the concrete is obviously reduced, favorable conditions are provided for controlling the temperature crack of the mass concrete, and the 28-day compressive strength is improved.