40results about How to "Comply with circular economy requirements" patented technology

The invention discloses a composite mineral additive for high-strength and high-performance concrete and a method for preparing concrete. The composite mineral additive for the high-strength and high-performance concrete comprises superfine steel slag micro powder as a core material as well as hemihydrate desulfurization gypsum, II-level pulverized fuel ash and mineral slag. The preparation method of the composite mineral additive comprises the following steps of: placing raw materials in a mixer, and then mechanically stirring and uniformly mixing to form the composite mineral additive for the high-strength and high-performance concrete. The composite mineral additive for the high-strength and high-performance concrete, obtained in the method, has high early-stage strength in 3 days, the activity index is not less than 80%, and the activity index in 28 days is not less than S95%, which is higher than the standard of the issued state and local like products; and when used for preparing the concrete, the composite mineral additive can equivalently replace more than 60% of 52.5-level ordinary Portland cement, and meanwhile fragments generated by producing above 75% of broken stones can also be utilized for replacing natural sand, thereby low-carbon concrete having good durability and meeting the circulated economic requirement is produced.

The invention discloses a degradable foam packaging material and its preparation method. The packaging material comprises, by weight, 8-10 parts of degradable resin, 1-2 parts of a modifier, 2-3 parts of a foaming agent, 70-80 parts of vegetable fiber and 4-5 parts of inorganic powder. The preparation method comprises the following steps: 1, preparing raw materials according to the above formula; 2, drying the vegetable fiber; 3, carrying out ultrafine treatment on the vegetable fiber, and preparing a modified vegetable fiber composite base material; 4, carrying out low temperature high shearing on the modified vegetable fiber composite base material; 5, pre-foaming the modified vegetable fiber composite base material; 6, carrying out foaming extrusion on the modified vegetable fiber composite base material; and 7, cooling and fixing to obtain the degradable foam packaging material. The degradable foam packaging material has the advantages of high strength, good toughness, low density, economy, environmental protection and the like.

The invention relates to a device and a process method for forcedly aging a motor vehicle tail gas purifying and catalyzing material. The process comprises: loading the motor vehicle tail gas purifying and catalyzing material into an aging reaction tube and heating the material; introducing an aged gas into a bed layer of a reactor catalyzing material for aging treatment for 5 to 20 hours at a temperature of between 400 to 1,300 DEG C; and taking out the aged catalyzing material, and testing the material. The aging device mainly comprises a gas path, an aging tube reactor and a temperature control component. The device and the method are used for carrying out service life investigation and activity screening on the motor vehicle tail gas purifying and catalyzing material containing at least one class of oxide corresponding to elements like cerium, zirconium, aluminum, barium and the like. The device and the method have the advantages of real and reliable test result, simple operation process, small operation risk, good repeatability and easy realization of engineering scale-up. Highly toxic waste gas, waste liquid and waste residue are not discharged in the process of processing so the invention meets the circular economy requirements.

The invention discloses a method of preparing 2-deoxidation-D-glucose. It solves the problems of the complex manufacturing technique and high cost for existing 2-deoxidation-D-glucose. The method includes the following steps: preparing 1.2-deoxidation-2-phenylenemethylamino-D-glucose; preparing 2.2-deoxidation-2- phenylenemethylamino-3,4,5,6-four-O-acetyl-D-glucose; preparing 4.2-deoxidation -2-chorine-3,4,5,6-four-O-acetyl-D-glucose; preparing 5.2-deoxidation-3,4,5,6- four-O-acetyl-D-glucose; preparing 6.2-deoxidation-D-glucose. The raw material of the method is far ranging, and low cost. It has great economic, social, and environment benefit.

The invention discloses a preparation method of a degradable foam packing material. The preparation method comprises the following steps: 1) rubbing straw to prepare straw fibers; 2) adding 50-54 parts of straw fibers, appropriate amount of water, and 6-8 parts of a plant fiber modifier in a mixer for dispersing uniformly; 3) putting 42-46 parts of corn starch, 6-8 parts of silicon oxide powder, 12-14 parts of talcum powder and 6-8 parts of powdered aluminum into the mixer, heating to 60-70 DEG C, mixing uniformly to prepare a pasty material; 4) adding 200-210 parts of a 4-6% sodium hydroxide solution, and stirring at the same time; 5) coating the wall surface of a mold with 2-4 parts of an organic silicon releasing agent, filling the mold with the mixed slurry, continuously foaming and expanding for 16-18 minutes at the temperature of 125-135 DEGC; 6) drying at 100-110 DEG C to release the mold,so that the finished packing material is obtained.

The invention discloses a method for preparing a stainless steel production raw material--sintered ore--by using nickel slag. The method comprises the following steps: batching; mixing and granulation; material distribution; sintering; cooling; sieving; etc. Raw materials used in the step of batching are composed of, by weight, 20 parts to 45 parts of magnetite powder, 20 parts to 40 parts of hematite powder, 10 parts to 30 parts of nickel slag, 2 parts to 4 parts of limestone, 3 parts to 5 parts of lime, 2 parts to 4 parts of coke powder, and 3 parts to 4 parts of corn cob pieces. According to the method, the nickel slag is used as a raw material for preparing the stainless steel production raw material--sintered ore, so the utilization rate of the nickel slag can be improved; the nickelslag is fully utilized and turned from the waste into the valuable; environmental problems caused by stacking of the nickel slag are avoided; the cost of the sintered ore used as the stainless steel production raw material is lowered; and the reuse of the nickel slag meets the requirements of circular economy.

The invention discloses a preparation method of a double-faced compound warm-keeping and energy-saving wallboard. The method comprises the following steps of mixing and stirring 50-70% of bottom ash of household garbage after the household garbage is burnt to generate electricity, 5-20% of milling fine sand, 5-15% of lime and 5-20% of water by mass percentage, obtaining hard slurry, injecting the hard slurry into a panel mold, placing a corresponding wire mesh, conducting three rolling procedures, steaming by high pressure, cooling, demolding, obtaining a panel, fixing the prepared panel on the two sides of a mold, mixing and uniformly stirring 30-50% of the bottom ash of the household garbage after the household garbage is burnt to generate the electricity, 10-20% of the lime, 10-25% of the milling fine sand, 10-20% of cement, 2-4% of plaster, 0.01-0.06% of aluminum powder and 5-20% of the water by mass percentage, obtaining slurry, injecting the slurry into a wallboard mold, stewing, steaming by the high pressure, cooling, demolding, and obtaining the wallboard.

The invention relates to a device and a process method for forced aging of catalytic materials for vehicle tail gas purification. The process is to put a vehicle exhaust gas purification catalytic material into the aging reaction tube and heat it; the aged gas is passed into the bed of the catalytic material in the reactor and aged at 400-1300°C for 5-20 hours; the aging-treated catalytic material is completed Take out the test. The aging device mainly includes three parts: gas circuit, aging tube reactor, and temperature control components. The invention is used for life investigation and activity screening of a vehicle tail gas purification catalytic material containing at least a certain type of oxides corresponding to elements such as cerium, zirconium, aluminum, barium and the like. The test results are true and reliable, the operation process is simple, the operation risk is small, the repeatability is good, the project scale-up is easy to realize, and the treatment process has no highly toxic waste gas, waste liquid, and waste residue discharge, which meets the requirements of circular economy.

The invention provides an oxidation method of sulfite or acidic sulfite or a mixture thereof. The oxidation method comprises the following steps: introducing oxygen into an organic solution capable ofdissolving oxygen to oxidize an aqueous solution of sulfite or acidic sulfite or a mixture thereof, thereby preparing a sulfate product. The method is high in oxidation rate, can be applied to a comprehensive treatment technology of flue gas discharged in the coal industry, the petrochemical industry, the thermal power plant, the smelting industry and the like, and particularly relates to a post-treatment technology of flue gas desulfurization products and treatment of sulfite-containing wastewater generated in the industries of pesticides, printing and dyeing and the like. The method is lowin production equipment investment, energy-saving, time-saving, low in cost and convenient to operate, and can be applied to oxidation of sulfite aqueous solutions with different concentrations.

The invention discloses a deodorant based on resource utilization. The deodorant is screenings of glass anti-mildew insulation powder with the particle size ranging from 60 mu m to 120 mu m. The deodorant has a good deodorant effect, can remove odors at any time like a common deodorant, requires no extra resource consumption and meets the requirement of cyclic economy.

The invention discloses a plant fiber foaming packaging material. According to the packaging material, a density is 0.23-0.28g/cm<3> and a yield limit is within 850-1000N/cm<2>. The packaging material comprises the following components in parts by weight: 100 parts of plant fiber, 35-37 parts of corn starch, 2-4 parts of sodium carboxymethylcellulose, 1-2 parts of polyoxyethylene, 6-8 parts of wollastonite in powder, 12-14 parts of talcum powder, 6-8 parts of plant fiber modifier, 2-4 parts of organic silicon release agent and 1-2 parts of polyamide polyurea.