158results about How to "Strong oxidizing" patented technology

The invention relates to a method for removing a trace of thallium in sewage. The method includes the process steps of regulating the PH value of the thallium-contained sewage to 4, adding a ferrous sulfate solution to the sewage, evenly mixing the sewage with the ferrous sulfate solution, adding hydrogen peroxide to the sewage again, conducting stirring, oxidizing fluorosis univalence thallium (T1+) in the sewage into tervalence thallium (T13+), mixing ferrous iron and hydrogen peroxide into a fenton reagent, adding lime to the sewage and evenly conducting stirring so that the PH value of the sewage can be neutralized to be 7 to 9, hydrolyzing tervalence iron (Fe3+) in the sewage at the same time to form flocculent ferric hydroxide, adding an appropriate amount of power plant stove ash (electric duct collector stove ash) to the sewage, evenly conducting stirring, and adding a polyaluminium sulfate solution so that ferric hydroxide and thallium hydroxide can be adsorbed to the stove ash. Flocculent sediment generated through hydrolysis has the great surface area and quite strong adsorption capacity; the power plant stove ash can adsorb the flocculent sediment and colloid particles in the sewage and sink.

The invention discloses a manufacturing method of a high-strength oxidable aluminum alloy plate strip. The manufacturing method of the high-strength oxidable aluminum alloy plate strip comprises the following steps that (1) molten aluminum alloy is prepared, specifically, chemical elements are determined, and the aluminum alloy comprises, by mass, 0.6%-0.9% of Si, 0.1%-1.4% of Fe, 0.6%-0.9% of Cu, 0.2%-0.3% of Mn, 0.9%-1.1% of Mg, 0-0.05% of Cr, 0-0.05% of Zn, 0-0.05% of Ti, 0-0.05% of single impurities, 0-0.15% of blended impurities, and the balance Al; (2) casting is conducted; (3) hot rolling is conducted; (4) intermediate annealing is conducted; (5) cold rolling and finish rolling are conducted; and (6) continuous pull-correcting or predrawing is conducted. The aluminum alloy plate strip manufactured through the method has high strength, the tensile strength T.S(delta b / MPa) is equal to or higher than 350 MPa, the yield strength Y.S(delta 0.2 / MPa) is equal to or higher than 320 MPa, the extensibility (theta / %) is equal to or higher than 8%, and the surface hardness HV is equal to or higher than 120. The type of the aluminum alloy plate strip manufactured through the method is TY62-T651, the aluminum alloy plate strip is high in supporting strength and surface strength and oxidable when used for a side key of a mobile phone support, continuous punching can be achieved, and the production efficiency is high.

The invention discloses the technical field of tail gas catalyst, and particularly relates to an acidity-controllable core-shell type platinum based catalyst for tail gas catalytic DOC (diesel oxidation catalyst) of a diesel vehicle and a preparation method thereof. The acidity-controllable core-shell type platinum based catalyst has the advantages that the nanometer platinum particles are used as an inner core, and the acid composite oxides, such as SiO2 (silicon dioxide)-Al2O3 (aluminum oxide), SiO2-TiO2 (titanium dioxide) and SiO2-ZrO2 (zirconium dioxide), are used as shells; under the existence of the catalyst, the diesel vehicle tail gas atmosphere is simulated, the temperature (T50) for converting 50% of propane (HC) is reduced to be lower than 250 DEG C, and more than 85% of NO is oxidized into NO2 (nitrogen dioxide) at the temperature below 200 DEG C; even after long-time high-temperature hydrothermal aging treatment at temperature of 800 DEG C, the original structure of the material can be still maintained, the excellent oxidizing activity is realized, and the use requirements of the DOC of the advanced diesel vehicle are met.

The invention discloses an oxide ceramic filter material and a preparation method. The oxide ceramic filter material comprises the following compositions by weight portion: 10 to 60 portions of CaO, 1 to 60 portions of MgO, 10 to 40 portions of SiO2, 5 to 20 portions of Al2O3, 0 to 15 portions of TiO2, 0 to 25 portions of ZnO and 0.1 to 1 portion of Fe2O3. The basic principle of the filter material is to complete the function of high-efficiency filtration by the function that adsorbed antibacterial materials subjected to physical filtration release active oxygen when reacting with water. The oxide ceramic filter material mainly aims to solve the problem of water quality deterioration caused by various pollutants in water bodies, and simultaneously has strong sterilization and algae removal properties.

The invention provides an additive for flue gas desulfurization and denitration, which comprises a calcium-based sorbent and a tetravalent cerium compound. The invention also provides a flue gas desulfurization and denitration method. According to the invention, the tetravalent cerium compound is taken as an oxidant, and after the tetravalent cerium compound is mixed with the calcium-based sorbent, the obtained mixture is applied to a flue gas desulfurization and denitration dry process, and then the tetravalent cerium compound and the calcium-based sorbent play roles together in simultaneously removing sulfur dioxide and nitric oxide in flue gas, so that the additive has high simultaneous desulfurization and denitration efficiency and good security and stability. Experimental results show that when the additive comprises 2.3 wt % of the tetravalent cerium compound and 97.7 wt % of calcium hydroxide, the reaction temperature is 50-60 DEG C, and water accounts for 8 wt % of the total mass of the water, flue gas and the additive, the average efficiencies of desulfurization and denitration can respectively reach 98.7% and 61.5%.

A metal oxide-loaded molecular sieve catalyst comprises pure cryptomelane type manganese dioxide and transition metal. A method for preparing the molecular sieve catalyst comprises the following steps: 1, preparing solution of potassium permanganate; 2, preparing solution of manganese acetate; 3, adding the solution obtained by the step one into a three-neck flask, and heating, condensing and refluxing the solution; 4, adding the solution obtained by the step two into the three-neck flask of the step three, condensing and refluxing the solution, filtering and drying the obtained black pasty sediment, and roasting the sediment to obtain an octahedral manganese oxide molecular sieve catalyst (OMS-2) solid; 5, adding cerium ammonium nitrate, cobalt nitrate hexahydrate, copper nitrate trihydrate, ferric nitrate nonahydrate or yttrium nitrate into deionized water to form solution; and 6, mixing the solid taken from the step four and the solution in the step five, soaking cerium on the octahedral manganese oxide molecular sieve catalyst (OMS-2) solid, and drying and roasting the obtained solid to obtain the metal oxide-loaded molecular sieve catalyst. The metal oxide-loaded molecular sieve catalyst has the characteristics of high purification efficiency, low price and good thermal stability.

A processing method of modified soybean fibers is disclosed. The method is characterized in that the method includes (1) a step of surface etching, namely a step of adding soybean fibers into a plasmamachine and performing surface treatment; (2) a soaking step, namely a step of soaking the etched soybean fibers into an activating agent solution, performing activation, and then soaking the soybeanfibers in an antibacterial solution; (3) a step of ionization treatment, namely a step of soaking the soaked soybean fibers into a treating agent, performing ionization treatment, adding a sodium silicate solution into an ionization tank, and performing a second time of ionization; (4) a step of high-pressure temperature changing, namely a step of drying the ionized soybean fibers until the watercontent is 7-9%, then putting the soybean fibers into a temperature changing oven, and performing temperature changing treatment; and (5) a step of oxidation, namely a step of oxidizing the temperature-changed soybean fibers in a vacuum tank.

The invention relates to a CrXCo3-XO4 spinel type catalyst for purifying tail gas of gas-fueled vehicles. An A site of a spinel AB2O4 structure comprises positive divalent cobalt elements, and a B site comprises chromium elements or chromium elements and positive divalent cobalt elements, wherein the molar ratio of the positive divalent cobalt elements to the sum of positive trivalent cobalt elements and the chromium elements to oxygen elements is 1:2:4. The preparation method of the CrXCo3-XO4 spinel type catalyst comprises the steps of: (1) respectively preparing a chromic nitrate solution and a cobalt nitrate solution with deionized water; (2) according to the proportion of the cobalt elements and the chromium elements, weighing the chromic nitrate solution and the cobalt nitrate solution which are prepared in the step (1), and uniformly mixing the two solutions by magnetic stirring; (3) adding an ammonia solution to regulate the pH value to obtain a suspension; and (4) carrying out vacuum filtration on the suspension obtained in the step (3), putting filter cakes in a drying box for drying, and then, transferring the filter cakes into a muffle furnace for roasting. The CrXCo3-XO4 spinel type catalyst has the characteristics of good heat stability, simple structure, low cost and wide application prospects.