64results about How to "Microporous increase" patented technology

The invention relates to a method for preparing cold-bonded pellets from sludge containing iron by an compound adhesive, belonging to the technical field of adhesives for metallurgical ironmaking. The method of the invention comprises the following concrete steps: adopting the compound adhesive of an inorganic adhesive and an organic adhesive, wherein the organic adhesive in the compound adhesive comprises the following raw materials: vinyl acetate, acroleic acid, sodium cellulose glycolate, polyvinyl alcohol, polyisobutylene, molasses and coal tar; and the inorganic adhesive comprises the following raw materials: bentonite, calcium oxide, basic sodium silicate, sodium chloride, talcum powder and light calcium carbonate. When the organic adhesive and the inorganic adhesive in the adhesive are prepared, the components are proportioned and controlled strictly in a proper order, so that the defects of one adhesive singly used can be avoided, and the compound adhesive has good caking property on the iron containing sludge. The method of the invention recycles iron from iron containing sludge and changes waste into resources, thereby reducing pollution of storage and transport on the environment, and saving the energy consumption in the sintering and high furnace production.

The invention provides a preparation method and application of an activated carbon fiber-based adsorbent for removing hydrogen sulfide, hydrogen phosphide, arsenic hydride and ammonia gas, and belongsto the technical field of air pollution prevention and control. The method comprises the following steps: firstly, carrying out remote argon plasma treatment on the activated carbon fiber, and then carrying out ultrasonic impregnation by using a hydrogen peroxide solution, so that the number of oxygen-containing functional groups such as phenolic hydroxyl, lactone and carboxyl on the surface of the activated carbon fiber is remarkably increased; modified activated carbon fibers and a copper nitrate solution are mixed and subjected to rotary evaporation, copper salt is loaded on the surfaces of the activated carbon fibers, the copper salt is converted into copper oxide after being roasted in a microwave muffle furnace, the copper oxide can serve as an active component for removing hydrogensulfide, hydrogen phosphide, arsenic hydride and ammonia gas, and therefore the removal efficiency of harmful gas is improved; the roasted activated carbon fiber is subjected to remote oxygen plasmatreatment, so that oxygen-containing functional groups on the surface of the activated carbon fiber can be enhanced, the anti-pollution performance of the activated carbon fiber-based adsorbent is improved, and the service life of the activated carbon fiber-based adsorbent is prolonged.

The invention belongs to the technical field of fuel preparation, and particularly relates to straw fuel containing biomass sludge and a preparation method of the straw fuel. The straw fuel containing the biomass sludge is prepared from the biomass sludge containing straw, a mixture of membrane treatment supernate and straw, lignin and cellulose mud. According to the straw fuel, organic waste obtained through biomass resource treatment is fully utilized, and great economic benefits and environmental friendliness benefits are achieved. In addition, straw particles and other plant materials are added into sludge which is not dewatered, and the thermal value of the dewatered sludge can be increased; due to the fact that the straw particles and other plant fibers are mixed in the sludge, the friction force of the pre-dewatered sludge in a spiral squeezing dehydrator is increased, then the operation frequency of the spiral squeezing dehydrator can be improved, and the operation efficiency and output sludge dryness of the machine are effectively improved.

The invention discloses a preparation method of a high-adsorption-performance biochar fertilizer. The preparation method comprises: (1) respectively drying a biomass raw material and human-livestock manure or baking a biomass raw material and human-livestock manure, and crushing into powder so as to be spare; (2) weighing and mixing the treated biomass raw material, the treated human-livestock manure and a catalyst according to a mass ratio of 3:2:1; (3) carrying out immersion treatment; (4) carrying out dehydration-oxygen discharging; and (5) carrying out cracking carbonization. According to the present invention, the method is simple; the prepared biochar fertilizer has strong heavy metal ion adsorption capacity and high fertilizer efficiency; and after the high-adsorption-performance biochar fertilizer is applied in the soil, the soil structure can be improved, and the high-adsorption-performance biochar fertilizer can act as the fertilizer so as to well meet the growth needs of crops.

The invention discloses an anti-corrosion silicon carbide wear-resistant material and a preparation method thereof. The anti-corrosion silicon carbide wear-resistant material is prepared from the following raw materials by weight: 25-30 parts of silicon carbide, 12-15 parts of a reinforcing agent, 3-5.5 parts of zinc oxide, 12-15 parts of phenolic resin, 8-10 parts of nano-graphite, 3-5 parts of aluminum oxide, 6-8 parts of a dispersing agent and 40-50 parts of deionized water. The reinforcing agent is prepared in the preparation process, the reinforcing agent contains modified nano activated carbon, the surface of the reinforcing agent contains a large number of copper ions, the copper ions easily form copper oxide with oxygen, meanwhile, the reinforcing agent contains an intermediate F, the intermediate F belongs to aromatic polyamide, the intermediate F contains an alkyl long-chain structure and two nitryl groups, nitryl is a hydrophobic group, so that the water solubility of the intermediate F is greatly reduced, the anti-corrosion silicon carbide wear-resistant material does not have the phenomenon of wear-resistant substance loss after being soaked in water, and the wear resistance and corrosion resistance of the anti-corrosion silicon carbide wear-resistant material are further ensured.

The present invention belongs to the technical field of environmental materials, and discloses a modified slag adsorbent for anion dye wastewater treatment, and a preparation method thereof. The preparation method comprises: washing, drying, crushing and screening slag; preparing a sodium chloride solution, and mixing the sodium chloride solution and hydrochloric acid to obtain a mixed solution; and slowly adding the mixed solution to the slag, carrying out a stirring reaction, standing, drying, and grinding to obtain the modified slag adsorbent. According to the present invention, the preparation method has characteristics of simpleness, rich raw material source, low price, and waste recycling; after the modification, the micro-pores of the slag are increased, the specific surface area is increased, and the adsorption capacity of the adsorbent is further enhanced; and the adsorbent of the present invention has the good anion dye wastewater treatment effect, has the high equilibrium adsorption capacity, and especially has the good Acid Green 27 adsorption effect.

The invention relates to a high-performance sound-absorption and thermal-insulation material production line which comprises a main frame, wherein a plastic extruding machine is arranged above the main frame; a round roller net forming machine is arranged in the main frame; a melt-blow spinning box, a dosing pump and a filter are connected together and arranged above the round roller net forming machine; the melt-blow spinning box is connected with a plastic extruding machine; a wind heater is arranged on a side part of the round roller net forming machine; an induced draft fan and a blower are arranged on a side part of the wind heater; the wind heater is communicated with the centrifugal induced draft fan and the blower through pipelines; a dot hot-rolling roller and a dividing and cutting machine are arranged on a side part of the main frame; a spinneret and a spinning micropore are arranged below the melt-blow spinning box; and the micropore diameter ranges from 0.3 mm to 0.4 mm. In the invention, through the technical improvement on key process equipment, such as melt-blow, filling, sewing and the like, the high-performance sound-absorption and thermal-insulation material production line is built, and the procedures of product melt-blow, filling and sewing are accomplished in the same production line.

The invention discloses a method for reducing the emission of nitrous oxide in the soil of a camellia oleifera forest by utilizing bamboo reed biochar, belonging to the field of emission reduction ofgreenhouse gas. The method comprises the following specific steps: step 1, preparation of a raw material: harvesting mature bamboo reeds, cutting the stems of the mature bamboo reeds into bamboo reedpieces with lengths in a range of 1-3 cm, drying the bamboo reed pieces in the air for 1 day, and drying the bamboo reed pieces in a drying oven for a plurality of hours; step 2, carbonization of thebamboo reed pieces: transferring the bamboo reed pieces into a muffle furnace, carrying out heating to a carbonizing temperature in an inert gas atmosphere, keeping the carbonized bamboo reed pieces at a constant temperature for a plurality of hours, and performing natural cooling to room temperature to obtain the bamboo reed biochar; step 3, treatment of the bamboo reed biochar: grinding and sieving the bamboo reed biochar, taking bamboo reed biochar with fineness of 80 to 40 meshes, and treating the bamboo reed biochar with 200 ml of a hydrogen chloride solution with a concentration of 1 mol / L for 10 hours to remove ash in the bamboo reed biochar; step 4, biochar activation: activating the biochar by adopting a KOH method, wherein the BET specific surface area of the activated biochar isnot less than 1200 m<2> / g; and step 5, biochar-soil mixing: mixing the bamboo reed biochar with soil according to a ratio of 1%-5%, adding water after uniform mixing, and enabling the water content of the soil to reach 60% or above.

The invention discloses a preparation method of a biodegradable corncob biomass water-retaining agent. The water-retaining agent is prepared by taking modified corncob and acrylamide as main raw materials, adding a crosslinking agent and an initiator, and performing crosslinking and polymerization through reaction. The preparation method has the advantages that the waste corncob is adopted as a raw material, so that production cost of the water-retaining agent is greatly reduced; a special structural characteristic that a plurality of fine pores are in the surface and the inside of the modified corncob is fully used, and the prepared degradable water-retaining agent has quite good water absorption performance and degradation performance.

The invention discloses a crushed stone-type alumina light ceramsite with an air purifying function. Ingredients of the ceramsite comprise attapulgite clay powder with an air purifying function, alumina, activated carclazyte residues, white carbon black, sodium aluminate, hollow beads, calcined gypsum powder, sodium dodecyl sulfate and a scrubable alumina photocatalyst spray liquid. Through ingredient stirring, extruded granulation, drying, crushing, screening, roasting, thermal insulation, screening, immersion, drying, screening and sealed packaging, the crushed stone-type alumina light ceramsites with an air purifying function are obtained. The crushed stone-type alumina light ceramsite with an air purifying function has a specific surface area, low bulk density, light weight, high strength, high moisture absorption and excellent adsorption and purification performances, is suitable for being used in a room, a furniture cabinet, a vehicle, a ship or other buildings, has effects of adsorption and degradation of pollutants such as formaldehyde, ammonia, benzene and TVOC and realizes the purpose of purifying the air for a long time.