84results about How to "Low component content" patented technology

Aqueous polyurethane dispersions are made from urethane prepolymers comprising one or more polyhydroxy compounds from ketone functional molecules derived from an epoxidized natural oil. Addition of a hydrazine functional moiety to the prepolymer dispersion can further provide a crosslinking mechanism resulting in the formation of azomethine linkages in the resulting polyurethane during drying. When the ketone functional molecule is derived from levulinic acid and epoxidized vegetable oil, the resulting urethane dispersion can also be converted into a hybrid polyurethane-vinyl dispersion by adding and polymerizing one or more vinyl monomers in the polyurethane prepolymer or polyurethane dispersion.

The invention provides a gasoline desulfurization method. The gasoline desulfurization comprises the following steps: cutting a gasoline raw material into a light gasoline fraction and a heavy gasoline fraction; performing adsorption desulfurization on the light gasoline fraction to obtain desulfurized light gasoline fraction; and performing selective hydrogenation desulfurization on the heavy gasoline fraction to obtain desulfurized heavy gasoline fraction, wherein the cutting temperature of the light gasoline fraction and the heavy gasoline fraction is 70-110 DEG C. By adopting the gasoline desulfurization method, not only can deep desulfurization of gasoline be realized, but also the octane loss is low.

The invention discloses a waste lithium ion battery crushing and sorting device and method. The crushing and sorting device comprises a feeding device; a rough crushing machine of which the feeding end is connected with the discharging end of the feeding device; a crushing machine of which the feeding end is connected with the discharging end of the rough crushing machine; a multistage sorting device of which the feeding end is connected with the discharging end of the crushing machine; a pyrolyzing furnace of which the feeding end is connected with the discharging end of the multistage sorting device; a material cooling bin of which the feeding end is connected with the discharging end of the pyrolyzing furnace; a second vibrating screen of which the feeding end is connected with the discharging end of the material cooling bin; a fine crushing machine of the feeding end is connected with the discharging end of the second vibrating screen; a third vibrating screen of which the feedingend is connected with the discharging end of a separator; and a jigging machine of which the feeding end is connected with the discharging end of the third vibrating screen. According to the waste lithium ion battery crushing and sorting device and method, high-efficiency recovery of valuable components in a lithium ion battery can be achieved; and the sorting effect is good, and the recovery rateof black powder is high.

The invention discloses a propylene catalyst for allylene and propadiene selective hydrogenation in C3 fraction and a preparation method thereof; in the invention, after the catalyst passes through the load active metal component, ionization irradiation treatment is needed to be carried out, and the main active metal component Pd of the prepared catalyst is in a single-substance state under room temperature and air condition, and the mean grain size of the active metal component is less than 15nm. The catalyst has the advantages of low load capacity of active metal component Pd, simple preparation process, being applied to the production process of petrochemical industry propylene, and high activity and selectivity.

The invention discloses an electric furnace phosphorus preparation method, comprising phosphorite pretreatment and phosphorus preparation in a furnace, wherein the phosphorite pretreatment comprises steps of: mixing phosphorite powder with a binder to obtain mixed ore powder; pressing the mixed ore powder into pellets; performing first high temperature roasting and cementing on the pellets to obtain pretreatment pellets. The phosphorus preparation in the furnace comprises the steps of: feeding the pretreatment pellets into a yellow phosphorus electric furnace, and performing second high temperature roasting cementing by furnace gas; reacting in a melting zone to prepare the yellow phosphorus. The method can effectively use powdery phosphorite, obviously improve finished product quality and obviously reduce energy consumption.

The invention discloses a catalyst for quickly degrading formaldehyde in air at the room temperature. The catalyst comprises metal compounds and adsorption carriers for loading the metal compounds. Precious metal components are loaded on the metal compounds. The catalyst has the advantages that metal oxide is loaded on inexpensive adsorption materials such as zeolite, effects of adsorbing and enriching gas can be sufficiently realized by the adsorption materials, effects of quickly catalytically oxidizing the formaldehyde can be realized by oxide groups in the presence of molecular electrostatic fields, and effects of reducing the catalytic reaction temperatures can be realized by precious metal; the precious metal components are low in content, accordingly, the problems of high cost and quick room-temperature degradation of precious metal catalysts in the prior art can be solved by the aid of the catalyst, and the formaldehyde can be quickly oxidized into carbon dioxide and water at the room temperature by the catalyst; the low content of the precious metal components can reach 0.019-0.031% and is far lower than the contents of precious metal components in existing catalysts.

The invention discloses a planting method for improving growth and development and fruit quality of tomatoes. The planting method comprises the steps that tomato seedlings are cultivated; LED plant growth lamps are adopted as light sources to be arranged above the tomato seedlings for irradiation, and the light period every day is set to be 12 h illumination/12 h non-illumination or 16 h illumination/8 h non-illumination; when the tomatoes enter the flowering stage, an EDTA-Fe aqueous solution with the concentration of 100-200 [mu] mol.L <-1 > is sprayed to tomato plants, the EDTA-Fe aqueous solution is uniformly sprayed to the front and back surfaces of leaves once a week, and the tomato plants are irrigated with a nutrient solution containing no Fe element once every other month to ensure sufficient nutrients; and after the EDTA-Fe aqueous solution is sprayed for 55-65 days, when 80% of the tomatoes on the tomato plants turn red and peels are slightly soft, spraying of the EDTA-Fe aqueous solution is stopped. According to the planting method for improving growth and development and fruit quality of the tomatoes, the tomato quality improvement effect is optimal by spraying 100 to 150 [mu] mol.L <-1 > EDTA-Fe aqueous solution on the surfaces of the leaves in the photoperiod of 16 h illumination/8 h non-illumination.

The invention discloses a technology for preserving grapes by using a tea polyphenol composite preservative. According to the invention, a tea polyphenol solution, a chitosan solution and a sodium nitroprusside solution are used as preservatives, and the grapes are preserved after being soaked. The fresh-keeping technology of the present invention is environmentally friendly, has low cost, and hasgood fresh-keeping effect of grapes at normal temperature.

The invention discloses a preparation method for a health cigarette, and a product. The preparation method for the health cigarette is characterized by comprising the following steps of: boiling mixed liquid of the following raw materials in percentage by weight: 2 to 4 percent of sliced dwarf lilyturf root, 2 to 4 percent of sliced asparagus, 5 to 10 percent of sliced liquoric root, 5 to 7 percent of unibract fritillary bulb and the balance of water, cooling to 40 to 50 DEG C, immersing tobacco leaves in the filtered clear liquid for 25 to 40 minutes, taking the tobacco leaves out, mixing the tobacco leaves, Mongolian dandelion herb leaves and fresh heartleaf houttuynia herb leaves according to the proportion of 1:1:2, drying, and coiling the leaves to prepare the cigarette. The cigarette prepared from traditional Chinese medicines reduces the tobacco content, and has the effects of preventing and treating pneumonia, phthisis, sore throat and constipation.

The invention discloses an epitaxial wafer of a light-emitting diode and a preparation method thereof and belongs to the technical field of phoelectrons. The epitaxial wafer includes a substrate, a buffer layer, a u-shaped GaN layer, an n-shaped GaN layer, a stress release layer, an active layer and a p-shaped GaN layer. The stress release layer includes InxGa (1-x) N alyers and n-shaped AlyGa (1-y) N layers which are alternated. Since the constituent component of In in the InxGa (1-x) N layers which approach the n-shaped GaN layer is smaller than the constituent component of In in the InxGa (1-x) N layers which approach the active layer, the stress release layer reduces the recession of the epitaxial wafer and has smaller protrusion. The constituent component of In in the InmGa (1-m) N well layer is smaller than the constituent component in the InxGa (1-x) N layer. The active layer makes the epitaxial layer to recess towards one side of the substrate when the active layer grows, which offsets the protrusion which is formed upon growing the stress release layer and reduces warpage of the epitaxial wafer.