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.

A technology and a device for removing hydrogen and nitrogen from methane-rich gas through rectification and producing liquefied natural gas. The technology comprises two parts: low-temperature liquefaction and rectification separation, wherein the low-temperature liquefaction includes following steps: firstly feeding the methane-rich gas containing hydrogen and nitrogen into a refrigerating box and liquefying a methane component in the refrigerating box with a mixed refrigerant for providing cooling capacity; and the rectification separation includes: directly feeding the liquefied methane-rich gas containing hydrogen and nitrogen into a single rectifying column to perform rectification for removing the hydrogen, the nitrogen and a less amount of carbon monoxide, wherein a gas mixture containing the hydrogen, the nitrogen and the less amount of the carbon monoxide is obtained at the top of the rectifying column; passing the gas mixture through the refrigerating box for recycling the cooling capacity and discharging the gas mixture out from the refrigerating box; and feeding back a liquid phase at the bottom of the rectifying column to the refrigerating box for being supercooled and then discharging the liquid phase out from the system to obtain a liquefied natural gas product which is not more than 500 ppm in the content of the hydrogen, is not more than 2% in the content of the nitrogen and is not more than 2% in the content of carbon monoxide. The invention provides a technology in which liquefied natural gas is produced by liquefying the methane-rich gas and meanwhile the hydrogen, the nitrogen and the carbon monoxide are removed. The technology is simple in processes and is low in equipment investment cost.

The invention discloses an improved type porous granular ammonium nitrate fuel oil explosive and a preparing method thereof. The improved type porous granular ammonium nitrate fuel oil explosive is prepared by mixing the following three raw materials in percentage by weight: 93%-95% of porous granular ammonium nitrate, 2.5%-5.0% of light diesel oil and 1.5%-4.0% of bamboo charcoal powder. The preparing method comprises the following steps of adding the porous granular ammonium nitrate to a dispersator according to quantity, then slowly adding sufficient light diesel oil, sufficiently stirring for 5 minutes, and then stopping stirring; standing for 5 minutes, starting the dispersator again, slowly adding the residual bamboo charcoal powder, continuously stirring till color and luster are uniform, wherein the black bamboo charcoal powder is uniformly absorbed on the surface of the porous granular ammonium nitrate; finally filling and sealing to obtain the finished improved type porous granular ammonium nitrate fuel oil explosive product which has the advantages of uniform stirring, excellent property, low moisture absorption and agglomeration ratio, stability in storage, safety, environmental protection, energy conservation, low consumption and low cost.

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 method for preparing high-purity mullite powder through modified fly ash at the high yield, and belongs to the technical field of fine ceramics. The method comprises the following process steps that (1) 2-8% of alumina sol is added into fly ash powder, the alumina sol and the fly ash powder are mixed through ball milling, and coating modification of the surfaces of fly ash powder particles is achieved; (2) the modified fly ash is calcined at the certain temperature, so that the content of mullite in the fly ash reaches 60-70%, and mullitization of the fly ash powder is achieved; (3) the calcined fly ash is subjected to hydrothermal treatment in an alkaline aqueous solution and cleaned with an acid aqueous solution, glass phases and other oxide impurities such as CaO, MgO, Na2O, K2O and Fe2O3 in the fly ash are removed, and mullite powder is obtained; and (4) a reverse flotation technology is adopted, quartz impurities in the mullite powder is removed, and the high-purity mullite powder with the purity larger than 98% is prepared.

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 provides road prime coat oil which comprises components in percentage by mass as follows: 50%-58% of mildoxidation slurry oil, 0.5%-2.5% of an emulsifier and the balance of water. The invention further discloses a preparation method of the road prime coat oil. The road prime coat oil can meet the technical requirements for emulsified asphalt prime coat oil for routine roads while the production cost can be lower than the emulsified asphalt prime coat oil by 20%.

The invention discloses a method for directly preparing p-xylene from synthesis gas and methylbenzene. The method comprises the following steps: enabling raw materials comprising the synthesis gas andmethylbenzene to be in contact with a catalyst in a reaction zone under a reaction condition that at least a part of raw materials is sufficiently converted, so as to obtain a reaction effluent containing p-xylene; and separating p-xylene from the reaction effluent, wherein the catalyst comprises a high dispersion metallic oxide material with the range limited by an inert carrier, an acid molecular sieve and at least one of graphite powder and a dispersing agent; in the high dispersion metallic oxide material with the range limited by the inert carrier, the inert carrier comprises at least one of silicon oxide and aluminum oxide; the metal content of metallic oxide is less than or equal to 10% by mass; and the high dispersion metallic oxide material with the range limited by the inert carrier is counted by weight, and the acid molecular sieve is selected from a modified acid ZSM-5 molecular sieve, a modified acid ZSM-11 molecular sieve and a mixture of the modified acid ZSM-5 molecular sieve and the modified acid ZSM-11 molecular sieve.

The invention discloses a stem cell extract and a preparation method and application thereof. The preparation method includes the following steps that primary stem cells are inoculated in a culture medium, primary culturing is carried out, a solution is changed every other day, when the primary stem cells grow to 80-90%, the medium is removed, the remaining stem cells are rinsed and then mixed with physiological saline, and after the induced culture is carried out, centrifugal separation is carried out to obtain a supernatant; and then the supernatant is filtered to obtain the stem cell extract. According to the stem cell extract and the preparation method and application thereof, more safety is achieved due to non-exogenous animal components, and the obtained extract presents abundant cytokines and can be directly used as a pharmaceutical preparation or mixed with adjuvants after freezing to prepare a medicine.

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 provides a biofouling-proof nylon copper composite material and a preparation method thereof. The biofouling-proof nylon copper composite material comprises, in percent by mass, 0.5-10%of a copper component, 0.1-1% of a coupling agent and 89-99.4% of nylon. The biofouling-proof nylon copper composite material includes the copper component, coupling agent and nylon which are common,and has simple compositions, no toxic substances and no pollution to the environment; the content of the copper component in the material is low, so that the cost of the material is low; when the copper compound in the copper component is compared with metallic copper, the copper compound can be dissolved out in seawater easily, and a minimum seepage concentration of antifouling organisms can be ensured.

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.

The invention provides a catalyst for improving syngas converted product selectivity and a preparation method and application thereof, relates to a cobalt-copper-manganese catalyst taking activated carbon as a carrier, and belongs to the technical field of chemical engineering. The catalyst is prepared through a co-impregnation method and is subjected to reduction activation before using. The catalyst is prepared from, by weight, 76%-83% of carrier activated carbon (AC), 6.3%-12.5% of active component metallic cobalt (Co), 3.3%-6.3% of active component metallic copper (Cu) and 1%-8.2% of auxiliary manganese oxide (MnO). The catalyst can enable syngas to generate a linear alcohol mixture which is low in methanol content and has alcohols distributed and concentrated between C2 to C5 under proper conditions. The catalyst for improving the syngas converted product selectivity and the preparation method and application thereof have the advantages of being simple in preparation, easy to operate and low in cost and have an obvious economical benefit.