99results about How to "Improve the reunion effect" patented technology

The invention discloses a high-capacity silicon-based anode material for a lithium ion battery and a preparation method thereof, and the lithium ion battery. The material comprises nanometer silicon, graphite, organic matter pyrolytic carbon and lithium fluoride. A preparation method comprises the following steps of carrying out mixing, drying and vacuum baking on the nanometer silicon, the graphite and a pyrolytic carbon organic matter precursor to obtain a composite precursor, baking the composite precursor to obtain a pyrolytic carbon coated composite, and utilizing lithium salt solution and fluoride solution to carry out in-situ reaction on the surface of the composite to generate a lithium fluoride coating layer, namely the high-capacity silicon-based anode material for the lithium ion battery. Through in-situ generation of the lithium fluoride on the surface of the silicon-based composite, the interface characteristic of the material is effectively improved, the compactness and the stability of a solid electrolyte membrane formed by the material in the first lithium insertion process is improved, so that the electrochemical performance of the material is improved, the first charge and discharge efficiency of the battery is more than 80%, and the capacity retention ratio after 50 charge and discharge cycles is more than 85%.

The invention discloses a device and method for atomizing turbulent agglomerated granules. The device is simple in structure, good in agglomeration effect and good in universality. The device comprises a shell, wherein a fume channel is formed inside the shell; a fume heat exchanger, guide blades, a double-fluid ejection atomization section and a turbulent agglomeration section are sequentially arranged inside the shell in a fume flowing direction; the fume heat exchanger is used for reducing the temperature of dust-containing fume to T, wherein T is not higher than condensation temperature of steam in the dust-containing fume; the guide blades are used for adjusting the flowing direction so that the flowing direction of granules in the dust-containing fume trends to be accordant with that of the fume; the double-fluid ejection atomization section comprises a gas supply pipeline, a water supply pipeline and double-fluid nozzles; the ejection directions of the double-fluid nozzles for connecting the gas supply pipeline and the water supply pipeline are parallel to the flowing direction of the fume; the turbulent agglomeration section comprises a plurality of turbulent elements which are arranged in sequence or in a staggered manner, and two ends of each turbulent element are fixed on the inner wall of the shell; and the turbulent elements comprise boundary plates which are symmetrically arranged by taking the fume direction as an axis of symmetry, and the front ends of the boundary plates are fixedly connected.

The invention discloses a method for inhibiting release of substrate sludge nutritive salt of a eutrophic water body, which belongs to the field of controlling substrate sludge pollution. Ferric salt passivating agent, magnesium salt or magnesium hydroxide emulsion, calcium nitrate and flocculating agent are injected into the substrate sludge within 10 centimeters away from the surface layer according to the following amount respectively. The invention further adopts the technical scheme that the method comprises the following steps: extracting the substrate sludge within about 10 centimeters away from the surface layer into a container, stirring the substrate sludge during injecting the passivating agent into the substrate sludge, and spraying the substrate sludge added with the passivating agent to the extracted substrate sludge surface layer. The release amount of ammonia nitrogen in the substrate sludge to the water body is reduced by 60 to 80 percent, the release amount of total P is reduced by 70 to 85 percent, the water stable aggregates reach over 80 percent, and the passivating agent is stable and is not easy to float. By using substrate sludge extracting mixed method, the passivating agent and the substrate sludge can be fully mixed, the treatment cost is low, and large-scale application is easy to realize. The method can be applied to nutritive salt passivating treatment of the substrate sludge of the non-drinking water bodies of seriously polluted lake regions, black and smelly rivers, landscapes and the like.

An electric catalyst used for proton exchange membrane fuel cells, active component is Pt or PtRu, auxiliary component is titanium oxide; the atom ratio of platinum and titanium is 0.01-99, the atom ratio of platinum and ruthenium is 0.01-99, the particle size of the active component is 1-20nm. The active component can be impregnated in the titanium oxide modified porous conductive material, gained support-type electric catalyst, which contained activity group sharing percentage for the quality of 1-99%, the atom ratio of platinum and titanium is 0.01-99. Active components can be added as a percentage of 0-99% of the auxiliary components, become a multi-component catalysts; adding auxiliary components was transition metal or a transition metal oxides or several. Preparation methods can be used colloidal law or impregnation - Reduction Act. The invention of the electric catalyst can be used in proton exchange membrane fuel cells.

The invention relates to a reduced graphene oxide modified antimony trisulfide battery anode material. The battery anode material is prepared by following steps: (1) adding Sb2S3 powder into anhydrousethanol, then dispersing the solution into a graphene oxide solution, and stirring the mixed solution until the mixed solution becomes uniform and stable to obtain a precursor solution; (2) transferring the precursor solution obtained in the step (1) to a hydrothermal reactor, heating the hydrothermal reactor to carry out reactions, and cooling the reactor to the room temperature to obtain suspension; and (3) filtering the suspension obtained in the step (2), washing, and drying to obtain the target product. Compared with the prior art, an Sb2S3 nano rod is prepared by a hydrothermal method,the preparation method is simple, the process is easy to control, the raw materials are easily available, and the cost is low. The prepared reduced graphene oxide modified Sb2S3 nano composite structure has an excellent electrochemical sodium storage performance and is a good sodium ion battery anode material.

The invention relates to the field of new-type flexible electrode materials and in particular to a two-dimensional nitrogen-doped porous carbon nanosheet and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a carbon nanosheet: performing first calcining on a carbon material in protection of an inert gas, cooling, and preparing the carbon nanosheet;(2) preparing a porous carbon nanosheet: adding the carbon nanosheet to oxidized acidic solution and performing an oxidation reaction, preparing the porous carbon nanosheet; and (3) preparing the two-dimensional nitrogen-doped porous carbon nanosheet: adding the porous carbon nanosheet and a surfactant to water, uniformly dispersing, adding a nitrogen-doped material, dissolving, uniformly mixing,after drying, grinding to obtain mixture powder, and performing second calcining on the mixture powder in the protection of the inert gas, cooling, and preparing the two-dimensional nitrogen-doped porous carbon nanosheet. The prepared two-dimensional nitrogen-doped porous carbon nanosheet has uniform porosity, good energy storage performance and circulation stability.

The invention relates to a reduced graphene oxide/stannate sodium ion battery negative electrode material and a preparation method and application thereof. The preparation method comprises the following steps: dispersing an aqueous solution of chlorate and sodium stannate in a graphene oxide solution, performing a hydrothermal reaction to produce a suspension, performing solid-liquid separation toobtain a precipitate, and calcinating the precipitate at high temperature to obtain the reduced graphene oxide/stannate sodium ion battery negative electrode material, wherein the chlorate is manganese chloride, cobalt chloride hexahydrate or zinc chloride. Compared with the prior art, the preparation method provided by the invention has the advantages of a simple technology, easy process control, easy obtainment of raw materials, low cost and good repeatability. A prepared reduced graphene oxide/stannate (manganese stannate, cobalt stannate and zinc stannate) composite structure has good electrochemical sodium storage performance, and is a good sodium ion battery negative electrode material.

The invention discloses a fire smoke removing system with a coupling effect of sound waves and spray and a smoke removing method using the system and belongs to the technical field of firefighting andsafety. The system comprises a loudspeaker sound source fixedly arranged on the side wall of a building passage or room and a water atomization nozzle fixedly arranged at the top of the building passage or room. In a fire disaster, when fire smoke spreads all over the building room or passage, the loudspeaker sound source and the water atomization nozzle are started simultaneously. The loudspeaker sound source is used for producing a high-intensity sound field, fine particulate matter in the fire smoke can collide and agglomerate by use of the sound wave agglomeration mechanism, the number ofthe particulate matter can be substantially reduced, and the visibility can be improved. Droplets contained in water spray can further increase the agglomeration effect and avoid breakage of agglomerated particulate matter. The fire scene visibility can be substantially improved within several seconds under the coupling action of sound waves and water spray, and escape of people in the fire disaster is guaranteed.

The invention discloses nano zero-valent iron manganese bi-metal and a preparation method and application thereof. The nano zero-valent iron manganese bi-metal is prepared by two-step liquid-phase reduction with divalent iron salt as an iron source and divalent manganese salt as a manganese source. According to the preparation method, the technology is simple, raw materials are easy to obtain, requirements for equipment are low, the process is simple, the controllability of reaction conditions is high, the dispersion of the nano zero-valent iron can be effectively improved by the addition of Mn, agglomeration of the nano zero-valent iron is prevented, meanwhile the passivation of the nano zero-valent iron is slowed down, and the prepared nano zero-valent iron manganese bi-metal has excellent reaction activity; and the nano zero-valent iron manganese bi-metal prepared by the preparation method has high catalytic oxidation reducing capacity, and has good removal effect on organic pollutants, meanwhile good migration and distribution characteristics and good degradation ability are achieved in simulated groundwater environment, and the nano zero-valent iron manganese bi-metal can be applied to the degradation and removal of organic pollutants in surface water or groundwater.

The invention relates to a halogen-free flame-retarding ultrahigh-molecular weight polyethylene material and a preparation method of same. The material is prepared from: 50-70 parts of a ultrahigh-molecular weight polyethylene base material, 0.01-25 parts of piperazine (poly) pyrophosphate, 0.01-25 parts of alkyl hypophosphite, 0-3 (not equal to 0) parts of a coupling agent, 0-3 (not equal to 0) parts of a photo-stabilizer, 0-3 (not equal to 0) parts of a plasticizer, 0-6 (not equal to 0) parts of a flow modifier, and 1-5 parts of an organically modified nano inorganic filler. The flame-retarding ultrahigh-molecular weight polyethylene material is free of halogens and has good flame-retarding effect reaching UL94 V-0 grade, and also has excellent mechanical performance.

The invention relates to a soil structure conditioner used for shajiang black soil. The soil structure conditioner is prepared from raw materials of biomass charcoal particles with particular diameter being 1-3mm, humic acid and/or humic acid salty powder which accounts for 2-5% of the weight of the biomass charcoal particles, ferric oxide powder which accounts for 2-5% of the weight of the biomass charcoal particles and water which accounts for 20-40% of the weight of the biomass charcoal particles. By adopting the soil structure conditioner to improve the shajiang black soil, the number of the macro aggregate of the soil can be improved, the permeability of the soil can be improved, the viscidity of the soil can be reduced, the tillage resistance can be reduced, the suitable tilling period can be prolonged, the specific retention of the soil can be increased, the fertility of the soil can be improved, and the crop yield can be increased; the number of carbon sequestration of the soil can also be increased. Meanwhile, the method is simple and easy to do, the cost is low, the effect is obvious and lasting, and the soil structure conditioner is easy to apply in a large area.

The invention discloses a preparation method of tin-based cathode material of a high-capacity lithium-ion battery.The preparation method includes: mixing nano tin and graphite with a pyrolytic carbon organic matter precursor to obtain composite material precursor slurry, performing spraying drying to obtain precursor powder, calcining under inert atmosphere, and grinding to obtain nano tin/graphite composite material wrapped by organic matter pyrolytic carbon.By the preparation method, the dispersity of nano tin in the tin-carbon cathode material can be increased, the material stability during lithium getting off, high conductivity of the material is guaranteed, the pyrolytic carbon wrapping layer effectively wrap the surfaces of the particles of the material, the interface feature of the material can be improved effectively, and the electrochemical performance of the tin-carbon cathode material is increased.

The invention discloses a method for preparing a nanometer nitrified beta-cyclodextrin fiber by electrostatic spinning. The method for preparing the nanometer nitrified beta-cyclodextrin fiber by electrostatic spinning comprises the steps of: mixing nitrified beta-cyclodextrin with a mixed solvent to prepare an electrostatic spinning solution containing 5%-50% by mass of the nitrified beta-cyclodextrin; adjusting a voltage range from 10 KV to 35 KV, a spinning temperature range from 20 DEG C to 30 DEG C, a speed range of a liquid discharged by an electrostatic spinning device from 0.5 ml/h to 4 ml/h, and a reception distance range from 10 cm to 30 cm by adopting an electrostatic spinning technology; and preparing the nanometer nitrified beta-cyclodextrin fiber under the action of an electrostatic field. The method for preparing the nanometer nitrified beta-cyclodextrin fiber by electrostatic spinning, disclosed by the invention, has the advantages of a small diameter, uniform distribution, very wide application foreground in the aspects of improving mechanical property, combustion performance and the like of propellants, and the like.

The invention discloses a method of removing small particulate matters in coal-fired flue gas by combining chemical agglomeration with acoustic agglomeration to solve the problem that conventional dedusting equipment is hard to remove small particulate matters in flue gas for zero emission of desulfurization and denitrification wastewater in a coal-fired power plant. The method comprises the following steps: taking the supernate after the desulfurization and denitrification wastewater of the power plant is treated; adding a high polymer adhesive and a surfactant to prepare a chemical agglomerant; spraying the chemical agglomerant into a flue in front of a dedustor through an atomizing nozzle; adding a low-frequency sound field, wherein the small particulate matters of the coal-fired power plant are agglomerated under the combined action of chemistry and sound waves; and finally, removing the agglomerated particulate matters through a conventional dedustor. In a proper condition, 70% of the small particular matters which are smaller than 10 [mu]m can grow to 10[mu] or above through agglomeration. Therefore, the problem of zero emission of the wastewater is solved, and the problem of removal of small particulate matters in coal-fired flue gas is solved. The method has a wide application prospect.

The invention relates to a fly ash melting tail gas purification technology which comprises the following steps: fly ash melting furnace tail gas passes through a quenching device firstly to be cooled to 100 DEG C or below and then enters a crystal nucleus agglomeration chamber, heavy metal chlorides in the tail gas form large-particle-size particulate matters and precipitate out under the action of low-frequency sound wave, the large-particle-size particulate matters are separated out by a two-phase separation device, the tail gas subjected to heavy metal chloride removal continuously passes through a graphite falling film absorption tower to remove HCl gas and then passes through an acid gas scrubbing tower to remove acid gas, and finally, clean tail gas is obtained to be exhausted to the external. The purification technology provided by the invention can fully and effectively remove heavy metal chloride salts and the acid gas, prevent the phenomenon of secondary pollution caused by heavy metal salts and greatly lower the waste water treatment cost of the traditional fly ash treatment technology; and in addition, the heavy metal salts obtained by recovery is equivalent to a special heavy metal rich ore and can be used as a metallurgical raw material.

The invention discloses a method for removing sintering flue gas fine particles based on pulse discharge and belongs to the technical field of pollutant emission reduction in the sintering process. The method comprises the steps that the fine particles in flue gas are charged through pulse discharge; agglomeration liquid with positive charge and agglomeration agent fogdrops with negative charge are sprayed into the flue gas; the charged fine particles and the agglomeration agent fogdrops with the opposite charge are agglomerated under the effect of attractive force of the opposite charge and grow up to form particle agglomerates; and the particle agglomerates are removed from the flue gas through capturing and collecting. According to the method, the fine particles are charged through pulse corona, the agglomeration effect of the particles is enhanced by spraying a charged agglomeration agent into agglomeration units, the agglomeration removing efficiency of the fine particles is improved, and emission of the fine particles in the iron core sintering process is reduced.

The invention relates to a rake-free separation tailing thickening sand bin, and aims to solve the problems that tailing concentration equipment in the prior art is complex in structure, low in sand discharging concentration and unsmooth in discharging. The rake-free separation tailing thickening sand bin comprises a sand bin body, a flocculation feeding tube, a center feeding barrel with a middleseparation plate, a tailing feeding tube, an overflow groove, an annular sedimentation cone, a sliding frame fluidization device and a double-screw discharging device. Through design of the structure, flow field variation of a material flow in the sand bin is changed, and the flocculation agglomeration speed of fine particle tailings is accelerated; and meanwhile, a mechanical sliding frame fluidization sand-discharging technology is adopted, so that smooth sand discharging under a condition of highest underflow concentration is realized. The rake-free separation tailing thickening sand bin has the outstanding advantages of small size, simple structure, low manufacturing cost, high concentration efficiency, high underflow concentration and the like.

The invention discloses a sewage treatment flocculating agent and a production method thereof. The sewage treatment flocculating agent comprises 10-30-mesh zeolite powder, celery leaf powder, dendrobium leaf powder, carboxymethyl starch, 8-hydroxyquinoline, chitosan, modified dissolving pulp, tung oil anhydride and modified biological oxidized oil. The production method of the sewage treatment flocculating agent comprises the step of producing the sewage treatment flocculating agent through mixing and the like. According to the sewage treatment flocculating agent and the production method thereof, by adopting the modified dissolving pulp, the tung oil anhydride and the modified biological oxidized oil as a reinforcing system, the flocculation capability and the heavy metal ion removal rateof the sewage treatment flocculating agent are improved.

The invention provides a silicon nitride solution and a preparation method thereof. The preparation method of the silicon nitride solution comprises a step of mixing silicon nitride powder with deionized water, a step of adding hydrochloric acid, and a step of stirring to obtain the silicon nitride solution. The invention also provides a polysilicon ingot casting crucible and a making method thereof. The making method of the polysilicon ingot casting crucible comprises a step of heating a crucible body, and a step of spraying the silicon nitride solution onto the surface of the inner wall of the crucible body to obtain the polysilicon ingot casting crucible. Hydrochloric acid diminishes the pH value of the silicon nitride solution and makes a Zeta potential approach zero, so the intergranular static repulsion force is reduced, the agglomeration effect is enhanced, and agglomeration is easy, thereby the bonding strength between the silicon nitride solution and the crucible is increased, and a problem of crucible stickiness caused by coat shredding is avoided.

The invention discloses a concrete early strength agent, an early strength type concrete and a preparation method of the early strength concrete. The concrete early strength agent is prepared from, by mass, 70-80% of a component A and 20-30% of a component B, the component A is a liquid mixture and comprises, by weight, 10-24 parts of silica sol dispersion liquid, 10-15 parts of siloxane emulsion, 2-4 parts of a surfactant, 8-15 parts of soluble calcium salt and 4-5 parts of alcamines; the silica sol dispersion liquid is a dispersion liquid of three substances, namely nanoscale silicon dioxide, a dispersing agent and a suspending agent, in water, and the dispersing agent accounts for 0.5-2% of the solvent water; the suspending agent accounts for 0.5-1% of the solvent water, and the nanoscale silicon dioxide accounts for 55-70% of the solvent water; and the component B is a solid mixture and comprises,s by weight, 30-40 parts of meta-aluminate, 20-30 parts of silicate, 20-30 parts of lithium salt, 2-10 parts of calcium tartrate and 0.5-1 part of methyl cellulose ether. The superposition effect of different early strength components can be exerted, the setting and hardening speed of cement is accelerated, the precipitation of hydration products is promoted, and the early strength of concrete can be obviously improved in a low-temperature environment.

The invention provides a special fertilizer for Lonicera macranthoides, which is characterized by comprising the following components in percentage by weight: 50.0-70.0% of composted chicken manure or any other poultry or livestock manure (by dry matter weight), 25.0-45.0% of inorganic fertilizer (by dry matter weight), and filler. The invention also discloses an application method of the special fertilizer for Lonicera macranthoides. The special fertilizer for Lonicera macranthoides has the advantages of high harmless degree, high organic content and abundant nutrient substances, and is beneficial to growth and ripening of Lonicera macranthoides.

The invention relates to a PM 2.5 agglomerating device. The PM 2.5 agglomerating device comprises a smoke channel and an electric dust remover. The smoke channel comprises a vertical segment, an elbow segment and a horizontal segment. The horizontal segment is divided into a first treating cavity and a second treating cavity. The elbow segment is provided with a separator. Coarse dust particles and fine dust particles in the smoke channel are automatically separated through inertia force. The other end of the horizontal segment is provided with a mixing device, and the horizontal segment is connected with a turbulent mixing agglomerating device which is connected with the electric dust remover. The PM 2.5 agglomerating device has the beneficial effects that under the action of coulomb force and adhesive power, the fine dust particles are agglomerated the first time in the first treating cavity, the primary agglomerated fine dust particles and the coarse dust particles with positive charges enter the mixing device to be agglomerated the second time, agglomerated particles are formed and enter the turbulent mixing agglomerating device to be subjected to turbulent mixing, SO3 in the smoke is effectively condensed and adsorbed, and the particle agglomeration effect is further improved.