718results about How to "Suitable for large-scale applications" patented technology

The present invention relates to a high energy density lithium ion battery oxide positive electrode material and a preparation method thereof. The positive electrode comprises a positive electrode material main body and a coating layer positioned on the surface of the positive electrode material main body, wherein the coating layer material is one or a combination selected from Al2O3, ZrO2, MgO, SiO2, ZnO2, TiO2 and LiAlO2, the positive electrode material main body comprises a shell layer and a core positioned inside the shell layer, the core material is Li1+x[Ni1-y-zCoyMnz]O2, the shell layer material is Li1+a[Co1-bXb]O2, or the positive electrode material main body is a mixture of Li1+x[Ni1-y-zCoyMnz]O2 and LiCoO2, and x, y, z, a and b are defined in the instruction. The positive electrode material has advantages of high capacity, good cycle performance, low surface activity, high voltage resistance, good safety and the like. The preparation method has a characteristic of simple preparation process, and is suitable for mass production application.

The invention discloses a high-efficiency plugging oil-base drilling fluid and a preparation method thereof. The drilling fluid is prepared from the following raw materials in parts by mass: 70-80 parts of slurrying oil, 20-30 parts of slurrying water, 2.5-3.0 parts of main emulsifier, 1.5-2.0 parts of auxiliary emulsifier, 2.0-2.5 parts of wetting agent, 2.0-2.5 parts of flow pattern regulator, 2.5-3.0 parts of fluid loss agent, 1.5-2.0 parts of alkalinity regulator, 0.5-0.8 part of extracting agent and 7-9 parts of plugging material. A weighting material is added so that the density of the drilling fluid reaches 1.45-1.56 g / cm<3>. By utilizing the well-drilling positive differential pressure, the high-efficiency plugging oil-base drilling fluid quickly implements bridging, filling and filming to plug the formation fractures on the well wall surface and near the well wall, effectively prevents the drilling fluid and filtrate thereof from permeating into microfractures, enhances the bearing capacity of the formation, has favorable plugging effect, and is beneficial to the stability of the well wall.

The invention discloses a method for synthesis of a cobalt nanoparticle and bamboo-like nitrogen doped carbon nanotube composite material. The method includes: dissolving a soluble cobalt salt and an amine polymer in a hydrophilic reagent according to a mole ratio of 1:(2-200), performing evaporation at 60DEG C, conducting grinding after cooling, performing calcination at 400-1400DEG C under nitrogen atmosphere, then treating the sample with acid, and carrying out washing, centrifugation and drying so as to obtain the cobalt nanoparticle and bamboo-like nitrogen doped carbon nanotube composite material. The obtained cobalt nanoparticles have small particle size and are employed to coat the head of a carbon nanotube evenly so as to combine tightly with the carbon nanotube. The composite material has application prospects in fuel cell anode materials, lithium ion battery cathode materials and the like. The method designed by the invention has the advantages of easily available raw materials, simple process and no pollution, short preparation period, mild reaction conditions, low cost, and mass synthesis capability, etc.

The invention relates to an atmospheric pollution monitoring system based on a wireless sensor network, which comprises wireless sensor network nodes, wireless sensor network sink nodes, local monitoring subcenters, a remote control terminal and a mobile phone terminal. Besides the atmospheric pollution monitoring system based on the wireless sensor network, the invention also customizes a wireless sensor network multi-level heterogeneous clustering routing protocol at the stage of network self-organization; the design of the system is reasonable, the system is easy to deploy, and the intelligent degree is high; when being applied on a large scale, the system can balance the energy consumption of the wireless sensor network nodes, accurately and timely reflect the situation of atmospheric pollution and give the alarm, the wireless sensor network nodes within monitored areas can be conveniently self-networked, and are highly scalable, a large-scale monitoring system can be constructed, and the system is suitable for popularization and application.

The invention discloses a flyash-based polymer concrete material and a preparation method and an application thereof. The flyash-based polymer concrete material comprises the following components in percentage by mass: 25%-45% of flyash, 0-15% of metakaolin, 10%-15% of cement, 0-5% of coal gangue and slag, 25%-35% of an alkali activator, 0.5%-1% of a retarder and 1%-5% of deionized water. An alkali-activated flyash-based polymer is adopted as a main gel material, so as to prepare an inorganic polymer concrete material; the polymer concrete material has the characteristics of high environmental protection property, good mechanical property and high early strength.

The invention discloses crRNA specifically targeting toward a human RSPO2 gene in a CRISPR-Cas13a system and a system and an application. The crRNA can establish a CRISPR-Cas13a system for specific targeting toward a human RSPO2 gene. A trace of a RSPO2 gene is specifically detected in a body fluid. The system is non-invasive, can perform frequent detection, and is fast in detection speed. Compared with liquid biopsy in the prior art, the system can detect a trace of a RSPO2 gene in the body liquid via fluorescent reading. The system doesn't require high-flux sequencing, is low in cost, high in detection speed, and suitable for clinic large-scale application.

The invention provides a method to improve the storage stability for waste rubber powder modified asphalt. Wherein, the opposite compound comprises: 70~98.5% basic asphalt, 1~29.5% waste rubber, 0~10.0% diluent, and 0.1~5.0% coupling agent. The method comprises: adding the agents with given ratio into the waste rubber powder past 60-item screen to mix evenly; adding the treated rubber powder into asphalt to grinde for 30~190min by special device. As the alkoxy in coupling agent can form chemical bonding with inorganic filler to form organic active monomolecular layer between interfaces, this product can improve obviously the storage stability.

The invention discloses a measurer of capacity coupling type contactless conductivity, based on serial resonance and a method. The measurer comprises a signal generator, an inductor module, an insulated measurement tube, an exciting electrode, a detection electrode, a rectifying filtering circuit, a data acquisition module and a computer, wherein the output of the signal generator excites the exciting electrode via the inductor module, the detection electrode obtains the solution conductivity measurement information in the insulated measurement tube, the rectifying filtering circuit and the data acquisition module convert the information into voltage signals to be transmitted to the computer, and the computer utilizes the one-to-one relationship between voltage and conductivity to obtain the conductivity measurement value of the object liquid. The invention utilizes serial resonance method to effectively eliminate the effect of coupling capacitance and parasitic capacitance on the conductivity measurement and expands the conductivity measurement range. The relative measurer has the advantages of wide measurement range, high sensitivity, simple structure, contactless property and low cost, which provides an effective path for measuring the liquid conductivity in tube.

The invention discloses a two-stage isomerism clustering underwater wireless sensor network and a routing method of the underwater wireless sensor network. The two-stage isomerism clustering underwater wireless sensor network comprises upper-layer sensor nodes, lower-layer sensor nodes, an offshore sink node and a base station on land. All the sensor nodes in a monitoring region of the underwater wireless sensor network form a two-stage isomerism clustering structure. The lower-layer sensor nodes form first-stage clusters and first-stage cluster head nodes. The upper-layer sensor nodes form second-stage clusters and a dynamic cluster head chain. Second-stage cluster head nodes transmit data to the offshore sink node through the dynamic cluster head chain. The offshore sink node is in direct wireless communication with the base station on land, and then the base station transmits the data to a remote control center. Through the method, average energy consumption of the nodes can be effectively reduced, the survival time of the network can be prolonged, and the underwater wireless sensor network is suitable for monitoring an underwater application environment with numerous nodes, high in expandability, more balanced in node energy consumption and suitable for large-scale application.

The invention discloses modified TiO2 loaded photocatalytic ceramsite and a preparation method thereof and belongs to the field of nano photocatalytic materials. The preparation method comprises the following steps: firstly, preparing porous ceramsite by using raw materials including industrial sludge, clay, sawdust and calcium hydroxide; and secondly, covering one layer of nano-grade modified TiO2 on the surface of the porous ceramsite through an immersion method to finally prepare the modified TiO2 loaded photocatalytic ceramsite. According to the modified TiO2 loaded photocatalytic ceramsite and the preparation method thereof, the raw materials are cheap and the process is simple; the prepared ceramsite material is uniform in grain diameter, adjustable in size, large in specific surface area and high in photocatalytic activity, and has a very high catalytic degradation capability in an ultraviolet-visible light region. The photocatalytic ceramsite material can be used for photocatalytic treatment of organic wastewater and can also be used for oxidative degradation of gas-phase organic matters.

The invention provides a method for recovering iron concentrates from alumina red mud, adopting the following technical scheme: a medium-intensity magnetic separator is adopted to recover the stronglymagnetic iron concentrates after red mud tailings are subjected to slag separation, then the obtained tailings are subjected to open rough separating and refined separating by a high gradient magnetic separator to recover weakly magnetic iron concentrates, combining the strongly magnetic iron concentrates and the weakly magnetic iron concentrates and carrying out dehydrating to obtain the iron concentrates. An slon vertical ring pulsating high gradient magnetic separator is selected to replace the traditional high gradient magnetic separator, and the medium-intensity magnetic separator is adopted to recover the strongly magnetic iron concentrates before. The method provided by the invention can be used for efficiently recovering the iron concentrates from the alumina red mud, and the obtained iron concentrates have high grades and good recovery rate; therefore, the method increases the utilization ratio of the alumina red mud, reduces the environmental pollution and is suitable for large-scale application.

The invention discloses coated type nanoscale zero-valent iron as well as a preparation method and an application thereof. The coated type nanoscale zero-valent iron comprises nanoscale zero-valent iron and sodium alginate, wherein the nanoscale zero-valent iron is coated with sodium alginate, and a mass ratio of sodium alginate to the nanoscale zero-valent iron is (0.1-0.4):1. The preparation method of the coated type nanoscale zero-valent iron comprises the step that the nanoscale zero-valent iron and a sodium alginate solution are mixed and subjected to ultrasonic treatment, and the coated type nanoscale zero-valent iron is obtained. The coated type nanoscale zero-valent iron can be used for treating sediment with heavy metal pollution, is simple and convenient to operate, good in stabilizing effect, good in mobility, low in repair cost, clean and pollution-free, has no toxic and harmful effects on the environment and has broad application prospect in the technical field of treatment of heavy metal pollution of the sediment.

The invention provides a wide-range broadband current sensor base on a tunnel magnetic resistance effect, and belongs to the field of sensing measurement. The sensor comprises an open magnet ring, current sensing chips, a compensation coil, a sampling resistor, an instrument amplifier, a zeroing circuit, a current output module and a power supply module; the current sensing chips include a high-sensitivity TMR sensing chip and a low-sensitivity TMR sensing chip, and are provided with two current measuring output points; the open magnet ring sleeves a current carrying lead, so that the current carrying lead penetrates through an inner hole of the open magnet ring; the compensation coil is wound around the open magnet ring; the high-sensitivity TMR sensing chip is arranged in an open air gap position of the open magnet ring; the low-sensitivity TMR sensing chip is arranged outside the open magnet ring; the high-sensitivity TMR sensing chip with other composition parts forms a closed loop structure; and the low-sensitivity TMR sensing chip, the instrument amplifier and the zeroing circuit form an open loop structure. The current sensor has the advantages of being wide in measuring range, wide in frequency band, small in size, high in precision, low in cost, free of intrusion and convenient to install and maintain.

The invention discloses a method for preparing magnetic biological carbon by utilizing traditional Chinese medicine residues, the magnetic biological carbon and application thereof and belongs to the field of biomass resource utilization. The method comprises the following steps: after impregnation pretreatment of the traditional Chinese medicine residues and sodium carbonate, performing ion salt impregnation and high-temperature anaerobic activation, washing, drying and the like to obtain the magnetic biological carbon. The method has the characteristics of being simple in production process, highly available in raw materials, high in product solid-liquid efficiency and the like. The method disclosed by the invention realizes the resource of the traditional Chinese medicine residues, has great significances in expanding the use of wastes extracted from the traditional Chinese medicines and expanding the source and the application scope of biological carbon adsorbents and can be widely applied to the water treatment field, thereby having good economic benefits and social benefits.

The invention provides a drilling fluid for shale hydrocarbon reservoir exploration. The drilling fluid is based on water, and comprises 4-6wt% of bentonite, 2-5wt% of potassium silicate, 0.2-0.5wt% of a coating inhibitor, 0.2-1.5wt% of a flow pattern regulator, 4-6wt% of a fluid loss additive, 2-3wt% of a shale caving inhibitor, 2-3wt% of a plugging agent, 0.5-1wt% of a filter cake surface modifier, 2-4wt% of a lubricant and 0.4-0.6wt% of a pH value regulator. The drilling fluid has the characteristics of good plugging property, strong inhibition, good lubricity and stable high temperature performances to shale hydrocarbon reservoir stratums, and is suitable for the exploration of shale hydrocarbon reservoirs.

The invention discloses an organic / inorganic hybrid solar cell and a preparation method thereof. A ZnO nanorod array which is vertically grown on an ITO substrate is taken as a template, and a ZnO-CdS heterogeneous core shell structure nanorod array with a core of ZnO and a shell of CdS is prepared. Through compounding a polymer and the ZnO-CdS heterogeneous core shell structure nanorod array, a solar cell with an anode of ITO and a cathode of an Au film is prepared. When thickness of the CdS shell is about 6 nm, cell performance is best, open-circuit voltage reaches 0.89 V, short circuit current is 2.83 mA / cm<2>, and conversion efficiency reaches 0.74%. Compared with a pure ZnO nanorod array cell, open-circuit voltage of a ZnO-CdS array cell is raised by 170%, short circuit current of the ZnO-CdS array cell is increased by 146%, and conversion efficiency of the ZnO-CdS array cell is raised by 517%.

The invention relates to a method for producing a runny preserved duck egg semi-continuously and rapidly through vacuum decompression. The preserved duck egg is soaked by adopting a vacuum decompression semi-continuously production technology, air in the duck egg can be pumped out through repeated vacuumizing, then in the process of rising to normal pressure, alkali liquor can permeate into the duck egg rapidly due to the pressure difference of the interior and the exterior of the duck egg at the beginning of salting, so that the salting period of the preserved duck egg is shortened. The method has high degree of mechanization, can be operated semi-continuously, can improve the production efficiency of the preserved duck egg, uses unleaded feed liquid, and can prepare safe and harmless preserved duck eggs.

The invention relates to a selective hydrodesulfurization catalyst of a combined alumina base and a preparation method thereof. The carrier of the catalyst is compounded by macroporous alumina with a specific surface of 280-300m<2> / g, and a pore volume of 0.8-0.9mL / g as well as fenestral alumina with a specific surface of 250-280m<2> / g, and a pore volume of 0.3-0.4mL / g; the active components of the catalyst are cobalt and molybdenum; the addition agents of the catalyst are magnesium and boron. The preparation method of the catalyst comprises: mixing the macroporous alumina and the fenestral alumina; adding sesbania powder and nitric acid, then carrying out mixing kneading, shaping, drying and baking on the mixture to prepare the compound carrier of the alumina; then loading the addition agents of magnesium and boron as well as the active components of cobalt and molybdenum in sequence, then carrying out drying and baking on the mixture to prepare the catalyst. The catalyst has excellent gasoline selectivity and hydrodesulfurization activity, low loss of product researching octane number, high liquid yield, and the like.

The invention belongs to the field of terahertz wave electromagnetic device design. The invention relates to a broadband adjustable wave absorber with a vanadium dioxide metamaterial loaded on a dielectric layer, which is characterized in that a metal layer, the dielectric layer and a vanadium dioxide VO2 resonant ring form basic units, and a plurality of basic units form a continuum array with aplanar array structure, so that the broadband adjustable wave absorber with the vanadium dioxide VO2 resonant ring loaded on the dielectric layer is formed. The structure is simple, experiment manufacturing is easy, the thickness is small, a new 'switching' function can be achieved on the wave absorber by adjusting the temperature, and more excellent wave absorbing performance such as bandwidth extension, polarization independence and incident angle insensitivity is achieved.

The invention discloses a solar battery based on an inorganic bulk heterojunction and a preparation method thereof. The battery comprises a glass substrate, an FTO (fluorine-doped tin oxide) layer which is used as a positive electrode, a heterojunction composite film layer consisting of an Sb2S3 (stibnite) block and a TiO2 (titanium dioxide) nano-bar array, a polymer MEH-PPV electron barrier layer, a PEDOT: PSS hole transferring layer and an Au (gold) film layer as a battery negative electrode. The preparation method of the battery is simple, and the battery has a spectrum response range of 300 nm to 750 nm; and when an optical active layer of the battery stays at an illumination state, conversion efficiency of the battery can reach 5.58 percent.

The invention relates to the technical field of biological fertilizers, in particular to a biological organic fertilizer and a method for preparing the same. The biological organic fertilizer is mainly made of raw materials including, by weight, 50-80 parts of animal feces, 40-60 parts of crop straw, 10-25 parts of wheat bran, 5-20 parts of peanut bran, 10-30 parts of rice bran, 10-25 parts of biogas residues, 15-30 parts of plant ash, 2-10 parts of brown sugar, 1-5 parts of microbial nutrient solution and 1-10 parts of starter culture. The biological organic fertilizer and the method have the advantages that soil properties of soil can be improved, the resource utilization rates can be increased, and the biological organic fertilizer and the method are environmentally friendly and are free of pollution; abundant balanced nutrition can be provided for crops, accordingly, the yield of the crops can be effectively increased, and the quality of the crops can be effectively improved.

The invention discloses rubber vulcanized rubber containing ionic liquid modified graphene oxide and a preparation method of the vulcanized rubber. The rubber vulcanized rubber comprise the following components in parts by mass: 100 parts of rubber, 2-6 parts of ionic liquid modified graphene oxide, 2-10 parts of zinc oxide, 1-5 parts of stearic acid, 1-3 parts of a vulcanization accelerator, 2-5 parts of an anti-aging agent and 1-4 parts of a vulcanizing agent. The rubber disclosed by the invention is simple and convenient in preparation steps and is suitable for large-scale application; and the prepared rubber vulcanized rubber has the properties of excellent mechanical property, thermal conductivity and solvent resistance.

The invention discloses a method for producing biological butanol with straw-like materials or agricultural and forestry wastes, comprising the following steps: the straw-like materials or agricultural and forestry wastes are firstly crushed and then soaked in hot water; then diluted acid is used as catalyst for carrying out hydrolysis on the mixture; then solid-liquid separation is carried out on the mixture, the adsorption and decoloration as well as the solid-liquid separation are carried out the liquid part, ion exchange and deacidification are carried out on the liquid material to enable the liquid material to become aqueous solution containing pentose; solid matter of the hydrolyzed diluted acid is firstly washed by water and then cellulose in the solid matter is enzymolyzed to obtain the aqueous solution containing hexose; aqueous solution containing pentose is solely fermented or the aqueous solution containing pentose and the aqueous solution containing hexose are mixed and then fermented, rectification separation is carried out on the consequential fermentation broth to obtain acetone, butanol and ethanol. The method of the invention realizes the maximum utilization of the straw-like materials or agricultural and forestry wastes, reduces cost of acetone, butanol and ethanol, thus being suitable for industrial large-scale application.

The invention relates to a preparation method for an air purifying filter screen piece. A preparation method with which air purifying screen pieces which are safe in use and wide in application range can be prepared does not exists at present yet. The preparation method is characterized by comprising the following steps that a transition metal oxide as a main purifying material and an inorganic porous material as an auxiliary additive are adopted to prepare air purifying particles; a non-woven fabric serves as a base body, fine fiber with the same non-woven fabric material is selected as filter screen binder, the air purifying particles are bond to the non-woven fabric serving as the base body through the binder, a layer of non-woven fabric with the same base body material is bond to the air purifying particles to serve as a covering piece, and the air purifying filter screen piece is obtained. The air purifying filter screen piece made of the non-woven fabric through the preparation method has the advantages of being high in purifying efficiency, long in service life, safe in use and wide in application range and is suitable for being produced and applied on a large scale.

The invention discloses a method for treating algal bloom by using modified attapulgite as flocculant, comprising the following steps: dipping the attapulgite powder into hydrochloric acid for 23-25h according to the ratio of solid to liquid being 1-3:2-4, drying, pulverizing into powder to obtain flocculant; adding the flocculant into algae water, stirring, standing, and then removing algae floc by a filtering or spooning method. The invention can effectively adsorb flocculating algae, thereby being convenient to remove algae floc by the filtering or spooning method, and having obvious effect on removing nitrogen and phosphorus in water body; the method can treat both the principal and secondary aspects, fundamentally removes danger caused by algal bloom storm, and has low cost, thereby having great application value and market potential.

The invention discloses a preparing method for a composite repairing agent and the composite repairing agent prepared through the method. The preparing method comprises the steps that nanometer zero-valent iron is added in a sulfosalt solution, and a sulfosalt and nanometer zero-valent iron mixed solution is obtained; a hydroboron solution is added in the mixed solution to be sufficiently stirred,sulfide is reduced through the reducing capability of hydroboron, supernate is removed, and a vulcanized nanometer iron solid is obtained; and the vulcanized nanometer iron solid and a persulfate solution are mixed, and the composite repairing agent is obtained. A method for repairing organic pollutants in polluted soil and underground water through the composite repairing agent is further disclosed. The method can be widely applied to water treatment and soil repairing and has the beneficial effects that the production technology is simple, and preparing raw materials are easy to obtain; andsynchronous treatment of the organic matter in the polluted soil and the underground water is achieved, and good economic benefits and social benefits are achieved.

The invention relates to an ammonia gas leakage protecting device which comprises a first ammonia gas detecting unit, a second ammonia gas detecting unit, a data collection control unit, a refrigeration action unit, a single freeze action unit, a communication unit and an emergency illuminance unit. The first ammonia gas detecting unit is arranged in a refrigerating station, the second ammonia gas detecting unit is arranged in a single freezing area, and ammonia gas detectors are arranged in the two ammonia gas detecting units. The data collection control unit comprises a data collection module, a comparison module, a storage module and a logic control module. The refrigeration action unit comprises a first exhaust fan controller, a first spray controller and a first valve controller. The ammonia gas leakage protecting device can detect the ammonia concentration in the refrigerating station and in the single freezing area of a manufacturing shop. In addition, after data collection, all controllers are started, and loss caused by ammonia gas leakage can be prevented.

The invention discloses a preparation method of ferric sulfide modified sludge-based biochar, and belongs to the field of biomass resource utilization. According to the preparation method, the ferricsulfide modified sludge-based biochar is obtained via following steps: ferric salt dipping, high temperature anaerobic activation, hydroboron reduction, and sulfide modification. The preparation method is simple; the raw materials are easily available; active sludge resource utilization is realized; great importance on expansion of active sludge treatment method and biochar adsorbent sources and application ranges is achieved; the ferric sulfide modified sludge-based biochar can be widely used in the fields of water treatment and soil restoration, and excellent economic benefit and social benefit are achieved.

The invention discloses a method and a device for capturing the carbon dioxide in the flue gas of a power station boiler. The device comprises a denitration, dust-removal and desulfurization system of a flue gas pretreatment system, and main tower equipment such as a water scrubbing tower, an absorption tower and a regeneration tower. The system also comprises a steam supply system, a solution storage tank system, a flue gas drying / absorbing and heat exchange system, a solution absorption-generation system and an amine recovery heater. The method and the device organically integrate a power plant and carbon capture and storage (CCS) into one system, thus effectively utilizing the condition that a great deal of steam is supplied by the power plant, solving the problem that the water balance is destroyed by the flue gas with water entering a decarburization circulating system, and greatly reducing the consumption of a decarburization solvent. A solvent absorption-regeneration circulating system designed for the decarburization solvent is provided with a barren liquor heat exchanger, a barren / rich liquid heat exchanger and a rich liquid heat exchanger, so that the energy utilization efficiency of the system is greatly improved, and the energy consumption of a CCS system is obviously reduced.

The invention discloses a preparation method of a wear-resistant super-hydrophobic metal surface. The preparation method includes the steps of preparing ordered micron-structure array on the surface of a metal base by means of mask electrochemical micro-machining; by ultrasonic assisted anodizing, generating porous secondary coarse structure on the surface of the metal base with the ordered micron-structure array; spraying hydrophobic material to the surface of the porous secondary coarse structure, and baking after natural volatilization of solvent to obtain the product. According to the preparation method, in the processing of the ordered micron-structure array, the mask is provided with a flexible insulating film which has micron-structure array pattern and is treated through ultraviolet laser, and can be reused; thus, processing steps are decreased, efficiency is improved, cost is lowered, and application in scale is facilitated. Besides, the micron coarse structure is generated directly on the body of the metal base so that high strength is achieved; the processed metal surface porous structure can protect the hydrophobic coating well, and accordingly hydrophobic property and durability are improved.