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2474results about How to "Strong absorption capacity" patented technology

Odorless anti-formaldehyde environment-friendly internal wall latex paint and preparation method thereof

ActiveCN103059679AStrong absorption capacityStrong sustainable degradation abilityEmulsion paintsEmulsionSlurry
The invention discloses an odorless anti-formaldehyde environment-friendly internal wall latex paint and a preparation method thereof. The odorless anti-formaldehyde environment-friendly internal wall latex paint is prepared from the following components in percentage by weight: 1-15% of visible light induced nano titanium dioxide photocatalyst slurry, 15-35% of odorless emulsion, 1-15% of formaldehyde absorbent, 0.5-2% of dispersing agent, 0.2-3% of thickening agent, 0.2-1% of wetting agent, 0.1-1% of defoaming agent, 0.5-5% of film-forming assistant, 0.2-3% of anti-freeze agent, 20-40% of pigment and filler, 0.1-1% of pH regulator, 0.01-0.1% of anticorrosive bactericide and 15-40% of deionized water. The invention adopts an IPS+odorless technique, and the visible light induced nano titanium dioxide photocatalyst and the formaldehyde absorbent are added, thereby achieving the optimal effect of removing formaldehyde and other harmful substances through physical adsorption and chemical decomposition. The invention can be widely used for decorative spraying of various internal walls and other constructions.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN) +1

Organic light emitting devices

An organic electroluminescent device includes an anode, a cathode, and a light emitting zone including a material that at least one of reduces triplet / triplet interaction, reduces triplet / singlet interaction, and reduces singlet / singlet interaction.
Owner:LG DISPLAY CO LTD

Carbon nano tube film-based solar energy battery and its preparing method

This invention relates to solar energy battery of carbon nanometer tube film and its process method in solar battery and nanometer material application technique field, which comprises the following technique: adopting carbon nanometer tube film as photo electricity conversion materials with carbon nanometer film as upper electrode; the film is set with transparent conductive film as conversion materials; the film is used as upper electrode.
Owner:TSINGHUA UNIV

Carbon nanotube film based solar cell and fabricating method thereof

A carbon nanotube-based solar cell and fabricating method thereof are provided. The method is achieved by applying carbon nanotube film (1) photoelectric conversion material and an upper electrode simultaneously. The method improves photoelectric conversion efficiency and life time of the solar cell, the fabricating method of the solar cell is simple, and the fabricating cost is low.
Owner:TSINGHUA UNIV

Biopsy device with acoustic element

The invention relates to a biopsy device, particularly a biopsy device comprising a shaft with a transducer element for providing information about acoustic properties of a material to be analysed, a system of positioning a biopsy device and a method for positioning a biopsy device. The biopsy device may be adapted to take biopsies of different regions of the 5 human body for excluding or detecting abnormalities as cancerous lesions. The biopsy device may be used to measure acoustic properties of the material while inserting the tip portion of the biopsy device into the material to be analysed. The biopsy device may further allow measurement based on elastography.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV

Electromagnetic wave absorber

By using a high electromagnetic wave absorbing loss material and adding it in a small amount to a matrix, an electromagnetic wave absorber useful for GHz band, which can demonstrate the electromagnetic wave absorption capability without ruining characteristics of the matrix, and can enjoy a good formability and a low manufacturing cost, is provided.The disclosed is an electromagnetic wave absorber which is characterized in that carbon fibrous structures are contained in the matrix, at a rate of 0.01-25% by weight based on the total weight, wherein the carbon fibrous structure comprises a three dimensional network of carbon fibers each having an outside diameter of 15-100 nm, wherein the carbon fibrous structure further comprises a granular part with which the carbon fibers are tied together in the state that the concerned carbon fibers are externally elongated therefrom, and wherein the granular part is produced in a growth process of the carbon fibers.
Owner:MITSUI & CO LTD

Time-resolved fluorescence spectrometer for multiple-species analysis

A time-resolved, fluorescence spectrometer makes use of a RadiaLight® optical switch and no dispersive optical elements (DOE) like gratings. The structure is unique in its compactness and simplicity of operation. In one embodiment, the spectrometer makes use of only one photo-detector and an efficient linear regression algorithm. The structure offers a time resolution, for multiple species measurements, of less than 1 s. The structure can also be used to perform fluorescence correlation spectroscopy and fluorescence cross-correlation spectroscopy.
Owner:OPTICAL ONCOLOGY

Amido-containing ionic liquid used for absorbing acidic gases and preparation method and application thereof

The invention provides an amido-containing ionic liquid used for absorbing acidic gases and a preparation method and application thereof and in particular relates to a method for absorbing acidic gases of CO2, H2S, SO2 and the like by using an amido-containing ionic liquid. The amido-containing ionic liquid comprises one or more of primary amine, secondary amine and tertiary amine, wherein positive ions of the ionic liquid are derived from organic polyamines, negative ions of the ionic liquid are derived from inorganic acid or organic acid, and the ionic liquid is prepared by mixing the organic polyamines with the inorganic acid or organic acid and then carrying out neutralization reaction through acid and alkali. The ionic liquid has the advantages of low cost, simple preparation method,strong absorbing capability and short balance time, can be used for the enriching of acidic gases, the deacidification refining of acid-containing gases of natural gas, refinery gas, methane, coal gas, synthesis gas, coke-oven gas, pyrolysis gas, smoke, motor vehicle tail gas and the like and the purification of gases under a proper space and an operating environment; meanwhile, the ionic liquid absorbing the acidic gases can release the acidic gases through pressure reduction and temperature raise, thus the absorbing capability of the ionic liquid is restored and the multiple absorption property of the ionic liquid is better.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Ceramic coating diaphragm for lithium battery and preparation method of ceramic coating diaphragm

The invention discloses a ceramic coating diaphragm for a lithium battery and a preparation method of the ceramic coating diaphragm, and belongs to the technical field of batteries. The ceramic coating diaphragm comprises a ceramic coating and a substrate diaphragm, wherein the ceramic coating is prepared by uniformly coating the substrate diaphragm with water-based ceramic coating slurry; the ceramic coating slurry comprises components in percentage by weight as follows: 10%-30% of aluminum oxide, 0.5%-3% of a bonding agent, 0.2%-1.0% of an additive and 0.01%-0.1% of an auxiliary; and the aluminum oxide is nanometer aluminum oxide powder with the grain diameter ratio D1 / D2 of 0.10-0.20. According to the technical scheme, the safety of the ceramic coating diaphragm is improved, the wetting ability of electrolyte is improved, and the cycle life of the battery can be prolonged when the ceramic coating diaphragm is applied to the lithium battery.
Owner:SHANGHAI ELECTRICGROUP CORP

Bimetallic-organic-framework-based derived porous carbon/multi-wall carbon nanotube nano composite absorbing material and preparation method thereof

The invention discloses a bimetallic-organic-framework-based derived porous carbon / multi-wall carbon nanotube nano composite absorbing material and a preparation method thereof. On the basis of a hightemperature pyrolysis method, the porous carbon / multi-wall carbon nanotube nano composite material is prepared by using a multi-wall carbon nano tube as a carrier, cobaltous nitrate hexahydrate and zinc nitrate hexahydrate as metal salt precursors, 2-methylimidazole as an organic ligand, and methanol and ethanol as mixed solvents. The preparation method has good green and environment-friendly effects; no hazardous by products are generated; and the preparation process is simple. The prepared nano composite material has advantages of high electromagnetic wave absorption capacity, large absorption frequency bandwidth and low density. Electromagnetic wave with different wavebands can be absorbed effectively by adjusting the additive amount of the multi-wall carbon nano tube and the coating thickness. The bimetallic-organic-framework-based derived porous carbon / multi-wall carbon nanotube nano composite absorbing material and the preparation method thereof have the great application valuein the electromagnetic absorption and electromagnetic shielding fields.
Owner:ANHUI UNIV OF SCI & TECH

Perovskite thin-film photovoltaic cell and manufacturing method thereof

The invention relates to a perovskite thin-film photovoltaic cell and a manufacturing method of the perovskite thin-film photovoltaic cell. The perovskite thin-film photovoltaic cell is composed of a conducting transparent substrate, a perovskite light-absorbing layer, a hole transfer layer and a metal electrode. The perovskite thin-film photovoltaic cell has the advantages that the structure is quite simple, a traditional electron transfer layer which needs high-temperature sintering is omitted due to the fact that a perovskite material serves as the light-absorbing layer and achieves the electron transfer function, and a porous layer is not needed either; the perovskite material is high in light-absorbing performance, the whole cell is manufactured at a low temperature, the complicated processes such as high-temperature sintering are not needed, and therefore the manufacturing cost of the cell is effectively reduced; the great promotion function is achieved on the flexibility of the cell and the large-sized reel-to-reel printing manufacturing of the cell; the whole manufacturing technology of the cell is simple, the popularization of the technology is facilitated, high photoelectric converting efficiency (approximate to 14 percent) and good device stability are obtained particularly, and therefore the industrial application prospect is achieved.
Owner:WUHAN UNIV

Thermal-insulation window film and preparation method thereof

The invention relates to a thermal-insulation window film and a preparation method thereof. The thermal-insulation window film is combined by multiple layers, wherein a thermal-insulation acrylic acid adhesive layer (3-1) is formed by a mixture of a thermal-insulation matter, an acrylic acid adhesive, a curing agent, an ultraviolet absorber, a dye, butanone and toluene in a mass ratio of (0.01-3.0):(9-60):(0.003-0.02):(0.001-0.015):(0-2):(5-24):(3-13); and the thermal-insulation matter is N,N,N',N'-tetrakis[4-(dibutylamino)phenyl]-1,4-cyclohexadiene-3,6-diaminium (1:2). The rate of the rejection to infrared light with a wavelength of 850 to 1,050 nanometers of the thermal-insulation window film is 96.7 percent, the light transmittance of the thermal-insulation window film is 71 percent, the rate of the rejection to ultraviolet light with a wavelength of 360 nanometers of the thermal-insulation window film is 99.9 percent, and thus, the rate of the rejection to infrared light with a wavelength of 850 to 1,050 nanometers of the thermal-insulation window film has high light transmittance and excellent ultraviolet-proof effect.
Owner:CHANGZHOU SANYOU DISSAN PROTECTIVE MATERIAL MFG

Technology for processing tobacco stalk into shreds

The invention provides a technology for processing tobacco stalk into shreds, and belongs to the technical field of tobacco processing. The technology disclosed by the invention has the following steps of: pretreating tobacco stalk, expanding the tobacco stalk with microwave, washing the tobacco with water, storing the tobacco stalk, straightening out the tobacco stalk, slicing the tobacco stalk, charging and storing stalk slices, shredding the stalk slices, drying and shaping the stalk shreds, and perfuming the stalk shreds and storing the stalk shreds. Equipment used in the technology is purchased from the market, wherein the equipment which is purchased from the market, adopts a low-frequency (915MHz) high-power (more than 10kW) microwave magnetron, and transports the tobacco stalk by a belt is improved into equipment which adopts an ultrahigh-frequency (2450MHz) single-pipe low-power (1.5kW) microwave magnetron, performs group control on the microwave magnetron and transports tobacco stalk by a drum. The technology has the characteristics that the tobacco stalk shreds are good in quality consistency and more similar to tobacco leaf shreds in the physical property, and have high sensory quality and filling value; and uniformity, stability and mixing proportion of the tobacco stalk shreds are improved when the tobacco stalk shreds are mixed with the tobacco leaf shreds, the quality of cigarette is improved, the application range and use ratio of the tobacco stalk shreds in the cigarette are improved, and the aims of tar reducing, harm reducing, cost reducing and efficacy enhancing are achieved.
Owner:YUNNAN RES INST OF TOBACCO SCI

Condensation Type Polymer-Containing Anti-Reflective Coating For Semiconductor

There is provided an anti-reflective coating forming composition comprising a polymer having a pyrimidinetrione structure, imidazolidinedione structure, imidazolidinetrione structure or triazinetrione structure and a solvent. The anti-reflective coating obtained from the composition has a high preventive effect for reflected light, causes no intermixing with photoresists, and can use in lithography process by use of a light having a short wavelength such as ArF excimer laser beam (wavelength 193 nm) or F2 excimer laser beam (wavelength 157 nm), etc.
Owner:DYMAS FUNDING COMPANY LLC AS AGENT +1

Inorganic nano particle and polymer composite modified emulsified asphalt

A modified emulsion asphalt compounded by inorganic nano-particles and polymer contains 200-700 parts by weight of asphalt, 2-80 parts by weight of modified inorganic nano-particles, 5-50 parts by weight of styrene-butadiene rubber latex, and 170-793 parts by weight of water, wherein the modified inorganic nano-particles is prepared by mixing 95-98 parts by weight of inorganic nano-particles with 2-5 parts by weight of coupling agent, and each components are mixed, followed by normal emulsion treatment to get the emulsion asphalt. The invention utilizes unique surface effect, small size effect and macroscopic quantum tunneling effect etc. of the inorganic nano-particles to give the product comprehensive properties, such as good wear resistance, intensity sum, anti-aging property and fine waterproof effect etc. Using the invention can increase the road maintenance cycle and decrease the cost. Furthermore, the water-proof cost of construction industry is greatly decreased.
Owner:HUNAN UNIV

Backlight module of display device and white light LED

The invention discloses a backlight module of a display device and a white light LED. The backlight module comprises a lamp bar and a light guide plate, wherein the lamp bar is provided with a plurality of ultraviolet light LEDs, and the light-entering face of the light guide plate and the ultraviolet light LEDs are arranged oppositely. A path of the process from light emitted by the ultraviolet light LEDs to the light shot from the light-exiting face of the light guide plate at least comprises an RGB quantum dot fluorescent powder layer. The RGB quantum dot fluorescent powder layer comprises a red light quantum dot fluorescent screen, a green light quantum dot fluorescent screen and a blue light quantum dot fluorescent screen, wherein the red light quantum dot fluorescent screen, the green light quantum dot fluorescent screen and the blue light quantum dot fluorescent screen are sequentially arranged. The RGB quantum dot fluorescent powder layer generates high-purity white light under excitation of ultraviolet light emitted by the ultraviolet light LEDs. As the RGB quantum dot fluorescent powder layer is formed by sequentially arranging the red light quantum dot fluorescent screen, the green light quantum dot fluorescent screen and the blue light quantum dot fluorescent screen, color saturation of the backlight module is improved, and the problem of reabsorption of RGB quantum dot fluorescent powder is solved.
Owner:SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD

Litopenaeus vannamei compound feed special for winter shed cultivation and preparation method for feed

The invention relates to aquaculture feed, in particular to litopenaeus vannamei compound feed special for winter shed cultivation and a preparation method of the feed. The feed comprises a protein source raw material, a fat source raw material, a sugar source raw material, an antioxidant, a phagostimulant, composite vitamin and composite mineral salt. The invention provides the litopenaeus vannamei compound feed special for winter shed cultivation and the preparation method of the feed, with the advantages of high survival rate, high growth speed, high stability in water, high ingestion speed, convenience for use and low environmental pollution, so as to solve the problems of low growth speed, serious disease, low survival rate and the like of the litopenaeus vannamei during winter shed cultivation at low temperature and promote the healthy development of the litopenaeus vannamei cultivation industry.
Owner:FUJIAN HAID FEEDS +4

Methods and systems for condensation control

ActiveUS20150047374A1Defrosting effective and fasterGreat capacity to absorbAir-treating devicesVehicle heating/cooling devicesEngineeringChiller
Methods and systems are provided for reducing condensate accumulation at a charge air cooler (CAC) during cold ambient conditions. During defrosting conditions, an air conditioner may be operated to dehumidify a cabin space while heat is rejected into a cooling circuit. Warm coolant may be directed to a CAC bypassing a radiator to expedite CAC heating.
Owner:FORD GLOBAL TECH LLC

Glass composition for absorbing ultraviolet ray and infrared ray and its application

The invention relates to a glass composition for absorbing ultraviolet ray and infrared ray, which comprises a glass basic composition (weight ratio): 60-75% of SiO2, 8-20% of Na2O, 3-12% of CaO, 0.1-5% of Al2O3, 2-5% of MgO; 0.02-7% of K2O, 0.1-5% of BaO and 0.01-0.4% of SO3; and a glass body coloring coordination part for absorbing ultraviolet ray and infrared ray: 0.22-1.35% of Fe2O3, 0.001-0.8% of ZrO2+HfO2, 0-0.5% of Cl, 0-2% of B2O3, 0.01-0.8% of TiO2, 0.001-0.06% of CuO; 0-2.0% of Br, 0-0.02% of MnO, 0-2.0% of F, 0.001-0.5% of Sr and 0.005-2.2% of CeO2. The redox ratio of Fe2O3 in the glass composition is 0.4-0.8. Rare metals and rare earth metal compound with a certain amount can be added in the glass composition, limitation of the current heat insulation glass can be breakthrough, chemical oxygen demand of the raw materials and the redox ratio can be controlled in a reasonable mode, obstruction to ultraviolet ray, infrared ray and total energy can be effectively realized, visible light transmittance is simultaneously increased, so that heat insulation glass capable of strongly absorbing the ultraviolet ray and near infrared can be obtained.
Owner:何开生

Impurifying ecological bank-protection combined system

InactiveCN1936190AGood interception and purification effectEfficient retentionCoastlines protectionRainfall runoffBrick
The invention relates to revetment combination system that has cutoff purifying function to the river rainfall runoff surface contaminating material. It sets non-sand concrete curbstone at the intersection of road and bank slope, a catch water channel is set at one side of intersection road, where coarse sand bedding is paved. Crushed stones are filled in the channel, and the top of channel is sealed by non-sand concrete. On the band slope toward water side paves coarse sand, crushed stone of different thickness, and ecology brick. Cement laid stone masonry breast wall is set at basal slope, and growing plant at the bank slope. It increases the residence time for runoff in the system and takes purification to it.
Owner:HOHAI UNIV

Litopenaeus vannamei compound feed

The invention relates to a lLitopenaeus vannamei compound feed and belongs to the field of shrimp feed and preparation methods thereof. According to weight percentage, the compound feed contains 10-15percent of fish meal, 18-22 percent of fermented soybean meal, 8-12 percent of peanut cake, 2-6 percent of corn protein powder, 8-10 percent of soya bean meal, 20-25 percent of high gluten flour, 2-6percent of shrimp shell powder, 1-3 percent of selenium-enriched yeast, 1-3 percent of bentonite, 2-4 percent of squid extract, 2-4 percent of kelp powder, 0.5-1.5 percent of monocalcium phosphate, 0.5-1.5 percent of fish oil and 2-4 percent of premix. The compound feed can substitute for the present prawn compound feed and be used for the artificial breeding of litopenaeus vannamei. The compoundfeed is good in palatability, easy to digest and absorb and nice in the stability in water, reduces feed coefficient and cost, nitrogen and phosphorus emission and pollution to the water body environment of culture zones, and can promote the growth of prawn, with balanced nutrition.
Owner:ZHANJIANG HENGXING CORAL FEED

Preparation method for nanometer black titanium dioxide photocatalyst

The invention relates to a preparation method for a nanometer black titanium dioxide photocatalyst. The method takes trivalent titanium titanium trichloride and TiOCl as raw materials, takes sodium borohydride, ascorbic acid or hydrazine hydrate as a reducing agent, and employs a hydrothermal synthesis process for preparing the nanometer black titanium dioxide photocatalyst. By introducing Ti<3+> into the titanium dioxide photocatalyst and performing oxygen vacancy, absorption performance of a titanium dioxide material in ultraviolet light region, visible light region and infrared light region is enhanced, and by adjusting the usage amount of the reducing agent, the color of the nanometer titanium dioxide photocatalyst is adjusted.
Owner:XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI

Biological tissue inspection method and system

A method and system for inspecting biological tissue that has no applied coatings or treatments to improve reflectivity comprises an optical detection system with an exposed surface for inspection by an optical detection system; and a laser for exciting an ultrasonic wave within the tissue, which wave propagates within the tissue at least near the surface. The optical detection system includes: a laser to emit a pulsed detection laser beam onto the surface at a detection spot, the pulsed laser beam having a wavelength at which there is large scattering and little absorption by the tissue, and a pulse duration is chosen to correspond with ultrasonic propagation times associated with a range of depths of the scan, whereby the fluence of the detection laser is not applied unless ultrasonic information regarding a given depth is being obtained; and large étendue collection optics for collecting reflected and backscattered light from the detection spot; and a demodulator to extract information from the ultrasonic wave from the collected light.
Owner:NAT RES COUNCIL OF CANADA

Environmentally-friendly paper making and pulping technique and system with high yield

The application of the invention provides an environmentally-friendly paper making and pulping technique with high yield, which comprises a raw material preprocessing stage, a physical fibrillation impregnating processing stage, an impregnating, steaming and bleaching three-section integrated pulping stage and a thickening and dewatering processing stage. An environmentally-friendly paper making and pulping system with high yield realizing the pulping technique comprises a stock cutter, a hammering and fibrillation screening dust remover, a washing dust remover, dewatering conveying equipment, a spiral steaming conveyor, a crashing, extruding and impregnating machine, a stirring and impregnating cabin, a pump pipe and a discharge pipe of a high-enriched steaming, bleaching and pulping all-in-one machine, wherein the pump pipe is connected to the high-enriched steaming bleaching pulping all-in-one machine; the discharge pipe of the high-enriched steaming, bleaching and pulping all-in-one machine is connected to a pulp cabin; the pump pipe of the pulp cabin is connected with a thickening and dewatering machine; the thickening and dewatering machine is output to the high-enriched pulping machine; the output of the high-enriched pulping machine is connected with a screening purifier and a thickening and squeezing machine in sequence. In the invention, the problems of high pollution, high energy consumption, serious shortage of paper making raw material and the like in present pulping and paper making industry can be solved fundamentally; rich plant fiber in the nature can be used, and the technical purposes of efficient bleaching, high yield, no black liquor and low energy consumption can be realized.
Owner:李刚荣 +1

Molten salt for chemical strengthening of glass and application process thereof

The invention provides molten salt for chemical strengthening of glass. The molten salt comprises main salt KNO3 and auxiliary salts Al2O3, KCl, K2CO3 and KOH mixed proportionally. The invention also provides a process of applying the molten salt to the chemical strengthening of common Na-Ca-Si flat glass. The technological conditions of ion exchange reaction temperature, time and the like are controlled, and a specific acid corrosion strengthening process is introduced before the ion exchange reaction to be combined with the ion exchange reaction to realize chemical strengthening. When the molten salt and the strengthening process of the invention are applied to the chemical strengthening of the common Na-Ca-Si flat glass, the compressive strength, the compression elastic modulus, the bending strength and the bending elastic modulus of the glass are greatly improved, the chemical strengthening time is remarkably shortened, the chemical strengthening temperature is reduced, the energy consumption for production is obviously reduced and the efficiency is increased.
Owner:ZHEJIANG UNIV

Saline-alkali soil conditioner and preparation method thereof

InactiveCN101659867AMiao QiSeedlings turn green quicklyAgriculture tools and machinesOther chemical processesChemistryAlkali soil
The invention relates to a saline-alkali soil conditioner and a preparation method thereof. The saline-alkali soil conditioner is constituted by glacial acetic acid, citric acid, oxalic acid and tap water. The preparation method comprises the following steps: weighing the tap water, citric acid and oxalic acid according to weight ratio and placing in a reaction kettle; starting stirring, warming up to 40 DEG C to 60 DEG C for 0.5 hour to 1 hour; weighing the glacial acetic acid according to weight ratio and placing in the reaction kettle; stirring, warming up to 50 DEG C to 60 DEG C for 0.5 hour to 1 hour; cooling down to 25 DEG C to 40 DEG C; carrying out measurement packaging after the samplings pass the inspection to obtain the finished product of saline-alkali soil conditioner. The saline-alkali soil conditioner in the invention is simple in manufacturing process, low in raw materials and production cost, and can realize the improvement of soil physicochemical property, inhibit theascending of saline matter and neutralizing the alkalinity of the soil.
Owner:路振国

Polyvinyl alcohol, preparation method and applications

The invention provides polyvinyl alcohol. The polyvinyl alcohol is characterized in that the average polymerization degree is no higher than 500, the blocking degree is 0.50-0.85, and the alcoholysis degree is 35mol%-65mol%. The provided polyvinyl alcohol with a low polymerization degree, a low alcoholysis degree and a low viscosity has especially excellent viscosity stability. When the provided polyvinyl alcohol is used for a vinyl polymer suspension polymerization reaction, the monomer droplet disperse dispersion capability is strong, the dispersion stability is good, and the provided polyvinyl alcohol is free from vinyl polymer polymerization conditions. The pores of the prepared vinyl polymers are distributed uniformly and the porosity is high. The removal performance of reaction residual monomers is good, the absorption capability of added plasticizers is excellent during the subsequent processing process, the processing properties are excellent, plasticizing time can be shortened, and the fisheye number is decreased.
Owner:CHINA PETROCHEMICAL CORP +1

Method for non-aqueous phase wet oxidation of hydrogen sulfide

The invention relates to a new method for non-aqueous phase wet oxidation of hydrogen sulfide by taking iron-based ironic liquid as an oxidant. The iron-based ironic liquid is highly hydrophobic liquid which is insoluble in water, and can effectively absorb hydrogen sulfide gas and quickly and efficiently oxidize the hydrogen sulfide gas into elemental sulfur. After centrifugation separation or filtering separation is performed on the sulfur, the iron-based ironic liquid is recycled after being oxidized by air or pure oxygen. Water produced in the recycling process can be automatically separated from the hydrophobic iron-based ironic liquid to prevent dilution of the iron-based ironic liquid by the water. The pH of a reaction system is not required to be adjusted in the process of oxidizing the hydrogen sulfide by using the iron-based ironic liquid, and the acidic characteristic of the iron-based ironic liquid prevents the generation of a sulfur-containing byproduct in the reaction process. Over 90 percent hydrogen sulfide removal efficiency can be achieved and secondary pollution is not caused during the non-aqueous phase wet oxidation of the hydrogen sulfide by adjusting the circulating flow of the ironic liquid and the flow of the hydrogen sulfide gas by an absorption-oxidation-separation-regeneration combined process.
Owner:BEIJING UNIV OF CHEM TECH
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