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76results about How to "Increased loading area" patented technology

Preparation method and application of molecular sieve/organic composite infiltration, vaporization and separation membrane

The invention belongs to the technical field of separation membranes, and relates to a preparation method and application of a molecular sieve / organic composite infiltration, vaporization and separation membrane. The preparation method comprises the following steps of: firstly adopting a hydrothermal method to prepare nano-level molecular sieve; putting the synthesized nano-level molecular sieve in a solvent, and dispersing the molecular sieve into uniform molecular sieve suspending liquid through ultrasound, wherein the mass fraction of the molecular sieve in the suspending liquid is 5-15%; uniformly coating the molecular sieve suspending liquid on an organic supporting body; drying the organic supporting body at the temperature of 20-60 DEG C to form a molecular sieve membrane; and repeating the coating for 2-4 times. Surface modification is performed on the organic supporting body by adopting methods such as plasma induction, silane coating and the like to modify the surface hydrophily. The method can be used for preparing a large-area molecular sieve / organic composite membrane; a prepared membrane can be assembled into a spirally coiled component; and the preparation method is beneficial for industrial magnification, and has a higher industrial application value. A better separation effect can be achieved when the prepared molecular sieve / organic composite membrane is used for the infiltration and vaporization of an organic water solution system.
Owner:CHANGZHOU UNIV +1

Honeycomb type low-temperature flue gas denitrification catalyst and preparing method

The invention discloses a honeycomb type low-temperature flue gas denitrification catalystpowder and a preparing method thereof.The honeycomb type low-temperature flue gas denitrification catalyst powder is prepared from, by mass, 3.0-5.0 parts of vanadium oxide, 3.5-5.1 parts of molybdenum oxide, 0.1-1.0 part of tungsten oxide, 0.1-3.0 parts of manganese oxide, 0.01-0.1 part of phosphorus oxide, 0.01-0.05 part of boric oxide, 0.1-1.0 part of copper oxide and 84.75-92.68 parts of titanium dioxide.The preparing method comprises the steps that firstly, an active component solution is prepared; secondly, a catalyst is loaded with an impregnation method; thirdly, the consistent honeycomb type catalyst is prepared through extruding forming.According to the honeycomb type low-temperature flue gas denitrification catalyst powder and the preparing method thereof, the activity and catalytic capability of the low-temperature flue gas denitrification catalyst are effectively improved, the denitrification efficiency can reach 38% at 120 DEG C and reaches 95.1% at 210 DEG C, high industrial application value is achieved, and the honeycomb type low-temperature flue gas denitrification catalyst can be widely applied to NH3 selective catalytic reaction of nitric oxide in flue gas.
Owner:东营信拓汽车消声器有限公司

Corrugation membrane, spiral membrane component thereof and filtering method

The invention discloses a corrugation membrane, a spiral membrane component thereof and a filtering method, and belongs to the technical field of tap water deep purification or sewage disposal. A non-woven fabric supporting layer of the corrugation membrane is connected with the face of the corrugation membrane. A corrugation radius is arranged on the side face of the corrugation membrane. The lower portion of the corrugation membrane is connected with a water through channel fabric. The lower portion of the water through channel fabric is connected with a flat sheet membrane. Wave troughs of corrugations at the upper portion of the corrugation membrane are water inlet channels. Corrugation holes formed by the water through channel fabric, the flat sheet membrane structure and the corrugation membrane are water through channels. The water through channel fabric is connected with a glue line position. The glue line position wraps the membrane and then is connected with a water through central collecting pipe, the glue sealing position wraps the water through central collecting pipe, and the water through channel fabric, the flat sheet membrane, the water inlet channels and the corrugation membrane wrap the glue sealing position. By adopting the corrugation membrane, the surface of the membrane is machined into corrugations, the area of the corrugation membrane is 1.2-1.5 times that of an ordinary flat sheet membrane, and the filling area of a device can be increased at least by 15-20% under the same space.
Owner:BEIJING ORIGIN WATER FILM TECH

Ultrahigh-pressure sodium hypochlorite generator and preparation method of sodium chlorate

PendingCN112281179AReduce layout spacingIncrease mass transfer efficiency and reaction pathwaysCellsElectrode shape/formsUltra high pressureSodium hypochlorite
Disclosed are an ultrahigh-pressure sodium hypochlorite generator and a preparation method of sodium chlorate. The ultrahigh-pressure sodium hypochlorite generator comprises a shell with a water inletand a water outlet, a plurality of cathode pressing plates and a plurality of anode plates which are sequentially stacked at intervals are arranged in the shell, and the cathode pressing plates and the anode plates are provided with center holes. A center shaft penetrates through the center holes to position and press the cathode pressing plates and the anode plates to form a disc type structureand block the cathode pressing plates and the anode plates at the positions of the center holes. Strong brine enters from the water inlet, sequentially flows back between the cathode pressing plates and the anode plates to form a passage and flows out from the water outlet. The reaction mass transfer efficiency and the reaction path are increased by utilizing the disc type design, and the reactionefficiency of sodium hypochlorite production is improved; the electrodes adopt a cathode and anode staggered lamination mode, so that the reaction efficiency is enhanced; and the reactor shell and the internal electrodes adopt a high-pressure sealing mode, so that the dissolution rate of chlorine can be effectively improved, and chlorine leakage is avoided. The method has good sodium hypochloriteproduction capacity, and can significantly improve the concentration of sodium hypochlorite in water.
Owner:SHAANXI UNIV OF SCI & TECH

BAF (biological aerated filter), construction method thereof and method for treating water by using BAF constructed with method

The invention relates to a construction method of a BAF (biological aerated filter), the BAF and a method for treating water by using the BAF. The construction method comprises the steps as follows: backwashing water of the BAF is collected and concentrated at the low temperature, then, the concentrated solution is subjected to primary low-temperature acclimation culture, and a proliferation culture solution is obtained; the proliferation culture solution is added to the BAF for airtight aeration treatment; then, source water is introduced into the BAF for secondary low-temperature acclimationculture. In the constructed BAF, the ecological niche advantage of low-temperature nitrifying bacteria in the system is outstanding, and ammonia-nitrogen pollution to the source water at the low temperature stage is effectively controlled. The BAF is stable in operation, low in energy consumption, applicable to both low temperature stage and normal temperature stage and high in ammonia nitrogen removal rate; the BAF is applicable to treatment of source water with ammonia and nitrogen as main pollutants at the low temperature and the treatment safety of drinking source water is guaranteed. Theproblem of high difficulty in removing ammonia and nitrogen with a drinking water treatment process in winter, particularly at the low temperature in the north is solved.
Owner:北京市自来水集团有限责任公司技术研究院 +1

Disc-type electrocatalytic water treatment device

Provided is a disc-type electrocatalytic water treatment device. The disc-type electrocatalytic water treatment device comprises a casing with a water inlet and a water outlet, wherein a plurality ofcathode pressure pressing plates and anode plates which are sequentially stacked in a staggered mode are arranged in the casing, central holes are formed in the cathode pressing plates and anode plates, and a central shaft penetrates through the central holes to position and press the cathode pressing plates and the anode plates so as to form a disc-type structure and isolate the cathode pressingplates and the anode plates at the central holes; and when to-be-treated wastewater is introduced from the water inlet, the wastewater sequentially flows there and back among the cathode pressing plates and the anode plates so as to form a passage and flow out of the water outlet. The disc-type design is utilized to increase the reaction mass transfer efficiency and the reaction path, and the reaction efficiency of electrocatalytic oxidation is improved; since a cathode-anode staggered stacking mode is adopted by electrocatalytic electrodes, the electrode placement density is increased, and thus the reaction efficiency is increased; and it is shown by results of salt-containing industrial wastewater treatment that the method has good electrocatalytic oxidation ability, the removal efficiency of chroma, ammonia nitrogen and COD in high-salt wastewater can be improved significantly, and effluent can reach the comprehensive first-level discharge standard of the wastewater.
Owner:陕西镐丰京诚环境科技有限公司

Hydrogen production reactor using honeycomb SiC ceramic as catalyst carrier

The invention discloses a hydrogen production reactor taking honeycomb SiC ceramic as a catalyst carrier. The reactor comprises an upper cover plate, a lower cover plate, an evaporation plate, a firstcatalytic combustion plate, a second catalytic combustion plate, a reforming chamber upper cover plate, a methanol steam reforming plate and a reforming chamber lower cover plate. Bolts pass througheach plate and are tightly connected; the upper and lower cover plates are provided with reactant inlet and outlet pipes; the evaporation plate is provided with a serpentine flow passage as an evaporation chamber; the first and second catalytic combustion plates are provided with parallelogram grooves as combustion chambers; the reforming chamber upper cover plate and the methanol steam reformingplate are provided with rounded rectangular through grooves, wherein the honeycomb SiC ceramics are arranged; reactants alternately pass through each plate and flow into corresponding cavities/groovesto realize hydrogen production reaction. The hydrogen production reactor can improve the orientation and flow uniformity of fluid flow, has the characteristics of high thermal conductivity, good thermal stability, stable chemical performance, large specific surface area and the like, improves the mass transfer and heat transfer performance in the reactor, reduces the pressure loss in the reactor,and enhances the loading capacity of a catalyst.
Owner:ZHEJIANG UNIV

Hollow fiber zeolite membrane assembly and technology thereof

The invention relates to a hollow fiber zeolite membrane assembly and an organic solvent pervaporation and dehydration technology thereof. The hollow fiber zeolite membrane assembly comprises a hollow fiber zeolite membrane component, a hole plate, a shell, a clamping sleeve, a socket and a sealing end. The invention also provides the organic solvent pervaporation and dehydration technology utilizing the hollow fiber zeolite membrane assembly. An organic solvent takes a gas state or a liquid state form to enter the membrane assembly through the inlet of the organic solvent, permeating component permeates through the hollow fiber zeolite membrane so as to shift through a vacuumizing connector, the organic solvent after dehydration flows out the assembly through the outlet of the organic solvent, a heat transferring medium gets in and out a membrane module membrane assembly through the inlet and outlet of the heat transferring medium, the operation temperature in the hollow fiber zeolite membrane assembly is 30-150 DGE C, and the operating pressure is 0-0.3Mpa. The hollow fiber zeolite membrane assembly provided by the invention adopts building block design, the connection and assembly of the assembly are simplified, the sealing problem of the hollow fiber zeolite membrane in an application process is solved, and the industrialized application of the hollow fiber zeolite membrane is facilitated.
Owner:NANJING UNIV OF TECH +1

Self-supporting composite material as well as preparation method and application thereof

The invention belongs to the technical field of electro-catalysis, and particularly relates to a self-supporting composite material and a preparation method and application thereof. The invention provides a self-supporting composite material. The self-supporting composite material comprises a foam titanium carrier, titanium dioxide nanorods vertically growing on the surface of the foam titanium carrier and ruthenium nanoparticles loaded on the surfaces of the titanium dioxide nanorods, the top ends of the titanium dioxide nanorods are in a pyramid shape, and the titanium dioxide nanorods are distributed on the surface of the foam titanium carrier in an array mode. According to the invention, the titanium dioxide nanorods have good stability under the acidic condition, and meanwhile, the stability of the ruthenium nanoparticles can be improved due to the metal-carrier interaction (SMSI) between the titanium dioxide nanorods and the ruthenium nanoparticles. In the invention, the top ends of the titanium dioxide nanorods are pyramid-shaped, and the loading area of the ruthenium nanoparticles is increased, so that the exposure of active sites of the ruthenium nanoparticles is improved, and the catalytic activity of the self-supporting composite material is further improved.
Owner:TSINGHUA UNIV

Thin-wall ceramic membrane tube applied to membrane absorption process, membrane adsorption method and application thereof

The invention relates to a thin-wall ceramic membrane tube applied to a membrane absorption process, a membrane adsorption method and application thereof, and belongs to the technical field of membrane adsorption. The thin-wall ceramic membrane tube comprises a tube cavity, wherein the tube cavity is formed by a tube wall and the inner side of the tube wall; the equivalent diameter range of the outer wall section of the membrane tube is 4-20mm, and the thickness range of the tube wall is smaller than 3mm; the inner side of the tube cavity is also provided with at least two gaseous conductance porous material sheets which are arranged along the tube diameter direction of the membrane tube; and on the section of the tube cavity, one end of each gaseous conductance porous material sheet is arranged on the inner wall of the membrane tube, and the other ends of the gaseous conductance porous material sheets are mutually in lap joint. The thin-wall ceramic membrane tube provided by the invention is high in mass transfer efficiency, an adsorption effect is greatly improved, meanwhile, the thin-wall ceramic membrane tube has a large filling area and simultaneously can keep good mechanical strength, and equipment investment cost is lowered.
Owner:JIANGSU JIUWU HITECH
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