33results about How to "Improve ion exchange efficiency" patented technology

The invention provides a molecular sieve ion exchange method. The method comprises the following steps: a bipolar membrane electrodialysis step comprising conducting bipolar membrane electrodialysis on an aqueous solution containing ions to obtain an acid liquid; an ion exchange step comprising enabling a molecular sieve and the acid liquid to be in contact with each other to implement ion exchange so as to obtain a molecular sieve slurry subjected to the iron exchange; a solid liquid separation step comprising conducting the solid liquid separation on the molecular sieve slurry subjected to the iron exchange to obtain a liquid phase and a solid phase, and conducting solid liquid separation after the pH of the liquid phase is regulated to be more than 8 to obtain a processing liquid; a step of circulating the processing liquid to the bipolar membrane electrodialysis step to replace at least part of the aqueous solution containing ions, and then conducting bipolar membrane electrodialysis to obtain an alkaline liquid and an acid liquid. In the method provided by the invention, the power consumption of the bipolar membrane electrodialysis step is low. In addition, the method can acquire higher ion exchange efficiency.

A cooling device (10) for a functional system, in particular a fuel cell system (12) for a motor vehicle is disclosed. The cooling device (10) includes a conduit system (14, 22) for a cooling fluid flow connected to the functional system (12) for cooling. A container (20) of the cooling device (10) for the cooling fluid is fluidically connected to the conduit system (14, 22). A treatment unit, in particular an ion exchanger (24), for treating the cooling fluid is fluidically connected to the conduit system (14, 22). The container (20) includes a receptacle chamber to receive the treatment unit (24) and / or an ion exchanger (24) disposed so as to stand upright in the container (20).

A comprehensive utilization process of a glutamic acid crystal mother liquid comprises the following steps: one, leading the glutamic acid crystal mother liquid into a membrane separation system, allowing solid particles, thalli, proteins, polysaccharides and a colloid in the mother liquid to be intercepted by a membrane, and making glutamic acid left in a membrane filtrate; and allowing the membrane filtrate to go to a next step for treatment; two, leading the membrane filtrate into an ion exchange system, adsorbing glutamic acid by an ion exchange resin, when the content of glutamic acid in an ion exchange tail liquid is not more than 0.2%, stopping column-loading, adding an eluting agent, eluting, allowing glutamic acid to go into the eluate, collecting the eluate, and recycling glutamic acid from the eluate. The membrane separation technology and the ion exchange technology are combined, recycling of glutamic acid from the crystal mother liquid is realized, at the same time, a protein feed is prepared from the thalli and the proteins intercepted by the membrane, an organic fertilizer is prepared from the ion exchange tail liquid through slurry-spraying granulation, the whole process allows useful substances in the crystal mother liquid to be totally recycled, comprehensive utilization of the resources is thoroughly achieved, waste is turned into treasure, and significant economic benefits are achieved.

The invention provides an ion exchange method for a solid substance with exchangeable ions, which includes the following steps: bipolar membrane electrodialysis: performing bipolar membrane electrodialysis to a water solution with ions, so as to obtain an acid liquor; ion exchange: performing ion exchanging to the contacted solid substance with exchangeable ions and the acid liquor, wherein ions capable of forming a water insoluble substance with OH<-> are contained in the exchangeable ions in the solid substance; solid-liquid separation: performing solid-liquid separation to slurry of the solid substance subjected to ion exchange, so as to obtain the solid phase and the liquid phase; performing solid-liquid separation after the pH value of the liquid phase is adjusted above 8 and obtaining a conditioning fluid; circulating the conditioning fluid to the step of bipolar membrane electrodialysis, substituting at least part of the water solution with ions with the conditioning fluid for bipolar membrane electrodialysis. In the method provided by the invention, power consumption for bipolar membrane electrodialysis is low, and higher ion exchange efficiency is obtained through the method.

The invention relates to an antibacterial varnish for a color plate and a color plate production process. The antibacterial varnish comprises the following components in percentage by weight: 15-40% of polyester resin, 10-30% of methanol modified melamine formaldehyde resin, 0-15% of propylene glycol methyl ether acetate, 0-15% of 2-methyl propanol acetate, 0-10% of solvent naphtha, 0-5% of cyclohexanone, 0-5% of xylene, 1-10% of octanol and 1-2% of nano silver-loaded organic silicon. The color plate production process comprises the following steps: S1, preparing materials (including S1-1 substrate uncoiling and S1-2 primer, back paint, middle paint, printing ink and antibacterial varnish preparation); S2, carrying out a substrate pretreatment; S3, performing primer coating; S4, carrying out back paint coating; S5, carrying out middle paint coating; S6, carrying out ink printing; and S7, carrying out varnish coating. The prepared antibacterial varnish has a good antibacterial performance, so that a color steel plate prepared from the antibacterial varnish has a good antibacterial performance.

The invention discloses a lithium battery structure and the electrode layer thereof. The lithium battery structure includes two battery units with the two negative active material layers being disposed in face-to-face arrangement. The negative current collector includes a conductive substrate with a plurality of through holes and an isolation layer. The isolation layer is covered on one surface of the conductive substrate and extended along the through holes to another surface to cover the edge of the openings of the through holes. It can be effectively avoided the lithium dendrites depositing near the openings of the through holes on the conductive substrate. Also, the face-to-face arrangement of the negative active material layers is effectively control the locations of the plated lithium dendrites. Therefore, the safety of the battery and the cycle life of the battery is greatly improved.

The invention provides a preparation method of glass ceramic, the preparation method comprises: carrying out a crystallization treatment on precursor glass to prepare a glass ceramic prefabricated part; mixing the glass ceramic prefabricated part with first fused salt, and carrying out first chemical tempering; the first molten salt comprises at least one of sodium nitrate, potassium nitrate and lithium nitrate; the mass ratio of sodium nitrate in the first molten salt is a; the temperature of the first-time chemical tempering is T1 DEG C, and the time of the first-time chemical tempering is t1 hours; the glass transition point temperature of the glass ceramic prefabricated part is Tg DEG C; 10% < = a < 50%, and 10t1 + T1 = (0.75 Tg-80a)-(0.83 Tg-100a); or 50% < = a < = 100%, and 10t1 + T1 = (0.75 Tg-50a)-(0.83 Tg-80a).

The invention discloses zinc phosphorus aluminum silicate glass with a high strain point, fast ion exchange function and weak-acid resistance. The glass is prepared from the following ingredients in percentage by mass: 56 to 65 percent of SiO2, 17 to 22 percent of Al2O3, 10 to 16 percent of Na2O, 0 to 1 percent of K2O, 0 to 1 percent of Li2O, 0 to 5 percent of P2O5, 0 to 2 percent of B2O3, 0 to 0.5 percent of MgO, 1 to 8 percent of ZnO, 0 to 1 percent of TiO2, 0 to 0.5 percent of SrO, 0 to 0.5 percent of SnO2 and 0 to 0.5 percent of CeO2, wherein the sum of all ingredients is 100 percent; thestrain point temperature of the glass is higher than or equal to 580 DEG C; the compression stress value is greater than or equal to 900 MPa; the compression stress layer is greater than or equal to 35 mu m. The glass composition is optimized to obtain the glass with high compression stress value, high compression stress layer and weak-acid resistance.

The invention relates to the technical field of glass materials, and in particular relates to phosphorus-aluminum silicate glass with low cost and a high compressive stress layer, the phosphorus-aluminum silicate glass comprises 65-75% of SiO2, 8-16% of Al2O3, 11-18% of Na2O, 0-5% of K2O, 1-4% of P2O5, 0-3% of B2O3; 0-1% of ZnO and 0-0.4% of SnO2, (CaO + MgO + SrO + BaO) is less than or equal to 0.1%, the depth of the ion exchange layer of the reinforced glass is larger than or equal to 60 microns; and the mean line thermal expansion coefficient of the glass is less than 90 * 10 <-7 > / DEG C. After soaking for 6 hours in an oxalic acid solution at 60 DEG C, the weight loss rate of the unit area is less than or equal to 0.15mg / cm<3>, the glass adopts a high SiO2 component, ZnO, Li2O, SnO2 and other components are reduced, and the advantages of low cost and the high compressive stress layer are realized.

An ion exchanger includes an apparatus body having a lower filter and an upper filter. Ion exchange resin fills a space between the lower filter and the upper filter. A water supply port is provided at a lower position of the apparatus body, and a water discharge port is provided at an upper position of the apparatus body. An air container is provided at an upper position of the apparatus body, and an electric conductivity meter is provided in the air container at a position above the water discharge port.

The invention relates to a preparation method of a freeze-dried modified sepiolite mineral loaded Pd monatomic catalyst. According to the method, the sepiolite group minerals are treated by combining ultrasonic treatment with freeze drying, firstly, the sepiolite group minerals are preliminarily dispersed through ultrasonic treatment, then, the sepiolite group minerals are further unbundled in the freeze drying process, more ion exchange sites are exposed out of the sepiolite group minerals, meanwhile, zeolite water in pore channels is removed through freeze drying, and the sepiolite group minerals are separated from the pore channels. The pore channel of the mineral is dredged, so that the ion exchange efficiency of the mineral is improved, the Pd is promoted to enter the pore channel through ion exchange, and the size of the pore channel controls the growth size of the exchanged Pd in the reduction process, so that the Pd stably exists in a monatomic form. According to the invention, the defects of low atom utilization rate and poor selectivity and stability of the traditional Pd catalyst are overcome, and the defects of complex preparation and processing technology and high cost of a monatomic catalyst carrier are overcome.

The invention belongs to the technical field of chemical engineering, and particularly relates to a micro-nano fiber ion exchange resin deiodinating agent and a preparation method thereof. The preparation method comprises the following steps: carrying out electrostatic spinning on polylactic acid and polyvinyl alcohol to obtain micro-nano fibers, and carrying out graft modification on the micro-nano fibers by using a pre-radiation method; then mixing the modified micro-nano fibers with vinylbenzyl chloride and divinyl benzene to prepare resin, and then putting the resin into an ethanol solution of zirconium acetate and manganous nitrate tetrahydrate for standing to obtain the deiodinating agent. The micro-nano fiber ion exchange resin deiodinating agent provided by the invention has largeadsorption capacity and excellent selectivity.

The invention relates to a manufacturing process method of an all-solid-state lithium ion battery, and belongs to the technical field of new energy power energy storage batteries. The all-solid-state battery pole piece group of the all-solid-state lithium ion battery is composed of a positive current collector, a positive active material layer, a diaphragm, a negative active material layer and a negative current collector, and the positive active material layer is composed of positive active material particles, a solid electrolyte, conductive particles and a polymer adhesive. The large-particle positive active material particles wrap the small-particle solid electrolyte and the conductive particles, and are in contact with the small-particle solid electrolyte and the conductive particles through a high-molecular adhesive. Solid electrolyte and conductive particles are mixed and coated on the surfaces of active substance particles, so that the ion exchange efficiency is improved, and the problem of electron transmission channels is solved; and by adopting kneading and mixing processes and equipment thereof, the use cost of a solvent and the environmental problem are reduced, lithium ion transmission is not influenced, and the drying energy consumption is reduced. The metal lithium negative plate structure changes the growth direction of lithium dendrites in the charging and discharging process, and the safety of the battery is improved.

The invention relates to a preparation method of a sulfonated polystyrene @ mesoporous silica microsphere with an egg yolk-shell structure. The preparation method mainly comprises the following stepsof: (1) using styrene (St) monomers as a raw material, and preparing a monodisperse polystyrene microsphere with a uniform particle size by adopting a soap-free emulsion polymerization method; (2) preparing a phenyl-functionalized polystyrene @ mesoporous silica microsphere with a yolk-shell structure; and (3) sulfonating the phenyl-functionalized polystyrene @ mesoporous silica microsphere by using chlorosulfonic acid to obtain ion exchange resin with a sulfonic acid group-modified polystyrene sphere kernel surface and a sulfonic acid group-modified silica shell surface. The synthesized polymer microsphere has a high specific surface area and a large pore volume, and has certain mechanical strength and chemical stability at the same time, the preparation method is simple, and has mild conditions and simple post-treatment, and the ion exchange efficiency of ion exchange resin can be improved.

The invention discloses an ion exchange resin tank capable of improving isopropanol preparation efficiency, and relates to the field of isopropanol preparation devices, the ion exchange resin tank comprises a tank body, and ion exchange resin is arranged in the tank body; a liquid inlet pipe is fixedly arranged at the upper end of the tank body, and a liquid outlet pipe is fixedly arranged at the lower end; a liquid return outlet pipe is fixedly arranged at the lower end of the tank body, and a liquid return inlet pipe is fixedly arranged at the upper end; a liquid return pump for driving liquid in the liquid return outlet pipe to flow into the liquid return inlet pipe is connected between the liquid return outlet pipe and the liquid return inlet pipe; and the liquid return outlet pipe and the liquid return inlet pipe are communicated with the interior of the tank body. The liquid return pump inputs liquid at the lower end of the tank body to the upper end of the tank body through the liquid return inlet pipe, and the liquid at the upper end of the tank body flows downwards, so that the liquidity of the liquid in the tank body is improved, and an isopropanol raw material in the tank body is in full contact with ion exchange resin; therefore, the ion exchange efficiency between the isopropanol raw material and the ion exchange resin is improved, and the preparation efficiency of isopropanol is improved.

The invention provides ion exchange resin, and a preparation method and an application thereof. The ion exchange resin comprises an electrospun fiber film with an ion exchange group, and the fiber diameter of the electrospun fiber film is 150-250 nm; and the electrospun fiber film is a copolymer spun film. The fiber diameter of the ion exchange resin is controlled within the above range, and the pore diameter and the specific surface area of the ion exchange resin are effectively regulated, so the ion exchange efficiency of the ion exchange resin is improved. The preparation method adopts a copolymer spinning solution, the spinning process is smooth and is easy to implement, and optimized spinning process parameters are combined to continuously spin superfine fibers with a diameter of 150-250 nm.

An ion exchanger includes a housing, a tube member, and an ion exchange resin. The housing includes an inlet port and an outlet port. The tube member is arranged inside the housing. The ion exchange resin is arranged between the tube member and the housing. A first flow passage and a second flow passage are formed in the housing. The first flow passage is configured to cause the coolant that has flowed in through the inlet port to flow directly to the outlet port. The second flow passage is configured to cause the coolant that has flowed in through the inlet port and passed through the ion exchange resin to flow to the outlet port. The first flow passage and the second flow passage are formed to join together in a state of being oriented in a same direction toward the outlet port.