16results about How to "Good regeneration performance" patented technology

The present application provides a kind of porous poly-L-lactic acid microspheres, and its preparation method and injection preparation comprising porous poly-L-lactic acid microspheres, the porous poly-L-lactic acid microspheres are prepared by emulsification-solvent evaporation method from first component, second component and optional auxiliary component, wherein the first component is poly-L-lactic acid, the second component is sodium carboxymethyl cellulose, the content of the first component is 98%-99.9% of the total mass of the first component and the second component, the content of the second component is 0.1%-2% of the total mass of the first component and the second component, and the porous poly-L-lactic acid microspheres have topological morphology.

The application discloses a polyacid zeolite imidazolate framework loaded monatomic catalyst and a preparation method and application thereof, and belongs to the technical field of catalysts. The preparation method of the catalyst is as follows: (1) preparing a zeolite imidazolate framework material; (2) mixing the dried zeolite imidazolate framework material and a metal salt in a solvent and stirring; then adding a heteropoly acid, controlling the pH in the system to be 5-7, and performing a solvothermal reaction under the condition of 80-120 DEG C; after the reaction is completed, cooling and centrifugal separation are performed to obtain a precipitate; and (3) performing calcination treatment on the precipitate to obtain the polyacid zeolite imidazolate framework loaded monatomic catalyst. The polyacid zeolite imidazolate framework loaded monatomic catalyst prepared by the method has high catalytic activity, high selectivity and good cycle stability, and has a good application prospect in acetyl propionate esterification reaction.

This invention belongs to the field of water softening and sterilization technology, and discloses an ion-selective adsorption electrode, a micro-electric field adsorption system, and their application in water softening and sterilization / algae removal. An ion-selective adsorption electrode comprises polypolycarboxylate ion exchange fibers, activated carbon, a conductive agent, and a binder, wherein the mass percentage of the polypolycarboxylate ion exchange fibers is 5-20%. This invention uses CCEF-modified activated carbon as the cathode, and at the optimal doping level, it effectively removes Ca... 2+ and Mg 2+ The selectivity coefficients were 15.0 and 13.5, respectively, for Ca 2+ The electroadsorption capacity of the electrode is 311 μmol / g, which is much higher than that of the AC electrode. After 50 cycles of stability testing, the Ca... 2+ The electroadsorption capacity remained above 85%, demonstrating good regeneration ability. Activated carbon modified with nano-silver was used as the anode, and under electric field enhancement, the inhibition rates against bacteria and microalgae reached over 99% and 90%, respectively, exhibiting excellent antimicrobial contamination capabilities.

The present application belongs to the technical field of vehicle engineering, and particularly relates to a particle trap regeneration method, device, storage medium and controller; through reversing the installation of the particle trap and interfacing the rotating purging component, the regeneration of the trap is realized on the engine tail gas pipeline; wherein, in order to improve the regeneration effect, a cyclic or intermittent variable working condition control process can be introduced; through setting the first type of working condition and / or the second type of working condition and switching, the pulsating tail gas output is introduced; in the process, high load and high speed and low load and low speed working conditions can be respectively used to realize different excitation states of the tail gas; in addition, the preset lean burn working condition and high temperature tail gas configuration can be combined to further improve the regeneration effect; at the same time, the differential pressure detection closed loop of the two ends of the trap can be introduced to optimize the monitoring ability of the regeneration process, timely end the regeneration process, and improve the operation efficiency; the application of the related products will be helpful to reduce the emission of the internal combustion engine and improve the fuel consumption.

The invention discloses an adsorbent material for perfluorinated compounds in water and a preparation method and application thereof, and belongs to the technical field of water treatment materials, 1, 3-diamino-2-hydroxypropane, m-tribenzoic acid and 3, 3 '-(1, 4-phenylene) bis [2-propiolic acid] are used as raw materials to react to obtain a polyamide polymer, and finally the polyamide polymer is hydrolyzed to remove the m-tribenzoic acid to obtain the perfluorinated compounds in the water. The polymer adsorbent material is prepared; the adsorbent material for the perfluorinated compounds in the water, prepared by the invention, has a relatively large specific surface area and adsorption capacity, can be used for adsorbing the perfluorinated compounds in the water, has relatively strong mechanical stability, long service life and regeneration capacity, and has a good application prospect in the aspect of removing the perfluorinated compounds in the water.

The application discloses a novel selective adsorption of primary amino-containing dye magnetic bio-based adsorbent, and a preparation method thereof, which comprises the following steps: reacting sodium lignosulfonate, carboxylated chitosan, sodium alginate, magnetic particles, epichlorohydrin and polyethylene imine. The raw material containing rich carboxyl, sulfonic acid group and imine group is added to facilitate the coordination of metal ions, more active sites are added, the new design idea of adding the pore-forming agent polyethylene glycol to increase the specific surface area of the adsorbent microspheres, and the composite preparation of carboxylated chitosan (CCS), sodium lignosulfonate (LS), sodium alginate (SA) and magnetic particles (Fe3O4) and the modification of polyethylene imine (PEI) are realized through the one-pot method, so as to obtain a magnetic bio-based adsorbent which can selectively adsorb primary amine-containing dyes. The removal rate of the adsorbent SA-CCS-LS@Fe3O4 to the primary amine-containing dyes reaches more than 98%, and the adsorbent can be recycled.

The utility model discloses a built-in heating type dryer and an automobile air supply unit, which comprise a shell, the interior of the shell is filled with a drying agent, the shell is provided with an air inlet and an air outlet, the shell is also provided with a built-in heating assembly inserted into the drying agent, and the air inlet and the air outlet are communicated with the built-in heating assembly. A heat dissipation component installed outside the built-in heating assembly is arranged in the drying agent, the heat dissipation component makes full contact with the drying agent, the drying agent in the shell can be fully heated by arranging the built-in heating assembly and the heat dissipation component, heat is dissipated into the drying agent through the heat dissipation component, particles of the drying agent are heated, and the drying effect is improved. Water absorbed by the drying agent particles is separated from the particles due to high temperature and is discharged out of the system through gas circulation, permanent reuse of the drying agent is achieved, and the regeneration effect is good.

The present application belongs to the cross field of water treatment technology field and waste shrimp shell resource utilization technology field, and specifically relates to a waste shrimp shell derived chitosan-based iron-carbon composite hydrogel as well as a preparation method and application thereof. The present application carries out overall design around the preparation of chitosan and the forming process of network structure, adopts a betaine-acetic acid low eutectic solvent system to extract chitin in waste shrimp shells, and further converts to obtain chitosan. Meanwhile, carbon nanotubes and nano-ferroferric oxide are introduced into the chitosan system to synergistically regulate the material from two aspects of skeleton support and function supplement. The hydrogel microspheres have good antibiotic adsorption and degradation capacity, and have high application prospect in wastewater treatment in industries such as aquaculture, pharmaceuticals and agriculture.

The application discloses a kind of anti-sulfur water Pt-based bimetallic CO oxidation catalyst and preparation method thereof, belong to environmental catalytic material technical field.The catalyst prepared by the application uses titanium dioxide as carrier, and adopts impregnation method to load noble metal platinum and adjuvant molybdenum to form bimetallic active component.The catalyst utilizes the regulation effect of Mo species to Pt electronic structure and the competitive adsorption mechanism of sulfur species, effectively solves the problem that traditional single platinum-based catalyst is easily poisoned and inactivated under sulfur-containing and water-containing conditions.Experiments show that the catalyst can still maintain very high CO conversion rate for a long time under harsh working conditions containing high concentration of sulfur dioxide and water vapor, and has excellent anti-sulfur regeneration performance.The catalyst preparation process is simple, and the stability is good, which is suitable for efficient elimination of carbon monoxide in industrial waste gas and motor vehicle exhaust.

The invention belongs to the field of biomedical materials and periodontal tissue engineering, and relates to an injectable anti-oxidation mechanical buffer porous hydrogel microsphere delivery odontogenic stem cell system as well as a preparation method and application of the injectable anti-oxidation mechanical buffer porous hydrogel microsphere delivery odontogenic stem cell system. The microsphere is constructed by adopting a dynamic bond-covalent bond dual-network structure, has injectability, stress relaxation and mechanical support properties, and introduces a polyphenol functional group to remove active oxygen and regulate and control an inflammatory microenvironment. The communicated porous microspheres with controllable particle sizes are obtained through emulsification balling and freezing pore-forming processes and are used for loading the odontogenic stem cells to form a regeneration delivery system. The system can improve the dryness and osteogenic differentiation capacity of the odontogenic stem cells, reduce oxidative stress and inflammatory response, promote alveolar bone defect repair and bone mass recovery under the conditions of inflammation and orthodontic pressure stress, and has good biocompatibility and application prospects.

This invention belongs to the field of environmental industrial water treatment technology, and discloses a modified lignin-attapulgite composite material, its preparation method, and its application. Method: Activated enzymatically hydrolyzed lignin is covalently grafted with a thiol reagent via a nucleophilic substitution reaction under inert gas protection, alkaline conditions, a catalyst, and a polar aprotic solvent system to obtain thiolized enzymatically hydrolyzed lignin. Attapulgite is mixed with an aqueous solution of an active metal component, ultrasonically dispersed, and then an alkaline solution is added dropwise, followed by calcination to obtain Me-ATP. Water, Me-ATP, thiolized enzymatically hydrolyzed lignin, and a penetrant are mixed and subjected to a hydrothermal reaction to obtain S / EHL-Me-ATP. This S / EHL-Me-ATP is dispersed in a spherical polymer molding solution, then added dropwise to water. After phase separation, spherical particles are obtained, and after standing, the composite material is obtained. This invention improves the adsorption selectivity, adsorption capacity, and regeneration performance of the composite material for pollutants. The composite material is less prone to agglomeration, its mechanical strength is significantly improved, and recycling is simpler.

The utility model provides a regeneration system for hydrogen peroxide fixed bed catalyst air, which is characterized in that a first main pipeline is used for introducing air, nitrogen, steam and desalted water into an upper tower of a hydrogenation tower, and a second main pipeline is used for introducing a working solution and aromatic hydrocarbon; the cooler is used for cooling the steam condensate; the hydrogenation tower regeneration steam condensate pipeline is used for communicating an inlet of the cooler with the hydrogenation tower upper tower, the hydrogenation tower middle tower and the hydrogenation tower lower tower respectively; the separator is used for separating tail gas in the condensate from the condensate or aromatic hydrocarbon; and the aromatic hydrocarbon reflux pipeline is used for introducing the aromatic hydrocarbon separated by the separator into the aromatic hydrocarbon pipeline for cyclic utilization. Organic impurities adsorbed by a catalyst in a hydrogenation tower are fully dissolved and washed away by using an aromatic hydrocarbon solvent, air is added to oxidize the catalyst for regeneration, and part of reducing substances adsorbed by the catalyst are oxidized and dissolved by the aromatic hydrocarbon solvent, so that the catalyst is deeply regenerated, a better catalyst regeneration effect is achieved, and the service life of the catalyst is prolonged. The product energy consumption is reduced.

The application provides a regeneration method of a phosphorus-poisoned Cu-LTA catalyst, and the regeneration method comprises the following steps: heating the phosphorus-poisoned Cu-LTA catalyst under a water-containing and / or water-free atmosphere at 700-900 DEG C to obtain a regenerated Cu-LTA catalyst. The regeneration method of the phosphorus-poisoned Cu-LTA catalyst provided by the application can realize catalyst regeneration through only one heating step, and has the advantages of simple operation method, low cost, easy realization, greatly shortened processing time compared with the prior art, and good regeneration effect, and the low-temperature activity can basically reach complete regeneration.

This invention discloses an in-situ regeneration system and method for SCR catalysts, relating to the field of flue gas purification technology. The invention modifies an existing denitrification tower by incorporating a back-blowing system, a cleaning system, a flue gas heating system, and a cleaning fluid recovery system. The back-blowing system removes accumulated ash from the catalyst module surface and pores using high-pressure purging. The regeneration fluid cleaning system cleans the catalyst of contaminants using different cleaning fluids. The flue gas heating system promotes the evaporation of moisture from the cleaned catalyst and the decomposition of precursors of active components on the catalyst surface, thus achieving catalyst regeneration. This invention is time-efficient and cost-effective, allowing catalyst regeneration to be completed during routine system maintenance. It provides excellent regeneration results, thoroughly removing fly ash, alkali metals, alkaline earth metals, and heavy metals from the catalyst, thus solving the catalyst poisoning problem.

The application discloses an extraction solvent and an extraction method for stepwise recovery of vanadium and chromium in a solution by steric hindrance effect of an amide extractant, wherein the extraction solvent is composed of extraction solvent A and extraction solvent B; the extraction solvent A is composed of a large steric hindrance amide extractant and diluent A; the extraction solvent B is composed of a small steric hindrance amide extractant and diluent B; the large steric hindrance amide extractant and the small steric hindrance amide extractant are both alkyl-substituted amide extractants; and the diluent A and the diluent B are both inert organic solvents. The steric hindrance effect of the amide extractant in the extraction solvent is utilized to stepwise recover vanadium and chromium in the solution, and high-purity chromium-containing stripping liquid and vanadium-containing stripping liquid are obtained, which has the advantages of high extraction rate, high separation coefficient, high product purity, fast extraction kinetics, good regeneration of the extraction solvent and green harmlessness.

The present invention discloses a hierarchically porous CO2 adsorption material and a preparation method thereof. The hierarchically porous CO2 adsorption material is prepared by photocuring 3D printing a photosensitive resin made of a photopolymerizable ionic liquid monomer, an amino-containing comonomer, a multi-functional crosslinking agent, a non-reactive pore-forming agent, etc., and then removing the pore-forming agent by supercritical drying. The present invention realizes the molecular-level uniform distribution of amino active sites, avoids the defects of traditional post-modification processes, and successfully constructs a multi-level pore structure conducive to gas mass transfer by combining polymerization-induced phase separation and supercritical drying. The prepared material has excellent CO2 adsorption performance and cycle stability, with an adsorption capacity of 4.5 mmol / g at 25 °C and 0.1 MPa, and a performance retention rate > 95% after 5 cycles.