23results about How to "High adsorption activity" patented technology

The invention belongs to the technical field of flue gas treatment, and particularly relates to a flue gas desulfurization and denitrification integrated device and method for a blast furnace hot blast stove. An outlet of a heat exchanger is connected with a booster fan, a cold air mixing valve is connected between the heat exchanger and the booster fan, and an outlet of the booster fan is connected with an inlet flue of a semi-fixed bed adsorption tower; an outlet flue is arranged on the side wall of the semi-fixed bed adsorption tower, the outlet flue and the inlet flue are arranged on different sides of the semi-fixed bed adsorption tower, the reducing agent storage device is connected with the injection structure, the injection structure is inserted into the inlet flue wall of the semi-fixed bed adsorption tower through a pipeline, and the semi-fixed bed adsorption tower is connected with the bed intermittent operation control system. An outlet pipeline at the bottom of the semi-fixed bed adsorption tower is connected with a discharging chain, the discharging chain is connected with a discharging bin, a feeding opening in the top end of the semi-fixed bed adsorption tower is connected with a feeding chain, and the feeding chain is connected with a feeding bin. The device completes desulfurization and denitrification in the semi-fixed bed adsorption tower, no additional device is needed for denitrification, the occupied area is small, and the investment is low; by-products can be comprehensively utilized, and zero waste discharge is realized.

The invention discloses a modification method and application of a modified amorphous alumina defluorination adsorbent, and belongs to the technical field of adsorption materials. A modification method of a modified amorphous alumina defluorination adsorbent comprises the following steps: (1) preparation of a precursor: dissolving an aluminum salt with a solvent, adding a regulator, uniformly stirring, and carrying out solvothermal reaction in a reaction kettle with a polytetrafluoroethylene lining to obtain the precursor; (2) preparation of amorphous alumina: calcining the precursor in a muffle furnace to obtain amorphous alumina AlOx; and (3) modifying the amorphous alumina: adding the amorphous alumina into the modifier solution, stirring, standing, filtering and drying to obtain the amorphous alumina. The method is easy and convenient to operate, low in cost, suitable for large-scale production, environmentally friendly and free of pollution, and the modified aluminum oxide is higher in adsorption activity and has excellent regeneration performance.

The invention discloses a metal organic framework material composite membrane as well as a preparation method and application thereof. The metal organic framework material composite membrane provided by the invention comprises a substrate, a hydrophilic layer, an adsorption layer and a fixing layer which are sequentially stacked, the fixing layer covers the surface of the adsorption layer and is connected with the hydrophilic layer; the adsorption layer contains a carbonized metal organic framework material, and the fixing layer contains a hydrophilic polymer. The carbonized metal organic framework material is used as the adsorption layer, and the material has a rich mesoporous structure and a high specific surface area, so that the adsorption activity of the composite membrane is improved; the hydrophilic layer is matched with the fixing layer, so that the adsorption layer can be simply, efficiently and firmly fixed in the membrane material, the composite membrane with good adsorption performance, high mechanical performance and good stability is formed, and the composite membrane has a good application prospect in gas adsorption and enrichment, especially in krypton and / or xenon adsorption and enrichment.

The invention relates to the technical field of biochar material preparation, in particular to a preparation method, a product and application of an yttrium iron oxide loaded biochar composite material. The biochar is prepared from the oxytetracycline mushroom dregs, the yttrium iron oxide is loaded on the basis of the biochar, the composite material is prepared through high-temperature calcination in the inert atmosphere, the composite material has obvious magnetic performance, the problem that materials are difficult to recycle is solved, and the cyclic utilization performance of the composite material is promoted. The CTC adsorption experiment result shows that the yttrium iron oxide loaded biochar composite material can effectively adsorb CTC and is an ideal material for efficient adsorbents.

The invention provides a copper-based adsorbent and application thereof in a glove box purification column, and belongs to the technical field of catalysts containing metals or metal oxides. The method comprises the following steps: adding active metal salt into a solvent, mixing and dissolving to obtain a mixed metal salt solution, mixing and dissolving a precipitant and the solvent to obtain a precipitant solution, co-precipitating the mixed metal salt solution and the precipitant solution, and separating, drying and calcining the obtained precipitate to obtain the supported copper-based adsorbent with the size phi of 1.8-6 mm. The copper-based adsorbent provided by the invention has good oxygen removal performance and regeneration capacity, can be continuously produced and is short in reaction time.

The invention discloses an MOF-based low-boiling-point VOCs adsorbent and a preparation method thereof, and relates to the technical field of adsorbents. Comprising the following steps: adding double-MOF powder into a water-borne epoxy resin emulsion, coating the surface of glass fiber with the double-MOF powder, curing to obtain a glass fiber semi-finished product, combining and adhering the glass fiber semi-finished product, and rolling the glass fiber semi-finished product into a rotating wheel with a honeycomb structure to obtain the VOCs adsorbent. The preparation method has the beneficial effects that iron-based and zirconium-based MOFs are subjected to doping self-assembly growth to prepare a dual-MOF material, and the dual-MOF material is fixed on the surface of the glass fiber by using a modified binder, so that the MOF runner is prepared. Compared with a traditional zeolite rotating wheel, by means of the design, the adsorption capacity and selectivity of low-boiling-point VOCs are remarkably improved. In addition, the modified epoxy resin binder not only enhances the binding force between the MOF and the rotating wheel, but also further expands the application scene and prolongs the service life of the prepared VOCs adsorbent.

This invention discloses a polyphosphazene / MXene self-supporting electrode loaded with cobalt single atoms, its preparation method, and its application, belonging to the field of seawater uranium extraction technology. Ti3AlC2 powder is etched in an HCl-LiF mixed solution and then ultrasonically exfoliated to obtain Ti3C2T. x Nanosheet suspension; simultaneously, hexachlorocyclotriphosphazene, 4,4'-dihydroxydiphenyl sulfone, and cobalt salt were dissolved in a solvent, and triethylamine was added. A condensation reaction was then carried out under ultrasonication to obtain Co-PZS; then Ti3C2T x After the nanosheet suspension is uniformly mixed with Co-PZS and carbon fiber fabric, it is transferred to a hydrothermal reactor for hydrothermal reaction. The resulting hydrothermal reaction product is then dried and calcined to obtain a polyphosphazene / MXene self-supporting electrode loaded with cobalt single atoms. This electrode is used for the electrochemical adsorption of uranyl ions in the solution system and exhibits excellent comprehensive uranium extraction performance, with advantages such as high capacity, fast rate, strong selectivity, and good stability, meeting the application requirements of seawater uranium extraction.

This invention discloses an industrial production method for cement clinker that co-processes heavy metal-containing waste, comprising: raw meal preparation: raw meal is prepared according to the following proportions by weight: 84-87 wt% calcareous raw materials, 6.0-7.2 wt% clayey raw materials, 4.8-5.8 wt% corrective raw materials, and 2.0-4.5 wt% heavy metal-containing waste; addition of composite synergist: a heavy metal adsorption-mineralization composite synergist is added to the raw meal; pre-decomposition: the homogenized raw meal is preheated by a multi-stage cyclone preheater and then enters a decomposition furnace for carbonate decomposition; clinker calcination: the decomposed raw meal enters a rotary kiln and is calcined at 1350-1450℃ to form clinker; and rapid cooling of clinker: the calcined clinker is rapidly cooled to room temperature by a grate cooler to obtain finished cement clinker. This invention can achieve a total solidification rate of heavy metals in clinker of 93%, and increase the retention of Pb, Cd and Zn by 13.9 times, 59.1% and 11.5% respectively, and increase the 28-day compressive strength to 61.8 MPa.

The invention discloses a zirconium hydroxide powder material and a preparation method and defluorination application thereof. The zirconium hydroxide powder material comprises ZrO (OH) 2, the specific surface area is larger than 55.7 m < 2 > / g, and the zirconium hydroxide powder material has high adsorption activity, has a good defluorination effect when applied to defluorination of an aqueous solution and plays a role in reducing the dosage of a defluorination agent. The zirconium hydroxide powder material is good in regeneration effect after defluorination, the regeneration process is simple, and the consumed time is short. The zirconium hydroxide powder is obtained by mixing commercially available zirconium hydroxide with ammonia water, standing and then carrying out heat treatment, and the method is simple, controllable and suitable for industrial production.

The invention belongs to the technical field of electrochemical energy materials, and particularly discloses a copper-silver double-monatomic electro-catalysis material and a preparation method and application thereof. The preparation method comprises the following steps: coating dopamine hydrochloride with silicon dioxide as a template to provide a nitrogen source and a carbon source, and carbonizing and etching to obtain the porous nitrogen-doped hollow carbon spheres with high specific surface area, thereby obtaining high carbon dioxide adsorption activity and high carbon monoxide desorption activity. And then through uniform loading of the copper-silver double monoatoms on the porous nitrogen-doped hollow carbon spheres and the electron action between doped nitrogen, the hydrogen evolution reaction is reduced, and the selectivity of CO2RR of the copper-silver double monoatom loaded porous nitrogen-doped hollow carbon sphere electrocatalytic material is greatly improved. The copper-silver double-monatomic electrocatalytic material provided by the invention is used for electrocatalytic reduction of carbon dioxide, and the synthesis process is simple in procedure, convenient to operate, short in reaction time, reliable in repeatability, low in production cost and very suitable for large-scale industrial production.

The invention relates to the technical field of tail gas treatment, in particular to a carbon fiber adsorption filler for tail gas generated in ethyl chloroformate production and a preparation method thereof.The preparation method comprises the following steps that iron phthalocyanine is taken and added into N, N-dimethylformamide, the mixture is stirred to be uniform, under nitrogen protection, surface modified carbon fibers are immersed, heating and heat preservation reaction are conducted, washing is conducted after the reaction is finished, and the carbon fiber adsorption filler for tail gas generated in ethyl chloroformate production is obtained; and drying to constant weight, and performing high-temperature activation treatment in a muffle furnace to obtain the carbon fiber adsorption filler for the tail gas in ethyl chloroformate production. The carbon fiber adsorption filler prepared by the invention has relatively high decomposition efficiency on phosgene in tail gas in ethyl chloroformate production.

The present application relates to the technical field of phosphate ore dressing, and particularly relates to a continuous positive and reverse flotation method for medium and low grade phosphate ore. The preliminary separation of phosphate ore and gangue ore is realized through 'two-stage crushing-gradient magnetic separation-cyclone classification', then the tailings of magnetic separation and coarse-grained phosphate ore are re-ground by a tower mill, and then 'positive flotation-reverse flotation-reverse flotation again' is carried out on the coarse phosphate ore based on a micro-bubble flotation column. In the positive flotation stage, combined depressants are used to efficiently depress gangue minerals such as quartz and dolomite, in the reverse flotation I stage, carbonates are deeply removed, in the reverse flotation II stage, an activator is introduced to improve the adsorption activity of silicate impurities, and silicate minerals are deeply removed, so that the efficient flotation of medium and low grade phosphate ore is realized. The flotation method provided by the present application effectively improves the flotation efficiency of medium and low grade phosphate ore, improves the quality and recovery rate of the concentrate, and achieves good flotation effect.

The utility model discloses an organic waste gas purification activated carbon adsorption device, the utility model relates to waste gas treatment technical field. Including the purification shell, still including the filter component, the outer wall of filter component is inserted with the inner wall of purification shell, the inner wall fixed connection of purification shell has the removal component, the filter component includes the installation shell, the inner wall fixed connection of installation shell has the honeycomb shell, this adsorption device passes through the honeycomb of honeycomb shell unique in filter component The structure has very big specific surface area, so that the activated carbon particle filled in the inside can be fully exposed in the waste gas, and the microporous structure of activated carbon is rich and has strong adsorption force to organic molecules, when waste gas passes through the filter hole of honeycomb shell and enters the inside, and fully contacts activated carbon particle, and the adsorption device reaches the purpose of organic waste gas purification activated carbon adsorption device.

The invention discloses a ferrous silicate catalytic material as well as a preparation method and application thereof, and belongs to the technical field of catalytic materials. The preparation method comprises the following steps: slowly adding a sodium silicate solution into a ferrous sulfate solution at a constant speed, stirring and reacting under a proper pH condition, filtering, washing and drying a reaction product to obtain the ferrous silicate catalytic material, and the obtained ferrous silicate catalytic material has the characteristics of an amorphous crystal phase structure, nano-particle morphology and positive charge on the surface. The adsorbent not only has high adsorption activity on anionic organic pollutants, but also can catalyze peroxides to oxidize and degrade the organic pollutants, so that the degradation rate of the organic pollutants is improved.

The invention belongs to the technical field of water purification materials, and particularly relates to a gelatin coated TiO2-polypyrrole composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: adding the polysorbate-80 into the paraffin oil, and stirring at 30-60 DEG C for 20-50 minutes to obtain an oil phase; heating water to 40-60 DEG C, then adding gelatin and the TiO2-polypyrrole composite precursor material, and stirring for 20-50 minutes to obtain a water phase; adding the water phase into the oil phase, and stirring for 30-60 minutes to obtain a mixed solution; and cooling the obtained mixed solution to 2-10 DEG C, then adding ethanol, stirring for 15-40 minutes, then sequentially washing with acetone and isopropanol, and freeze-drying the obtained solid matter, thereby obtaining the product. The polypyrrole and the gelatin contain functional groups such as amino groups, carboxyl groups and the like, and can form a complex with lead ions, so that the adsorption activity of the nano TiO2 material can be effectively improved, and the lead removal performance of the material is improved. The composite material disclosed by the invention shows very good removal rate and adsorption efficiency on lead ions in water.

The invention discloses an assembly type composite artificial wetland system and method in the technical field of water treatment. The assembly type composite artificial wetland system comprises a main body frame, a subsurface flow wetland module, an upstream flow deep bed composite biological filter and an integrated process intelligent water distribution system, the main body frame comprises a supporting structure, a grating and a bottom supporting structure, and the grating divides the interior of the main body frame into an upper layer and a lower layer; the subsurface flow wetland module and the upstream flow deep bed composite biological filter are respectively arranged on the upper layer and the lower layer of the main body frame; the upstream deep-bed composite biological filter forms a multi-stage hierarchical structure along the water inlet direction; the integrated process intelligent water distribution system is located in the main body frame; the main body frame adopts a structural ecological design, and compared with a traditional concrete / reinforced concrete pool body structure, the energy consumption in the building construction process is lower; the treatment system adopts novel environment-friendly functional materials, and is suitable for ecological restoration of river / landscape water, upgrading and recycling of municipal tail water, recycling of aquaculture wastewater and treatment of agricultural non-point source pollution.

The invention relates to self-purification transformer oil and a preparation method thereof, and belongs to the technical field of transformer oil preparation. Rare earth elements doped in the rare earth doped nanoparticles easily react with harmful impurities such as sulfur and oxygen in the transformer oil to generate high-melting-point compounds, and the compounds can be adsorbed and gathered by cellulose components of the compounds and discharged in the later period, so that harmful inclusions in the oil are reduced, and the oil quality is improved. The insulating property of the modified transformer oil is further improved. The rare earth composite particles have relatively high thermal conductivity, and can be used as a heat conduction channel when being uniformly dispersed in the transformer oil, so that the thermal conductivity of the transformer oil is improved, and the thermal conductivity of the transformer oil is further improved.

The invention relates to a method for treating organic pollutants by using a zeolite-based catalytic adsorption material, which comprises the following steps: carrying out post-treatment on the surface of Beta zeolite by using acid, alkali and a template agent to form a multistage mesoporous structure on the surface of the Beta zeolite, and then impregnating and loading Cu, so that the obtained catalytic adsorption material can realize complete catalytic oxidation degradation on toluene under a low-temperature condition.

The invention belongs to the technical field of water treatment materials, and discloses a water treatment material for removing lead from wastewater, a preparation method and an application thereof. The preparation method comprises: drying grapevines and bagasse, crushing them, mixing them to obtain a mixed powder; placing the mixed powder in a medium containing Fe 3+ The solution is stirred and solid-liquid separated to obtain a precursor material; the precursor material is carbonized under a nitrogen atmosphere, ground into powder, fly ash and alkali metal hydroxide are added and mixed, and activated to obtain porous modified biochar; sodium alginate solution is used as an embedding agent and CaCl2 solution is used as a cross-linking agent to gel embed the porous modified biochar, and after freeze drying, the water treatment material for wastewater lead removal is obtained. The preparation method of the present invention is simple to operate, and the prepared water treatment material can effectively adsorb lead ions and has excellent renewable and reusable performance, which is conducive to promotion and large-scale use.

The invention relates to a cerium-based adsorbent for treating radioactive waste liquid and a preparation method of the cerium-based adsorbent. The preparation method comprises the following steps: preparing porous biochar, and performing hydrothermal treatment on the porous biochar and a hydrophilic reagent to prepare a hydrophilic porous biochar matrix; dispersing a cerium source, an iron source and the hydrophilic porous biochar matrix into deionized water to obtain a metal salt solution; the method comprises the following steps: dropwise adding ammonia water into a metal salt solution to obtain a mixed solution with a stable pH value, reacting the mixed solution in a stainless steel autoclave to obtain a product, washing the product to be neutral, and drying and calcining the obtained composite oxide to obtain the cerium-based adsorbent. The composite cerium-based adsorbent with different surface oxygen defects is synthesized through a hydrothermal method by taking oxides of iron and cerium as catalytic activity reagents and taking a hydrophilic porous biological carbon matrix as a carrier, and the surface defects of the composite cerium-based adsorbent are beneficial to generation of relatively stable hydroxyl groups, so that the adsorption activity can be remarkably improved.

The invention relates to a beta-COF / GA composite adsorption material which is prepared by the following steps: by taking graphene oxide as a carbon precursor, blending the graphene oxide with a reinforced phase beta-COF to form an aqueous solution system, and adding a reducing agent ammonium citrate to carry out liquid-phase reduction self-assembly reaction, thereby obtaining the beta-COF / GA composite adsorption material. The beta-COF is loaded on the surface and in pore channels of the reduced graphene aerogel to obtain the adsorption material with the mass ratio of the beta-COF to the graphene oxide being 1: (5-15). The beta-COF / GA composite adsorption material disclosed by the invention has rich microporous structures and high adsorption activity, and can be used for efficiently adsorbing and removing phenol molecules in an aqueous solution.

The invention discloses a desulfurizer and a desulfurization method using the desulfurizer, and belongs to the technical field of desulfurizer processing. The invention is used to solve the technical problem that in the prior art, gas molecules of zinc oxide type desulfurizer are not easy to diffuse and adsorb on the surface of particles in gas desulfurization engineering, and the sulfur capacity, specific surface area and desulfurization efficiency of the desulfurizer need to be further improved. The desulfurizer in the invention is prepared by emulsifying and granulating after molten salt etching modified kaolin, loaded activated carbon and sol form a mixed colloid according to a weight ratio of 8-9:13-15:60. The mixed colloid is prepared by emulsification and granulation. The kaolin is modified by molten salt etching, activated carbon loaded with zinc and magnesium metal oxides and nitrides is prepared as a base material, and silica sol is used as an auxiliary agent. After emulsification and granulation, not only the sulfur capacity and specific surface area of ​​the desulfurizer are effectively improved, but also the desulfurization efficiency of desulfurization using the desulfurizer is improved.

The invention relates to the technical field of medicines, and particularly discloses a pharmaceutical composition containing a cistanche deserticola extract and a microbial preparation. The pharmaceutical composition containing the cistanche deserticola extract is prepared from the following raw materials in parts by mass: 1 to 3 parts of the cistanche deserticola extract, 0.1 to 0.5 part of glutathione, 1 to 2 parts of dopamine hydrochloride and 2 to 6 parts of montmorillonite. The microbial preparation comprises the following raw materials in parts by mass: 5-12 parts of the pharmaceutical composition containing the cistanche extract, 1-2 parts of compound microorganisms, 10-20 parts of starch and 1-2 parts of superfine silica powder. The invention also discloses application of the pharmaceutical composition containing the cistanche deserticola extract or / and the microbial preparation in preparation of drugs for treating Parkinson's disease. The traditional Chinese medicine composition not only can effectively improve the motor function of Parkinson's disease patients and delay the progress of Parkinson's disease, but also is remarkable in effect, high in safety, simple in preparation method and suitable for large-scale popularization and application.