233 results about "Chemical adsorption" patented technology

The invention relates to the technical field of surface engineering, discloses a method and a system for preparing a yttrium fluoride composite ceramic coating through atmospheric plasma spraying, and aims to solve the problems that the yttrium fluoride coating generates a brittle aluminum fluoride layer on the surface of an aluminum substrate due to fluorine ion diffusion, so that the bonding strength is low, and the yttrium fluoride coating is easy to peel off and lose efficacy. The method comprises the following steps: sequentially carrying out mechanical polishing, ultrasonic cleaning and sand blasting roughening on an aluminum base material; preparing composite powder formed by mixing yttrium fluoride, yttrium oxide and nanometer aluminum oxide according to the mass ratio of 75: 20: 5; sequentially depositing a yttrium oxide transition layer, a composite barrier layer and a yttrium fluoride functional layer by adopting atmospheric plasma spraying; and finally carrying out vacuum post-heat treatment. According to the system, through the synergistic effect of the three layers of gradient structures, the transition layer forms an yttrium aluminate metallurgical bonding interface, the barrier layer inhibits fluorine ion diffusion through the dual mechanisms of nanometer aluminum oxide physical barrier and yttrium oxide chemical adsorption, and the functional layer guarantees the plasma erosion resistance. According to the method, the bonding strength of the coating is remarkably improved to 50 MPa or above, the porosity is lower than 3%, stripping is avoided under 500-hour high-energy plasma bombardment, the process cost is reduced by 40%, and the method is suitable for cavity protection of semiconductor etching equipment.

The invention discloses a compound environment-friendly corrosion inhibitor as well as a preparation method and application thereof. The choline ionic liquid comprises choline ionic liquid and amino acid, the choline ionic liquid is choline cations; the amino acid is one or more of cysteine and tryptophan. The compound environment-friendly corrosion inhibitor has high corrosion inhibition efficiency, and the compound structure of the compound environment-friendly corrosion inhibitor further improves the protection performance of the compound environment-friendly corrosion inhibitor through a dual adsorption mechanism of the synergistic effect of physical adsorption and chemical adsorption on the metal surface. According to the compound environment-friendly corrosion inhibitor, a full-green ionic liquid corrosion inhibition system is constructed, the environment-friendly requirement is met, and a metal protection solution can be provided for industrial acid pickling and other strong acid working conditions. Not only is the progress of a corrosion inhibition technology promoted, but also more economic and environment-friendly anti-corrosion application can be provided for actual industrial scenes.

The invention discloses application of a carbon steel corrosion inhibitor based on combination of physical adsorption, chemical adsorption and hydrophobic barrier, and relates to the technical field of metal corrosion inhibition. The technical problem that a corrosion inhibitor in the prior art is low in corrosion inhibition efficiency in a high-temperature strong-acid environment is solved. The preparation method of the carbon steel corrosion inhibitor comprises the following steps: firstly, ultrasonically dissolving 4-aminopyridine to obtain a solution I; then, dropwise adding an isopropanol solution of 2, 3-epoxypropyltrimethylammonium chloride into the solution I according to a molar ratio of 1: 1, removing a solvent through a rotary evaporation method, washing with ethanol, centrifuging to obtain quaternized 4-aminopyridine, and drying the quaternized 4-aminopyridine; and finally, the dried quaternized 4-aminopyridine and bromododecane are added into acetonitrile for a reaction, diethyl ether is dropwise added into obtained reaction liquid for precipitation, and the quaternized 4-aminopyridine-bromododecane carbon steel corrosion inhibitor is obtained after drying. The prepared carbon steel corrosion inhibitor is high in corrosion inhibition efficiency in a high-temperature and strong-acid environment.

The application belongs to the technical field of new materials, and relates to a geopolymer foam material with a vein-shaped multistage network pore structure and a preparation method thereof. The application comprises the following steps: pretreating luffa, cow horn fiber and coconut fiber respectively, and loading catalysts; uniformly mixing fly ash floating beads, metakaolin, slag, an anionic surfactant, the cow horn fiber loaded with catalysts and the coconut fiber loaded with catalysts to obtain mixed powder; mixing the mixed powder with an alkali activator to prepare a slurry, adding a chemical foaming agent into the slurry, and then pouring the slurry into the luffa loaded with catalysts, and then sequentially performing foaming and curing treatment; and performing freeze-drying and calcination on the cured material, and the geopolymer foam material is obtained; the geopolymer foam material prepared by the application has a vein-shaped multistage pore structure, can have physical and chemical adsorption properties on heavy metal ions and cationic dyes, and can remove pollutants such as macromolecules, microorganisms, perfluoroalkyl compounds and ammonia nitrogen compounds.

The invention provides a preparation method and application of a modified PVC adsorbent for gold extraction of carbonaceous gold ore, and belongs to the technical field of organic polymer materials and resource utilization. Based on construction of a hydroxylation-xanthate esterification reaction and bifunctional adsorption sites, a series of chemical modification paths of acetate nucleophilic substitution-hydrolysis-carbon disulfide alkali treatment are established, and xanthate functional groups with high reaction activity are accurately constructed on an inert PVC framework. Sulfur atoms in xanthate groups of the modified PVC are excellent electron donors and can generate strong chemical adsorption with metal impurities or polar sites on the surface of carbon, meanwhile, Van der Waals interaction between a main chain of the modified PVC and the carbon is reserved, and unmodified PVC or single hydroxylated PVC does not have the synergism of chemical adsorption and physical adsorption, so that the modified PVC can be used for preparing the carbon-modified PVC composite material, and the carbon-modified PVC composite material can be used for preparing the carbon-modified PVC composite material. And leap-type improvement of the adsorption capacity and selectivity of organic carbonaceous in minerals is realized.

The invention provides a nitrogen-containing boric acid ester-nano hybrid composite anti-wear additive as well as a preparation method and application thereof, and belongs to the technical field of lubricating oil additives. The nitrogen-containing boric acid ester, the functionalized nanoparticles, the ionic liquid, the auxiliary anti-wear agent and the dispersion stabilizer are subjected to nano-scale hybrid compounding, and the nitrogen-containing boric acid ester, the functionalized nanoparticles, the ionic liquid, the auxiliary anti-wear agent and the dispersion stabilizer have a synergistic effect on four aspects of physical bearing, chemical adsorption, interface modification and extreme pressure enhancement; a multi-synergistic lubrication and protection system of an adsorption film, a physical isolation layer, an extreme pressure reaction layer and rolling lubrication microspheres is constructed, efficient wear resistance, friction reduction, bearing and stability improvement are jointly achieved, and the lubricating oil is suitable for insoluble base oil.

The invention belongs to the field of cultural relic protection, and relates to a cultural relic surface accessible acidity determination method, which comprises: 1) placing a cultural relic sample using palm leaves as a carrier in a chemical adsorption device, and pre-treating in an inert gas atmosphere; (2) after pretreatment is completed, mixed gas formed by n-butylamine and inert gas is introduced into a chemical adsorption device, and specific chemical adsorption is carried out through the n-butylamine and accessible acid sites on the surface of the cultural relic sample; (3) after adsorption is completed, heating the inner cavity of the chemical adsorption device at a constant rate, desorbing n-butylamine, and recording a desorption signal at the same time; and 4) calculating the acid site concentration according to the desorption signal peak area obtained in the step 3), and determining the acid intensity according to the peak position distribution.The invention provides the cultural relic surface accessible acidity determination method with good specificity and high sensitivity.

The application discloses a modified nitrile rubber sealing material resistant to hydrogen permeation damage and a preparation method, and belongs to the field of high polymer rubber sealing materials.The material comprises, in terms of weight parts, nitrile rubber 100 parts, composite nylon 20-35 parts, exfoliated organic montmorillonite 5-15 parts, nano hydrogen-resistant filler 3-8 parts and the like.By introducing the composite nylon as an "inlaid frame", cooperating with the "labyrinth" barrier effect of the exfoliated montmorillonite and the adsorption / quenching effect of the nano filler, a "lamellar barrier-interface anchoring" trinity protection network is constructed, hydrogen permeation and damage are inhibited from the dual mechanisms of physical barrier and chemical adsorption.The preparation adopts a two-stage low-temperature mixing process, the nylon is first blended with the rubber at low temperature, and then the remaining fillers are added at high temperature to ensure dispersion.The material prepared by the method has low hydrogen permeation rate and excellent mechanical properties, and is suitable for sealing elements of hydrogen conveying pipelines.

The invention discloses a forming method of a magnesium oxide-based carbon dioxide adsorbent suitable for large-scale preparation. The forming method comprises the following steps: calcining a magnesium-containing precursor to prepare porous magnesium oxide raw powder; the preparation method comprises the following steps: carrying out impregnation modification on magnesium oxide raw powder and an alkali metal salt solution to obtain wet mixed thick slurry, drying the slurry, and carrying out secondary calcination to obtain modified adsorbent raw powder; and mixing the raw powder with deionized water, a forming aid and the like to prepare a plastic wet material, and performing extrusion-spheronization balling, drying and calcining to obtain regular spherical adsorbent particles. The formed adsorbent prepared through the method has the advantages of being controllable in particle size, high in mechanical strength, good in adsorptive property after being formed, excellent in cycling stability and the like, can be used for CO2 chemical adsorption trapping of CO2-containing gas under the medium-temperature condition, and is good in CO2 adsorptive property, economical efficiency of the technological method and environmental protection performance, the process technology is easy to amplify, and the method is suitable for industrial production. The method is suitable for industrial large-scale production.

The application discloses an Al-doped two-dimensional MnO2 adsorption structure for SO2 immobilized adsorption and application thereof. The Al-doped two-dimensional MnO2 adsorption structure for SO2 immobilized adsorption comprises a two-dimensional MnO2 monolayer as a substrate, and Al modified atoms on H sites on the surface of the substrate, wherein the doping concentration of the Al modified atoms is 2% to 4%. A stable Al-O interaction interface is formed between the Al modified atoms and O atoms in SO2 molecules, so that a strong chemical adsorption interface dominated by ionic bond interaction is formed between SO2 and the adsorption structure; in a preferred configuration, the adsorption energy of the adsorption structure for SO2 is -2.154 eV, the interface charge transfer amount is -0.49 e, and the Al-O interaction distance is 1.737 Å. The adsorption structure can be used for irreversible capture, enrichment and immobilized adsorption of SO2, and industrial waste gas desulfurization and capture of toxic gas containing sulfur.

The utility model relates to the technical field of carbon capture, and discloses a multistage membrane separation coupled chemical adsorption carbon capture integrated device, which comprises a pretreatment device, a membrane separation device, an adsorption tower and an auxiliary device, an inner frame is arranged in the adsorption tower, and the upper side and the lower side of the outer part of the inner frame in the adsorption tower are respectively provided with a building frame; the first servo motor is arranged in the adsorption tower and located on the left side of the lower end of the inner frame, a driving rod is installed at the output end of the first servo motor, and two steam nozzles are arranged at the upper end of the driving rod; the second servo motor is arranged at the end, away from the first servo motor, of the upper end of the driving rod, a driving gear is installed at the output end of the second servo motor, a transmission gear ring is arranged in the lower end of the inner frame, and the driving gear is connected with the transmission gear ring in a meshed mode; and the chemical adsorbent is arranged in the inner frame. According to the utility model, the chemical adsorbent is regenerated by using high-temperature steam in the adsorption tower, so that the cost is reduced.

This invention relates to the field of air pollution control technology, and in particular to a formaldehyde adsorbent from Forsythia suspensa and its application in formaldehyde adsorption. This invention uses Forsythia suspensa waste (such as withered branches) as raw material, and modifies it using a calcium chloride-assisted neutral protease method. Combined with specific preparation conditions, the resulting Forsythia suspensa formaldehyde adsorbent has a large specific surface area and a porous surface, exhibiting excellent adsorption conditions. During adsorption, -OH groups play a role; the adsorption process conforms to pseudo-second-order kinetics and the Freundlich isotherm, exhibiting a physicochemical mixed adsorption with chemical adsorption as the primary process. It involves multi-molecular layer heterogeneous site adsorption and a spontaneous endothermic reaction, achieving the national standard of 0.08 mg / m³ after 22 hours. 3 Even after eight desorption and regeneration cycles, it still retains a certain adsorption effect on formaldehyde.

The invention belongs to the technical field of materials, and particularly relates to a GaO-coated Mo2C MXene surface chemical adsorption type heterojunction composite material and a preparation method and application thereof. The preparation method comprises the following steps: (1) adding Mo2Ga2C powder into an NH4Cl solution, uniformly mixing, and transferring to a reaction container; (2) hydrothermal reaction; the temperature of the hydrothermal reaction is 200 to 220 DEG C; and (3) after the hydrothermal reaction is finished, carrying out solid-liquid separation, washing and drying to obtain the GaO (at) Mo2C MXene surface chemical adsorption type heterojunction composite material. According to the preparation method disclosed by the invention, synchronous preparation and stable chemical adsorption combination of GaO zero-dimensional particles and Mo2C MXene can be realized; according to the preparation method disclosed by the invention, the preparation process is remarkably simplified, the preparation period is shortened, the production cost is reduced, and the lithium storage performance of the heterojunction is favorably improved.

The invention discloses a method for preparing a humic acid anchored hydrotalcite coated Fe3O4 magnetic material based on salt lake bischofite and application, and belongs to the technical field of heavy metal adsorbents. The method comprises the following steps: preparing high-purity magnesium chloride hexahydrate by taking salt lake bischofite as a raw material, mixing with an aluminum source, hydrolyzing to generate a hydrotalcite precursor, and decomposing the nitrogen source to provide an alkaline environment to promote formation of a layered structure; humic acid is chelated with heavy metals through functional groups and is stably anchored on the surface of hydrotalcite, Fe3O4 is used as a magnetic substrate, the material is endowed with magnetism, and a hydrothermal one-step in-situ growth composite structure is realized. The composite material combines the advantages of humic acid, hydrotalcite and Fe3O4, the adsorption capacity is remarkably improved, chemical adsorption is enhanced, efficient solid-liquid separation is achieved, and the defects of traditional materials are overcome. When the bischofite is used as a heavy metal adsorbent, lead ions can be efficiently removed and rapidly recovered, the steps are simple, the cost is low, the effect is remarkable, a new way is developed for utilization of the bischofite in the salt lake, and the bischofite has subject and application values.

A precipitate and / or an inclusion in a metal material are extracted by electrolysis using an electrolyte solution. The electrolyte solution contains an adsorbent physically adsorbed and / or chemically adsorbed to any metal other than a matrix metal of the metal material. The extracted precipitate and / or inclusion can be quantitatively analyzed with high accuracy.

The invention belongs to the technical field of materials and electrochemistry, and particularly relates to a preparation method based on a nonmetal monatomic catalyst, which comprises the following steps: S1, preparing an electrostatic spinning precursor solution by adopting a solvent method; and S2, preparing a conductive carbon nanofiber skeleton by adopting an electrostatic spinning process: carrying out electrostatic spinning on the electrospinning precursor solution in the step S1 at normal temperature, and carrying out pre-oxidation and high-temperature carbonization to obtain the carbon nanofiber loaded non-metal iodine monatomic. The carbon nanofibers in the material have excellent conductivity and a continuous three-dimensional network structure, and an efficient channel is provided for uniform loading of sulfur and rapid conduction of electrons. And meanwhile, the rich pore structure can effectively accommodate molten and infiltrated sulfur, and the diffusion of polysulfide in the electrolyte is inhibited by utilizing a physical confinement effect, so that the shuttle effect is relieved fundamentally, and the integrity in long-cycle operation is ensured. The iodine monatomic active sites enhance the chemical adsorption capacity to polysulfide, so that the capacity fading caused by migration of the iodine monatomic active sites is avoided.

A water treatment method comprising electrochemically adsorbing, by using a working electrode formed of an organic redox substance having selective adsorption ability with respect to a specific substance dissolved in water to be treated, the specific substance on the working electrode, wherein the specific substance is ammonium ion, the organic redox substance is a polymer of 2,5-diamino-1,4-benzoquinone, and the ammonium ion is electrochemically adsorbed on the working electrode by applying, to the working electrode immersed in the water to be treated, a first prescribed voltage determined by using the minimum current value of a cyclic voltammogram with respect to the ammonium ion as an index.

The invention discloses a TEPA modified bimetallic MOF material for CO2 adsorption and a preparation method of the TEPA modified bimetallic MOF material, and belongs to the technical field of CO2 adsorption. The preparation method comprises the following steps: firstly, by virtue of a solvothermal method, taking zinc nitrate hexahydrate and magnesium nitrate hexahydrate as bimetallic sources, and reacting with an organic ligand 2, 5-dihydroxy terephthalic acid, so as to prepare Zn-Mg bimetallic MOF-74; and then grafting tetraethylenepentamine to the skeleton of the bimetallic MOF-74 in an inert atmosphere by adopting a post-synthesis grafting method. The chemical adsorption site of TEPA is combined with the physical adsorption framework of Zn-Mg bimetal MOF-74, the regulation and control effect of bimetal on the pore structure and rich amino functional groups introduced by TEPA are utilized, the CO2 adsorption capacity, the amine efficiency and the cycle stability are improved, and the preparation method is mild in condition, simple in process, easy to expand and suitable for industrial production. The method has a wide application prospect in the fields of industrial flue gas CO2 capture and the like.

The invention discloses a bionic liquid lubricant capable of forming a multilayer super-lubricating film on the surface of high-roughness steel and a preparation method of the bionic liquid lubricant, and relates to the technical field of lubricant formulas and preparation methods, and the bionic liquid lubricant comprises a mixed liquid prepared from water, polyethylene glycol, phytic acid modified graphene oxide and graphene oxide as raw materials. The phytic acid modified graphene oxide and the unmodified graphene oxide are compounded to serve as a synergistic additive, a rapid chemical adsorption layer is constructed through the strong chelation of phytic acid groups and iron ions on the steel surface, and the unmodified graphene oxide is arranged in situ under shear stress to form a low-resistance shear layer; and polyethylene glycol provides a three-dimensional hydrogen bond network supporting layer, and the three layers are coupled to form a multi-layer super-lubricating film structure, so that the purposes that the time is shortened on the surface of the high-roughness engineering steel friction pair, macroscopic super-lubricity is realized, the steady-state friction coefficient is as low as 0.006-0.007, and the bearing capacity breaks through 600 MPa are achieved.

This invention discloses a low-corrosion chloride molten salt heat transfer and storage medium, method, and application, belonging to the field of molten salt thermal storage technology. The high-heat-capacity, low-corrosion carbonate molten salt heat transfer and storage medium of this invention is composed of 18%~22% potassium chloride, 6%~10% sodium chloride, 1%~3% aluminum powder, 1%~3% magnesium powder, 1%~3% zinc powder, with the remainder being zinc chloride. Its key feature is the introduction of metal powder into the molten salt, which not only achieves excellent thermal storage performance at 600℃~800℃, but also reduces corrosion by utilizing the potential regulation ability of dissolved metal ions and the formation of highly active [Al] from gaseous chloride products through physical and chemical adsorption. This low-corrosion chloride molten salt heat transfer and storage medium achieves excellent thermal storage performance and low corrosivity, and can be applied in solar thermal power generation and molten salt energy storage.

The invention provides a solid desulfurizer, a preparation method and application, and belongs to the technical field of desulfurizers. According to the invention, iron ions and manganese ions are taken as bimetallic centers and complexed with benzoic acid series organic ligands, alpha-cyclodextrin is added to construct a binary metal organic framework, and calcination is carried out under a protective atmosphere. The molar ratio of the double metals is (1-15): 1, the molar ratio of the total amount of the double metals to the alpha-cyclodextrin is 1: (0.1-0.5), and the molar ratio of the ligand to the iron ions is (2-4): 1. The desulfurizer realizes deep removal of hydrogen sulfide by virtue of the synergistic effect of physical adsorption, chemical adsorption and catalytic oxidation, the sulfur capacity reaches 5.3-6.9 mmol / g, the desulfurizer can be regenerated after being purged by hot inert gas at 160-200 DEG C, the retention rate of three times of regeneration is 84% or above, and the desulfurizer is suitable for desulfurization of industrial gases such as natural gas and biogas and has the advantages of high efficiency, stability and environmental protection.

The invention belongs to the technical field of carbon capture functional materials, and particularly relates to a preparation method of a coconut shell-hydrotalcite-amino compound carbon dioxide adsorbent, coconut shell biochar is used as a porous carrier matrix, hydrotalcite (LDH) is uniformly loaded on the surface and in pores of the coconut shell biochar through a coprecipitation method, and then polyethyleneimine (PEI) is used as an amino modifier for amino modification to obtain the coconut shell-hydrotalcite-amino compound carbon dioxide adsorbent. The coconut shell-hydrotalcite-amino compound carbon dioxide adsorbent with a multi-layer pore channel structure, abundant surface active sites and high COselective adsorption performance is prepared. The preparation method has the beneficial effects that PEI is adopted for carrying out directional amino functional modification on the coconut shell waste for the first time, and the prepared adsorbent has rich hierarchical porous structures and amino active sites; the amino-modified coconut shell adsorbent is obtained and shows excellent COselective adsorption performance and cyclic regeneration stability; the magnesium-aluminum hydrotalcite is loaded on the treated coconut shell for the first time, so that the chemical adsorption capacity, the industrial potential and the stability are remarkably improved.

According to the solid stemming with the high CO adsorption performance and the application of the solid stemming, modified sepiolite is adopted as a core functional component, natural sepiolite is modified through an acidification-hydrothermal-copper loading triple process, the specific surface area, the pore volume and the surface active site density of the solid stemming are remarkably increased, and the CO adsorption performance is improved; the solid stemming is endowed with efficient physical and chemical adsorption capacity on CO molecules. At the moment of blasting, the blasthole plugging material is crushed and dispersed along with high-pressure airflow, and the modified sepiolite micro powder is diffused in the underground space after blasting, so that escaping CO gas can be quickly captured and fixed, the forced ventilation and smoke discharge time is shortened, and the roadway tunneling efficiency is improved. And by controlling the concentration of the saline solution and the ratio of the modified sepiolite to the saline solution, the solid stemming has good plasticity and dispersity, is convenient for underground operation and is not easy to bond, and the construction efficiency is improved.

The application discloses a long-acting antibacterial adsorption filler and a preparation method thereof, and comprises the following steps: S1, preparation of composite activated alumina; S2, preparation of aminated composite alumina; S3, preparation of organically modified composite alumina; and S4, preparation of the long-acting antibacterial adsorption filler. The long-acting antibacterial adsorption filler is prepared by loading cerium and bismuth composite oxides on an activated alumina substrate, and then bridging with a silane coupling agent, and sequentially introducing maleic anhydride, 2,3-epoxypropyl trimethyl ammonium chloride and 2-mercaptothiazoline, so that the finally-prepared filler integrates multiple functions such as physical adsorption, chemical adsorption, contact sterilization and slow-release sterilization. The method effectively solves the technical problems of single function of a traditional adsorbent, inability to sterilize and easy secondary pollution, and achieves omnibearing and long-acting purification of indoor air pollutants.

The application discloses a kind of carbon tank failure mode mining systems based on big data, the present application relates to automobile emission control technical field, including: three-domain fusion perception layer, for obtaining the multi-source data of carbon tank in the running process, and the multi-source data is uniformly encoded, constructs the three-domain fusion feature space of the physical structure parameter of carbon tank, chemical adsorption characteristic and real-time operation condition.The carbon tank failure mode mining system based on big data, through multistage collaborative screening and evolution type feedback cycle verification framework, without increasing hardware cost, significantly improve the accuracy and early warning capability of carbon tank fault diagnosis, can effectively identify early weak fault characteristics that traditional method is difficult to capture, and accurately predict fault evolution path and remaining useful life.Overall, it realizes the upgrade of carbon tank fault from passive response maintenance to active predictive maintenance, reduces the risk of emission exceeding standard and vehicle operation failure rate caused by carbon tank failure.

The invention belongs to the technical field of air purification functional materials, and relates to a degradable particulate matter and VOCs protective laminated cellulose paper-based material and a preparation method thereof. The material comprises a physical adsorption layer, a catalytic decomposition layer and a chemical adsorption layer, the physical adsorption layer is a paper-based material formed by compounding cellulose fibers and montmorillonite, the catalytic decomposition layer is a paper-based material formed by compounding cellulose fibers and titanium dioxide, and the chemical adsorption layer is a paper-based material formed by modifying cellulose fibers through amino silane. The physical adsorption layer not only preliminarily adsorbs the VOCs, but also prolongs the residence time of the VOCs in the catalytic layer, and provides more sufficient conditions for photocatalytic reaction. Then, VOCs enter a catalytic decomposition layer and are efficiently degraded into harmless substances under the action of a titanium dioxide photocatalyst. The photocatalytic reaction efficiency and the overall removal rate of VOCs are remarkably improved, and meanwhile, the problem of incomplete catalysis caused by too fast airflow is solved.

The invention discloses a fluorine-containing VOCs waste gas purification treatment process and device in the lithium battery disassembling and recycling process, and belongs to the technical field of fluorine-containing VOCs waste gas purification treatment. The device specifically comprises a pretreatment unit, a core purification unit and a post-treatment unit; according to the method, a serial multi-stage purification process is integrated on the basis of a combined process of a quench tower, a dry-type chemical filter group, a heat storage combustion furnace and an alkali spray washing tower, so that the waste gas stage treatment effect is improved, and a pretreatment unit consisting of the quench tower and the dry-type chemical filter group is used for pretreatment in a pretreatment stage; the waste gas is subjected to step-by-step gradient cooling and dry chemical adsorption in a multi-module axial functional gradient manner, and the core effect is that most fluoride is efficiently removed in advance before the waste gas enters a core purification unit (a heat storage combustion furnace), so that the condition for forming hydrofluoric acid corrosion is eliminated from the source.

The invention discloses a targeted chemical adsorption deposition method for acidic sites on the outer surface of a molecular sieve and application of the targeted chemical adsorption deposition method, and belongs to the field of molecular sieve catalysis. The method comprises the following steps: sequentially carrying out a silicon source adsorption process, a vacuum desorption process and a roasting deposition process on a molecular sieve; the molecular sieve is selected from one of a ZSM-5 molecular sieve, an IM-5 molecular sieve and an MCM-22 molecular sieve. According to the deposition method, effective coverage of acidic sites on the outer surface of the molecular sieve can be achieved with the minimum deposition amount, and influences on other properties of the molecular sieve, especially diffusion of reactants and target products, are avoided. The catalyst modified by the method shows high reactant conversion rate and high p-xylene and low-carbon olefin selectivity in the process of co-production of p-xylene and low-carbon olefin through methanol-toluene coupling reaction.

The utility model provides a glowing filament tester integrating linkage of gas purification and gas monitoring, which relates to the technical field of glowing filament testers and comprises a main board, a test box is arranged at the top end of the main board, a negative pressure suction device is mounted on the inner wall of the test box, an exhaust pipe is mounted at one end of the negative pressure suction device, and a gas outlet pipe is mounted at the other end of the negative pressure suction device. One end, far away from the negative pressure suction device, of the exhaust pipe penetrates through the test box and is fixedly provided with a treatment box. A double-layer high-temperature-resistant glass observation door and a silica gel sealing ring are adopted, a closed test environment is formed, gas leakage is prevented, a negative pressure suction device is arranged in the test box, and the test box is connected with an external treatment box through an exhaust pipe and then connected with an external chemical adsorption tower through a first communicating pipe and a second communicating pipe. The activated carbon plate installed in the treatment box is used for adsorbing benzene and particulate matter to achieve primary purification, gas obtained after primary purification enters the chemical adsorption tower, acid gas is neutralized through a NaOH solution in the chemical adsorption tower, and the secondary purification effect is achieved.

The invention relates to the technical field of intelligent power grid equipment, discloses a chemical erosion prevention industrial control cabinet for an intelligent power grid, and aims to solve the problem that devices in a cabinet are eroded by chemical gas due to the fact that the chemical gas enters the cabinet body. According to the invention, chemical adsorption medium filtration is carried out in the air inlet shell, external air is sucked by the fan and must firstly pass through the chemical adsorption medium (such as activated carbon and alkaline / acidic adsorption cotton), and the medium can selectively adsorb acidic gas (HCl and SO), alkaline gas (NH) or organic corrosive gas (benzene and formaldehyde) in the external air; the air entering the cabinet body is ensured to be clean air, and chemical gas is prevented from entering through the actions, so that devices in the cabinet body are prevented from being eroded by the chemical gas.