188 results about "Xylene" patented technology

The invention relates to an adsorbent based on an X molecular sieve and preparation and application thereof, and a preparation method of the adsorbent comprises the following steps: (1) mixing the X molecular sieve with a binder, molding and roasting to obtain a molded body; (2) treating the molded body obtained in the step (1) with an alkali solution to perform in-situ crystallization on the binder in the molded body to obtain a crystallized product; (3) carrying out partial barium ion exchange on the crystallized product obtained in the step (2) by using a barium salt solution, and drying to obtain a dried product; (4) carrying out ammonium ion exchange on the dried product obtained in the step (3) by using an ammonium salt solution, and roasting in a flowing atmosphere to obtain a roasted product; and (5) performing barium ion exchange and optional potassium ion exchange on the roasted product obtained in the step (4), and then drying to obtain the adsorbent. The adsorbent has at least two kinds of mesoporous channels with different apertures, has high barium ion exchange capacity, high adsorption capacity and compressive strength, and shows good adsorption selectivity and mass transfer performance when used for adsorption separation of p-xylene.

The application discloses a synthesis method of 2,3,3',4'-biphenyl tetracarboxylic dianhydride, characterized in that 2,3-dimethylaniline is used as a starting raw material, 2,3-dimethylaniline diazonium salt is prepared through a diazotization reaction, then 2,3,3',4'-tetramethyl biphenyl is prepared through a coupling reaction of the 2,3-dimethylaniline diazonium salt and o-xylene under the catalysis of cuprous chloride, and finally 2,3,3',4'-biphenyl tetracarboxylic dianhydride is prepared through an oxidation reaction and dehydration to form anhydride. The coupling reaction in the synthesis method has good selectivity, 3,3,4',4'-tetramethyl biphenyl which is difficult to separate is not generated, high-purity a-BPDA can be finally obtained, and the coupling reaction in the synthesis method only needs to use low-cost cuprous chloride as a catalyst, so that the production cost is greatly reduced compared to a high-cost catalytic system in the prior art, and the synthesis method is more suitable for industrial mass production.

The application provides a catalyst and a preparation method and application thereof, and the catalyst comprises a carrier and an active metal component loaded thereon; the carrier comprises ZSM-5 zeolite and a binder, and the molar ratio of SiO2 / Al2O3 in the ZSM-5 zeolite is 15-50; the amount of strong acid centers on the outer surface of the catalyst is less than or equal to 10 mu mol / g; and the ratio of the saturated adsorption amount of p-xylene to the saturated adsorption amount of o-xylene of the catalyst is 3-20 under the condition of 400 DEG C. The catalyst provided by the application can catalyze the generation of benzene from toluene dealkylation under a medium-temperature condition, and the selectivity of benzene is good and the yield is high.

The application discloses a preparation method of an aluminum shielding tape surface conductive self-repairing coating. First, a clean aluminum shielding tape surface is obtained through an in-situ reduction / etching pretreatment method based on an aluminum salt / fluoride salt compound solution; second, a conductive / self-repairing dual-effect enhancer is prepared and introduced into a conductive / self-repairing coating synthesized by polyether amine, diisocyanate, a multiple active amine compound, p-xylene glycol and aniline; finally, the solid content of the coating is adjusted and sprayed on the clean aluminum shielding tape surface to obtain the conductive self-repairing coating. The application converts the Al2O3 film on the aluminum surface into a new substance Al, simultaneously constructs a regular porous structure, increases the bonding strength of the film layer, improves the adaptability and self-repairing efficiency of the coating in cable manufacturing and subsequent operation through the construction of a coating with multiple dynamic hydrogen bonds and imine bond synergistic effect, and realizes good conductive enhancement effect and rapid thermal self-repairing purpose of the coating by using isocyanate modified carbon nanotubes as the enhancer.

A fluidized bed device for coupling naphtha and methanol to prepare aromatics and co-produce olefins and its application method are provided. By using the device, under the action of a catalyst, naphtha reacts with methanol to generate product gas containing aromatics and light olefins as main components. The method can efficiently and selectively convert linear and branched aliphatic hydrocarbons into aromatics, while also increasing p-xylene production through aromatic methylation reactions, with the p-xylene content in the xylene mixture exceeding 75 wt %. The fluidized bed reactor achieves increased p-xylene production by controlling the progression of cascade reactions (naphtha→benzene / toluene→p-xylene). Additionally, it utilizes the methylation reaction of benzene / toluene with methanol to provide in-situ heat for the coupled naphtha-methanol aromatization process, thereby achieving autothermal balance.

The present application relates to the technical field of petroleum chemical industry, disclose a kind of method for improving the yield of toluene and xylene of reforming product oil, the system for improving the yield of toluene and xylene of reforming product oil.A kind of method for improving the yield of toluene and xylene of reforming product oil, the method comprises: under the alkylation reaction condition, in the presence of alkylation catalyst, C6-C7 fraction in reforming product oil is contacted with benzene and optionally hydrogen gas to carry out alkylation reaction;Wherein, alkylation catalyst includes MFI type zeolite, binder and optionally metal component, optionally metal functional adjuvant component.The method for improving the yield of toluene and xylene of reforming product oil has the advantages that toluene and xylene yield is high, and the effective separation of aromatic hydrocarbon and non-aromatic hydrocarbon under the condition of no extraction can be realized.

The invention discloses an application of p-xylene in prevention and control of straight-spot fly imagoes, and belongs to the technical field of agricultural planting research. Aiming at the problems that the yield of the chenopodium quinoa willd is seriously lost by the chenopodium quinoa willd and the existing prevention and treatment means only depend on chemical agents, the natural component p-xylene of the chenopodium quinoa willd is utilized to remarkably attract adults of the chenopodium quinoa willd, and the chenopodium quinoa willd attractant can be directly used for attracting the adults of the chenopodium quinoa willd and also can be used for preparing the attractant for the the concentration of p-xylene in the attractant is 0.1 mu g / mu L to 100 mu g / mu L. The application is green and environment-friendly, does not need to depend on chemical agents, provides a new way for green prevention and control of the adult straight-spot fly, broadens the prevention and control means of the chenopodium quinoa willd pests, and has important practical application value and scientific significance.

This invention relates to the field of terephthalic acid oxidation residue technology, specifically a high-efficiency treatment method for terephthalic acid oxidation residue, comprising the following steps: S1. Pretreatment; S2. Separation; S3. Evaporation and concentration; S4. Incineration; S5. Ash dissolution; S6. Filtration; S7. Sodium carbonate recovery; S8. Sodium carbonate recycling; S9. Bromine recovery and utilization; S10. Cobalt-manganese catalyst recovery; S11. Precipitate treatment; S12. Cobalt-manganese catalyst recycling. This application utilizes the waste heat or residual heat from the top of the xylene oxidation unit as a heat source to heat and concentrate the first filtrate. The acetic acid flash evaporator in the crystallizer serves as the heat source for evaporator V3 to evaporate and concentrate sodium carbonate, reducing process energy consumption and improving sodium carbonate recovery efficiency. The incineration unit heats the furnace body through external and internal incineration components, achieving efficient incineration of the material, greatly increasing the material's heating efficiency, and improving incineration efficiency and energy utilization.

The present application relates to the technical field of petroleum chemical industry, and discloses a method and system for generating dimethylbenzene. The method comprises: sequentially performing alkylation reaction and transalkylation reaction; wherein, under alkylation reaction conditions, alkanes are contacted with benzene and hydrogen to perform alkylation reaction; under transalkylation reaction conditions, C9+ heavy aromatic hydrocarbons, toluene and hydrogen from the alkylation reaction are contacted to perform transalkylation reaction; wherein, the alkanes are raffinate oil and / or hydrogenated raffinate oil; wherein, the weight ratio of the benzene to the alkanes is 1-9:1; wherein, the weight ratio of the C9+ heavy aromatic hydrocarbons to the toluene is 1-5:1. The method uses non-aromatic hydrocarbons (C5-C9), especially catalytic reforming or steam cracking by-product non-aromatic hydrocarbons and C9+ heavy aromatic hydrocarbons as raw materials, combines alkylation reaction and transalkylation reaction, and has the characteristics of high non-aromatic hydrocarbon conversion rate and high dimethylbenzene yield.

This application provides an isolation structure and its manufacturing method. The isolation structure includes a substrate, an isolation trench, a flexible dielectric layer, and a filling layer located within the substrate. The flexible dielectric layer is made of hydroxyl-para-xylene. The filling layer covers the surface of the flexible dielectric layer and fills the isolation trench. This flexible dielectric layer can reduce cracks caused by excessive stress in subsequent thermal processes and can adapt to spatial distortion caused by the expansion of residual gas in the isolation trench through deformation under thermal conditions, reducing damage to the substrate, enhancing the electron coupling ability of the HiK material, improving the yield of devices on the substrate, and reducing dark current in devices and white spots in display images from the source. In addition, this flexible dielectric layer does not contain metal, so it will not cause metal ion contamination to the substrate. It eliminates the need for an additional isolation layer, improving the performance of devices on the substrate while simplifying device structure and processes and reducing manufacturing costs.

The application relates to a synthesis method of a positive electric three-component covalent organic polymer and application thereof, and belongs to the technical field of sewage treatment. The method is as follows: 1,3,5-benzene triformylhydrazine is dissolved in an organic solvent dimethyl sulfoxide to obtain a solution A; 1,3-diamino guanidine hydrochloride is dissolved in the solution A to obtain a solution B; 2,3,5,6-tetrafluoro-p-xylene dicarboxaldehyde is dissolved in the solution B to obtain a solution C, and the preparation of the solutions is carried out in a constant-temperature oil bath; then, the orange wet gel is obtained by heating at 100 DEG C for 30s; the orange wet gel is placed in a dialysis bag for dialysis, the mixture is taken out for freezing, and then the freezing drying is carried out under vacuum to obtain the positive electric three-component covalent organic polymer. The synthesis method is simple, high in yield and fast in speed, the specific surface area of the positive electric three-component covalent organic polymer is large, the positive electric three-component covalent organic polymer has a hierarchical porous structure and rich reaction active sites, and can be used as a high-efficiency adsorbent to remove perfluorooctanoic acid in water.

The present invention relates to the use of a formulation which is liquid at ambient temperature comprising at least a mixture of benzene, toluene and xylene for the fixing and the release of hydrogen in at least one hydrogenation / dehydrogenation cycle of said formulation.The invention also relates to the use of said formulation for the transportation and the handling of hydrogen resulting from the steam cracking of petroleum products, of inevitable hydrogen resulting from chemical reactions, such as the electrolysis of salt, or of hydrogen resulting from the electrolysis of water.

This utility model discloses an integrated drying and gas purification machine for slide staining, including a machine body, a protective door hinged to the left side of the front end of the machine body, a placement platform in the middle of the bottom wall of the machine body, an electric heating wire on the upper side of the inner part of the machine body, a cavity in the lower side of the inner part of the machine body, an air inlet with an air inlet pipe in the left side of the upper end of the machine body, and an exhaust port on the right end of the machine body. It also includes a purification mechanism; the purification mechanism includes a filter chamber, a filter element, a sealing door, and a fixing component. The filter chamber is located on the right side of the inner part of the machine body, and the filter element is placed inside the filter chamber. A sealing door is hinged to the upper side of the top wall of the filter chamber. The fixing component is located inside the filter chamber and is used to fix the filter element. This integrated drying and gas purification machine for slide staining optimizes the driving method, improves the stability of the filter element during purification, and ensures the purification effect of xylene.

The utility model provides a bypass external reformate heat exchange system for an aromatic hydrocarbon combination unit. The bypass external reformate heat exchange system comprises a reformate heat exchange pipeline and a reformate tower, the reformate heat exchange pipeline is sequentially connected with a reformate steam heater and a xylene deoxidation tower, and the front path of the reformate steam heater is connected with an external reformate pipe section; an external reformed oil supplementing heat exchanger is connected to the external reformed oil supplementing pipe section; the external reformate heat exchanger is connected with an outlet pipeline of the reformate tower; an outlet of the reformate heat exchange pipeline is connected to the reformate tower; the inlet of the air cooler at the top of the reformate tower exchanges heat with reformate supplemented outside the N7 boundary area, and the heat is recycled, so that the aim of saving energy consumption can be fulfilled.

The invention belongs to the field of secondary resource recovery, and particularly relates to a preparation method of COF-OMe / CS aerogel, the preparation method comprises the following steps: S1, uniformly dissolving 2, 5-dimethoxy terephthalaldehyde in an acetonitrile solution to obtain a solution A; uniformly dissolving chitosan in a glacial acetic acid solution to obtain a solution B; mixing and uniformly dispersing the solution A and the solution B, standing at room temperature, and freeze-drying to obtain DMTA / CS aerogel; s2, uniformly dispersing 1, 3, 5-tri (4-aminophenyl) benzene in a mixed solution of acetonitrile and glacial acetic acid to obtain a solution C; dMTA / CS aerogel is added into the solution C, standing is carried out at the room temperature, and COF-OMe / CS hydrogel is prepared; and S3, preparing the COF-OMe / CS aerogel. The aerogel prepared through the method can be suitable for rapid separation and recovery of gold in the acid leaching solution, and waste utilization is achieved.

The utility model relates to the related technical field of chemical production, and discloses a mixing machine for xylene production and processing, which comprises a mixing tank, the top of the mixing tank is fixedly connected with a fixing frame, the fixing frame is fixedly connected with a feeding tank, the bottom of the feeding tank is fixedly connected with a filling tank, and the inner wall of the filling tank is internally provided with a plurality of groups of discharge holes which are circumferentially distributed at equal intervals. According to the utility model, the piston plate which ascends and descends in a reciprocating manner and the filling tank are matched with each other, so that quantitative filling of a methyl raw material is realized, and further, accurate control of a benzene raw material and a methylation raw material is realized; and a continuous upward flow is formed in the mixing tank, so that continuous up-and-down circular flow mixing of the raw materials in the mixing tank is realized, all-directional rapid stirring of the raw materials in the mixing tank is accelerated, and the practicability of the equipment is improved.

The application discloses a preparation method of regenerated polyester tourmaline antibacterial cloud wool, and relates to the technical field of cloud wool.The application is characterized in that: firstly, a silane coupling agent is used to modify tourmaline, and amino groups are introduced on the surface of the tourmaline to provide active sites for subsequent preparation of nano titanium dioxide; then, the modified tourmaline is added into a titanium dioxide sol, and nano titanium dioxide is grown on the tourmaline in situ through a sol-gel method to obtain a nano titanium dioxide / tourmaline composite carrier; then, the amino groups on the surface of the nano titanium dioxide / tourmaline composite carrier which are not involved in coordination are further activated, and the activated amino groups are allowed to react with p-xylene dicarboxaldehyde to load a Schiff base structure on the surface of the nano titanium dioxide / tourmaline composite carrier to prepare a novel antibacterial agent; the Schiff base structure is anchored on the surface of the composite carrier through a covalent bond, organic antibacterial components are immobilized, and the antibacterial performance is further improved; finally, the novel antibacterial agent is blended with regenerated polyester to prepare regenerated polyester tourmaline antibacterial cloud wool through wet spinning, so that the cloud wool has long-acting and high-efficiency antibacterial effect.

The application discloses a kind of molecular sieve-based microsphere fluidized bed catalyst and its preparation method and application.The catalyst includes transition metal modified molecular sieve, molecular sieve selects at least one in ZSM-5, ZSM-11, ZSM-12, Silicate-I@ZSM-5, Silicate-I@Y, Silicate-I or Silicate-II type molecular sieve, its outer surface Si / Al molar ratio is greater than 250, bulk Si / Al molar ratio is 30~250;Transition metal is selected from at least one in Mn, Cu, Co or Ni.The catalyst of the application is used in the reaction of aromatic selective shape methylation preparation p-xylene, significantly reduces the abrasion of catalyst, improves the conversion rate of toluene and the selectivity of p-xylene.

The present application relates to a fragrance composition reproducing the fragrance of white lotus and a skin external composition and a fragrance product containing the fragrance composition reproducing the fragrance of white lotus, and particularly relates to a fragrance composition reproducing the fragrance of white lotus with excellent preference by adding 2-phenylethanol to pentadecane, p-xylene, heptadecane, sabinene, limonene, myrcene, alpha-terpineol, etc. analyzed by SPME method. The fragrance composition provided by the present application contains pentadecane, p-xylene, heptadecane, sabinene, limonene, myrcene, alpha-terpineol, etc. which are main components of the fragrance of white lotus, and also contains 2-phenylethanol, thereby reproducing the fragrance of white lotus and improving the preference of the fragrance.

The invention discloses a start-up optimization method for an aromatic hydrocarbon combination unit, and belongs to the technical field of petrochemical engineering accessories. Comprising the following steps: S1, sequentially connecting a reformate tower, a stripping tower, a redistillation tower, an adsorption feeding tank, an extract tower and a p-xylene tower to extract a PX product; s2, leading out a first reflux pipeline between the stripping tower and the redistillation tower, and connecting the first reflux pipeline to an adsorption feeding tank; s3, in a start-up preheating stage, feeding a material at the bottom of the stripping tower to an adsorption feeding tank through a first reflux pipeline, synchronously heating the redistillation tower and the p-xylene tower at the moment, and heating the redistillation tower, the stripping tower and the extract tower in a peak shifting manner; and S4, after preheating is finished, closing the first reflux pipeline, recovering the material to be treated by the redistillation tower, feeding the material into the adsorption feeding tank, and continuously producing PX according to the flow of S1. Through process optimization, the core problems that the C8 circulation temperature rise is blocked and the thermal joint pressure difference is difficult to establish in the start-up stage are effectively solved, the operation steps are simplified, the risk of manual misoperation is reduced, the start-up period is remarkably shortened, the energy consumption is reduced, and safety and economic benefits are achieved.

The invention discloses a microwave crystallization preparation method of a transition metal nitride ultrathin nanosheet, which comprises the following steps: (1) dissolving a transition metal salt and Li3N in an o-xylene solution, then adding an ethylenediamine solution, fully stirring, heating the solution, and carrying out microwave crystallization to obtain a precursor solution; and carrying out centrifugal collection, washing and vacuum drying to obtain the amorphous transition metal nitride nanosheet. The transition metal salt is WCl < 6 >, VCl < 3 > or MoCl < 5 >; and (2) in a nitrogen atmosphere, the amorphous transition metal nitride nanosheet is subjected to rapid microwave heating, and the highly crystallized transition metal nitride nanosheet is obtained. The preparation process of the TMN nanosheet with the surface-enhanced Raman effect, provided by the invention, has very strong controllability, the thickness of the prepared nanosheet is about 1-2nm, the phenomenon of sintering or aggregation is avoided, and the TMN nanosheet with the surface-enhanced Raman effect has an outstanding surface-enhanced Raman spectrum effect.

The application discloses a method for preparing aromatic hydrocarbons by coupling conversion of carbon monoxide and polyolefins, and belongs to the technical field of polyolefin plastic conversion and recycling. The method uses carbon monoxide and polyolefin plastics as reaction raw materials, and a bifunctional catalyst composed of metals, metal oxides and molecular sieves as a catalyst to perform a conversion reaction. Since the carbon monoxide can come from carbon resources such as coal, biomass and natural gas, the reaction process can not only realize optimal utilization of carbon resources, but also change waste polyolefin plastics into treasure, realize high-value utilization, generate high-value-added aromatic hydrocarbon products, has high product yield and product selectivity, the aromatic hydrocarbon yield can reach 50-80%, the proportion of benzene, toluene and xylene in the aromatic hydrocarbons is greater than 60%, and the catalyst can be reused after simple regeneration treatment. The method is a new technology for comprehensive utilization of polyolefin waste plastics and utilization of carbon monoxide, and has good application prospect.

The utility model discloses an improved nitrogen supercharging device for synthesizing durene through alkylation of unsym-trimethylbenzene and methanol, which relates to the field of piston type booster pumps and comprises a transverse pipe, a vertical pipe protruding upwards is integrally formed above the outer wall of the transverse pipe, and the inner wall of a top opening of the vertical pipe is in threaded connection with a threaded connector. The threaded connector penetrates to the position above the vertical pipe, a sealing ring is installed at the butt joint position of the vertical pipe and the threaded connector, a hydraulic push cylinder is installed at the top of the threaded connector through a flange piece, a piston plate is installed at the bottom end of a piston rod part of the hydraulic push cylinder, and the hydraulic push cylinder is located in an inner cavity of the vertical pipe. One-way mechanisms are installed at the two ends of the inner wall of the transverse pipe. By arranging the one-way mechanism with the arc-shaped plate, the problem of abrasion caused by reciprocating motion of the ball sealer can be effectively solved, and the problem that the pressurizing effect is reduced further can be solved through the design of the one-way mechanism.

The application discloses a lithium salt particle size measuring method, and belongs to the technical field of material measurement. The measuring method comprises the following steps: step S1: obtaining a lithium salt powder to be measured; step S2: under the condition that the dew point temperature of a measuring environment is less than or equal to-45 DEG C, dispersing the lithium salt powder in a dispersion medium to form a lithium salt suspension; measuring the particle size of the lithium salt in the lithium salt suspension by using a particle size measuring device to obtain the particle size of the lithium salt powder; wherein the dispersion medium is selected from at least one of n-heptane, n-dodecane, n-undecane, n-decane, n-hexane, toluene, xylene, anisole and butyl butyrate. The lithium salt particle size measuring method is particularly suitable for the particle size measurement of hygroscopic / dissolvable samples, has high measurement precision and good repeatability, and the relative standard deviation (RSD) is less than 2%.

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 invention relates to a protective coating and a preparation method and application thereof.The preparation method of the protective coating comprises the following steps that 1, a disilane coupling agent, a monosilane coupling agent containing carbon-carbon double bonds, ethyl alcohol, water and an optional pH regulator are mixed, the volume ratio of the disilane coupling agent to the monosilane coupling agent containing the carbon-carbon double bonds is (3-10): 1, and the mixture is stirred to be uniform; a composite silane solution is obtained; (2) mixing a monosilane coupling agent containing carbon-carbon double bonds, ethanol, water and an optional pH regulator to obtain a monosilane solution; and (3) dip-coating the base material subjected to alkali treatment with the composite silane solution prepared in the step (1), drying for the first time, dip-coating the base material with the monosilane solution prepared in the step (2), drying for the second time, and depositing a poly-p-xylylene layer to form the protective coating, the binding force between the protective coating and the base material is high, the adhesion effect on the base material is good, and the stability between batches is good.

The application provides a pitch resin-based hard carbon negative material and a preparation method thereof, and belongs to the technical field of sodium ion battery negative materials. First, naphthalene, p-xylene glycol and p-methyl benzene sulfonic acid are mixed and subjected to a condensation reaction to obtain pitch resin; then, the pitch resin is sequentially subjected to a curing reaction, ball milling treatment and carbonization treatment to obtain a carbonized precursor; finally, the carbonized precursor and pitch are mixed and subjected to calcination treatment to obtain the pitch resin-based hard carbon negative material. The pitch resin-based hard carbon negative material prepared by the application has excellent electrochemical performance, the initial reversible specific capacity is greater than or equal to 320 mAh / g, the initial coulombic efficiency is greater than or equal to 92%, the discharge capacity is high, and the low-voltage platform capacity accounts for more than 75% of the total discharge capacity.

The present invention relates to the technical field of separation of direct coal liquefaction oil, and provides a method for separating and purifying monocyclic aromatic hydrocarbons from direct coal liquefaction oil. The method comprises: (1) performing fractional distillation and composition analysis on direct coal liquefaction oil to determine a fraction having the highest content of monocyclic aromatic hydrocarbons; (2) removing low-carbon alkanes and cycloalkanes from a selected fraction by means of column chromatography; (3) separating toluene, a monocyclic aromatic hydrocarbon mixture, and high-carbon alkanes by means of an atmospheric and vacuum distillation column; (4) purifying ethylbenzene from the monocyclic aromatic hydrocarbon mixture by means of an extractive distillation column; and (5) purifying p-xylene by means of a solvent recovery column. The separation method provided by the present invention can make full use of the composition characteristics of direct coal liquefaction oil to obtain two or three high-purity monocyclic aromatic hydrocarbon monomers at a time without introducing additional chemical reaction steps, showing significant economic and environmental benefits.

The invention discloses a refining blending tank feeding monitoring system and method, and the system comprises a feeding monitoring system which is connected with a feeding monitoring control module, a feeding data collection module, a feeding data processing module, a feeding simulation parameter module, and a feeding intelligent control blending module. The feeding monitoring control module comprises a paraxylene input module, a petroleum raw material input module, an ethylene input module, an intermediate input module, a caprolactam input module, a propylene input module, a flow data monitoring module, a wireless data transmission module and a monitoring data summarization module. According to the refining blending tank feeding monitoring system and method, monitored flow data is processed, including data receiving, data summarization, data calculation, data analysis and material flow data matching, different materials are input according to the matching proportion, the refining effect is improved through data simulation, and the refining effect is improved. And the situation of material waste is not easy to occur.

The invention provides an organic solar cell device prepared through electric field assisted solution shear coating and a preparation method, and belongs to the technical field of organic photovoltaic device preparation. An organic solar active layer based on a non-fullerene receptor is selected, and a halogen-free solvent o-xylene is adopted; in the active layer film deposition process, an external pulse polarization electric field is applied to control molecular arrangement and microcrystal morphology, so that the photoelectric conversion efficiency of an organic photovoltaic device without extra thermal annealing is improved. The preparation process of the organic solar cell is simplified, the method has wide commercial application prospects, and a detailed solution is provided for commercialization of the organic solar cell.