399 results about "Pressure reactor" patented technology

The invention discloses a purification method for removing quartz inclusion, which comprises the following steps: calcining a quartz sand raw material at high temperature for a certain time, then taking out and quickly putting into cold water for cold quenching; dehydrating quartz sand, feeding into a microwave reactor, heating to a set temperature, and keeping for a period of time; after the reaction is finished, cleaning the quartz sand with ultrapure water; filling the quartz sand into a high-temperature and high-pressure reactor, introducing supercritical carbon dioxide and hydrogen fluoride mixed gas, and keeping the temperature and the pressure for a period of time; and after the reaction is finished, discharging gas to obtain the high-purity quartz. Through two-stage heat treatment, a channel between gas-liquid inclusions in quartz particles and the outside can be efficiently opened, and meanwhile, the supercritical method ensures that impurities in the inclusions can be effectively dissolved out; the treatment time is short, the required temperature is low, the acid consumption is less than 10%, and the method has the advantages of high efficiency and low cost.

The invention discloses a CO2-oil near-miscible phase pressure acquisition system and method based on convective mixing, and belongs to the field of CO2 oil displacement. The system comprises a high-temperature and high-pressure reaction kettle, a temperature and pressure control system, a gas injection module, a liquid injection module and a monitoring control module. According to the method, the oil phase and the carbon dioxide are induced to form a convective mixing effect by dynamically regulating and controlling the injection flow rate, and when no interface of the system reaches a mutual convective mass transfer state, the system pressure corresponding to a phase interface disappearance critical point is directly recorded as a near-miscible-phase pressure value. The near-miscible pressure value obtained by the method is high in accuracy, the single test time is shortened to 1 hour, the test period is remarkably shortened, near-miscible pressure parameters under different temperature conditions can be measured in a short time, the CO2-oil near-miscible pressure can be measured by simulating a high-temperature and high-pressure environment of a stratum, and the method is suitable for popularization and application. And high-timeliness key phase state data support is provided for unconventional oil and gas reservoir development.

The invention relates to a textured KCu7S4 thermoelectric material and a preparation method thereof, and the method comprises the steps: sequentially adding a prepared KOH aqueous solution, CuCl2. 2H2O and Na2S. 9H2O into a high-pressure kettle, and fully stirring for dissolving; dropwise adding an N2H4.H2O aqueous solution into the mixed solution, fully stirring, sealing, transferring to a microwave chemical synthesis instrument, heating, keeping stirring, and reacting at a target temperature and self-generated pressure to generate a KCu7S4 nanowire preferentially growing along a [001] crystal orientation; and after the reaction is finished and natural cooling is carried out, a product is collected through centrifugation, full cleaning and vacuum drying are carried out, and then the KCu7S4 thermoelectric material with [001] preferred orientation in the direction perpendicular to the pressure direction is obtained through spark plasma sintering. According to the method, a surfactant and an organic solvent are not used, and macro, rapid, efficient and controllable preparation of the KCu7S4 nanowire is realized through a low-temperature, low-cost and low-energy-consumption microwave-assisted hydrothermal process.

The invention relates to the technical field of fractionation of lignocellulose biomass, and discloses a method for fractionating lignocellulose biomass by using a eutectic solvent, which comprises the following steps: mixing betaine and malic acid, stirring, and cooling to room temperature after the reaction is finished to obtain a clear and transparent eutectic solvent; the method comprises the following steps: mixing crushed lignocellulose biomass with a deep-eutectic solvent, and putting the mixture into a high-pressure reaction kettle; acetone and n-butyl alcohol are mixed according to the volume ratio of 3: 2-4: 1, and an anti-solvent is prepared; the method comprises the following steps: slowly adding an anti-solvent into a mixture of the lignocellulose biomass and the eutectic solvent, carrying out ultrasonic treatment, and then carrying out suction filtration. The glass electrode pH meter is used for measuring the pH value of the recovered deep-eutectic solvent, and the newly prepared deep-eutectic solvent is added according to the pH value, so that the stability of the solvent performance can be effectively maintained, the deep-eutectic solvent always keeps a good fractionation effect in multiple times of recycling, the utilization rate of the solvent is greatly improved, and the production cost is reduced.

The invention discloses a high-pressure reaction kettle emergency discharge pre-arranged planning method, which comprises the following steps of: constructing a real-time monitoring network through a multi-physical quantity sensor, automatically generating a micro scene highly coupled with field disturbance by combining intelligent signal filtering, abnormal factor aggregation and parametric modeling, and realizing agile mapping of a historical optimal discharge strategy and adaptive parameter adjustment and optimization. The risk tolerance and the response rate are accurately evaluated by means of parallel simulation deduction; an actual discharge action is compared with simulation feedback, and if a significant deviation exists, a rapid reconstruction strategy is iterated to realize closed-loop safety management and control; according to the method, the accuracy, the self-adaptability and the safety of the release decision are improved, and the emergency prevention and control efficiency of the reaction kettle under the extreme working condition is improved.

The invention provides an ethylene maleic anhydride copolymer and a preparation and application method thereof, and the preparation method comprises the following steps: dissolving a maleic anhydride monomer in an organic solvent to form a uniformly dispersed solution system, and transferring the solution system into a high-pressure reactor; ethylene gas in a supercritical state is introduced into the solution system of the high-pressure reactor to form a uniform ethylene-maleic anhydride solution system, wherein the pressure of the ethylene gas in the supercritical state is 5-30 Mpa; adding a free radical initiator into the ethylene-maleic anhydride solution system, raising the reaction temperature, and carrying out solution polymerization reaction to obtain a reaction system; a precipitant is added into a reaction system to separate out the ethylene-maleic anhydride copolymer, ethylene and maleic anhydride in the ethylene-maleic anhydride copolymer alternately exist in the form that the molar ratio of ethylene to maleic anhydride is 1: 1, high-performance bonding composite resin can also be formed by blending the ethylene-maleic anhydride copolymer and polyethylene, and the high-performance bonding composite resin is suitable for the fields of adhesives, coatings, composite materials and the like.

The invention relates to a surface-modified polyanion positive electrode material and a preparation method thereof, and the preparation method comprises the following steps: (1) preparing a precursor aqueous solution containing a lithium source, a metal source, a phosphorus source and a fluorine source NH4F, and uniformly stirring and mixing; metal in the metal salt solution is selected from one or two of iron and manganese; (2) adding double complexing agents of citric acid and ethylenediamine tetraacetic acid into the solution in the step (1); (3) transferring the solution obtained in the step (2) into a high-pressure reaction kettle, and carrying out segmented hydrothermal reaction: nucleation is carried out for 2-4 hours at the temperature of 100-140 DEG C, and crystallization is carried out for 8-16 hours at the temperature of 160-200 DEG C; and (4) mixing the product with a graphene oxide solution, carrying out spray drying, and sintering in an inert atmosphere to obtain a target product. Nanocrystallization, uniform doping and morphology regulation of the material are realized through a controllable hydrothermal reaction, and the polyanion positive electrode material with high crystallinity and excellent electrochemical performance is prepared. The method is suitable for lithium ion batteries with high energy density and long cycle life.

The invention belongs to the technical field of oil exploitation, and relates to a drag reducer for fracturing and a preparation method thereof. The preparation method comprises the following steps: adding 1, 5-hexadiene-3, 4-diol and a catalyst into a high-pressure reactor, raising the temperature, introducing ethylene oxide, raising the temperature, carrying out a heat preservation reaction, stopping heating, and cooling to 50 DEG C or below; adjusting the pH value to 2-3 by using phosphoric acid, adding sulfamic acid, heating, preserving heat and reacting, and cooling to below 40 DEG C; the preparation method comprises the following steps: adding deionized water, 2-(trifluoromethyl) acrylic acid and methacryloylethyl sulphobetaine, stirring and dissolving, adjusting the pH value to 7-8, adding an initiator, heating and carrying out a heat preservation reaction to obtain a viscous liquid; and settling, centrifuging, cleaning and drying to obtain the product drag reducer. The drag reducer has the characteristics of high viscosity and high drag reduction rate.

The invention discloses a preparation method of a Zr-MOF nano material, which comprises the following steps: adding deionized water into a reaction mixture consisting of zircon salt, 4 ', 4', 4 ', 4'-(ethylene-1, 1, 2, 2-tetraalkyl) tetra ([1, 1 '-biphenyl]-4-carboxylic acid), an acid regulator and an organic solvent to form a mixed solution, heating and reacting in a high-pressure reaction kettle, and cooling to room temperature to obtain the Zr-MOF nano material. And centrifugally collecting and cleaning a product, and drying in a dark place to obtain the Zr-MOF nano material. According to the application of the Zr-MOF nano material in the water-based zinc-iodine battery, the Zr-MOF nano material and iodine are prepared into a composite material, then the composite material is prepared into electrode slurry, the surface of a stainless steel mesh is coated with the electrode slurry, and the electrode slurry is dried to serve as an electrode plate of the water-based zinc-iodine battery. The preparation process is simple, Zr-MOF nano-materials with different structures can be obtained by adjusting the deionized water content of the system, and the Zr-MOF nano-materials can be applied to an electrode plate of an aqueous zinc-iodine battery to improve the cycle performance of the battery.

The invention discloses a preparation method of a vacancy coupled nano tip material for electrochemical seawater uranium extraction, which comprises the following steps: slicing foamed nickel, performing ultrasonic treatment in acetone, ethanol, pure water and a hydrochloric acid solution in sequence, thoroughly washing with pure water, and drying for later use; the preparation method comprises the following steps: dissolving a cobalt source, urea and ammonium fluoride in pure water, transferring the solution into a polytetrafluoroethylene lining, then adding treated foamed nickel, reacting in a high-pressure reactor, taking out a material, washing with pure water, and drying; and then calcining the dried flaky material, and treating with Ar plasma after calcining to obtain the vacancy-coupled nano tip material. The Co3O4 nano tip array rich in oxygen vacancies grows on the surface of the foamed nickel, an enhanced electric field on the nano tip induces OH <-> in a solution outside an electrode surface interface to be enriched, a local alkaline pH protection layer is formed, and attachment and deposition of metal salt on the surface of the electrode are reduced.

The invention provides a preparation method of a hard carbon negative electrode material, which specifically comprises the following steps: uniformly mixing aromatic hydrocarbon-rich heavy oil with a catalyst and a halogenated cross-linking agent, carrying out halogenated cross-linking-polycondensation reaction in a high-temperature and high-pressure reaction kettle to preliminarily obtain halogenated cross-linked asphalt, further pre-oxidizing to obtain thermosetting cross-linked asphalt, and carrying out secondary pre-oxidation on the thermosetting cross-linked asphalt to obtain the hard carbon negative electrode material. And carrying out high-temperature carbonization by taking the thermosetting crosslinked asphalt as a hard carbon precursor to obtain the hard carbon negative electrode material. The catalyst is used for initiating a crosslinking reaction between the halogenated crosslinking agent and the aromatic hydrocarbon-rich heavy oil, the molecular structure of the aromatic hydrocarbon-rich heavy oil is effectively adjusted, a thermosetting precursor is further obtained through pre-oxidation, and the aromatic hydrocarbon-rich heavy oil is inhibited from tending to be structurally ordered in the carbonation process; and a hard carbon material with a disordered carbon microcrystalline structure is formed in the subsequent carbonization process. The prepared hard carbon is used as the negative electrode of the sodium-ion battery, the reversible specific capacity under the current density of 0.1 C reaches 360 mAh / g or above, the specific capacity under the large current density of 5 C reaches 200 mAh / g or above, and the hard carbon has stable cycle performance and good rate capability.

The invention provides a preparation method of an environment-friendly two-dimensional high-strength coating and a raw material recycling method, and the preparation method comprises the following steps: preparing trimesic acid, melamine, a solution A and a solution B into a reaction solution according to a proportion in a glove box, and putting the reaction solution into a high-pressure reaction kettle to react to form gel; and mixing the gel with ethanol, carrying out ultrasonic treatment, filtering, washing and drying to obtain faint yellow polymer powder, dissolving the powder in trifluoroacetic acid, and preparing film coatings with different thicknesses by adjusting the concentration of the solution. According to the raw material recovery method of the coating, an acid catalyst is used for hydrolysis, trimesic acid and melamine are recovered, and the recovery rate reaches 88.9% or above. The prepared coating material has the advantages of high strength, low density, excellent leakproofness and chemical corrosion resistance, raw material recycling is realized, the production cost is reduced, the green and environment-friendly requirements are met, and the coating material is suitable for light high-strength materials, protective coatings and other high-performance application fields.

The invention discloses a structural health monitoring method for a high-temperature and ultrahigh-pressure reactor based on an unmanned aerial vehicle platform, the unmanned aerial vehicle platform carries a non-contact thermal imaging module and a contact ultrasonic detection module, and the structural health monitoring method comprises the following steps: receiving and processing data from the non-contact thermal imaging module, identifying a suspected abnormal area on the surface of the reactor; generating a control instruction based on the identified suspected abnormal area, and guiding the unmanned aerial vehicle platform to move the contact type ultrasonic detection module to a corresponding position for contact type detection; and the data processing module is used for receiving and processing data from the contact type ultrasonic detection module so as to verify and evaluate the suspected abnormal area. According to the technical scheme provided by the invention, full-coverage structure health assessment can be carried out on the high-temperature and ultrahigh-pressure reactor through the remote unmanned aerial vehicle platform, and potential internal defects and surface abnormalities can be accurately identified.

The invention discloses ROS-responsive self-adhesive hydrogel and a preparation method and application thereof.The preparation method comprises the following steps that amine monomers, acid monomers, polyether and / or polyester, deionized water and an antioxidant are added into a high-pressure reaction kettle, the temperature is increased under the CO2 and / or inert atmosphere for a pressure maintaining reaction, then the temperature continues to be increased and vacuumized, and the ROS-responsive self-adhesive hydrogel is obtained; continuously reacting under a vacuum condition to obtain a polyamide elastomer; the preparation method comprises the following steps: dissolving a polyamide elastomer and a cross-linking agent I in deionized water, and reacting to obtain polyamide elastomer hydrogel; dissolving N-isopropylacrylamide, acrylic acid, a cross-linking agent II, an initiator, cerium oxide nanoparticles and silver nitrate in deionized water to obtain a prepolymer solution; the polyamide elastomer hydrogel is soaked in the prepolymer solution for polymerization, and the hydrogel is obtained. The hydrogel has a double-network structure, is good in biocompatibility, has temperature response and ROS response functions, and can control drug release and promote wound healing.

The invention relates to a preparation method and application of a hardness removal agent, and the method comprises the following steps: 1) alkali fusion reaction: mixing and fusing bauxite and NaOH to generate soluble sodium aluminate NaAlO2; 2) compounding silicon and aluminum: dissolving aluminum silicate in hot water, adding silica sol, stirring and mixing, and regulating the pH value to 11-12 by using NaOH; an aluminosilicate precursor gel is formed; 3) hydrothermal crystallization: transferring the aluminosilicate precursor gel into a high-pressure reaction kettle, and carrying out hydrothermal reaction to promote polymerization of a silicon-aluminum network; and 4) post-treatment: cooling aluminosilicate, centrifugally washing the aluminosilicate until the aluminosilicate is neutral, drying the aluminosilicate at 110 DEG C, and grinding the aluminosilicate to obtain a white powder product. A silicon-aluminum network structure of the hardness removal agent prepared by the method has regular pore channels, the highest calcium and magnesium removal rate can reach 90% or above, the hardness removal agent is high in anti-interference performance, is kept stable in a pH range of 6-12, is not influenced by common Cl <-> and SO4 < 2-> in water, and is high in stability.

The invention relates to a preparation method of a nickel-based alloy for a high-temperature ultrahigh-pressure reaction kettle, which comprises the following steps of: preparing a high-quality and high-purity nickel-based high-temperature alloy ingot by adopting a triple smelting process of (1) vacuum induction melting, (2) electroslag remelting and (3) vacuum consumable remelting; (4) homogenizing heat treatment is conducted, specifically, heat preservation is conducted for 24-48 h at the temperature of 1100- 5) hot working: keeping the temperature of the cast ingot at 980-1150 DEG C for 2-6 hours, and forging the cast ingot into a finished forge piece; and (6) heat treatment is conducted, specifically, after solution treatment is conducted on the forged piece at the temperature of 920-1050 DEG C, stabilization treatment is conducted at the temperature of 810-860 DEG C, heat preservation is conducted for 8-12 h at the temperature of 720-760 DEG C, then furnace cooling is conducted to the temperature of 620-650 DEG C, heat preservation is conducted for 8-12 h, by the adoption of the method, the purity and quality of the alloy cast ingot can be remarkably improved, precipitation of harmful phases is reduced, the structure performance of the alloy forged piece is optimized, the reliability and using performance of the alloy forged piece for the reaction kettle are improved, and the reaction kettle can be used for a long time under the high-temperature and ultrahigh-pressure complex working conditions.

The invention relates to an atmospheric pressure photo ionization rapid desolventizing device and method, and the device comprises a sampling valve which is installed on a sampling pipe of a high-pressure reactor and can be opened and closed according to a preset frequency; the atomizing unit is mounted on the sampling pipe at the downstream of the sampling valve and is used for atomizing a sample solvent; an inlet of the laval spray pipe is connected with an outlet of the sampling pipe, and an outlet of the laval spray pipe is led to a normal-pressure photo ionization area, so that a solvent is subjected to flash evaporation removal, and a product flows to the photo ionization area to realize ionization; wherein the Laval nozzle is provided with a temperature control system which is used for controlling the temperature of the Laval nozzle. According to the method, the solvent can be quickly removed, the integrity of thermal instability components is ensured, and the analysis accuracy is improved.

The invention relates to a method for microwave activation and pressure leaching of quartz sand, and belongs to the technical field of preparation of high-purity quartz sand. The method comprises the following steps: measuring the diameter of a gas-liquid inclusion in to-be-purified quartz sand, and counting the diameter D50 of the gas-liquid inclusion in the quartz sand; calculating the burst critical temperature T of the gas-liquid inclusion by taking the diameter D50 of the gas-liquid inclusion as the burst critical diameter D of the gas-liquid inclusion; the gas-liquid inclusion burst critical temperature T is used as the preset temperature of microwave activation self-boosting pressure leaching; the method comprises the following steps: adding to-be-purified quartz sand into an acid leaching agent of a pressurized reaction kettle, sealing, carrying out microwave activation self-pressurization pressurized leaching at a preset temperature under a microwave condition, cooling to room temperature at a constant speed, carrying out solid-liquid separation, and washing the solid with deionized water to obtain the high-purity quartz sand. According to the method, the preset leaching temperature is accurately selected according to the diameter D50 of the gas-liquid inclusion to realize microwave activation pressure leaching of the quartz sand, and the gas-liquid inclusion, internal impurities and lattice impurities can be deeply removed.

The invention relates to the fields of polyelectrolyte, reversed-phase colloid dispersion systems, nanoreactors, nanocrystals and the like, in particular to zinc cadmium sulfide nanocrystals prepared by taking a polyelectrolyte complex as a nanoreactor and a preparation method of the zinc cadmium sulfide nanocrystals. Carrying out ultrasonic treatment on the anionic polyelectrolyte and a solvent to form a reversed-phase miniemulsion colloid, then adding a soluble salt solution containing target metal ions, and continuously carrying out ultrasonic treatment to obtain an anionic polyelectrolyte reversed-phase miniemulsion colloid containing the target metal ions; performing ultrasonic treatment on the cationic polyelectrolyte and the solvent to form a reversed-phase miniemulsion colloid; adding a soluble sulfide solution, and performing ultrasonic treatment to obtain sulfide-containing cationic polyelectrolyte reversed-phase miniemulsion colloid; and mixing the two reversed-phase miniemulsion colloids, carrying out high-pressure nanocrystallization, putting the obtained product into a high-pressure reaction kettle, transferring the high-pressure reaction kettle to a drying oven, carrying out solvent heat treatment to obtain zinc cadmium sulfide nanocrystals with the size of 2-5 nanometers, and uniformly distributing the nanocrystals in the polyelectrolyte complex.

The present invention provides a method for preparing 1,2-pentanediol from D-xylose in one pot. In this method, water is used as the reaction solvent, formic acid is used as the dehydration catalyst, and Pt / mesoporous nitrogen-doped carbon spheres are used as the hydrogenation catalyst. In a high-pressure reactor under a hydrogen atmosphere, 1,2-pentanediol is prepared from D-xylose in one pot. The preparation process of the present invention is simple, the raw materials are easily available, the reaction process is environmentally friendly and pollution-free, and the catalytic system is relatively simple. The raw material conversion rate can reach 100%, and the highest yield of 1,2-pentanediol can reach 40.59%. Moreover, the Pt / mesoporous nitrogen-doped carbon spheres have good stability and can be recycled by simple filtration and drying, which can save resources and reduce costs, and have important application value and are suitable for industrial production and application.

The utility model discloses a high-pressure reaction kettle discharge pipe anti-blocking structure which comprises a mounting structure, an ultrasonic transducer and a driving structure, the mounting structure is arranged on one side of a discharge pipeline and comprises a mounting channel and a mounting part, the mounting channel is communicated with the interior of the discharge pipeline, and the mounting part is slidably arranged in the mounting channel; the ultrasonic transducer is mounted on the mounting piece; and the driving structure is connected with the mounting part and is used for driving the mounting part to slide in the mounting channel, so that the ultrasonic transducer is mounted on the inner wall of the discharging pipeline in an abutting manner. According to the high-pressure reaction kettle, adhesion and accumulation of materials in the pipeline can be effectively reduced, so that the risk of blockage of the discharge pipe of the high-pressure reaction kettle is reduced.

The invention relates to the field of biomedicine, and particularly provides bimetal MOFs with photo-thermal and anti-oxidation effects and a preparation method and application thereof.The preparation method comprises the following steps that 1, 4, 5, 8-naphthalene tetracarboxylic dianhydride and 4-amino-4H-1, 2, 4-triazole are dispersed in DMF, a reflux reaction is conducted at the temperature of 140-160 DEG C, and a DBPT organic ligand is obtained; the preparation method comprises the following steps: fully dissolving a DBPT organic ligand, anhydrous ferric chloride, anhydrous cupric nitrate and fluoboric acid in DMF at room temperature to obtain a reaction solution, carrying out ultrasonic treatment on the reaction solution, stirring until the reaction solution is completely dissolved, putting the obtained solution into a high-pressure reaction kettle, carrying out a heating reaction, and cooling to room temperature after the reaction is finished; and centrifuging the product, cleaning and drying to obtain the Fe / Cu-MOFs. The preparation method disclosed by the invention is simple to operate, and the prepared bimetallic MOFs have good photo-thermal and oxidation resistance and can be applied to multiple treatment requirements of bacterial infection and inflammation environment regulation and control.

The utility model relates to the field of reactors, in particular to a high-temperature and high-pressure reactor feeding platform in ethylene glycol synthesis. The reactor comprises a reactor body, the reactor body is provided with a feeding port, the reactor further comprises a chassis, a mounting seat is arranged on the chassis, a first lifting assembly is arranged on the mounting seat, a second lifting assembly is arranged on the first lifting assembly, a top plate is arranged on the second lifting assembly, and a feeding assembly is arranged on the top plate. The top plate is used for carrying people; a mounting plate is arranged on the chassis, and a push-pull assembly is arranged on the mounting plate and used for pushing and pulling the chassis; therefore, the problems that an existing reactor often needs to build a working table, the occupied space is large, the reactor is not easy to transfer, if other places of the reactor are observed or charged, the working table needs to be enlarged, and the cost is invisibly increased can be effectively solved.

This invention relates to the field of nanofiber technology, and particularly to a quaternary ammonium-modified PPACE-Cl nanofiber, its preparation method, and its application. S1. Preparation of PAN electrospun nanofibers: Polyacrylonitrile, polyvinylpyrrolidone, and carboxylated multi-walled carbon nanotubes are stirred with N,N-dimethylformamide at room temperature for 6-12 h to obtain a uniform and transparent spinning solution. The resulting spinning solution is then placed in a 10 mL syringe and spun in an electrospinning machine to obtain PAN / PVP / MWCNT-CCOH nanofibers. The obtained nanofibers are then placed in hot water at 60-100°C to remove PVP, yielding PAN / MWCNT-COOH nanofibers. S2. Preparation of nitrogen-enriched modified PPACE nanofibers: The PAN / MWCNT-COOH nanofibers prepared in step S1 are placed in an aqueous solution of polyethyleneimine in a high-pressure reactor to obtain modified PPACE nanofibers. S3. Preparation of quaternary ammonium-modified PPACE-Cl nanofibers. The quaternized PPACE-Cl nanofibers of this invention will prepare nanofibers with a surface rich in positive charge, thereby achieving the effect of AuCl4 exhibiting a negative charge in aqueous solution. ‑ Selective enrichment and adsorption are carried out.

This invention discloses a method for preparing a Pd-BiOI / ordered mesoporous carbon electrode, comprising: step S1, preparing an ordered mesoporous carbon electrode material using a soft template method under low-temperature hydrothermal conditions; step S2, using a three-electrode system, with the ordered mesoporous carbon electrode material as the working electrode, a platinum sheet as the counter electrode, and a saturated calomel electrode as the reference electrode, using a hydrochloric acid solution containing PdCl2 as the electrolyte, and depositing a Pd / OMCs electrode using a multi-step current pulse method; step S3, adding KI to ethylene glycol and dissolving it by magnetic stirring; then adding Bi(NO3)3•5H2O and stirring magnetically to obtain a mixture a; placing the mixture a and the Pd / OMCs electrode prepared in step S2 in a high-pressure reactor lined with polytetrafluoroethylene, and performing a hydrothermal reaction under high-temperature conditions, followed by rapid cooling after the reaction, removing the electrode and rinsing it with distilled water to obtain the Pd-BiOI / OMCs electrode. The Pd-BiOI / ordered mesoporous carbon electrode prepared by this invention has both excellent electroadsorption and visible light photocatalytic performance, and is expected to become an ideal electrode material integrating electroadsorption and photocatalysis.

The application belongs to the technical field of tertiary oil recovery, and relates to a heavy oil viscosity reducer and a preparation method and application thereof.The preparation method is as follows: p-nonyl phenol, 1-(4-fluorophenyl)piperazine, 40wt% formaldehyde and water are added into a reactor, stirring is carried out, temperature is increased to reflux, and temperature is kept;temperature is reduced to below 40 DEG C, extraction is carried out, the obtained product is placed in a high-pressure reactor, sodium hydroxide solid is added, nitrogen is introduced, vacuum is drawn, temperature is increased, vacuum drawing is stopped, ethylene oxide is slowly introduced, temperature is increased, and temperature is kept;viscous liquid is obtained through reduced pressure distillation, the obtained product is placed in a high-pressure reactor, pH is adjusted to 3-4, aminosulfonic acid powder is added, stirring and heating are carried out, temperature is kept, and the obtained product is cooled to below 40 DEG C;ethanolamine is added, pH is adjusted to 7-8, and the heavy oil viscosity reducer is obtained.The viscosity reducer has the advantages of low surface tension, low interfacial tension, low critical micelle concentration and good viscosity reduction effect.

The invention discloses an injection and production system and method for improving the CO2 huff and puff effect of a shale and compact oil and gas reservoir based on high-pressure pressure-maintaining soaking, and belongs to the technical field of shale and compact oil and gas reservoir development. The constant temperature device comprises a CO2 intermediate container, an experimental oil intermediate container and a high-temperature and high-pressure reaction kettle which are arranged in a constant temperature box; the CO2 gas cylinder is respectively communicated with the CO2 intermediate container, the experimental oil intermediate container and the high-temperature and high-pressure reaction kettle; and both the CO2 intermediate container and the experimental oil intermediate container are communicated with the constant pressure pump. According to the method, the reservoir energy can be effectively maintained by adopting a high-pressure pressure-maintaining soaking technology, the problem of poor recovery efficiency caused by pressure drop in the CO2 huff and puff process can be effectively solved, the oil displacement effect of CO2 in the shale reservoir is remarkably improved, and the recovery degree of each turn can be remarkably improved.

This invention discloses a method for the synthesis of furfural and ethanol from green coconut (Cocos nucifera L.) husk. The method involves chemical reaction for furfural production and a biological fermentation for ethanol synthesis. In the chemical step, the green coconut husk undergoes acid hydrolysis in a high-pressure reactor, yielding furfural. The residual waste from this step is then utilized as a substrate for fermentation by Saccharomyces cerevisiae, producing ethanol. The integrated approach efficiently converts the cellulosic and hemicellulosic components of the green coconut husk into two industrially valuable compounds, furfural and ethanol, from a single agricultural waste stream. The invention provides a cost-effective and environmentally sustainable method for resource utilization and waste reduction.

Techniques are described herein for using a high-pressure reactor to separate clean water from dirty water without filtration and to extract and concentrate contaminants from dirty water for use as a fuel. In particular, techniques and systems are described for separating water from hydrocarbon contaminates, other BTU-laden compounds, and dissolved minerals, while also boiling water and condensing the resulting steam into distilled water. In addition, system in which the described techniques are performed can be used as a high-pressure pump for moving the separated hydrocarbon contaminates forward into other processes, such as a high-pressure reactor or incinerator.

Device and Method for Maintaining a Pressure Reactor Containment The present invention relates to a maintenance device (10) for a pressure reactor containment, comprising a connecting fitting (120) on a wall (20) of the containment, said connecting fitting (120) extending in a longitudinal direction (X) between an internal base (55) and an external base (60) and comprising: a) an insertion portion (65) intended to be positioned in a receiving recess (90) machined in the wall (20) of the containment, b) an external portion (70) intended to be positioned outside (30) of the containment and comprising a support element (105) intended to be placed opposite the wall (20) of the containment on a periphery (P) of the receiving recess (90), a fluid conduit (75) extending through the connecting fitting (120), a groove (88) of reception of a compression seal (100) being provided in the insertion portion,the maintenance device (10) comprising means for fixing said connecting branch (120) to the wall (20). Figure for the abbreviation: 4,