611 results about "Reaction rate" patented technology

The invention discloses a reaction kettle device for synthesis of an iron phosphate material, and particularly relates to the technical field of synthesis of battery materials, and the device comprises a kettle body, a driving motor, a transmission disc and a turbo-type paddle. A sealing cover is arranged at the top of the kettle body, a driving motor is connected with a rotating shaft, an anchor blade is arranged below the rotating shaft, and the bottom realizes turbine blade lifting and sleeve guide limiting through transmission of a piston cavity and compressed gas; and a ratchet wheel on the outer wall of the rotating shaft is meshed with a pawl in the transmission disc in a one-way mode, and intermittent wall scraping is achieved. According to the device, dead angles are broken through synergistic stirring of the double blades, the mixing uniformity and the reaction rate are improved, materials adhering to the wall are efficiently removed through intermittent wall scraping, the stable reaction environment is guaranteed through multiple sealing, the structure is flexible to adjust, maintenance is convenient and fast, efficient and high-quality synthesis of the iron phosphate material can be achieved, and the device is suitable for industrial large-scale production.

The invention relates to the technical field of nano particle heterogeneous reaction kinetic research, in particular to a nano single particle reaction rate measuring system and method based on optical surface wave dark field imaging. The method comprises the following steps: preparing a nano single particle sample; the humidity of the environment where the nano single particles are located is adjusted; starting a heterogeneous reaction of the nano single particulate matter, performing in-situ dark field imaging on the nano single particulate matter in the reaction process, and collecting scattering hot spot imaging data under different reaction times and different humidity; and based on the acquired imaging data, the reaction rate of the nano single particulate matter is inversed in combination with a kinetic model. According to the invention, the defects in the existing nano-particle reaction rate measurement technology can be overcome, and the reaction rate of a single particle as low as 50 nanometers in the heterogeneous reaction process can be accurately measured and inverted under the high-humidity standard atmospheric pressure condition.

The invention belongs to the field of temperature control, and particularly relates to a reaction kettle temperature control method and system for synthesizing isothiocyanate. The method comprises the following steps: acquiring temperature, material concentration and coolant flow in a kettle in real time, calculating a reaction rate estimated value through a nonlinear mixed model, and calculating an active factor by combining catalyst input time and an index inactivation function; performing unequal weight combination on the three parameters to generate a scheduling variable, and calculating a current value and a second-order difference value of the scheduling variable; selecting a reference state space model according to the current value of the scheduling variable, and correcting the matrix by using a second-order difference value to obtain an LPV model; constructing a quadratic programming optimization problem, wherein an objective function comprises a temperature tracking error penalty term and a control input increment penalty term for adjusting the weight; when the temperature deviation exceeds the threshold value continuously, a control input value penalty term is added; and solving an optimization problem and outputting a first element of the control sequence to a temperature control execution mechanism. According to the invention, the temperature control precision and stability of the isothiocyanate synthesis reaction kettle are improved.

The invention relates to a method for preparing lithium sulfide at low temperature by microwave molten salt assisted carbon disulfide-lithium salt reaction, and belongs to the technical field of key materials of lithium-sulfur batteries and solid-state batteries. The technical problems of high energy consumption, difficulty in inhibiting by-products, insufficient purity and crystal phase stability, difficulty in continuous amplification and the like in the existing lithium sulfide preparation process are solved. Comprising the following steps: step 1, performing crushing, screening and grading treatment on lithium source powder; step 2, placing the treated lithium source powder and molten salt in a closed reactor, and introducing CS2 in a gas or liquid form; 3, applying microwave radiation, and reacting at a gas-solid-liquid multiphase interface to generate lithium sulfide; and 4, cooling the material after the reaction to room temperature, separating and recovering the fused salt to obtain the lithium sulfide powder. The method is low in reaction temperature, low in energy consumption, high in reaction rate, high in product purity and suitable for continuous and industrial production.

The invention relates to the technical field of UV (ultraviolet) pouring sealants, in particular to a UV pouring sealant for lamp beads and a preparation method thereof, and the UV pouring sealant for the lamp beads is prepared from the following components in percentage by weight: 30 to 40 parts of oligomer, 10 to 15 parts of trifunctional acrylate monomer, 40 to 60 parts of single-tube acrylate monomer and 0.2 to 5 parts of photoinitiator. After the curing agent is used, the reaction speed and the crosslinking density are improved, the reaction speed and the water resistance are greatly improved, the anti-yellowing performance is further improved, deep curing can be realized, and the yellowing resistance is improved.

The invention relates to the field of polyimide films, and discloses a catalytic polyimide film preparation method, which comprises: S1, preparing a prepolymer, dissolving a fluorine-containing diamine monomer in a polar solvent, placing in a reaction kettle, adding an aromatic dianhydride monomer at a low temperature of 0-10 DEG C, stirring, mixing, and reacting to generate a polyamide acid solution; s2, primary catalysis: adding an organic base catalyst into the polyamide acid solution prepared in the step S1; s3, second-stage catalysis: after the step S2 is completed, adding a coordination type organic basic catalyst into the first-stage catalyst; and S4, film formation and post-treatment. Amidation and ring-closure reactions are promoted in stages through the synergistic effect of the double catalysts, the reaction rate matching performance is remarkably improved, accurate control over molecular chains is achieved, a high-purity polymer matrix with uniform molecular weight distribution and complete ring closure is obtained, and the structural uniformity and mechanical strength of the film are fundamentally improved; the structure defect caused by incomplete reaction under a traditional single catalytic system is avoided.

The invention relates to a method for predicting the carbon residue value of heavy oil hydrogenation generated oil, and the method comprises the following steps: obtaining a heavy oil raw material, and obtaining the characterization data of the characteristic properties of the heavy oil raw material; obtaining hydrogenated generated oil to be detected, wherein the hydrogenated generated oil to be detected is obtained by carrying out hydrogenation carbon residue removal reaction on the heavy oil raw material; substituting the characterization data of the characteristic properties of the heavy oil raw material into the characteristic factor equation of the hydrogenation carbon residue removal reaction, and calculating the characteristic factor of the hydrogenation carbon residue removal reaction; substituting the characteristic factor into the characteristic factor-reaction rate constant relation equation of the hydrogenation carbon residue removal reaction, and calculating the reaction rate constant of the hydrogenation carbon residue removal reaction; and substituting the reaction rate constant into the reaction kinetic equation of the hydrogenation carbon residue removal reaction, and calculating the predicted carbon residue value of the hydrogenation generated oil to be detected. By adopting the method disclosed by the invention, the carbon residue value of the heavy oil hydrogenation generated oil can be accurately predicted.

The invention relates to the technical field of potassium formate preparation, in particular to a device and method for preparing potassium formate through potassium hydroxide, surrounding feeding, compression forming and double cutting are integrated, potassium hydroxide powder enters a surrounding mechanism through an input pump, raw materials are randomly fed into a compression shell, accumulation is effectively avoided, a compression piston is driven to ascend and descend in a reciprocating mode, and the potassium formate is prepared. And the powder is extruded into a compact cylinder, and feeding and compression are synchronously controlled, so that the continuous process is ensured. The double-cutting system accurately controls the height of a movable blade through an adjusting support so as to lock the total volume of raw materials, an adjustable blade and a bottom supporting base alternately move, a column body is divided into multiple sections of small columns, the reaction surface area is increased through geometric progression, and accurate regulation and control of the reaction rate are achieved. According to the device, quantitative control of the feeding amount, dynamic adjustment of the reaction rate and cleaning of the operation environment are achieved, and the accuracy and safety of potassium formate preparation are improved.

The invention discloses a method for purifying water by catalyzing ozonation through a nitrogen-fluorine co-doped carbon-loaded cobalt nanomaterial. Co-ZIF-8 and polytetrafluoroethylene (PTFE) are respectively used as a precursor and a fluorine source, and the nitrogen-fluorine co-doped carbon-loaded cobalt nano-catalyst is successfully prepared through an etching synchronous doping strategy. The composite material can be used for catalyzing ozone to degrade organic pollutants in water. Nitrogen doping can promote formation of a metal-nitrogen coordination structure, and decomposition of ozone on the surface of the catalyst is facilitated. Fluorine modification can significantly enhance the hydrophilicity of the composite material and accelerate the solid-liquid reaction of ozone in a solution and a catalyst interface, and the strong electron withdrawing effect of fluorine can effectively adjust the electronic structure of the catalyst and promote the generation of strong oxidizing active oxygen species, thereby achieving efficient and rapid removal of pollutants. The water treatment method solves the problem of low ozone utilization rate in a conventional catalytic ozonation process, has the advantages of high reaction rate and stable treatment effect, and has a good application prospect.

The invention relates to the technical field of environmental protection and resource utilization, and discloses a collaborative activation method and system for CO2 mineralized solid waste, and the method comprises the following steps: carrying out on-line multi-dimensional characterization on the solid waste to generate a feature vector; dynamically generating an optimal activation parameter based on a multi-objective optimization model; sequentially executing high-voltage electric pulse and ultrasonic-assisted multi-stage physical activation; synchronously implementing component self-adaptive chemical activation and microwave selective thermal activation; and finally, efficient mineralization is completed in a high-pressure and high-concentration CO2 environment. The system integrates representation, decision, execution and reaction modules, and realizes full-process closed-loop control. Through multi-field cooperation and intelligent regulation, the solid waste mineralization reaction rate, the carbonization rate and the energy efficiency are improved, formation of a passivation layer is inhibited, and the technology universality and the industrial feasibility are enhanced.

The utility model discloses an intermittent negative pressure lithium carbonate reaction device, including the reaction kettle of sealed arrangement, the reaction kettle is from inside to outside and is equipped with reaction cavity, heat preservation layer in proper order, the reaction kettle bottom is provided with the unloading valve of reaction cavity intercommunication, still be equipped with high lithium solution liquid inlet pipe, sodium carbonate solution feed pipe on the reaction kettle lateral wall for feeding to the reaction cavity, still include negative pressure spare, the negative pressure spare sets up the lateral wall of reaction kettle for intermittent extraction reaction cavity in the reaction process water vapor, and when negative pressure spare intermittent extraction reaction cavity in water vapor reaches the stop negative pressure of preset value, through the negative pressure spare extraction reaction cavity in water vapor, improve reaction solution concentration, accelerate the reaction rate, and through the negative pressure spare intermittent extraction liquid in the lithium deposition process also reduces the risk that one -time extraction water vapor will take out Li+ in the solution.

The invention discloses a method and system for continuously synthesizing 2, 4-dichloroacetophenone, and the method for continuously synthesizing 2, 4-dichloroacetophenone comprises the following steps: S1, mixing m-dichlorobenzene and a catalyst to form a turbid liquid, and continuously inputting the turbid liquid into a tubular reactor; s2, enabling gas-phase acetyl chloride to pass through a micro-interface generator to form micron-sized microbubbles, continuously inputting the micron-sized microbubbles into a tubular reactor, and carrying out mixed reaction on the micron-sized microbubbles and the turbid liquid to obtain a mixed reaction liquid; and S3, continuously inputting the mixed reaction liquid and water into a hydrolysis reactor, and carrying out hydrolysis and separation to obtain 2, 4-dichloroacetophenone. According to the invention, the traditional kettle type stirring reaction is changed into micro-interface reaction, and the mass transfer area and the total mass transfer rate among multiple phases can be multiplied, so that the reaction rate is greatly improved, the side reaction is effectively controlled, and meanwhile, the product yield, the reaction safety and the like are improved.

This invention relates to the field of exhaust gas treatment technology, and more particularly to an exhaust gas treatment device for steel tailings treatment. The device includes a base plate, a workbench on top of the base plate, a support on top of the workbench, and a mounting shell on the left side of the top of the support. A first pipe is mounted on the mounting shell, and a second pipe is connected to the right side of the first pipe. The dust removal component of this device uses a servo motor-driven rack and pinion transmission to achieve dynamic switching of multiple filter plates. This allows for the replacement of clogged filter plates without stopping the machine, ensuring continuous dust removal operations. Simultaneously, the double-layer filtration structure improves the interception effect of large particulate impurities. The jet stirring component, in conjunction with the drive component, enables the three treatment chambers to rotate and stir synchronously, ensuring full contact between the exhaust gas and the calcium hydroxide solution. This significantly increases the acid-base neutralization reaction rate, reduces the residue of pollutants such as calcium sulfite and lead hydroxide, and improves the exhaust gas purification effect.

The present application provides a kind of waste oil transesterification reaction catalytic system, belong to biomass refining field.The preparation steps of catalyst include: in the solution containing Ni (NO3) 2 And Fe (NO3) 3 Carboxymethyl cellulose is added, then urea is added, reaction is carried out, and nano-porous NiFe2O4 is obtained, MgCl2 / ZnCl2 Solution and KOH / K2CO3 Solution are added to NiFe2O4 water dispersion, reaction is carried out, solid product is collected, calcination is carried out, and catalyst is obtained.Catalyst is added to waste oil to carry out catalytic reaction.The present application adopts carboxymethyl cellulose to regulate the crystal form, grain size and dispersity of catalyst carrier, and the obtained solid magnetic catalyst can improve the production efficiency of waste oil for preparing biodiesel.The catalyst has high active site, fast reaction rate, mild reaction condition, can reduce reaction energy consumption and production cost.The catalyst also has good magnetic property, is convenient for recovery.The catalyst has good stability, improves the controllability and stability of reaction.

The utility model discloses a chemical reaction kettle capable of preventing material adhesion, which relates to the technical field of chemical reaction kettles and comprises a reaction kettle body, and a frame body is arranged at the bottom of the reaction kettle body. A driving box is arranged at the top of the reaction kettle body, a driving motor is arranged in the driving box, the bottom end of an output shaft of the driving motor is located in the reaction kettle body, and a stirring shaft is arranged in the reaction kettle body; a plurality of stirring rods which are distributed in a staggered manner are arranged on the stirring shaft; chemical materials are poured into the reaction kettle body through the feeding hole, the driving motor runs to drive the stirring shaft to rotate, the chemical materials are stirred, the reaction rate of the chemical materials is increased, the push rod drives the moving plate to transversely move, the scraping plate is attached to the inner wall of the reaction kettle body, and the materials attached to the inner wall are scraped off. The attaching distance of the scraping plates can be controlled through the push rod, so that different materials can be removed, the inner wall of the reaction kettle body is prevented from being continuously eroded by the materials, the waste of the materials can be reduced, and the utilization rate of the materials is increased.

The invention provides carbon dioxide mineralization sealing reaction equipment which comprises an opening and closing unit, an upper cover frame shell is connected with the opening and closing unit, and the opening and closing unit is installed at the top of a supporting base and used for adjusting the height of the upper cover frame shell; the reaction unit is connected with the upper cover frame shell, the reaction unit moves along with movement of the upper cover frame shell, the reaction unit reacts with materials in the reaction frame shell, and mineralization and storage of carbon dioxide are achieved. The reaction units rotate in multiple directions in the reaction frame shell, so that a carbon sequestration material can be driven to move from top to bottom, the material can be stirred, the contact area and the contact frequency of a solid phase and a liquid phase are increased, and the mineralization reaction rate and the conversion efficiency of carbon dioxide are improved; and the reaction unit synchronously scrapes and cleans the inner wall of the reaction frame shell in the rotating process, so that material adhesion is prevented.

This invention provides an organosilicon sealant composition for anti-fog automotive lights and its preparation method. The organosilicon sealant composition for anti-fog automotive lights comprises the following components: α,ω-dihydroxy polydimethylsiloxane, a first crosslinking agent, a second crosslinking agent, a catalyst, a filler, a coupling agent, and a plasticizer. The first crosslinking agent has 3 alkoxy functional groups, the second crosslinking agent has ≥4 alkoxy functional groups, and the D3-D10 content of α,ω-dihydroxy polydimethylsiloxane is 0.01-0.05 wt%. This invention utilizes a polyalkyloxysilane derivative prepared from a tertiary amine polyol and an isocyanate-based silane coupling agent as a non-volatile second crosslinking agent, which has high activity, does not reduce the reaction rate, and can reduce the amount of the volatile first crosslinking agent. Furthermore, using α,ω-dihydroxy polydimethylsiloxane with a low D3-D10 content as the base adhesive can further reduce volatile components, making the automotive lights less prone to fogging.

The invention discloses a flocculation reaction precipitation management system for water treatment, relates to the technical field of coagulation control, and solves the technical problems that treatment cannot be performed based on raw water information, effective analysis and decision are not performed by comprehensive influence, and a treatment strategy cannot be adjusted in time. By comprehensively acquiring the raw water information and the coagulant information, the concentration of the treated water can be analyzed and identified more accurately. On the basis of floc image processing and parameter extraction, the water quality is ensured to reach the standard, the influence of different raw water temperatures and raw water pH values on the flocculation reaction is considered, and corresponding relations and parameters are determined through experiments and calculation, so that the system can adapt to water treatment requirements under different water quality conditions, and has relatively high adaptability; the relation between the reaction rate and the raw water input speed and the flocculant concentration is analyzed, the range value of the secondary putting amount is determined, and the stability and reliability of the system under different working conditions are further improved.

The application relates to the technical field of coal mine safety, and provides a coal spontaneous combustion behavior evolution method and system under multi-physical field coupling. The temperature field of coal body spontaneous combustion changes the volume by affecting the deformation amount, the porosity of the coal body is calculated through the volume, and then the thermal deformation is driven; the thermal deformation influences the water diffusion through the porosity, the residual moisture saturation of the coal body and the liquid phase saturation, and then the water migration is driven in combination with the evaporation rate and the liquid phase saturation; the water migration drives the heat transfer in combination with the evaporation rate, the effective thermal conductivity and the coal oxidation reaction rate, a cycle of "heat transfer-thermal deformation-water-heat transfer" is formed, the "heat-force-water-heat" coupling closed loop during the coal body spontaneous combustion is realized, the two-way coupling of the seepage field, the temperature field and the mechanical field is realized, and the problem that the prediction is inaccurate due to the neglect of thermodynamic deformation and dynamic changes of pores in a traditional model is effectively solved.

A multi-element microcouple adaptive selective corrosion dynamic expansion simulation method, belonging to the field of electro-corrosion simulation technology, is disclosed. The method includes: constructing a geometric model of compound particles and meshing the model; constructing the compound particle transport control equations and establishing the coupling relationship between potential, particle concentration, current density, boundary coverage, and reaction rate; adaptively selecting the anode and cathode among the multi-element microcouples of the compound particles and performing fixed-value processing on the geometric model; setting boundary conditions and initial values, including setting insulating boundaries, electrode surface boundaries, and initial particle concentrations; re-meshing the mesh, calculating the movement velocity of the corrosion interface, and constraining and controlling boundaries that do not corrode or undergo geometric deformation to complete the construction of the finite element model; solving the finite element model and outputting relevant physicochemical parameters during the corrosion process. This application clarifies the driving mechanism of pitting corrosion under open-circuit conditions and the existence state of corrosion products.

The invention discloses a preparation method of a superfine PtIr nanowire catalyst for ammoxidation. The preparation method comprises the following steps: firstly, fully dissolving platinum acetylacetonate, iridium acetylacetonate, tungsten hexacarbonyl and dodecyl trimethyl ammonium bromide in oleylamine to obtain a light yellow solution; carrying out ultrasonic treatment on the obtained light yellow solution until the solution is fully dissolved; and heating the obtained uniform light yellow solution to 190 DEG C in an oil bath, keeping the temperature for 5 hours, centrifuging, washing and drying to obtain the superfine PtIr nanowire catalyst. The nanowire structure has a high specific surface area and abundant active sites, and is beneficial to effective quality and electron transmission. Through alloying of Ir and Pt, the electronic structure on the surface of the catalyst is changed, and the poisoning probability is effectively reduced. Meanwhile, the adsorption and activation process of ammonia molecules is optimized through the synergistic effect between Pt and Ir, the reaction activation energy is reduced, and the reaction rate is remarkably increased. The catalyst not only has remarkable ammonia oxidation catalytic performance, but also is good in stability and simple in preparation process.

The utility model discloses a microwave plasma reactor for diamond synthesis, and relates to the technical field of diamond synthesis. The device comprises a reaction tank, a connecting sleeve is communicated with the surface of the reaction tank, a gas transmission assembly is arranged in the connecting sleeve, a plurality of adjusting pieces are arranged in the gas transmission assembly, the gas transmission assembly comprises a ventilation ring fixedly matched with the connecting sleeve, a hinge seat is slidably matched in the ventilation ring, each adjusting piece comprises a communicating pipe communicated with the ventilation ring, and a gas distribution table is communicated with the end of each communicating pipe; when the reaction tank is used, the motor drives the lead screw to rotate, the lead screw drives the hinge seat to ascend and descend, the hinge rod on the hinge seat pulls the sliding plates to move, and the position of gas input into the reaction tank can be adjusted when the reaction tank is used; the gas transmission teaching affair can be adjusted according to the actual use condition, so that the reaction rate in the reaction tank can be increased, and the working efficiency is improved.

This invention provides a self-trophic denitrification filter media with anti-scaling function and its preparation method. The filter media uses sulfur, magnesite, and a microporous carrier as its main components, supplemented with soluble salts for continuous pore formation, forming a highly efficient self-trophic denitrification filter media with anti-scaling function. This filter media overcomes the problem of scale formation and reduced efficiency when treating high-concentration nitrate wastewater, which is often caused by conventional methods using calcium carbonate as a neutralizing agent. It also overcomes the problems of slow reaction rates and poor filter media activity caused by the inability of filter media prepared using magnesite or siderite to neutralize the generated acid in a timely manner.

The present application relates to a kind of nano platinum colloids and its preparation method and its application, the average particle size of the nano platinum colloids is 50-100nm, D90 is 100-150nm, D10 is 30-70nm, zeta potential is-25mV to-40mV, pd I is 0.2-0.5, sphericity is 0.85-0.97.The nano platinum colloids prepared by the present application has small particle size, as catalyst has higher catalytic efficiency, can quickly capture hydrogen to occur reaction, is not influenced by hydrogen escape, is used in the detection reagent for determining the dissolved hydrogen concentration in water, reaction rate is fast, titration result is more accurate.

The tubular reactor comprises an upper tube box, a lower tube box, an upper-stage reaction tube, a middle reaction tube and a lower-stage reaction tube. The upper tube box is provided with a reaction channel inlet, and the lower tube box is provided with a reaction channel outlet. The upper-stage reaction tube and the upper tube box are detachably fixed together, the lower-stage reaction tube and the lower tube box are detachably fixed together, and the upper-stage reaction tube and the lower-stage reaction tube are detachably fixed together through the middle reaction tube. And each stage of reaction tube consists of a tube barrel and a parallel reaction tube bundle positioned in the tube barrel. And the upper tube box, the reaction column tube bundle of the upper-stage reaction tube, the reaction column tube bundle of the middle reaction tube, the reaction column tube bundle of the lower-stage reaction tube and the lower tube box jointly form a sealed reaction passage. And the tube barrel of each stage of reaction tube independently forms a sealed heat transfer fluid passage with an upper inlet and a lower outlet. The tubular reactor is small in backmixing and high in productivity per unit volume, the reaction rate and the heat transfer efficiency can be remarkably improved, and the temperature in the reaction process can be accurately controlled.

The application provides a bipolar plate with two-stage directional flow guiding structure for fuel cell, and belongs to the technical field of solid oxide fuel cell. The bipolar plate comprises a bipolar plate body; a gas distribution cavity is arranged on the surface of the bipolar plate body, and the gas distribution cavity comprises an inlet distribution area, a parallel flow channel area and an outlet distribution area; the inlet distribution area is provided with a plurality of turbulence units with streamline profile and non-circular cross section, and the spatial arrangement of the turbulence units is configured to guide the reaction gas flowing from the inlet in a direction; the central axis of the inlet section of at least part of the flow channels in the parallel flow channel area is configured to be matched with the direction of the reaction gas guided by the turbulence units, so that the reaction gas is smoothly guided. Through the synergistic effect of the two-stage flow guiding structure, the application not only realizes the uniform distribution of the gas with high precision, but also reduces the flow resistance to the minimum, and through the uniform flow distribution, the uniform control of the electrochemical reaction rate in the fuel cell is realized, and the uniformity of the temperature field is ensured from the root.

The present application relates to the technical field of steel metallurgy, and discloses a 5+1 converter oxygen lance system with efficient molten pool stirring and deep dephosphorization function, which comprises an oxygen lance body, a nozzle body and a group of spray holes arranged on the nozzle body, the group of spray holes comprises one central main spray hole and five peripheral spray holes, the five peripheral spray holes are uniformly distributed on the same circle with the central axis of the nozzle as the center, and the five peripheral spray holes and the central main spray hole form a 5+1 layout; the axis of the central main spray hole coincides with the central axis of the oxygen lance body or forms an angle of 0-3 degrees; the angle between the axes of the five peripheral spray holes and the central axis of the oxygen lance body is 10-18 degrees; the oxygen lance system further comprises an independent gas path control system, and the central main spray hole and the peripheral spray holes are respectively connected with independent gas supply pipelines; the present application adopts a composite flow field reconstruction principle to improve the stirring rate, enhances slag-gold emulsification, improves the dephosphorization reaction rate, realizes the collaborative optimization of slagging and dephosphorization through the synergy of zoned slagging and temperature control.

The application discloses a reverse cone type fluidized bed reactor for CO2 methanation, which comprises a shell and catalyst particles, the bottom of the shell is provided with a first gas inlet, the first gas inlet is used for feeding a first gas into the shell, the first gas is a mixed gas of CO2 and hydrogen, the top of the shell is provided with a gas outlet, the shell defines a reaction cavity, the reaction cavity comprises a conical cavity, the cross-sectional area of the conical cavity gradually increases in the upward direction, and the cross section of the conical cavity is perpendicular to the upward direction; the catalyst particles are arranged in the reaction cavity, and at least part of the catalyst particles are located in the conical cavity. According to the reverse cone type fluidized bed reactor for CO2 methanation, local heat accumulation caused by a large amount of heat release due to a fast reaction rate in the initial stage of the reaction can be avoided, heat is uniformly distributed in the conical cavity, local overheating is avoided, catalyst activity stability is ensured, the size of bubbles formed by impact flow of gas in the catalyst particles is reduced, and the methane conversion rate is improved.

This utility model discloses an acid precipitation reactor for the preparation of ammonium molybdate, including an acid precipitation reactor body and a top cover. The top cover is disposed on the acid precipitation reactor body, and a fixing frame is disposed on the top cover. A reciprocating drive mechanism is disposed on the fixing frame, and a support is disposed on the moving end of the reciprocating drive mechanism. A drive control component is disposed on the support. This utility model relates to the field of ammonium molybdate preparation technology. The reciprocating drive mechanism realizes the reciprocating adjustment control of the support in the vertical direction, thereby realizing the vertical movement control of the hollow shaft tube and the stirring shaft. At the same time, the drive control component realizes the rotation control of the hollow shaft tube and the stirring shaft, which can realize the reverse rotation of the first stirring blade and the second stirring blade, effectively increasing the stirring operation coverage area, improving the uniformity of mixing, accelerating the acid precipitation reaction rate in the ammonium molybdate preparation process, and improving production efficiency.

Hydrogenation reactions are catalyzed by driving charged particles (e.g., an electric current or particle beam) into and / or through a catalytic material so as to deliver energy for hydrogenation of one or more compounds chemisorbed by the catalytic material. The energy provided by the charged particles may be adjusted (e.g., based on a measured temperature and / or pressure associated with the reaction) to maintain a desired reaction temperature and / or prevent overheating of the reaction. In one example, hydrogen loading of the catalytic material (e.g., via electrolysis) enhances reaction rates. A wide variety of organic and inorganic reactants are contemplated for applications in food, energy production and storage (e.g., fossil-fuels, bio-fuels, petrochemicals, fuel cells), pharmaceuticals and other chemicals, as well as environmental applications (e.g., wastewater treatment, emissions reduction, carbon capture and sequestration).