19results about How to "Reduce reaction efficiency" patented technology

The invention belongs to the technical field of preparation of phosphorus trichloride, and particularly relates to a preparation device and method of phosphorus trifluoride. The device comprises a reactor, a cold trap and a collector, the upper part of the reactor is provided with a phosphorus trichloride dropping device and a zinc fluoride feeding port, the upper end of the reactor is provided with a stirring paddle, the stirring paddle extends to the bottom of the reactor, the upper end of the reactor is communicated with the cold trap through a first pipeline, the pipeline is provided with a condensation pipe, and the condensation pipe is communicated with the cold trap through a second pipeline. The bottom of the cold trap is communicated with the reactor through a second pipeline; and the upper end of the cold trap is communicated with the collector through a third pipeline. The method comprises the following steps: dropwise adding phosphorus trichloride into anhydrous zinc fluoride powder in a nitrogen atmosphere, and stirring for reaction; and collecting a reaction product, and recovering phosphorus trichloride. By adding the stirring paddle into the reactor and adopting a two-stage condensation method, the conversion rate of the raw materials is increased, the production cost is reduced, and the operation process is simple.

The invention discloses a high-viscosity stirring reaction kettle, and relates to the technical field of chemical equipment, the high-viscosity stirring reaction kettle comprises a stirring reaction kettle and a lifting assembly, the lifting assembly comprises a bottom plate, the left side of the upper surface of the bottom plate is fixedly connected with a supporting frame, the right side of the supporting frame is fixedly connected with a movable sliding rail, and the right side of the movable sliding rail is slidably connected with a connecting plate through a sliding block; the stirring reaction kettle comprises a first kettle body, the outer side of the first kettle body is fixedly connected with a second kettle body, the outer surface of the second kettle body is fixedly connected with at least one connecting seat, the bottom of the connecting seat is fixedly connected with a spring shock absorber, and the bottom of the spring shock absorber is fixedly connected to the upper surface of the U-shaped frame; a kettle cover is fixedly connected above the first kettle body through bolts, and a stirring assembly is arranged in the first kettle body. The reaction kettle has the advantages that the double-layer structural design can ensure the temperature stability in the reaction process, the stirring assembly can help to uniformly distribute high-viscosity materials, and the phenomenon of local accumulation or caking of the materials in the stirring process is prevented.

The utility model provides a superfine bubble synergistic device, which relates to the technical field of bubble generating devices and comprises a bubble generator, a moving component, a reaction box and a sealing component, the reaction box is arranged at the bottom of the bubble generator, the sealing component is arranged in the reaction box, and the moving component is arranged on one side, close to the sealing component, in the bubble generator. A water outlet is formed in the bottom of the bubble generator, and a communicating assembly is arranged between the water outlet and the moving assembly; the moving assembly comprises a motor, a reciprocating lead screw and a sliding block, the motor is fixedly connected to the bubble generator, the reciprocating lead screw is fixedly connected with the output end of the motor, the reciprocating lead screw is rotationally connected to the inner side of the bubble generator, the reciprocating lead screw can push the sliding block to do reciprocating motion along the bubble generator by arranging the moving assembly, and the sliding block pushes the communicating pipe and the shower head to move together; the movement reaction of the nozzle in the reaction box is increased, and the reaction range of the synergistic device to the reaction solution is further increased, so that the reaction efficiency of the synergistic device is improved.

The invention provides an SNCR device and method, and belongs to the technical field of waste gas treatment.The SNCR device comprises an ammonia gas detector, a nitrogen oxide concentration analyzer and an ammonia water vaporizer, the ammonia water vaporizer comprises a straight pipe section, a top inlet is formed in the top of the straight pipe section, the top inlet is connected with an ammonia water liquid inlet device, and a middle inlet is formed in the middle of the straight pipe section; the middle inlet is connected with a steam inlet device, the bottom of the straight pipe section is provided with a necking section, the bottom of the necking section is provided with a throat part, the bottom of the throat part is provided with a flaring section, the bottom of the flaring section is provided with a bottom outlet, and the bottom outlet is connected with a steam outlet device; according to the invention, the concentration of nitrogen oxide and the concentration of ammonia escape can be adjusted in real time, steam and ammonia water are fully atomized and gasified, and then are rotationally sprayed into flue gas, so that the denitration efficiency is greatly improved, the denitration ammonia consumption and the ammonia escape are reduced, and the denitration reaction temperature interval can be reduced to 750-1100 DEG C.

This invention relates to a non-stop maintenance process and apparatus for chlorosilane production. The apparatus comprises, in sequence, a hydrogen main, a second switching valve, a hydrogen buffer tank, a ninth switching valve, a hydrogen compressor, a static mixer, a first heat exchanger, a seventh switching valve, a heater, and a fluidized bed reactor. The other inlet of the static mixer is connected in sequence to the STC buffer tank and the tenth switching valve. The first and second ends of the first heat exchanger are respectively connected to the outlet of the static mixer and one end of the seventh switching valve. The third end of the first heat exchanger is connected to subsequent processes via a sixth switching valve, and the second end of the first heat exchanger is connected to subsequent processes via a first branch and a fifth switching valve. This maintenance process and apparatus prevents bed damage and material clogging at the bottom and internal components of the tower during fluidized bed cooling and depressurization, reducing the workload during fluidized bed restart and avoiding personnel entering confined spaces, thus reducing the risk of accidents.

The invention discloses a method for preparing graphene by using graphene oxide, and relates to the technical field of nano material preparation, the preparation method comprises the following components: construction of a reaction system: weighing graphene oxide powder, adding the graphene oxide powder into ionized water, fully dispersing the graphene oxide powder through a magnetic stirrer to form a uniform graphene oxide solution, and adding the uniform graphene oxide solution into the reaction system; according to the present invention, the sound energy focusing technology is introduced, and the high-precision sound energy focusing device is ingeniously utilized to accurately focus the high-frequency sound wave on the contact interface of the graphene oxide and the hydriodic acid, such that the energy density of the area is significantly improved so as to significantly improve the energy density of the area; and the local temperature and pressure are rapidly increased in a short time due to the fact that the temperature and the pressure are reduced, so that the reduction reaction of the graphene oxide is greatly accelerated, the collision frequency among molecules is further promoted through the vibration effect of sound waves, reactant molecules interact more frequently, and the reaction rate and efficiency are further improved.

The invention relates to the technical field of material preparation, and discloses a method for preparing a brushed film composite packaging material and an automatic preparation device thereof, wherein a method for preparing a brushed film composite packaging material comprises the following steps: selecting a polymer monomer, dissolving the monomer in a suitable solvent, heating to a suitable temperature, and using a stirring device to stir and mix, so that the monomer undergoes a polymerization reaction to form a polymer solution; dehydrating the polymer solution to remove a small amount of low-molecular impurities in the solution to obtain a relatively pure polymer; drying the polymer to a suitable moisture content to solidify it into solid particles; subjecting the dried polymer particles to a film-forming process to make a soft and tough film; a high-purity polymer product can be obtained, and a small amount of low-molecular impurities in the solution can be removed by stirring and mixing with a stirrer, and various types of polymers can be conveniently prepared by selecting different polymer monomers.

The invention discloses a sludge dewatering device for environmental protection, and relates to the technical field of sludge treatment device.The sludge dewatering device for environmental protection comprises a machine body, a feeding port is formed in the top of the machine body, a motor is arranged on the right side of the feeding port, and a chemical feeding mechanism is arranged on the right side of the motor; a dewatering mechanism and a discharging mechanism are arranged at the rear end of the medicine feeding mechanism; wherein the medicine feeding mechanism comprises a medicine inlet, a medicine feeding sliding plate, a connecting rod, a moving block, a poking rod, an inclined surface block, a moving rod, a fixed shaft, a swing plate, a switch block, a switch rod, a stirring rod and a rotating shaft, when the motor is started, the switch rod makes contact with the switch block, the medicine feeding sliding plate is intermittently opened, the connecting rod pushes the moving rod to move, and the moving rod moves to push the inclined surface block and the moving rod to move; the inclined surface block pushes the flocculant to move towards the chemical inlet, and the movable rod pushes the swing plate to swing, so that the flocculant stacked below is prevented from caking, and the reaction efficiency of the flocculant and sludge is not influenced.

The present invention discloses a decentralized low-carbon sewage treatment device and method based on anaerobic ammonia oxidation, the device includes a sewage inlet tank for receiving external raw water, which can transport the raw water to a UASB reactor and a continuous flow reactor respectively in proportion; the UASB reactor is used to convert organic matter in the raw water into methane; a suspended anaerobic ammonia oxidation bacteria filler is added in the continuous flow reactor, and raw water denitrification is achieved through short-range nitrification / anaerobic ammonia oxidation and short-range denitrification / anaerobic ammonia oxidation, and the hydraulic retention time in the anoxic zone is extended to achieve synchronous in-situ fermentation of sludge, and a check gate is set to solve the problem of sludge back mixing; the secondary sedimentation tank precipitates the raw water after denitrification, and returns part of the sludge to the continuous flow reactor. The present invention does not need to add additional carbon sources, effectively solves the problem of back mixing in the reaction zone, realizes the resource utilization of decentralized sewage organic matter and sludge reduction generated in highway service areas, etc., and has the characteristics of high denitrification efficiency, stable performance and effective reduction of carbon emissions.

A method for recovering organic tin in a vinyl ether compound transesterification kettle liquid, comprising the following steps: 1) taking the vinyl ether compound transesterification kettle liquid, cooling to-10-40 DEG C, standing, until crystals are precipitated in the transesterification kettle liquid, filtering, or, cooling to-10-40 DEG C, adding 0.1-5% of organic tin powder in mass fraction to the transesterification kettle liquid, stirring and mixing uniformly, then standing, until crystals are precipitated in the transesterification kettle liquid, filtering; 2) adding a basic solution with a concentration of 5-8 wt% to the crystals obtained by filtering, in a mass ratio of 1:0.5-10, and heating to 25-60 DEG C, until flocculent substances appear on the surface of the basic solution, and filtering the lower aqueous phase; 3) washing the crystals obtained by filtering with water, then washing with an organic solvent, drying, to obtain organic tin. The process condition is mild and the operation is convenient, the recovered organic tin can be used repeatedly, the production cost of enterprises is reduced, and environmental pollution is avoided.

The present invention relates to a production method of D, L-parahydroxyphenylglycine, wherein an aqueous solution of glyoxylic acid, sulfonamide, phenol and a catalyst are stirred and dissolved; a mixed solution is introduced into a multistage tubular reactor, and the temperature of each stage is controlled; a neutralizer is added to the obtained reaction solution according to a pH parameter; the neutralized solution is subjected to solid-liquid separation to obtain D, L-parahydroxyphenylglycine. A production device, a liquid outlet of a material mixing kettle is connected to a liquid inlet of a multistage tubular reactor, a liquid outlet of the multistage tubular reactor is connected to a neutralization kettle, a discharge flow control valve is arranged on the liquid outlet of the material mixing kettle, a flow control valve is arranged between the liquid outlet of a neutralizer flow adding kettle and a neutralization kettle, a liquid outlet of a neutralizer flow adding kettle is connected to a neutralization kettle, a temperature sensor is arranged in each stage of the multistage tubular reactor, and a pH sensor is arranged in a neutralization kettle. The beneficial effect is: the entire production cycle is shortened to 12h, the yield is increased by about 5%, and the purity is increased by about 3%.

This invention relates to the field of alkane conversion equipment technology, and discloses an alkane conversion equipment for high-purity nitrogen hydrodeoxygenation, including a distribution mechanism installed on the inner wall of a tank, with a distribution disc fixedly connected to the inner wall of the tank; a separation mechanism installed on the inner wall of the distribution mechanism; and a flow guiding mechanism installed on the inner wall of the distribution mechanism. Solid particles present in the gas are retained in an arc-shaped plate above the arc plate due to changes in gas flow direction. The solid particles in the arc plate are then carried away by subsequent gas flow, allowing them to be guided to the arc ring via a guide ring, and then, driven by the gas flow and blocked by a shielding ring, enter the storage tank. This method prevents a large number of solid particles from entering the catalyst bed, thereby blocking the pores inside the catalyst and causing the gas to bypass the blocked catalyst area, forming a channel and reducing reaction efficiency.

This invention provides a plasma processing apparatus and control method. The plasma processing apparatus includes: a vacuum reaction chamber with an upper electrode and a lower electrode inside; a sleeve penetrating the top wall of the vacuum reaction chamber; a movable ring surrounding the upper electrode and movable vertically between a transfer position and a process position; a support rod at the top of the movable ring, the top of which passes through the sleeve; a first driving mechanism at the top of the support rod; and a limiting pad connected to the first driving mechanism and movable perpendicular to the support rod. When the limiting pad moves to the outer circumference of the support rod and is pressed against the sleeve by the top of the support rod, the movable ring is raised by at least one limiting pad height relative to the process position, placing the movable ring in a cleaning position for performing the cleaning process. This invention increases the gap between the movable ring and the lower electrode during the cleaning process, improving the efficiency of the cleaning reaction chamber.

The invention relates to the technical field of waste silica gel recycling, in particular to a method for preparing industrial silicon from waste silica gel and application of the method. The method provided by the invention comprises the following steps: step 1, adding collected waste silica gel into an alcoholic solution of a carburant for reaction, and then filtering; and 2, drying and removing impurities from the filter residues obtained in the step 1, heating the obtained filter residues to a melting temperature under closed and negative pressure conditions, carrying out a reaction, and cooling to obtain the product. According to the method, the added value of the waste silica gel is greatly improved, and the problems that in the existing waste silica gel treatment and industrial silicon preparation process, pollution is large, and the post-treatment procedure is complex are solved.

The utility model provides a steel slag reverse soaking tank type hot disintegration water supply and drainage assembly and a steel slag hot disintegration device, and the steel slag reverse soaking tank type hot disintegration water supply and drainage assembly comprises a water inlet and outlet pipe, a water supply component and a drainage component. The water outlet pipe is arranged below the hot tank, a first end and a second end are formed at the two ends of the water inlet and outlet pipe respectively, and the first end is communicated with the bottom of the hot tank; the water supply assembly is provided with a water supply pipe, and the water outlet end of the water supply pipe communicates with the second end to form a water supply path; the drainage assembly is provided with a drainage pipe, and the water inlet end of the drainage pipe communicates with the second end to form a drainage path. According to the steel slag reverse soaking tank type hot stuffy water supply and drainage assembly, water can be introduced from bottom to top from the bottom of the hot stuffy tank, and when water is introduced from the bottom, the water can flood all steel slag and make contact with all the steel slag from the bottom, so that heat utilization is guaranteed; the digestion effect of the steel slag and water is ensured, and the reaction efficiency is improved.

The invention discloses a catalyst for preparing epoxypropane by a propylene epoxidation method. The catalyst comprises a nitrogen-containing ligand and a metal oxide-loaded TS-1 molecular sieve, based on 100% of the mass of the TS-1 molecular sieve, the content of metal in the metal oxide is 0.01%-2%; the ratio of silicon to titanium in the TS-1 molecular sieve is 30 to 200; metal in the metal oxide loaded on the TS-1 molecular sieve and the nitrogen-containing ligand are subjected to in-situ coordination in the process of preparing epoxypropane by a propylene epoxidation method to form the catalyst. By adopting the catalyst disclosed by the invention, the problems that potential safety hazards are generated due to overhigh hydrogen peroxide concentration in a traditional liquid-phase propylene epoxidation preparation method, and a titanium silicalite molecular sieve catalyst pore channel is easy to block so as to be inactivated are solved; and moreover, the conversion rate of hydrogen peroxide with the concentration of 5-40% and the yield and selectivity of epoxypropane are effectively improved.

The application provides a fuel cell membrane electrode activation method, and specifically comprises the following steps: (1) installing a fuel cell on a test bench, setting an anode gas as hydrogen, setting a cathode gas as nitrogen, purging the hydrogen and the nitrogen to the anode and the cathode respectively, and pre-humidifying the fuel cell; (2) controlling the temperature of the fuel cell to be 30-60 DEG C, and ensuring the relative humidity RH of the cathode and the anode of the fuel cell to be greater than or equal to 100% through pre-humidification; (3) replacing the cathode gas from nitrogen with air, performing forced discharge treatment on the fuel cell under the condition that the hydrogen metering ratio is 1.0-2.0 and the air metering ratio is less than or equal to 1.3, and operating the fuel cell at a constant voltage less than or equal to 0.3 V to activate the fuel cell membrane electrode. The technical scheme of the application solves the problems of long time consumption, incomplete activation, low catalyst utilization rate and large energy consumption in the existing fuel cell membrane electrode activation method.

The invention relates to a polyfunctional catalyst for high-boiling cracking conversion of polycrystalline silicon and organic silicon. The molecular formula of the polyfunctional catalyst is # imgabs0. The catalyst has poison resistance and high-efficiency catalytic performance with double active centers.

The invention discloses N-methyl-N-(trimethylsilyl) acetamide and a preparation method thereof.The preparation method comprises the steps that S100, raw materials including N-methyl acetamide and trimethylchlorosilane are adopted to react under a triethylamine system, and a first material is obtained; and S200, sequentially carrying out filter pressing, concentration and rectification on the first material to obtain the N-methyl-N-(trimethylsilyl) acetamide. The N-methyl-N-(trimethylsilyl) acetamide is prepared from the raw materials which are low in cost, safe and reliable through reaction under the conditions of normal pressure and low temperature, and the N-methyl-N-(trimethylsilyl) acetamide preparation method which is safe, environmentally friendly, low in cost, simple in process and suitable for industrial production is provided.