15results about How to "Large mass transfer area" patented technology

This invention relates to the field of rubber hydrogenation, and discloses a stirred tank reactor and its application in rubber hydrogenation, as well as a batch hydrogenation method for nitrile rubber. The stirred tank reactor includes a cylindrical body and a stirrer and hollow finger-shaped baffles placed inside the body. The stirrer includes a hollow stirring shaft and a stirring paddle mounted on the shaft. A hydrogen inlet is located at the top of the hollow stirring shaft, and an annular gas distributor is located at the bottom. The hollow finger-shaped baffles include a hollow straight tube and at least two short, downward-sloping straight tubes arranged along the bottom of the tube. The bottom of the hollow straight tube is connected to a hydrogen inlet pipe at the bottom of the cylindrical body. The multiple hollow finger-shaped baffles within the stirred tank reactor enable good dispersion and mixing of hydrogen in the rubber solution, and, together with the hollow stirring shaft and gas distributor, achieve a top-to-bottom self-circulation of hydrogen in the gas phase space within the reactor, thereby improving the hydrogenation efficiency of the rubber hydrogenation reaction.

The utility model belongs to the technical field of alkannin extraction, in particular relates to an alkannin extraction system, and aims to solve the problems of low extraction efficiency and unsmooth liquid drainage caused by difficulty in uniformly and circularly spraying layered materials in a temperature-pressure coordinated and controllable closed environment and easiness in blockage of a liquid outlet at the bottom of a tank in the conventional alkannin extraction device. According to the scheme, the extraction device comprises an extraction tank, a storage screen frame, an electric heating wire, a liquid spraying ring and a liquid spraying pipe, the pressure in the tank is adjustable in a stepped mode through a pressurization assembly, and the temperature in the tank is adjustable in a stepped mode through the electric heating wire; the bottom end of the liquid spraying pipe is connected with a pressing sleeve pipe, the tank bottom is connected with an alignment bottom pipe, the pressing sleeve pipe is movably inserted into the alignment bottom pipe, a pipe body of the pressing sleeve pipe is provided with filter screen holes, a pipe body of the alignment bottom pipe is provided with a liquid passing notch, and the positions of the pressing sleeve pipe and the alignment bottom pipe are adjustable. According to the utility model, efficient extraction and convenient cleaning of alkannin are realized through temperature and pressure stepped cooperative control, internal and external dual-circulation spraying and a tank bottom filtering structure capable of switching an extraction mode and a cleaning mode.

The utility model belongs to the technical field of separation devices, and particularly relates to a dioctyl terephthalate distillation system which comprises a distillation tower, a plurality of tower plates arranged in the distillation tower, a heat exchanger connected to the bottom of the distillation tower, a product storage tank connected to the top of the distillation tower and a stirring assembly arranged in the distillation tower, the stirring assembly comprises a stirring paddle and a spiral stirrer, the stirring paddle is located at the bottom of the distillation tower, a plurality of corrugated plates and a plurality of flow guide covers are arranged in the distillation tower, the corrugated plates are located above the flow guide covers, and the flow guide covers are located above the stirring paddle. According to the utility model, the space in the distillation tower is divided into three parts according to functions, and each section adopts a proper internal component, so that the optimization of the distillation effect is realized.

The application provides an organic synthesis steam recovery device and relates to the technical field of steam recovery.The device comprises a steam recovery tank and an air floatation separation tank arranged in the steam recovery tank, the steam recovery tank is internally provided with a spiral cold water pipe and a spiral partition plate, the air floatation separation tank is internally provided with an organic matter separation pipe and a gas overflow port provided with a gas diffusing plate, steam enters from a steam inlet, and then is countercurrently convected and condensed along the spiral partition plate and the spiral cold water pipe, condensed water and uncondensed gas enter the air floatation separation tank after being refined into bubbles by the gas diffusing plate, and through secondary condensation and air floatation during the rising process of the bubbles, organic matter impurities and pure condensed water are separated, compared with a traditional device, the application solves the problems of insufficient condensation, difficult impurity separation and loose structure, has the advantages of complete heat energy recovery, accurate organic matter separation and stable and compact operation, and is suitable for efficient treatment and resource recycling of high-temperature steam containing impurities in the organic synthesis industry.

The utility model provides a kind of water-saving type methanol carbonylation system of acetic acid, system includes: reactor, first catalyst pipeline, second catalyst pipeline, first methanol pipeline, second methanol pipeline and carbon monoxide pipeline;Reactor includes pre-reaction section and main reaction section, pre-reaction section is located above main reaction section;The upper portion of main reaction section is connected pre-reaction section via air pipe line;Pre-reaction section bottom is connected main reaction section via infusion pipeline;The outlet of first catalyst pipeline and first methanol pipeline is communicated with pre-reaction section, second catalyst pipeline, second methanol pipeline is communicated with main reaction section;First intensification mass transfer device and second intensification mass transfer device are provided in main reaction section, first intensification mass transfer device and second intensification mass transfer device are located at the same height and the outlet of first intensification mass transfer device and second intensification mass transfer device is staggered arrangement.Application this system can improve product yield, reduce the energy consumption and cost required for acetic acid preparation.

The invention provides a polymer devolatilization method, and belongs to the technical field of polymer processing. The polymer devolatilization method comprises the following steps: adding a devolatilization auxiliary agent into a mixing section of an extruder, connecting the mixing section with a first ultrasonic generator, forming first ultrasonic waves in the mixing section by the first ultrasonic generator, and uniformly mixing the devolatilization auxiliary agent and a polymer melt under the action of the first ultrasonic waves so as to promote volatile components to be separated from the polymer melt. According to the polymer devolatilization method provided by the invention, more gas nuclei are formed in the mixing section through the ultrasonic cavitation effect, and the uniform mixing of the auxiliary agent and the polymer melt in the mixing section is enhanced by utilizing the ultrasonic turbulence effect, so that the devolatilization effect is improved, and the volatile component content in the devolatilized polymer is reduced.

The invention belongs to the technical field of recycling of electrolytic aluminum waste residues, and particularly relates to a resource utilization method of electrolytic aluminum waste residues, which comprises the following steps: 1) performing high-temperature calcination treatment on the electrolytic aluminum waste residues to obtain flue gas and furnace slag; 2) mixing the obtained slag with water, continuously blowing high-pressure air into the obtained mixture, and carrying out cavitation extraction to obtain an extract liquid; (3) filtering the obtained leaching liquor while the leaching liquor is hot to obtain filtrate and filter residues; (4) introducing the flue gas obtained in the step (1) into the filtrate, crystallizing and filtering to obtain a lithium carbonate-containing product; (5) tail gas obtained after the flue gas obtained in the step (4) is introduced into the filtrate is subjected to photocatalytic reduction to obtain CO; according to the method, complete resource utilization of the electrolytic aluminum waste residues is achieved under the condition that acid is not added, and the method has the advantages of being high in lithium recovery rate, simple in step, low in carbon, low in energy consumption, low in emission and high in safety and is quite suitable for industrial application.

This utility model relates to the field of esterification reaction technology, and more particularly to a reactive distillation column for esterification. The technical solution includes a column body with multiple inspection ports on the front for subsequent maintenance. Each inspection port has a closure door on its front. The column body contains multiple trays for providing a gas-liquid interface. Each tray has multiple gas riser holes on its surface. The top of each tray has multiple trapezoidal protrusions to increase the mass transfer area. Above the trays are multiple sets of arc-shaped baffles to reduce mist entrainment. Each set of trapezoidal protrusions has gas-phase injection holes inclined at 45 degrees on both sides. This utility model, through the arrangement of trapezoidal protrusions, gas-phase injection holes, and arc-shaped baffles, can force intense turbulence between the gas and liquid phases within the gaps between the protrusions, increasing the mass transfer area and improving separation efficiency. Simultaneously, it can utilize the principle of inertial collision to capture the liquid phase in the gas phase, reducing mist entrainment and improving product purity.

The utility model relates to the technical field of extraction towers, and discloses a DMF (Dimethyl Formamide) recovery extraction tower based on a metal pore plate filler, which comprises an extraction tower shell, a feeding pipe and a liquid inlet pipe are arranged on the upper part of the surface of the extraction tower shell, a gas discharging pipe is arranged on the upper surface, and a liquid discharging pipe is arranged on the lower part; the metal pore plate filler layer is arranged in the inner cavity of the shell, so that the mass transfer area can be increased, two extracted phases are contacted more fully, and the extraction efficiency is improved. The spraying frame is installed at the liquid outlet end of the liquid inlet pipe, the first nozzles are evenly distributed at the bottom, the inclined second nozzles are installed between the first nozzles, liquid can be sprayed at different angles, the distribution range is enlarged, and the two-phase contact effect is enhanced. A motor is arranged in the middle of the spraying frame, a rotor of the motor is coaxially provided with a rotating plate, cleaning brushes are arranged on the rotating plate corresponding to the nozzles, and when the motor drives the rotating plate to rotate, the cleaning brushes can clean the nozzles, prevent blockage, ensure uniform and stable liquid spraying and maintain normal operation and extraction effect of the extraction tower.

This utility model discloses a manganese-containing tailings recovery system for electrolytic manganese, including a manganese recovery system, an ammonia recovery system, and a composite recovery system. The manganese recovery system includes a water washing sedimentation tank; the ammonia recovery system includes a roasting furnace and a first gas collection pipe connected to the roasting furnace, as well as a condensation pipe and an ammonia storage tank; the composite recovery system includes a steel mold press, the discharge pipe of which is divided into two paths, one connected to a calcining furnace; a second gas collection pipe is connected to the calcining furnace, the end of which is connected to a heating oxidation tank, and a packed tower is also provided below the heating oxidation tank; the other path is connected to a crushing and screening machine, which is also connected to a microwave reactor, and the microwave reactor is connected to an ultrasonic generator. This design utilizes the high-temperature calcination of manganese-containing tailings from electrolytic manganese and red mud, employing solid waste co-resource utilization technology, to recycle the manganese-containing tailings from electrolytic manganese as building materials, improving the solidification rate of heavy metals and the decomposition rate of ammonia nitrogen.

This utility model discloses a plasticizer distillation device, including a distillation column, a feeding mechanism, a heating mechanism, a condensing mechanism, a discharging mechanism, and a temperature control system. The upper surface of the distillation column is provided with a top cover, and a steam exhaust pipe is located on the top of the top cover. A porous baffle is fixedly connected to the inner wall of the distillation column. This utility model effectively increases the gas-liquid mass transfer area and improves the separation effect of the plasticizer components by setting a heating chamber, a distillation chamber, and a separation chamber inside the distillation column, and by setting multiple layers of staggered corrugated plates in the separation chamber. This improves distillation efficiency and product purity. A temperature sensor monitors the temperature inside the distillation chamber in real time, and the controller precisely controls the heating power of the heating tubes based on the temperature signal, achieving precise control of the distillation temperature. This avoids product quality problems caused by temperature fluctuations and reduces the occurrence of side reactions.

This invention relates to the field of gas purification technology and discloses a low-energy desulfurization method: (1) acidic gas and foaming liquid are contacted in a microbubble generator to generate microbubbles, resulting in a gas-liquid mixture; wherein the foaming liquid includes ultrafine particles and complexed iron desulfurization liquid I, the particle size of which is 10-100 μm; (2) the mixture and complexed iron desulfurization liquid II are contacted counter-currently in an absorption tower to undergo an oxidation-reduction reaction, resulting in purified gas and desulfurized rich liquid; (3) the desulfurized rich liquid and air are oxidized and regenerated in an oxidation regeneration tank to obtain regenerated gas, regenerated lean liquid, and regenerated sulfur slurry; (4) the regenerated sulfur slurry is separated in a separator to obtain sulfur and filtrate; the regenerated lean liquid and / or filtrate are returned to the absorption tower for recycling. The low-energy desulfurization method provided in this invention can improve the bubble effect of the microbubble generator, reduce the impact energy consumption of the microbubble generator, improve the mass transfer efficiency of the absorption tower, and help reduce desulfurization energy consumption.

The present application relates to heavy oil processing and carbon material preparation technical field, disclose a kind of process for preparing superconductive carbon black of catalytic oil slurry's refining separation.The process sequence includes refining unit, conversion unit and post-processing unit.Refining unit carries out electric field synergic centrifugal separation and ultrasonic intensification solvent extraction in turn to catalytic oil slurry, and removes solid impurities and enriches condensed ring aromatic hydrocarbon.Conversion unit makes extraction liquid pass through catalytic polycondensation to generate mesophase pitch in turn, template-directed carbonization constructs ordered mesoporous framework, and plasma graphitization promotes crystallinity.Post-processing unit carries out grading purification and surface modification to the obtained carbon material, and finally obtains superconductive carbon black with three-dimensional interconnected conductive network.The present application realizes the high value-added resource utilization of catalytic oil slurry, and the process integration degree is high, and the obtained carbon black product has excellent conductive performance.

The novel synthesis resin solvent separation reaction kettle disclosed by the application comprises a reaction kettle body, the reaction kettle body comprises a cylinder body, upper and lower heads are arranged on the upper and lower sides of the cylinder body respectively, a reaction kettle valve is arranged on the lower head, the reaction kettle valve is connected with a gear pump through a circulating pipe, the gear pump is communicated with a falling film coil horizontally arranged in the cylinder body through the circulating pipe, a plurality of holes are arranged on the bottom of the falling film coil and are uniformly distributed in a ring shape around the center of the falling film coil, and a stirring device is arranged below the falling film coil. By increasing the falling film circulating coil, when the gear pump is started, the acrylic resin in the reaction kettle is pumped into the falling film coil and flows out from the lower holes of the falling film coil in a "filamentous" form to fall on the liquid surface in the kettle. This process greatly increases the mass transfer area of the acrylic resin, so that the contained solvent is accelerated to transfer to the gas phase through the "filamentous" surface vacuum, and then condensed into liquid through the horizontal condenser and flows into the collecting tank, thereby improving the solvent separation effect.

The invention discloses a carbon capture device and method, which are used for integrating CO2 absorption and desorption processes of carbon capture in the same device, the device at least comprises: an absorption unit arranged at the upper part of the device; in the absorption unit, the absorption slurry is in contact with carbon-containing gas from top to bottom so as to carry out gas-liquid mass transfer under a high-pressure condition; the solid phase part of the absorption slurry is powder of a supported ionic liquid, and the ionic liquid is an amino-containing ionic liquid; the desorption unit is arranged below the absorption unit and is isolated by a liquid seal; under the vacuum condition, the absorbed slurry is subjected to CO2 desorption in a desorption unit, the desorbed slurry is recycled after being subjected to gas-liquid separation, and CO2 is discharged. According to the invention, the gas-liquid mass transfer efficiency can be effectively improved and the absorption rate of CO2 can be increased through the nano-micro interface strengthening effect; absorption and desorption are integrated into the whole device, different areas are isolated in a liquid sealing mode, and the functions of high-pressure absorption and vacuum desorption can be achieved in the same device.