Patents
Literature
Patsnap Eureka AI that helps you search prior art, draft patents, and assess FTO risks, powered by patent and scientific literature data.

28results about How to "Large mass transfer area" patented technology

Method and system for continuously extracting and washing crude benzomelamine product

The invention provides a method and a system for continuously extracting and washing a crude benzomelamine product. The method comprises the following steps: mixing a crude product solid of benzotripolycyanamide with water to prepare slurry capable of continuously flowing, and continuously feeding in a fluid form; enabling the slurry to be in countercurrent contact with washing water in the turntable extraction tower so as to realize continuous extraction and washing of the crude product of the benzotripolycyanamide; meanwhile, the spiral conveyor is additionally arranged at the bottom of the turntable extraction tower, so that washed benzotripolycyanamide solids can be conveniently settled to the lower part of the turntable extraction tower so as to realize continuous discharging and further to be dried. Compared with traditional intermittent cross-flow washing, the method has the advantages that continuous extraction and washing of crude benzomelamine product solids can be achieved, washing efficiency is improved, washing water is saved, impurities such as benzamide and potassium hydroxide remaining in benzomelamine can be efficiently removed, the ash content and the free alkali content of the product are reduced, and the method is suitable for industrial production. And the purity of the benzotripolycyanamide product is improved.
Owner:WUHAN YOUJI IND

Stirred tank reactors and their use in rubber hydrogenation, batch hydrogenation process for nitrile rubber

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.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Liquid effluent-to-gaseous discharge system

The invention relates to the field of inland nuclear facilities, and discloses a liquid effluent-to-gaseous discharge system, which comprises a shell, a liquid inlet, an exhaust port, a gas inlet, a gas outlet and a gas outlet, the number of the carrier tape plates is multiple, the multiple carrier tape plates are sequentially distributed in the shell in the height direction of the shell, the carrier tape plates are all connected with the shell, and circulation channels are formed between the carrier tape plates and the inner wall of the shell and / or in the carrier tape plates; the liquid outlet end of the liquid supply branch is connected with the liquid inlet of the shell, and the liquid supply branch is used for providing liquid effluent for the shell; and the gas outlet end of the gas supply branch is connected with the gas inlet of the shell, and the gas supply branch is used for providing carrier tape gas for the shell. The carrier band plates are arranged in the height direction of the shell, so that gas-liquid mass transfer is carried out between the liquid effluent and the carrier band gas on the carrier band plates, the space in the height direction can be fully utilized, and the effect of increasing the mass transfer area under the condition that the occupied area is not increased is achieved.
Owner:CHINA NUCLEAR POWER ENGINEERING CO LTD

Alkannin extraction system

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.
Owner:PEKING UNIV CANCER HOSPITAL INNER MONGOLIA HOSPITAL (AFFILIATED CANCER HOSPITAL OF INNER MONGOLIA MEDICAL UNIV INNER MONGOLIA AUTONOMOUS REGION CANCER HOSPITAL INNER MONGOLIA AUTONOMOUS REGION CANCER CENT)

Workshop dust and organic waste gas efficient treatment system

ActiveCN222131467Uautomatic control openingStable exhaust gas volumeUsing liquid separation agentEmission standardEnvironmental engineering
The utility model relates to the technical field of environmental protection, in particular to a workshop dust and organic waste gas efficient treatment system which comprises a waste gas pretreatment part structure, and a waste gas output end of the waste gas pretreatment part structure is connected with a waste gas aftertreatment part structure; the waste gas input end of the waste gas pretreatment part structure is connected with a waste gas collection part structure; the waste gas pretreatment part structurally comprises a water washing tower, an alkaline washing tower and a medicine washing tower; the output end of the water washing tower is connected with the input end of the alkaline washing tower, and the output end of the alkaline washing tower is connected with the input end of the medicine washing tower; the input end of the water washing tower is the waste gas input end, and the output end of the medicine washing tower is the waste gas output end. The waste gas treatment device has the characteristics that the structural design is simpler and more reasonable, the waste gas at each waste gas generation point can be better collected, and the waste gas can be better treated in a centralized manner to reach the emission standard.
Owner:CHONGQING BAIOU ENVIRONMENTAL PROTECTION TECH CO LTD

Dioctyl terephthalate distillation system

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.
Owner:SHANDONG HUAYUE NEW MATERIAL TECH CO LTD

Organic synthesis vapor recovery device

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.
Owner:LIANYUNGANG NORMAL COLLEGE

Water-saving type methanol carbonylation for acetic acid production enhanced reaction system

ActiveCN224485937UImprove conversion rateExtended reaction path
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.
Owner:NANJING YANCHANG REACTION TECH RES INST CO LTD

Corrosive gas absorption system

The utility model relates to a corrosive gas absorption system. The corrosive gas absorption system comprises an absorption tank, a heat exchanger, a peristaltic pump and a diaphragm pump, a gas inlet pipe and a liquid inlet pipe are arranged on the absorption tank, a nozzle is arranged at the end of the liquid inlet pipe, the lower end of the gas inlet pipe is located on the lower side of the liquid inlet pipe, the upper end of the gas inlet pipe is connected with a first connecting pipe, and the peristaltic pump is arranged on the first connecting pipe; the diaphragm pump is used for pumping corrosive gas into the absorption tank, a cooling coil is arranged in the absorption tank, a cooling liquid inlet pipe and a cooling liquid outlet pipe are arranged on the absorption tank, the bottom of the absorption tank is communicated with an inlet of the cooling coil through a second connecting pipe, and a liquid inlet of the diaphragm pump is communicated with an outlet of the cooling coil through a third connecting pipe; and a liquid outlet of the diaphragm pump is communicated with the liquid inlet pipe through a fourth connecting pipe. The pressure of the corrosive gas is increased after the corrosive gas flows through the peristaltic pump, so that the gas in the gas storage bag can be completely conveyed into the absorption tank, and the pressure during gas absorption can be increased. The corrosive gas enters the absorption tank after passing through the one-way valve after being pressurized, and the tail end section of the gas outlet is provided with the filter cloth, so that absorption liquid is effectively prevented from entering a gas pipeline. The absorption liquid is sprayed into the absorption tank, and tiny liquid drops generated by spraying are beneficial to rapid absorption of corrosive gas. After heat generated in the absorption process is cooled through the heat exchanger, high absorption driving force is maintained, and efficient absorption is facilitated.
Owner:HENAN FLUORINE BASED NEW MATERIAL TECH CO LTD

Polymer devolatilization method

PendingCN121946807Alow volatile contentImprove the devolatilization effectPolymer scienceUltrasonic cavitation
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.
Owner:PETROCHINA CO LTD

Resource utilization method of electrolytic aluminum waste residues

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.
Owner:SCIMEE TECH & SCI CO LTD

Spiral absorber

The present invention relates to the field of gas absorption, and provides a spiral absorber, which comprises: a housing for accommodating an absorption medium, the housing being provided with an absorption medium inlet and an absorption medium outlet; the heat exchange pipe comprises a heat exchange spiral section, the heat exchange spiral section is spirally arranged in the shell in the axial direction of the shell, and the heat exchange pipe is used for circulation of a cooling medium; the gas distribution unit and the heat exchange spiral section are sequentially arranged in the axial direction of the shell, the gas distribution unit is used for being connected with a gas source for providing a medium to be absorbed, and gas distribution holes are formed in the gas distribution unit; and the air supply unit is connected with the air distribution unit and extends in the direction where the heat exchange spiral section of the heat exchange pipe is located, and a plurality of air supply holes are formed in the air supply unit in the extending direction of the air supply unit. Air is supplemented at different positions along the multiple air supplementing holes of the air supplementing unit, the contact area between the to-be-absorbed medium and the absorption medium can be increased, the problem that the contact area between the to-be-absorbed medium and the absorption medium is reduced due to the fact that bubbles are combined into large bubbles in the rising process can be solved, and the mass transfer efficiency is improved.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI

A reactive distillation column for esterification

ActiveCN224421970UReduce entrainmentLarge mass transfer areaFluid phaseReactive distillation
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.
Owner:HAIYAN FINE CHEM IND CO LTD

A hydrogen peroxide staged extraction column and method

ActiveCN118767481BEliminates risk of explosion from contactReduce the amount of material
The present application relates to hydrogen peroxide extraction technical field, disclose a kind of hydrogen peroxide subsection extraction tower and method.The hydrogen peroxide subsection extraction tower includes tower body, the tower body is sequentially provided with plate column section and filler column section from top to bottom, the upper portion of the plate column section has water phase entrance, the lower portion of the filler column section has anthraquinone working fluid entrance;The filler column section includes several filler trays, each filler tray is stacked by multiple corrugated filler pieces along horizontal direction, and the wave crest and wave trough between adjacent two corrugated filler pieces are stacked to form multiple mutually parallel inclined quadrangular prism channels, and the inclination angle α of the inclined quadrangular prism channel is 20~80°.The method not only can directly extract more than 35wt% hydrogen peroxide aqueous solution, but also can eliminate the explosion risk of high-concentration hydrogen peroxide aqueous solution in contact with anthraquinone working fluid during extraction process.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Reaction source supply device

The utility model provides a reaction source supply device, which comprises an accommodating part, a carrier gas conveying part and a uniform flow dispersing part, and is characterized in that the accommodating part is used for accommodating a liquid reaction source and can be communicated with a reaction chamber of semiconductor equipment; the carrier gas conveying component comprises a carrier gas conveying main pipe and a plurality of carrier gas conveying branch pipes communicated with the carrier gas conveying main pipe, the carrier gas conveying main pipe is used for conveying carrier gas to the carrier gas conveying branch pipes, each carrier gas conveying branch pipe is provided with a carrier gas outlet, and the carrier gas outlets are located in the containing component. The carrier gas outlet is used for discharging carrier gas in the carrier gas conveying branch pipe, and the uniform flow dispersing component is arranged at the carrier gas outlet and used for uniformly dispersing the carrier gas discharged from the carrier gas outlet to form bubbles. The reaction source supply device provided by the utility model can improve the reaction rate and productivity of the semiconductor, and can reduce the generation of particulate matters.
Owner:BEIJING NAURA MICROELECTRONICS EQUIP CO LTD

Method and device for strengthening gas phase uniform distribution in gas-liquid mass transfer process

The invention provides a gas phase uniform distribution method for strengthening a gas-liquid mass transfer process. The invention further provides a gas phase uniform distribution device for strengthening the gas-liquid mass transfer process. The invention further provides application of the gas phase uniform distribution method for strengthening the gas-liquid mass transfer process or the gas phase uniform distribution device for strengthening the gas-liquid mass transfer process in strengthening the gas-liquid mass transfer process in the bubbling reactor. The invention further provides a bubbling reactor which comprises the gas phase uniform distribution device for strengthening the gas-liquid mass transfer process. According to the method and the device for enhancing gas phase uniform distribution in the gas-liquid mass transfer process, gas-liquid distribution is improved and optimized, the gas-liquid mass transfer coefficient is increased, the gas-liquid mass transfer process is enhanced, and a favorable contact place is provided for gas-liquid two-phase reaction in a reactor.
Owner:广西华谊能源化工有限公司 +1

Extraction tower for recycling DMF (Dimethyl Formamide) based on metal pore plate filler

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.
Owner:JIANGXI YONGDA ENVIRONMENTAL PROTECTION & ENERGY SAVING TECH CO LTD

An electrolytic manganese tailings recovery system

ActiveCN224450776UImprove curing rateImprove ammonia nitrogen decomposition rateAmmoniacal nitrogenAmmonia storage
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.
Owner:JINGXI DAXINAN MANGANESE IND CO LTD

A plasticizer distillation apparatus

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.
Owner:NANJING ZHENXING CHEM IND AUXILIARIES CO LTD

Alkali washing tower

The utility model relates to an alkaline washing tower. The alkaline washing tower comprises a tower body, a first chimney tower plate, a second chimney tower plate, a third chimney tower plate, a plurality of layers of weak base washing tower plates, a plurality of layers of medium-strong base washing tower plates, a plurality of layers of strong base washing tower plates and a plurality of layers of water washing tower plates. The first chimney tower plate, the second chimney tower plate and the third chimney tower plate can ensure that cracking gas smoothly flows in the tower body so as to remove acid gas, and can also prevent a washing liquid from flowing among all areas, so that the separation effect is ensured. The weak base washing tower plate, the medium-strong base washing tower plate, the strong base washing tower plate and the water washing tower plate are all arranged to be trapezoid corrugated sieve hole tower plates, it is guaranteed that the trapezoid corrugated sieve hole tower plates are laid on the whole cross sectional area in the tower body, the mass transfer area of the alkaline washing tower can be increased, the processing capacity is improved, meanwhile, the trapezoid corrugated sieve hole structures can prevent the tower plates from being blocked, and the service life of the tower is prolonged. Therefore, the alkaline washing tower has the advantages of being large in treatment capacity, good in separation effect, low in pressure drop, not prone to being blocked and long in operation cycle.
Owner:CHANGSHA BONENG TECH DEV

Liquid-phase carbonyl synthesis reactor and liquid-phase carbonyl synthesis reaction system

The utility model relates to a liquid-phase carbonyl synthesis reactor and a liquid-phase carbonyl synthesis reaction system. The liquid-phase carbonyl synthesis reactor comprises an upper sealing head, a middle-section cylinder and a lower sealing head, at least two first fluid stirring devices (21) with consistent structures are arranged at the upper part of the middle-section cylinder, the first fluid stirring devices (21) are uniformly distributed along the wall surface of the reactor, and outlets of the first fluid stirring devices (21) face the lower sealing head; the first fluid stirring device (21) comprises a first liquid inlet (211) communicated with the outside and a first nozzle (212) arranged on the first liquid inlet (211); and at least one second fluid stirring device (31), a gas distribution device (32) and the like are arranged in the lower sealing head. The liquid-phase carbonyl synthesis reactor disclosed by the utility model is simple in structure, uniform in gas-liquid distribution and good in mixing effect; the problems that a stirring paddle in an existing stirring tank type reactor vibrates obviously, the sealing difficulty is large, and the equipment maintenance cost is high are solved.
Owner:SOUTHWEST RES & DESIGN INST OF CHEM IND

Low-energy desulfurization methods

ActiveCN119896948Breduce outlet pressureReduce impact energy consumptionDispersed particle separation
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.
Owner:CHINA PETROLEUM & CHEMICAL CORP +2

A NMP distillation device

The invention provides an NMP distillation device, which relates to the technical field of NMP production equipment. The device comprises a main distillation tower shell, a plurality of tower plates arranged inside the main distillation tower shell and a downcomer arranged on the surface of the tower plates. A dehydration distillation tower and a post-treatment tower are arranged on both sides of the main distillation tower shell, and a reboiler, a cooling device, a tower kettle, an impurity separation device, an online analyzer and a waste liquid collection tank are connected through pipelines. The device also comprises: a plurality of liquid drawing rope bodies are arranged inside the main distillation tower shell; a constraint disc and an extrusion cam are arranged on the surface of the liquid drawing rope body; a driving wheel is arranged on the surface of the liquid drawing rope body; a first regulating wheel, a second regulating wheel and a third regulating wheel are arranged on the surface of the liquid drawing rope body; the invention can adjust the thickness of the liquid phase on the surface of the tower plate through the arrangement of the liquid drawing rope body, reduce the occurrence of gas flooding and liquid flooding, and further adjust the mass transfer efficiency inside the tower plate, and prolong the cleaning time of the tower plate through the adsorption of impurities in the gas phase and liquid phase mass transfer process by the liquid drawing rope body.
Owner:FUJIAN WEISHIMAI TECH CO LTD

Micro-interface enhanced oxidation system and oxidation method for preparing hydrogen peroxide

The invention provides a micro-interface enhanced oxidation system and an oxidation method for preparing hydrogen peroxide, wherein the micro-interface enhanced oxidation system includes: an oxidation reactor, wherein a top portion of a side surface of the oxidation reactor is provided with a liquid phase pipeline for delivering hydrogenated anthraquinone, and a bottom portion of the side surface of the oxidation reactor is provided with a gas phase pipeline for delivering air; and a liquid distributor, a packing section, a seal pan and a hybrid micro-interface unit that are arranged in order from top to bottom are arranged in the oxidation reactor, wherein the hybrid micro-interface unit comprises a upper-mounted micro-interface generator and a lower-mounted micro-interface generator that are communicated with each other up and down, and the hydrogenated anthraquinone delivered in goes down in turn until being mixed with the air in the hybrid micro- interfacial unit to be dispersed and crushed after being distributed through the liquid distributor. By adopting the micro-interface enhanced oxidation system of the present invention, the utilization rate of oxygen can be improved, and the occupied area is small, and the operation is simple.
Owner:NANJING YANCHANG REACTION TECH RES INST CO LTD

Process for preparing super-conductive carbon black by refining and separating catalytic slurry oil

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.
Owner:山东天弘化学有限公司 +1

A reaction kettle for solvent separation in synthetic resin

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.
Owner:JIANGMEN PAINT FACTORY

Carbon capture device and method

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.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

Process for preparing 11-bromo-undecylenic acid through microwave-assisted synthesis

The invention discloses a microwave-assisted synthesis process of 11-bromo-undecylenic acid, which comprises the following specific steps: mixing undecylenic acid and a non-polar solvent, adding an initiator, stirring and mixing, conveying the obtained mixed solution of preliminary reaction into a microwave reaction kettle, adjusting the microwave power, controlling a certain temperature, adding a catalyst, and reacting for 2-4 hours; and carrying out anti-Markov addition on the mixed solution and hydrogen bromide gas in a microwave reaction device to generate a bromo-undecanoic acid solution, feeding the prepared addition solution into a crystallization kettle, carrying out freezing crystallization, and filtering a crystallized product to obtain the 11-bromo-undecylenic acid. According to the microwave reaction kettle, through hydrogen bromide aeration and mechanical stirring, the gas-liquid mass transfer area is increased, and the mass transfer efficiency is improved; the 11-bromo-undecanoic acid is synthesized under the assistance of microwaves, so that stirring on a molecular level can be realized, the reaction time is greatly shortened, and the yield of a target product is effectively improved; meanwhile, the non-polar solvent with weak microwave absorption capacity is adopted, so that the heat effect generated by microwaves is effectively avoided, and the yield of the target product is higher.
Owner:ZHEJIANG UNIV OF TECH