33results about How to "Improve distillation efficiency" patented technology

The application provides a titanium reactor for reducing low-boiling-point impurities at a large cover flange and a use method thereof. The titanium reactor for reducing low-boiling-point impurities at a large cover flange comprises a hollow structure with an open top, a cylinder body, a large cover connected to the top of the cylinder body, a first through hole provided on the large cover along an axial direction, a second through hole cavity provided in a radially direction in a lower convex head of the large cover, and a first through hole communicated with the second through hole cavity; a center tube communicated with an inner cavity of the cylinder body through the first through hole, a distillation tube provided in the second through hole cavity, a heating device provided between the distillation tube and the second through hole cavity, and the distillation tube communicated with the center tube. The application forms two distillation paths in the reactor by adding a transverse distillation channel to the head of the large cover, so that effective distillation of the part below the head of the large cover in the reactor is ensured, and condensation and accumulation of low-boiling-point substances between the head of the large cover and the wall of the reactor are avoided, thereby improving the distillation efficiency and avoiding pollution of products caused by opening the cover.

The utility model relates to a distillation device for methyl anthranilate production belongs to distillation equipment technical field, including distillation column, heating box, heater, steam outlet pipe, condenser, a plurality of support filter plates are fixed in the distillation column, the top of support filter plate is equipped with the filler layer, the top of intermediate filler layer is equipped with liquid inlet pipe, the condenser includes condensing box, and the condensing box is connected with inlet steam pipe and outlet steam pipe, and the inlet steam pipe is connected with the steam outlet pipe between the flow guide pipe, and the outer end of flow guide pipe is spirally wound with cooling air pipe, a plurality of liquid discharge pipes are equipped at the bottom of condensing box, and the liquid discharge pipe close to inlet steam pipe is connected with the return pipe, and the other end of return pipe is connected to the upper part of the uppermost filler layer, the utility model makes methyl anthranilate and other impurities more fully separate, has improved distillation efficiency significantly, first utilizes the air cooling to carry out the preliminary cooling to steam, reduces the load of water cooling system, promotes the purity, and the tower top temperature will not cause the sudden drop when refluxing, influences the distillation effect.

The invention discloses a green chemical reduced pressure distillation energy-saving reaction device and method, and relates to the technical field of green chemical equipment, the device comprises a reaction kettle main body, a kettle cover, a stirring rod, a cleaning scraper, a guide frame and a plurality of support columns, a washing mechanism for spraying water to wash the inner wall of the reaction kettle main body is arranged on the stirring rod, and a pushing mechanism for pushing the cleaning scraping plate to move is arranged on the guide frame. Through the flushing mechanism, the sealing performance in the reaction process can be ensured through plugging and covering during distillation operation, and high-pressure cleaning water can be dynamically and uniformly sprayed to all corners of the inner wall of the reaction kettle main body in cooperation with rotation of a stirring rod during cleaning operation, so that the purpose of flushing the inner wall of the reaction kettle main body without dead corners is achieved; therefore, the coverage rate and efficiency of cleaning are further improved, material residues are avoided, and the purity and stability of subsequent distillation reaction are effectively guaranteed.

The utility model relates to primary amine production technical field, concretely is primary amine rectification purification system. Primary amine rectification purification system, including storage tank, storage tank is connected with rectifying column through heat exchanger, and the bottom of rectifying column is connected with membrane evaporator through pipeline, and the inside of rectifying column is equipped with primary condenser, and rectifying column is connected with gas -liquid separation tank through secondary condenser. The system is through the additional membrane evaporator, and the liquid phase material of rectifying column bottom discharge is handled again. The unique structure design of membrane evaporator makes it can distribute liquid material into film shape evenly, greatly increases evaporation area, strengthens mass transfer process, further separates the primary amine and impurity remaining in liquid phase, significantly improves the purity of product, satisfies the strict requirement of high -end application field to primary amine high purity.

The invention relates to a petrochemical engineering emergency early warning method and device based on large model data distillation. The method comprises the steps of obtaining original data, preprocessing and standardizing the original data, and constructing a data set. The method comprises the following steps: mapping a data set from a high-dimensional space to a low-dimensional space through linear transformation, and performing eigenvalue decomposition on a covariance matrix of data in the data set to obtain eigenvalues and eigenvectors; and sorting the feature vectors according to the feature values from large to small, selecting the feature vectors of which the feature value ranking is not lower than a first threshold value to form a new feature space, and extracting important features from the feature space through LASSO regression. And calling a CNN deep learning model to extract key features from the important features, distilling representative features in the original data, and outputting a feature set after distillation. And performing anomaly detection on the petrochemical engineering system through a clustering algorithm according to the feature set after distillation, and triggering early warning when a detection result does not meet a preset condition.

The invention discloses an integrated solar water purification, power generation and hydrogen production system which comprises a floating plate, a device shell, a distillation and hydrogen production device, a storage battery, a control system, a seawater taking and purifying device, a hydrogen storage bottle and a water storage bottle. The floating plate floats on the sea surface and is internally provided with a groove embedded into the device shell, so that internal equipment is protected from being impacted by the external environment. A rotating mechanism is arranged above the device shell and connected with the solar photovoltaic panel, and the rotating mechanism can adjust the orientation and the inclination angle of the photovoltaic panel so as to achieve maximum utilization of solar energy. Seawater purification, solar power generation and hydrogen preparation are integrated on the same floating platform, the number and occupied space of equipment are reduced, and the device is suitable for seaborne and space limited scenes. The condensation aluminum plate is in contact with seawater to keep low temperature, and the aerogel layer reduces heat loss and improves distillation efficiency; the carbon black nanofluid is heated to increase the electrolysis temperature, and the hydrogen production rate is increased; structural modular design is adopted, the shell and other components can be manufactured through 3D copying, and batch production and rapid deployment are facilitated.

This utility model discloses a system for removing impurities from carbon-containing chlorosilanes and recovering chlorosilanes, comprising: a first distillation column for receiving and concentrating carbon-containing chlorosilanes; a first adsorption and reaction device connected to the first distillation column, the first adsorption and reaction device being filled with a metal adsorbent material and equipped with a silicon tetrachloride feed pipeline; a second adsorption and reaction device connected to the first adsorption and reaction device, the second adsorption and reaction device being filled with a methyldichlorosilane adsorbent material; a second distillation column connected to the second adsorption and reaction device; and a third distillation column connected to the second distillation column. This utility model can adsorb and concentrate metal impurities in carbon-containing chlorosilanes as a catalyst for the carbon removal reaction, effectively avoiding deactivation and failure caused by metal impurities encapsulating the resin catalyst, improving the conversion rate of methyldichlorosilane, and effectively avoiding the disproportionation reaction of silicon trichloride in the presence of the resin catalyst, thereby improving the carbon removal efficiency and chlorosilane recovery efficiency.

The invention relates to a coupling device for lactide production and a production method, the coupling device comprises a depolymerization reactor, a heat exchanger and a rectifying tower, the heat exchanger is coupled with the depolymerization reactor and the rectifying tower, and the heat exchanger is coupled to the top of the depolymerization reactor and the bottom of the rectifying tower; the production method comprises the following steps: conveying a lactic acid oligomer into a depolymerization reactor, depolymerizing into crude lactide steam containing lactic acid, the lactic acid oligomer, water and lactide, after the crude lactide steam passes through a heat exchanger coupled with the top of the depolymerization reactor and a rectifying tower I, cooling the lactic acid oligomer back to the depolymerization reactor, and continuously depolymerizing into lactide, the remaining components enter a rectifying tower II, lactic acid and water in light components are extracted from the tower top, and lactide is extracted from the tower bottom section. Compared with the prior art, the lactide synthesis and purification method provided by the invention has the advantages of high yield, low energy consumption and high purity.

The application discloses a discharging structure of an automatic distillation device, and relates to the field of distillation devices.The device comprises a workbench, the top surface of the workbench is provided with a heating furnace, the top surface of the heating furnace is provided with a distillation bin, the inside of the distillation bin is provided with an auxiliary mechanism for concentrating steam, and the inside of the distillation bin is provided with a discharging structure for collecting essential oil.A plurality of round holes are arranged in the annular mounting plate, steam generated by the heated materials can be more evenly dispersed into the distillation bin during the rising process, the contact area between the steam and the materials is increased, the distillation efficiency is improved, the distillation process is more sufficient, the dispersed steam in the distillation bin is guided to the collecting bin through the air pipe, the steam can smoothly enter the subsequent condensation and collection links, and the smooth operation of the whole distillation process is ensured.

The device comprises a first material receiving funnel, an upper connecting frame is connected to the upper end of the first material receiving funnel, mounting rods are connected to the left side and the right side of the rear end of the upper connecting frame, a second material receiving funnel is connected to the outer portion of the lower end of the first material receiving funnel in a sleeved mode, and the second material receiving funnel is connected to the lower end of the second material receiving funnel. The lower end of the second material receiving hopper communicates with a first material guiding barrel, the lower end of the first material guiding barrel is sleeved with a second material guiding barrel, the lower side of the exterior of the second material guiding barrel is rotationally connected with a rocker arm, the interior of the upper end of the first material guiding barrel is connected with a lower connecting frame, and the upper end of the lower connecting frame is arranged in a triangular face mode; the movable cutting knife and the cutting rotating ring are arranged at the lower end of the first material receiving funnel, and the cutting rotating ring is driven to rotate through eccentric motion of the first chain, so that vinasse is preliminarily cut; meanwhile, the fixed cutting knife is mounted on the inner wall of the second guide cylinder to secondarily cut the gliding vinasse, so that caking is effectively prevented, and the looseness of the vinasse is improved.

The utility model discloses a lubricating oil layered distillation recovery device which comprises a distillation retort, a distillation retort cover is arranged at the top end of the distillation retort, an oil inlet pipe for feeding lubricating oil is fixedly installed at the top end of the distillation retort cover, a discharging pipe is fixedly installed at the bottom end of the distillation retort, and a mixing assembly for increasing heating uniformity is arranged in the distillation retort. The mixing assembly comprises a connecting gear arranged in the distillation retort, a rotating block rotationally connected with the connecting gear and a rotating motor fixedly mounted at the top end of the distillation retort cover, and the output shaft end of the rotating motor penetrates through the distillation retort cover and the connecting gear to be fixedly mounted with the rotating block; connecting blocks are uniformly and fixedly mounted on the periphery of the rotating block in a surrounding manner; according to the utility model, the mixing assembly can drive the stirring blades to rotate in the distillation retort in the form of autorotation and revolution, so that the heating uniformity of lubricating oil during distillation is improved, and the distillation efficiency is improved.

The utility model relates to the technical field of aromatic hydrocarbon solvent rectification, in particular to a high-boiling-point aromatic hydrocarbon rectification heat exchanger which comprises a base, a rotating handle is arranged on one side of the base, a screw rod is installed on one side of the rotating handle, the surface of the screw rod is in threaded connection with a clamping block, and sliding grooves are formed in the two ends of the middle of the upper surface of the base. Sliding grooves are formed in the two sides of the heat exchanger body, sliding blocks are slidably connected into the sliding grooves, clamping grooves are formed in one sides of the sliding blocks, the heat exchanger body is installed at the tops of the sliding blocks, a feeding port is formed in the top end of one side of the heat exchanger body, a discharging port is formed in the top end of the other side of the heat exchanger body, and convex rings are installed on the two sides of the heat exchanger body. A cover plate is connected into the convex ring in a sleeved mode, and vertical frames are installed on the two sides of the outer surface of the convex ring. According to the improved heat exchanger, tedious bolt dismounting and mounting operation is avoided, the dismounting and mounting efficiency of the heat exchanger is improved, meanwhile, the interior of the heat exchanger is easier to clean and maintain, and the distillation efficiency of an aromatic solvent is improved.

The utility model discloses a distillation and extraction device for preparing wormwood essential oil, relates to the technical field of distillation and extraction, and aims to solve the problems that in the prior art, raw materials are suspended through a material containing barrel, so that the raw materials are in full contact with steam, but the raw materials are still accumulated in the material containing barrel, so that the middle parts of the accumulated raw materials are in limited contact with the steam; and the distillation effect is influenced. A separation plate is fixedly connected to the lower end in the distillation device, a material containing barrel is arranged at the position, at the upper end of the separation plate, in the distillation device, a stirring shaft is rotationally connected to the middle in the material containing barrel, a plurality of stirring rods are fixedly connected to the two sides of the stirring shaft, and a steam generator is connected to one side of the distillation device; the other side of the distillation device is provided with a condensing device, and the lower end of the condensing device is connected with an oil-water separator, so that automatic stirring of a wormwood raw material in the material containing barrel is realized, accumulation of the raw material is effectively prevented, and full contact between steam and the wormwood raw material is ensured.

This invention discloses a digestion apparatus for determining the content of polyisoprene, comprising a steam generating flask, with a conduit connected to the top of the steam generating flask, and a Claisen inductor connected to the end of the conduit away from the steam generating flask. This digestion apparatus provides a reaction site through the steam generating flask, generating stable steam, which is then provided with a uniform heat source via a heating seat to accelerate sample digestion and prevent localized overheating. The steam is then introduced into the Claisen inductor via the conduit. The Claisen inductor enables multifunctional connections, preventing sample loss, improving reaction efficiency, providing safety protection, preventing harmful gas leakage, improving reaction control precision, and ensuring optimal experimental conditions. The digestion flask provides a sealed, high-temperature and high-pressure resistant reaction environment, promoting the complete decomposition of organic matter in the sample and ensuring reaction uniformity and safety.

The utility model discloses a novel detachable efficient heat and mass transfer air sweeping type membrane distillation component which comprises a shell and a conveying pipeline, a membrane component is arranged on the inner side of the shell, a PTFE membrane and a silica gel gasket are arranged on the membrane component respectively, a plurality of sets of screws are arranged at one end of the membrane component, and air sweeping cavities are formed in the two sides of the top of the membrane component; according to the utility model, air sweeping type membrane distillation is adopted, so that the membrane flux and the distillation efficiency are effectively improved while the mass transfer resistance in the treatment process is reduced; in the distillation process, the hot test feed liquid does not make direct contact with the membrane, the probability and risk of membrane pollution are reduced, the anti-pollution capacity of the membrane is improved, the PTFE membrane is adopted, the product has excellent chemical stability and corrosion resistance, the anti-pollution capacity of the membrane can be effectively improved, the service life of the membrane can be effectively prolonged, and the product has high porosity and high flux and is suitable for industrial production. High-flux filtration or separation is realized, and the production efficiency is improved.

The utility model relates to the technical field of rectification devices, and discloses an efficient rectification device for leather assistant production, which comprises a rectification tower body, a plurality of sieve plates are fixedly connected in the rectification tower body in a staggered manner, and the left side of the rectification tower body is connected with a reboiler through a circulating pipeline. A feeding pipe is fixedly connected to the left side surface of the rectifying tower body, an arc-shaped shell is fixedly connected to the left side inner wall surface of the rectifying tower body, a reinforcing rod is fixedly connected to the right side inner wall surface of the arc-shaped shell, a liquid distribution filter screen is fixedly connected to the interior of the arc-shaped shell, and an arc-shaped inclined plate is fixedly connected to the bottom of the arc-shaped shell. According to the utility model, through the matching of the arc-shaped shell, the reinforcing rod, the liquid distribution filter screen and the arc-shaped inclined plate, a liquid material entering the rectifying tower body through the feeding pipe can be buffered and decelerated, and the material flows along the tower wall and is more stably blended into a gas-liquid system in the tower, so that a liquid layer on a sieve plate is prevented from being burst open due to direct falling of the liquid.

The utility model discloses traditional Chinese medicine experimental distillation equipment which comprises a heating box, a strip-shaped groove is formed in one side of the interior of the heating box, a threaded rod is rotatably installed in the strip-shaped groove, the surface of the threaded rod is sleeved with a threaded sleeve in a threaded mode, and a motor is fixedly installed at the top of the heating box. The output end of the motor penetrates through the heating box and is fixedly connected with the top of the threaded rod, an adjusting rod is fixedly installed on one side of the threaded sleeve, a fixing plate is fixedly installed at the bottom of the adjusting rod, storage racks are fixedly installed on the two sides of the top of the fixing plate, clamping grooves are formed in the tops of the storage racks, and the clamping grooves are fixedly connected with the fixing plate. A cover plate is fixedly mounted on one side of the adjusting rod, and the outer surface of the cover plate is movably connected with the inner surface of the heating box. According to the traditional Chinese medicine experimental distillation equipment, an operator starts a motor, the motor runs to enable a threaded rod to rotate, then the threaded rod drives a threaded sleeve to slide in a strip-shaped groove, and then the threaded sleeve drives an adjusting rod to slide.

This invention relates to a method for predicting the thermal storage performance of materials based on multi-source domain knowledge distillation. First, the crystal structure of a first sample is obtained, and its thermal storage performance parameters are calculated using first-principles calculations to construct a target dataset. Second, the crystal structure and various readily available physicochemical properties of a second sample are searched, and multiple source domain pre-training datasets are constructed by grouping according to different parameters. Next, isomorphic second models are trained using each source domain dataset, with each model predicting one physicochemical property parameter, and its second intermediate layer feature representation is extracted. Then, a first model with the same structure as the first sample is trained to predict the thermal storage performance parameters, and knowledge distillation is introduced during training: the intermediate layer features of each second model are fused using learnable weighted methods to generate reference features. The difference between these reference features and the first intermediate layer features of the first model is calculated, and the model is optimized by combining the error of the predicted values. Finally, the crystal structure of the sample to be predicted is input into the trained first model to obtain the predicted thermal storage performance parameters. This method is suitable for small-sample scenarios with limited thermal storage performance label data and can provide rational guidance for the design of thermal storage materials.

The invention discloses a distillation device and method for recycling an impurity-containing solvent, and relates to the technical field of distillation.The distillation device comprises a distillation box, a condenser, a connecting cover, a condensation backflow water pan, a temperature sensor, a heating piece, a circulating stirring mechanism and a liquid level detection mechanism, the distillation device connecting cover is of a conical structure, an upper end opening of the distillation device connecting cover is connected with one end of a steam pipe, the other end of the steam pipe of the distillation device penetrates through the distillation device condenser, and the distillation device condensation backflow water receiving disc is fixed to the lower portion of the distillation device connecting cover. A distillation device circulation stirring mechanism and a liquid level detection mechanism are arranged on the side face of the distillation device distillation box, a distillation device temperature sensor is arranged at the bottom of the distillation device distillation box, and multiple layers of distillation device heating pieces are sequentially arranged in the distillation device distillation box from bottom to top. The distillation efficiency is improved.

The utility model relates to the technical field of chemical production equipment, in particular to an efficient and energy-saving rectifying device for benzaldehyde production, which comprises a rectifying tower component, a preheating component and an energy integration component are arranged on the side surface of the rectifying tower component, and an intelligent control component is arranged on the side surface of the preheating component; preheated raw materials are conveyed into the tower body through the shell-and-tube preheater, the temperature is close to or reaches the temperature required by reaction, the reaction rate can be remarkably increased, the reaction time can be shortened, the production efficiency is improved, the reaction can be ensured to be carried out under the condition closer to the optimal temperature through preheating, the conversion rate of reactants is improved, and the production cost is reduced. And in the rectification process, the preheated raw material can distribute heat more uniformly, and the fluctuation of heat in the tower is reduced, so that the rectification efficiency is improved, and the purity and the quality of the product are improved.

This utility model discloses a eucalyptus leaf essential oil distillation extraction device, including a shell, a cover detachably connected to the shell, an annular filter cylinder, a first steam section, a second steam pipe, a motor, a steam outlet pipe, a stirring section, and a support ring. The advantages of this utility model are: steam is introduced into the shell through the first steam section and the second steam pipe, and the eucalyptus leaf raw material in the annular cavity of the annular filter cylinder is fully distilled and extracted to obtain eucalyptus leaf essential oil through a combination of internal and external methods, effectively improving the distillation efficiency; the stirring section, driven by the motor, agitates the eucalyptus leaf raw material, creating gaps so that the eucalyptus leaf raw material stacked inside is also fully distilled.

The application discloses a nitromethane continuous distillation device, and relates to the technical field of nitromethane separation.The application has the advantages that the distillation device body is provided with an outer cylinder and an inner cylinder connected in sequence from the outside to the inside at the rear end of the distillation device body, a jacket is connected to the outer wall of the outer cylinder, and a hollow roller shaft is rotatably connected to the inner wall of a through hole in the middle of the distillation device body.The device adopts a double heating mode, significantly improves the uniformity of material heating, continuously rotates an auger to push the axial transmission of the material, realizes continuous feeding, continuous distillation and continuous discharging, and the spiral blades rotate synchronously with the inner cylinder to continuously scrape off the impurities on the inner wall of the outer cylinder, so that the heat conduction surface is kept clean and uniform, and the product purity and production stability are improved.The application effectively solves the problems of low intermittent operation efficiency, uneven heating and inner wall scaling of the existing nitromethane distillation device, realizes the continuous production of nitromethane, and has important industrial application value.

The utility model relates to the technical field of chemical product treatment, and discloses a chemical product multistage rectification and impurity adsorption combined treatment device which comprises a raw material tank, a multistage rectification tower, an adsorption tower and a collection tank, an access door is hinged to the front end of the adsorption tower, a locking assembly is connected to the outer side of the access door, and a detachable adsorption assembly is connected to the interior of the adsorption tower; compared with the prior art, the adsorption tower has the advantages that when the adsorption layer loses the adsorption capacity, the adsorption layer can be quickly taken out and replaced with a new adsorption layer, complex operation on the whole adsorption tower is not needed, the shutdown maintenance time is greatly shortened, and the maintenance convenience is improved; the access door can be effectively prevented from being accidentally opened, safety accidents caused by injury of operators or material leakage are avoided, and the safety is improved; the number of the rectification units can be flexibly adjusted according to actual requirements, and the applicability and the rectification efficiency are improved.

The utility model discloses distillation and purification equipment which comprises a water vapor generating device, a reaction device is arranged on the right side of the water vapor generating device, a condensing device is arranged on the right side of the reaction device, and a collecting device is arranged at the bottom of the condensing device. After water vapor is conveyed to the reaction kettle through the heat preservation pipe, the stirring blades are driven by the motor to rotate, so that raw materials are stirred, the distillation efficiency is improved, the sealing performance is improved through the matching of the sealing rings and the bolts, and effective components in cistanche liquid can be effectively prevented from being damaged by adopting water vapor low-temperature extraction; oil liquid is added into the oil bath pan, then water is added into the steam pan through the water inlet pipe, then the heating base is started, oil bath heating is conducted on the water, and steam is conveyed to the reaction device through the heat preservation pipe.

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.

The utility model relates to the technical field of chemical production environmental protection, and discloses a diacetone alcohol production raffinate recovery device which comprises a recovery assembly, a filter assembly is placed on the upper portion in the recovery assembly, and the filter assembly comprises a primary filter part, an intermediate filter part and an advanced filter part. The primary filtering part, the intermediate filtering part and the high-grade filtering part are sequentially stacked from top to bottom, and the recycling assembly is externally connected with a heating assembly in a sleeving manner; the heating assembly comprises a heating cylinder, one side of the upper portion outside the peripheral surface of the heating cylinder is fixedly connected with an oil inlet piece, and one side surface of the bottom surface of the heating cylinder is fixedly connected with an oil outlet piece. According to the diacetone alcohol production raffinate recovery device, through the arrangement of the filtering assembly and the heating assembly, the problems that when an existing diacetone alcohol production raffinate recovery device is used, impurities in raffinate are not thoroughly separated, the purity of recovered diacetone alcohol is not high, and certain limitation exists in use are solved; or the energy consumption is high in the recovery process, and the production cost is increased.

The present application belongs to the technical field of petroleum chemical industry, and discloses a condensate oil separation process and device. The core of the condensate oil separation process is to improve the 'light and heavy gradual separation' process into a 'light, medium and heavy simultaneous separation' new process, and to open the side line production in the primary distillation column and the fractionating column of the condensate oil separation device. Part of the intermediate components are separated in advance, so that the back mixing of the intermediate component light naphtha in the primary distillation column and the back mixing of the intermediate component heavy naphtha in the fractionating column can be reduced, repeated rectification can be avoided, the separation difficulty of the system and the energy consumption can be effectively reduced; the C5 separation tower of the old original process is used for separating the mixed fraction of light naphtha and heavy naphtha after the pressure reduction transformation of the C5 separation tower; the heat pump technology is used in the debutanizer, the low-grade heat at the top of the tower is upgraded to serve as the reboiling heat source at the bottom of the debutanizer, part of the steam at the bottom of the tower is replaced, and the consumption of the cold utility at the top of the tower is reduced.

The utility model provides a methacrylic acid distillation device, which belongs to the field of methacrylic acid distillation and comprises a distillation tower, the distillation tower is divided into an upper cavity and a lower cavity, a heating component is connected in the cavity at the bottom of the distillation tower, and the heating component is used for distilling methacrylic acid; a collecting mechanism is arranged in the chamber at the top of the distillation tower and is used for collecting a methacrylic acid solution; the collecting mechanism comprises a top plate arranged at the top of the distillation tower, a water tank is formed in the bottom of the top plate, the bottom of the water tank is connected with a gas circulating pipe, and the gas circulating pipe is used for guiding out the gasified methacrylic acid material; according to the utility model, the distillation tower is connected with the collecting mechanism, so that gasified methacrylic acid can be cooled and collected in time, and steam loss and insufficient condensation are avoided.

The application discloses a device and method for producing high-purity nitrogen by flash exhaust low-temperature pressurization circulation, which comprises an air compressor, a purification system and a cold box, wherein the cold box comprises a main heat exchanger, an expander, a rectifying tower, a flash tower, a condenser and a pressure reducing valve. The application aims at overcoming the problems of low extraction rate, high energy consumption of single-tower rectification and high investment of double-tower rectification in the prior art, and provides a device and method for obtaining high-purity nitrogen by cryogenic separation, which have the advantages of low energy consumption, low investment, small land occupation and economic rationality by recycling the nitrogen component in the flash exhaust and the compression work of the nitrogen component.

The utility model relates to the technical field of raw material recovery, and discloses a raw material recovery device for carbon aerogel preparation, which comprises a cylinder body, one side of the top end of the cylinder body is fixedly connected with a material tank, one side of the top end of the cylinder body is fixedly communicated with a steam pipe, and the middle part of the top end of the cylinder body is fixedly provided with a speed reducing motor; the output end of the speed reduction motor penetrates through the inner wall of the barrel and is fixedly connected with a vertical shaft, stirring blades are fixedly connected to the middle and the bottom of the vertical shaft, a brushing assembly is installed on the surface of the vertical shaft, and a spiral pipe is fixedly connected to the inner wall of the material tank. The brushing assembly comprises two supporting rods, two grooves, two elastic pieces, two connecting rods and a brush. According to the utility model, steam is utilized to preheat a carbon aerogel raw material, heat in the steam can be utilized, more energy is saved, meanwhile, the heating efficiency during distillation is improved, and the inner wall of the recovery device is convenient to clean by utilizing the brushing assembly and the vibration motor.