114results about How to "Improve distillation efficiency" patented technology

The utility model relates to the technical field of rectification equipment, and particularly discloses hydrocyanic acid rectification equipment which comprises a tower body, a tower tray structure arranged in the tower body, a spraying structure arranged at the top of the tower and a liquid separation structure arranged at the bottom in the tower body, the liquid separation structure comprises a connecting ring table fixed on the inner wall of the tower body and a plurality of first separation plates fixed in the connecting ring table, and the bottom surfaces of the first separation plates are not in contact with the inner bottom surface of the tower body. The problems that hydrocyanic acid is easy to polymerize at the tower bottom and hydrocyanic acid residues exist exist.

The invention relates to the technical field of glycerol triacetate preparation, in particular to an esterification phase splitter for preparing glycerol triacetate, which comprises a tower tray arranged in a rectifying tower, umbrella-shaped covers are uniformly distributed on the upper surface of the tower tray, and the tower tray comprises a movable tray, a fixed tray, a riser and an adjusting mechanism. By optimizing the structure of the umbrella-shaped cover and the design of the adjusting mechanism, the problems of a viscous layer and entrainment caused by high viscosity of glycerol triacetate are solved, by reducing the diameter of the bottom of the umbrella-shaped cover and reducing the comprehensive height of the overflow weir, the liquid flowing space is enlarged, the liquid retention time is shortened, and by forming an air inlet groove and an adjusting hydraulic oil cylinder, the liquid retention time is shortened. The gas-phase flow area is increased, gas-liquid contact is optimized, entrainment is reduced, through adjustment of the hydraulic oil cylinder, adaptation to the requirements of different reaction stages is achieved, the height of the downcomer is increased, and the flooding risk is reduced.

The invention relates to the technical field of rectification, in particular to a rectifying tower for cracking C9 fractions, which comprises a tower body and a tower plate, the tower plate is arranged in the tower body, a CPD extraction device is arranged at the top end of the tower body, a DCPD side line extraction device is arranged in the middle of the tower body, and the lower part of the tower body is communicated with a solvent side line extraction device; a partition plate is arranged in the bottom end of the tower body, the space at the bottom of the tower body is divided into a flash evaporation space and a concentration space by the partition plate, the flash evaporation space is communicated with a C9 fraction supply pipeline through a cracking reactor, and the flash evaporation space is communicated with a tower kettle liquid return pipeline; a solvent extracted by the solvent side-draw device is mixed with tower bottoms extracted from the tower bottoms reflux pipeline, and then is heated by the reboiler and refluxed to the concentration space, and the concentration space is provided with a tower bottoms discharge pipeline; the influence of coking of materials in the rectifying tower or polymers on the rectifying operation can be reduced, and the stability of the rectifying operation is ensured.

The invention discloses a furan distillation and purification device for tetrahydrofuran raw materials, which comprises a distillation box, a preheating channel, a distillate flow guide assembly and a multi-stage filter assembly, and the multi-stage filter assembly comprises a first ultrafiltration membrane treatment mechanism, a second ion exchange resin treatment mechanism and a third molecular sieve treatment mechanism. The upper part of the feeding end of the distillation box is connected with a preheating channel, and inner inclined plates are arranged at the bottom of the distillation box and below the preheating channel. According to the furan distillation and purification device for the tetrahydrofuran raw material, when an existing furan distillation and purification device is used for treating a furan solution, although part of impurities can be removed, the purification effect is not thorough, and impurity residues still exist; meanwhile, the device is high in energy consumption in the distillation and extraction process and needs to depend on the combined use of a plurality of devices, so that the operation complexity is increased, the large loss is caused in the material conveying process, and the overall purification efficiency and the product quality are influenced.

The invention provides a four-tower reverse double-hot-trap double-effect methanol rectification energy-saving device and a process method.The four-tower reverse double-hot-trap double-effect methanol rectification energy-saving device comprises a pre-rectification tower, a vacuum rectification tower, a high-pressure rectification tower and a recovery tower which are sequentially connected, and the lower portion of the pre-rectification tower is connected with two reboilers; the lower parts of the vacuum rectifying tower and the high-pressure rectifying tower are respectively connected with a vacuum rectifying tower reboiler and a high-pressure rectifying tower reboiler; and the lower part of the recovery tower is connected with two reboilers. Wherein part of gas at the top of the high-pressure rectifying tower supplies heat to a vacuum rectifying tower reboiler, part of gas supplies heat to a pre-rectifying tower reboiler II, and a small part of top gas enters the pre-rectifying tower through a vacuum rectifying tower top vacuum injection pump and a recovery tower top vacuum injection pump to generate low pressure, so that negative pressure of the vacuum rectifying tower and the recovery tower is realized; and high-temperature wastewater produced at the bottom of the high-pressure rectifying tower supplies heat to the reboiler I of the recovery tower. Compared with the Haldor Topsoe flow process, the unit consumption of the steam for producing the refined methanol is reduced by 10-20%, and the obvious energy-saving effect of the methanol rectification flow process can be realized.

The invention discloses an ammonia distillation, dehydration and refining system for alcohol amine products. The system comprises an ammonia distillation device, a dehydration device, a vacuum device, a tail gas absorption device, a first ethyl rectification device, a second ethyl rectification device and a third ethyl rectification device. By optimizing the production process and adopting advanced production equipment, efficient, energy-saving and environment-friendly production of the alcohol amine product is realized.

The utility model relates to the technical field of distillation, and discloses an efficient distillation device for plant extraction, which comprises a heating main body, the heating main body comprises a heating tank and a distillation tank, the distillation tank is arranged on the inner side of the heating tank, the inner wall of the heating tank is fixedly connected with a plurality of groups of steam rings, and the steam rings are connected with the heating tank. When the device is used, the distillation retort can be mounted on the inner side of the heating tank, and the outer wall of the distillation retort is uniformly sleeved with the multiple groups of steam rings, so that steam generated by heating of the steam box enters the connecting pipe through the air inlet pipe and then is transmitted into the multiple steam rings through the connecting pipe; and finally, the steam is sprayed out by the spray head, so that the steam sprayed out by the spray head can be used for heating the juice in the distillation retort, and the spray head uniformly surrounds the outer wall of the distillation retort, so that the distillation retort is quickly and uniformly heated, and the distillation efficiency of the distillation device for plant extraction is effectively improved.

The invention discloses a distillation purification method for preparing a silane coupling agent, and belongs to the technical field of preparation of silane coupling agents. The distillation and purification method for preparing the silane coupling agent comprises the following steps: step 1, mixing a silane coupling agent crude product, tetrahydrofuran, an organic antioxidant and an auxiliary agent, heating, mixing and stirring to obtain a mixture; 2, adding the mixture into a distillation tower, heating and distilling, controlling the heating temperature and the distillation rate, and ensuring stable and continuous evaporation and condensation of the silane coupling agent; and 3, collecting the condensed liquid into a collector, separating the liquid, filtering, and drying to obtain the silane coupling agent. According to the method, the product purity and yield of the silane coupling agent can be effectively improved.

The utility model relates to the technical field of distillation towers, in particular to a crude anthracene distillation tower, which comprises a tower body and further comprises a condensing part arranged on the outer side of the tower body and used for condensing crude anthracene, and a collecting tank arranged on the outer side of the condensing part and used for collecting condensate. The adjusting part is arranged on the outer side of the collecting tank and is used for adjusting the internal pressure of the collecting tank; a stirring part for stirring liquid and a heater for heating the liquid are arranged in the tower body; the stirring rods are used for stirring a solution at the upper part, and the inclined rods are used for stirring and mixing a solution at the lower part of the tower body, so that the solution is uniformly heated, the distillation efficiency of the liquid is improved, the discharge pipe is used for discharging distilled waste residues, and the air pump is started to form a pressure difference between the collecting tank and the tower body, so that the distilled liquid flows into the collecting tank; before entering the collecting tank, the distillation gas enters the condenser through the pipeline for condensation treatment, and the condensed liquid flows into the collecting tank through the liquid conveying pipe for collection treatment.

The utility model relates to the technical field of rectification, in particular to an efficient rectification device which comprises a rectification tank, a reboiler and a condenser arranged at the top of the rectification tank, a feeding pipe is communicated with the middle of the side wall of the rectification tank, a feeding valve used for controlling feeding of the feeding pipe is arranged on the feeding pipe, a plurality of filter discs are evenly arranged in the rectification tank, and the reboiler is communicated with the condenser. A material scraping mechanism for scraping reaction materials on the inner wall of the rectification tank and preventing the materials from being adhered to the inner wall of the rectification tank during rectification is arranged in the rectification tank. When a gas phase and a liquid phase reversely flow in the rectification tank, the gas phase and the liquid phase are contacted on the filter discs for mass transfer due to the arrangement of the plurality of filter discs, so that the gas phase and the liquid phase are fully diffused on the filter discs, the contact area of countercurrent contact of the gas phase and the liquid phase is increased, the gas phase and the liquid phase are fully subjected to interphase heat and mass transfer, and the gas phase and the liquid phase are fully separated from each other. The volatile components in the liquid phase enter the gas phase, and the non-volatile components in the gas phase are transferred into the liquid phase, so that the rectification efficiency is improved.

The utility model discloses a gas-liquid separation device of a distillation still, which comprises a distillation still body, a heating pipe, a porous baffling mechanism and a driving device, the distillation still body is provided with a raw material input port arranged at the upper part, a distillation gas outlet and a discharge port arranged at the lower part; the heating pipe is arranged at the lower part in the distillation kettle body; the porous baffling mechanism comprises at least one movable baffle plate and at least one fixed baffle plate which are positioned in the distillation kettle body and are staggered along the vertical direction, and the fixed baffle plate is fixedly mounted in the distillation kettle body; the driving device is installed outside the distillation still body, the driving device is provided with a rotating end extending into the distillation still body, the rotating end is fixedly connected with the movable baffle plate, and the driving device is suitable for driving the movable baffle plate to rotate; wherein a baffle cavity channel is formed between the movable baffle plate and the fixed baffle plate. According to the utility model, gas-liquid separation of the distillation kettle can be realized, and the distillation efficiency is improved.

The utility model relates to medical intermediate rectification equipment which comprises a bottom plate, a rectifying cylinder is fixedly mounted on the upper surface of the bottom plate, a condensing cylinder is fixedly mounted on the upper surface of the bottom plate, an electric heating cover is arranged on the outer surface of the rectifying cylinder, a servo motor is fixedly mounted on the bottom surface of the rectifying cylinder, and a sealing bearing is fixedly embedded in the inner bottom wall of the rectifying cylinder. According to the device, a servo motor is arranged to drive a rotating rod and a plurality of stirring rods to rotate, and under the cooperation of the servo motor and an electric heating cover, raw materials can be stirred when being heated, so that the vaporization time of the raw materials can be shortened, and the rectification efficiency of the raw materials is improved; according to the rectifying device, raw materials can be quickly converted from a gas state to a liquid state, the rectified raw materials can be pumped into the rectifying cylinder for secondary rectifying treatment through cooperation of the pump body, the first feeding pipe and the first discharging pipe, and the rectifying quality of the raw materials is improved.

The utility model relates to the technical field of rectifying kettles, and discloses a rectifying kettle for rectifying and purifying chloroethane, which comprises a main body mechanism and an auxiliary mechanism, the auxiliary mechanism is positioned at the upper end of the main body mechanism, and the main body mechanism comprises a lower kettle, a flange and a liquid membrane separator; according to the rectifying still for rectifying and purifying the chloroethane, the main body mechanism is mounted, so that a liquid membrane separator plays a role in separation, the upper still fixes a feeding pipe and an exhaust pipe, a fixing frame fixes a rotating motor, the fixing and stability of the rotating motor are improved, the rotating motor provides power, and a rotating shaft fixes a rotating shaft; the rotating shaft drives the bubble pricking needle to rotate to prick generated bubbles, so that the problem of unsmooth gas rising caused by more bubbles in the rectification process is solved, the rectification efficiency is improved, the bubble pricking needle plays a role in pricking the bubbles, the heating pipe plays a role in heating liquid, and the heat preservation layer plays a role in heat preservation, so that the temperature in the kettle is kept consistent; the practicability of the rectifying still for rectifying and purifying the chloroethane is improved.

The utility model relates to the technical field of distillation towers, in particular to a distillation tower for acetic ester production. The utility model provides the distillation tower for acetic ester production, which is convenient for quickly draining steam. A distillation tower for acetate production comprises a tower body, a liquid inlet pipe, a steam collecting cover, a flow dividing cover, a fairing and the like, the upper side of the interior of the tower body is connected with the flow dividing cover, the flow dividing cover is located below the liquid inlet pipe in the tower body, the top of the flow dividing cover is connected with the fairing, and the upper end of the fairing is in butt joint with the steam collecting cover. The injected liquid can be uniformly shunted to the heating pipe below through the shunting cover, so that the injected liquid can be quickly heated and distilled by the heating pipe and the heating rod; and through the joint matching effect of the fairing and the flow dividing cover, the generated steam can be collected towards the middle part of the tower body and is upwards drained into the steam collecting cover, and then through the matching effect of the steam discharge pipe and the return pipe, the collected steam can be quickly discharged.

The invention discloses a rose hydrolat distillation device, relates to the technical field of rose hydrolat distillation, and solves the technical problems that the cooling water circulation efficiency is low, put raw materials are inconvenient to flatten, and water is inconvenient to replenish into a distillation bucket. The rose hydrolat distillation device comprises a bottom plate, and a condensation mechanism is arranged at the center of the top of the bottom plate; a cooling mechanism is arranged on the side surface of the condensation mechanism, and a distillation mechanism is arranged on the other side of the condensation mechanism. Through mutual cooperation of the mechanisms, the cyclic utilization efficiency of cooling water can be improved, waste is avoided, in the rose hydrolat extraction process, water is automatically supplemented into the distillation barrel, the dry burning condition is avoided, the water supplementing amount can be controlled, raw materials are evenly spread on the stainless steel drawer when the raw materials are put into the distillation barrel, and therefore the raw materials are evenly scattered on the stainless steel drawer when the raw materials are put into the distillation barrel. Therefore, the distillation extraction effect is improved, subsequent discharge of the distilled rose petals can be facilitated, the distillation efficiency of the rose hydrolat is improved, and the device is suitable for large-scale production of the rose hydrolat.

The utility model discloses a coal tar dehydration device which comprises a distillation flask (3), a reflux condensate water collector (7) connected with the distillation flask (3), a first collection flask (11) connected with the lower part of the reflux condensate water collector (7), and a coiled pipe condenser (10) and a second collection flask (12) which are sequentially connected with the upper part of the reflux condensate water collector (7), and a flow guide fan blade (6) is arranged in the reflux condensate water collector (7). The coal tar dehydration device provided by the utility model has the characteristics of simplicity and convenience in installation and operation, thorough water separation, high dehydration efficiency and no discharge of irritant gas.

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 invention discloses an alcohol distillation and purification system, belongs to distillation and purification of alcohol in the technical field of alcohol production, and aims to solve the technical problems that in the prior art, the content of methanol and n-propanol in finished edible alcohol exceeds standard values, and the quality of the finished product is low. Comprising a crude tower, an aldehyde removal tower, a water washing tower, a rectifying tower, a methanol removal tower, a recovery tower, an industrial alcohol purification tower and an industrial alcohol storage tank, the crude tower, the aldehyde removal tower, the water washing tower, the rectifying tower and the methanol removal tower are sequentially connected, and impurity outlets of the crude tower, the aldehyde removal tower, the water washing tower, the rectifying tower and the methanol removal tower are all connected with the recovery tower; low-concentration industrial alcohol in the recovery tower is input into an industrial alcohol purification tower, pure high-concentration alcohol output from the upper part of the industrial alcohol purification tower is conveyed to an aldehyde removal tower and a rectifying tower, high-concentration industrial alcohol output from the upper part of the industrial alcohol purification tower is conveyed to an industrial alcohol storage tank, and hot water output from the bottom of the industrial alcohol purification tower is conveyed to a water washing tower. The system can reduce the content of isoamyl alcohol, isobutanol and n-propyl alcohol in a finished product and improve the quality of the finished product.

The invention relates to a secondary fluorination system for synthesizing PF3. The secondary fluorination system comprises a main reactor, a condenser pipe, a secondary fluorination reactor and a cold trap, the invention also discloses a secondary fluorination process for synthesizing PF3, which comprises the following steps: introducing gas-phase HF into a liquid-phase PC13 raw material to generate gas-phase main products PF3 and HCl and a small amount of by-product fluorine chloride, carrying out secondary fluorination reaction on the products through a fluorinating agent ZnF2, almost completely converting the by-products into the target product PF3, and collecting the final product in a cold trap. According to the invention, the content of by-products in the cold trap is greatly reduced, the conversion rate of raw materials is improved, and the purification efficiency of the crude phosphorus trifluoride is improved.

The present invention relates to the field of artificial intelligence technology, and discloses a two-dimensional normalized knowledge distillation method, system and terminal based on class relationship. The method inputs samples in a training set batch into a teacher model and a student model respectively, obtains the output of the last hidden layer of each teacher model and the student model, namely, teacher logits and student logits; performs inter-class dimension normalization correction and intra-class dimension normalization correction on each logit in the teacher logits and the student logits respectively, and calculates the inter-class normalization loss and the intra-class normalization loss according to the correction results; trains the student logits and the original true labels of the samples, and calculates the classification loss; weights to obtain the total training loss, performs gradient descent and back propagation based on the total training loss, thereby optimizing the student model parameters, and then uses the next batch of samples in the training set to continuously optimize the learning model until the student model converges. The present invention can improve the accuracy and training efficiency of logit knowledge distillation.

The invention discloses rectification equipment for preparing isohexylene glycol, and relates to the technical field of isohexylene glycol preparation, the rectification equipment comprises a rectification tower main body, a steam pipe, a liquid pipe and a support column. According to the rectification equipment for preparing the isohexylene glycol, when the isohexylene glycol is rectified, the driving motor drives the driving rod to rotate, the pushing disc can effectively push steam on the lower portion of the rectification tower body to flow upwards through cooperation of the spiral groove and the balls, and the rectification efficiency is improved. Meanwhile, the lifting block is matched with the conversion block to ensure that the pushing disc is in an open state when descending, so that the increase of pressure drop in the tower caused by steam extrusion is avoided, and the energy consumption is reduced. In addition, the rotation of the driving rod can also drive the convex block I to move circumferentially, and through the cooperation of the spring II and the sliding rod, the tower plate continuously vibrates, the static state of liquid is broken, mixing and updating are promoted, the residence time is shortened, local overheating or blockage is avoided, smooth flowing of the liquid is kept, and the rectification efficiency is further improved.

The embodiment of the present application discloses a data processing method, device, electronic device and medium, which are applied to the field of machine learning technology. The method includes: obtaining sample text data and corresponding translation text data, inputting the sample text data into a first translation model to obtain a first translation result corresponding to each text word, and inputting the sample text data into a second translation model to obtain a second translation result corresponding to each text word, obtaining important indicator parameters of the translation words corresponding to each text word, and determining the target text words from N text words according to the important indicator parameters, determining the model translation loss function according to the first translation result, the corresponding second translation result and the corresponding translation word corresponding to the target text word, and correcting the first translation model according to the model translation loss function to obtain the target translation model. By adopting the embodiment of the present application, the accuracy of the target translation model obtained can be improved.

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 kidney tonifying agent containing a ginseng extract and an extraction method of the kidney tonifying agent, and relates to the technical field of plant extraction. According to the kidney tonifying agent containing the ginseng extract and the extraction method of the kidney tonifying agent, the kidney tonifying agent comprises extraction equipment, the outer wall of the extraction equipment is fixedly connected with a treatment bin, the outer wall of the treatment bin is provided with a feeding bin, the bottom of the treatment bin is fixedly connected with supporting legs, and the inner wall of the treatment bin is fixedly connected with a stirring mechanism. According to the kidney tonifying agent containing the ginseng extract and the extraction method of the kidney tonifying agent, the first bearing is arranged at the position, deviating from the circle center, of the rotating disc, so that a poke rod can be driven to move in the rotating process of the rotating disc, and large-amplitude movement of the poke rod is generated; the plants in the treatment bin can be extruded in the ascending and descending processes of the poke rod, and when the poke rod is inserted into the accumulated plants, the accumulated plants are inserted into the holes by the poke rod, so that more parts of the plants are leaked.

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 discloses a distillation device for preparing isohexanediol, and relates to the technical field of preparing isohexanediol, including a distillation tower body, a steam pipe, a liquid pipe, and a support. In the distillation device for preparing isohexanediol, when distilling isohexanediol, a driving motor drives a driving rod to rotate, and through the cooperation of a spiral groove and a ball, a push plate can effectively push the steam at the lower part of the distillation tower body to circulate upward, thereby improving the distillation efficiency. At the same time, the cooperation of a lifting block and a conversion block ensures that the push plate is in an open state when descending, thereby avoiding an increase in the pressure drop in the tower caused by steam extrusion, thereby reducing energy consumption. In addition, the rotation of the driving rod can also drive a convex block to move in a circle, and through the cooperation of a spring two and a sliding rod, the tower plate is continuously vibrated, breaking the static state of the liquid, promoting mixing and renewal, reducing the residence time, avoiding local overheating or blockage, keeping the liquid flowing smoothly, and further improving the distillation efficiency.

The utility model discloses a biochemical engineering distillation still which comprises a main body unit, the main body unit comprises a heat preservation box, a distillation still body is fixedly connected to the inner wall of the heat preservation box, and a plurality of electric heating plates are fixedly connected to the side wall of the distillation still body at equal intervals; the stirring assembly comprises a fixing cover, and the stirring device has the beneficial effects that a servo motor, a center shaft, a driving gear, a middle gear and a driven gear are arranged to drive a rotating rod to rotate, the rotating rod and the center shaft can drive a second stirring blade and a first stirring blade to rotate, and materials are stirred through the first stirring blade and the second stirring blade; a central shaft, a first bevel gear and a second bevel gear are arranged to drive a cross rod and a stirring plate to rotate, and materials at the bottom of the distillation kettle body are turned and stirred through the stirring plate, so that the stirring effect is improved, the materials are uniformly heated, and the efficiency of the distillation process is improved.

The present invention provides a Kjeldahl nitrogen determination high-efficiency distillation system, a Kjeldahl nitrogen determination instrument and a distillation method, and belongs to the technical field of Kjeldahl nitrogen determination. The present invention proposes for the first time the strategies and corresponding structures of "steady-state flash" (i.e. Steady-Flash) and "green condensation". The superheated steam for heating the reagent in the digestive tube is two streams, which are heated at the top and bottom of the reagent at the same time. The splash-proof bottle has high temperature and low pressure without blind-end pipelines. The condenser relies on air cooling to dissipate heat, and low temperature and low pressure are achieved through "green technology"; the high-temperature reagent in the digestive tube is lifted by steam, and the boiling point is reduced after decompression, and the "flash evaporation" phenomenon continues to occur. While the reagent is stably and accurately distilled, the reagent distillation speed is accelerated, the distillation time is shortened, and the distillation efficiency is improved.

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.