10results about How to "Improve the distillation effect" patented technology

The utility model relates to acetic acid rectification energy -conserving separation device technical field, and disclose acetic acid rectification energy -conserving separation device, including rectifying tank, the right side of rectifying tank places the heat preservation box, the outer wall of rectifying tank is penetrated respectively with air inlet pipe and pressure reducing pipe, the one end of air inlet pipe is equipped with igniter in rectifying tank inside, the top of rectifying tank is penetrated respectively with feeding pipe and reflux tube. This acetic acid rectification energy -conserving separation device, through setting up rectifying tank, pressure reducing pipe, gas pipe, reflux tube, heat preservation layer, solenoid pressure reducing valve structure, make the device in the operation process, high temperature and high pressure air will be through the opening of solenoid pressure reducing valve and be arranged into the heat preservation interlayer, thereby guarantee the safety of the device in the operation process, and in the subsequent heating process, high temperature and high pressure air in the heat preservation interlayer is directly arranged into rectifying tank through reflux tube again, to this reduces the combustion and use of carbon monoxide, and further improves the energy -conserving effect of the device.

The application provides a metal organic framework rectification filler, a preparation method and application thereof in treatment of deuterium-containing wastewater and tritium-containing wastewater, and belongs to the field of chemical industry. The application is based on metal organic framework materials (MOFs), excellent MOF materials are synthesized by selection of metal centers and organic ligands, and the MOF materials are applied to the treatment process of deuterium-containing wastewater and tritium-containing wastewater in a granulation mode; meanwhile, due to the unique crystal properties of the MOF materials, the MOF materials are endowed with unique separation properties, and the theoretical plate number can be effectively improved. The application introduces the metal organic framework materials into the field of tritium-containing wastewater rectification, thereby expanding the material types in the field, and providing a brand-new vision and method for research and development of a new tritium-containing wastewater filler.

The present application relates to a kind of for aromatic hydrocarbon combined plant adsorption separation unit extract partition wall rectification system, including partition wall rectification tower, toluene separation flow path, p-xylene separation flow path and p-diethylbenzene separation flow path;Partition wall rectification tower includes the partition wall being arranged in tower interior, one end of partition wall is fixed in tower bottom, the other end of partition wall extends upwards and is kept a certain distance from tower top, and partition wall separates the space in tower interior into first separation chamber and second separation chamber being arranged left and right, and common rectification chamber being located above partition wall, first separation chamber, second separation chamber and common rectification chamber are in fluid communication;Toluene separation flow path is connected with the top of common rectification chamber;P-diethylbenzene separation flow path is connected with the bottom of first separation chamber;P-xylene separation flow path is connected with the bottom of second separation chamber.Compared with double-tower rectification process, investment is greatly reduced, tower top gas cooling load is less, system waste heat is fully recycled, energy consumption and cost are reduced, and economic benefit is generated.

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 present application relates to wastewater distillation technical field, especially to a kind of chemical raw material intermediate wastewater distillation equipment and distillation method thereof.It includes primary distillation unit and condensing unit, the bottom of the primary distillation unit is connected with secondary distillation unit, the primary distillation unit includes distillation ball of spherical structure, first rotating rod is rotatably connected in the distillation ball, the periphery of the first rotating rod is annular array distribution with several groups of first scraping mechanism;The secondary distillation unit includes distillation kettle with hemispherical structure at bottom.The present application carries out secondary distillation in the form of hierarchical intensity, not only save energy consumption, but also improve distillation effect and harmful substance separation effect.At the same time, distillation ball and distillation kettle are respectively set as spherical and hemispherical, reduce bottom area, reduce precipitation probability, and use first scraping mechanism and second scraping mechanism to respectively stir and scrape wall of the inner wall of both, also reduce the residue of waste residue.

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 invention provides a production method for recovering glacial acetic acid through negative pressure distillation, and belongs to the technical field of glacial acetic acid recovery. The method comprises the following steps of: preheating dilute acetic acid obtained by a reaction in a previous working section in a preheater, feeding the preheated dilute acetic acid into a concentration tower, injecting butyl acetate into the concentration tower, concentrating, feeding the concentrated acetic acid into a distillation tower, distilling, feeding a distilled gas phase into a condenser through heat exchange, and condensing to obtain liquid acetic acid, and transferring into a receiving tank to obtain crude acetic acid. By changing the positive pressure of the distillation system into the negative pressure for production, online switching and distillation online cleaning are realized, the distillation effect of the distillation tower is improved, the steam consumption is reduced, the resistance of the concentration system is reduced, the acid content in wastewater is reduced, the wastewater amount of system cleaning is reduced, the operation period of the concentration tower is prolonged, and the production cost is reduced. Therefore, the effects of saving energy, reducing emission and reducing consumption are achieved.

This utility model relates to the field of evaporation equipment technology, specifically to an evaporation device for the distillation process of R-(+)tetrahydrofuran carboxylic acid. The device includes an inner wall of an evaporation sleeve, an evaporation sleeve jacket, a discharge assembly, an upper end cap, a stirring shaft, a stirring shaft mounting assembly, a stirring blade assembly, a feed pipe, a feed sleeve flange, a dispersion disc, a discharge pipe, a thermometer sleeve, a sight glass, a condenser assembly, and a receiving vessel assembly. The feed pipe controls the amount of material entering the distillation device via a valve. After the material is fed into the inner wall of the evaporation sleeve, it is evenly dispersed by the dispersion disc. Utilizing the motor, stirring shaft, and stirring blade assembly, the material forms a film on the inner wall of the evaporation sleeve during the stirring process. The rapidly vaporized material is condensed in the condenser and then received in the receiving vessel, thus improving the distillation effect and preventing localized overheating of the material, which could lead to quality problems.

This invention provides a distillation system for degassing carboxylated styrene-butadiene latex, comprising a polymerization kettle, a distillation column, a condenser, a buffer tank, a mixed-phase feed pump, a conditioning tank, and a vibrating screen. The outlet of the polymerization kettle is connected to the inlet on the side wall of the distillation column. The vapor phase outlet of the distillation column is sequentially connected to the inlet of the polymerization kettle via the condenser, the buffer tank, and the mixed-phase feed pump. The liquid phase outlet of the distillation column is connected to the inlet of the conditioning tank, and the outlet of the conditioning tank is connected to the inlet of the vibrating screen. A fractionation device is provided in the distillation column, comprising several trays. Each tray has multiple valve tubes evenly distributed through it, and each valve tube contains a Tesla valve. A sliding float valve structure is provided at the top of each valve tube. This high-efficiency distillation system can effectively disperse the vapor phase during distillation, allowing for more thorough countercurrent contact between the vapor and liquid phases and more complete interphase mass transfer, thereby further improving the distillation effect and efficiency while reducing energy consumption.

This invention discloses a catalytic light gasoline etherification device, relating to the field of petrochemical technology. It includes a reaction shell with a cover plate at the top. A light gasoline storage tank is fixedly connected to the bottom of the cover plate. Multiple primary reaction components are also fixedly connected to the cover plate. A gasoline feed pipe is connected through the cover plate. Multiple conduits are fixedly connected to the outer wall of the light gasoline storage tank, with one end of each conduit connected to the light gasoline storage tank and the other end connected to the primary reaction components. A valve assembly is also provided on the cover plate for opening and closing the end of the conduit near the light gasoline storage tank. Methanol is contained within the primary reaction components. This invention combines etherification, distillation, and extraction into a single process, reducing equipment size. The overall miniaturization of the equipment facilitates experimental research. Furthermore, the etherification mixture is mixed in multiple chambers, reducing mixing time and improving production efficiency.