107results about "Liquid distribution in distillation" patented technology

A process for distilling a raffinate 2 stream as feed stream in at least two distillation columns DK1 and DK2 has two different inlets for the feed stream in at least the distillation column DK1. It is a feature of the process that the feed stream is analysed for its composition before being introduced; and one of the at least two inlets for the feeding of the feed stream is chosen depending on the composition of the feed stream.

The invention relates to the field of molecular distillation, in particular to distillation equipment for preparing high-quality silicone oil, which comprises a frame body, a distillation cylinder arranged in the middle of the frame body, a top cover arranged at the top of the distillation cylinder, a plurality of feed ports formed in the bottom of the top cover, a heating surface arranged outside the distillation cylinder, a condenser arranged inside the distillation cylinder, and a vacuum interface formed in the right lower part of the distillation cylinder, a distillate outlet is formed in the lower right portion of the distillation cylinder, a feeding port is formed in the right portion of the top cover, a film scraping frame is rotationally connected into the distillation cylinder and slidably connected with film scraping plates, the upper portion of the film scraping frame penetrates out of the top cover, the film scraping plates are symmetrically arranged on the film scraping frame, and gaps exist between the film scraping plates and the inner wall of the distillation cylinder. Through cooperation of the film scraping frame, the film scraping plate, the first servo motor, the connecting rod, the adjusting frame and other components, a liquid film formed on the inner wall of the distillation cylinder can be more uniform, and meanwhile, the thickness of the formed liquid film can be adjusted according to materials with different viscosities, so that the downward flowing speed of the liquid film tends to be consistent, and the optimal distillation effect is achieved.

The invention discloses flash tank equipment which comprises a flash tank, a feeding pipe, an exhaust pipe, a conical first heating flow guide body, a first oil way, an annular second heating flow guide body and a second oil way. And a tank wall convex part is arranged on the inner surface of the tank wall of the flash tank. A first oil cavity is formed in the first heating flow guide body, the first heating flow guide body is suspended below the spraying head at the lower end of the feeding pipe and is positioned above the convex part of the tank wall, and the first oil way is connected with the first heating flow guide body and is communicated with the first oil cavity. A second oil cavity is formed in the second heating flow guide body, the second heating flow guide body is arranged below the tip of the convex part of the tank wall, and the second oil way is connected with the second heating flow guide body and communicated with the second oil cavity, so that the heat transfer mode is improved, the heat transfer area and the heat transfer intensity are effectively increased, and the retention time of fluid materials is prolonged; the temperature of the lower half part of the flash tank is increased, so that the flash efficiency is improved, and the quality and the performance of polymer products are ensured.

The invention relates to the technical field of NMP (N-Methyl Pyrrolidone) recovery and refining, and discloses an NMP recovery liquid purification process for lithium battery production, which comprises the following steps: conveying an NMP recovery liquid to a primary rectifying tower to remove light components in the NMP recovery liquid to obtain an NMP material, then conveying the NMP material to a secondary rectifying tower to separate NMP from trace light components and heavy components, and then conveying the tower top gas (containing NMP and trace light components) of the secondary rectifying tower to a purifying tower so as to purify the NMP, condensing the gas output from the top of the purifying tower, refluxing the condensed gas into the purifying tower to serve as reflux liquid so as to ensure the normal work of the purifying tower, and refluxing one part of the tower bottom material of the purifying tower into the secondary rectifying tower so as to ensure the normal work of the purifying tower. The other part of the tower bottom material of the purification tower is output as a finished product, and a high-purity NMP product is obtained; the NMP product obtained by refining is high in recovery purity and relatively low in energy consumption and equipment cost.

The invention relates to a process for operating a mass transfer column comprising internals and at least one liquid distributor (1) for distributing a multi-phase liquid, wherein the liquid distributor (1) comprises a trough (9) for collecting the multi-phase liquid to be distributed onto internals in the mass transfer column, the trough (9) having a bottom (19) and side walls (7), wherein openings (17) for distributing the multi-phase liquid are formed in the trough (9) and / or in drip tubes (15) extending through the bottom (19) into the trough (9), wherein the openings (17) are arranged in at least three different heights. In the process, different phases of the multi-phase liquid separate into different layers in the trough, and the phases flow through openings at different heights, respectively.

The present invention provides a wet scrubber for gas abatement comprising a cleaning vessel defining a chamber, a gas inlet for supplying a gas to be scrubbed and a gas outlet for allowing the exit of the scrubbed gas, the gas inlet and the gas outlet being in fluid communication with each other, and one or more cleaning fluid supply ports, the wet scrubber comprising at least one distribution element connected to the cleaning fluid supply port for distributing the cleaning fluid inside the chamber, the at least one distribution element being a distribution plate comprising a cavity and a plurality of openings arranged to allow the cleaning fluid to flow from the cavity.

The present disclosure relates to a Rotating packed bed (RPB) (101) wherein the rotor assembly (106) is supported on a roller assembly (100) for improved mechanical integrity and low vibrations and a method (200) thereof. The roller assembly (100) includes at least three rollers (102) distributes a load that is disposed in a rotating shaft (103) of the rotor assembly (106). The at least three rollers (102) are adapted to configure in a pre-determined configuration i.e. in triangular pitch. The outer layer (104) is disposed an exterior surface (104-1) of each of the at least three rollers (102) respectively. Further, the rotating shaft (103) is positioned at the center of the first (102-1), the second (102-2), and the third (102-3) rollers, such that the rotating shaft (103) comes in contact with the outer layer (104) of the three rollers (102-1), (102-2), (102-3) thereby provide support to RPB (101).

Proposed are a device and a method based thereon for continuously purifying high-boiling thermolabile compounds of more highly volatile impurities by the selective continuous distillation of a medium fed into the device. The device is a column apparatus comprising at least three sections arranged successively one above another: a mass exchange section, an evaporation section and a cooling section, wherein the evaporation section is a vertically oriented falling film evaporator with a fixed residence time for thermolabile mixtures in the evaporation zone. In a specific embodiment, examples of high-boiling thermolabile media are mixtures of aromatic polyamines, for example mixtures of methylene diphenyl diamine (MDA) and higher homologues thereof, as well as mixtures of aromatic polyisocyanates, for example mixtures of methylene diphenyl diisocyanate (MDI) and higher homologues thereof. The method based on the device makes it possible to obtain the above-mentioned media in a purified form in which the residual content of more volatile solvents such as, for example, aniline or chlorinated benzene is not more than a few dozen ppm and the residence time of the medium undergoing evaporation in the evaporator region is not more than 100 seconds, which does not cause significant changes in the colour value of a thermolabile medium.

The invention discloses a rectifying tower and a process for producing ultra-pure arsine, and relates to the technical field of rectification processing, the rectifying tower comprises a rectifying assembly and a homogenizing assembly, the rectifying assembly comprises a tower body, a filler part is fixed in the tower body, an air inlet valve is fixed at the bottom of an outer ring of the tower body, and a liquid inlet valve is fixed at the top of the outer ring of the tower body; the homogenizing assembly is arranged in the tower body and comprises a liquid distribution part mounted in the tower body and a fixing frame fixed in the tower body, a drainage shell is embedded in the fixing frame, a vertical rod slides on the fixing frame, and a collecting frame is arranged at the top of the fixing frame. According to the present invention, with the arrangement of the homogenizing assembly, the flow dividing operation can be performed according to the falling amount of the liquid phase when the liquid phase is increased so as to improve the uniform distribution treatment efficiency, change the space of the gas phase distribution point, avoid the flooding phenomenon, make the liquid phase and the gas phase achieve the good countercurrent contact between the filler, and ensure the overall rectification treatment efficiency.

To provide an improvement method that can accommodate even fluctuations in component ratios in raffinate second stream in a method for distilling raffinate second stream as a supply flow in at least two distillation towers.SOLUTION: Provided is a method for distilling raffinate second stream as a supply flow in at least two distillation towers DK1, DK2, in which there are at least two different inlets for the supply flow in at least the distillation tower DK1. Before introduction of the supply flow, composition thereof is analyzed, and one of at least two inlets for supply of the supply flow is selected according to the composition of the supply flow.SELECTED DRAWING: None

A process for the preparation of an alkylene glycol from an alkene comprising steps of: a) supplying a gas composition to an alkylene oxide absorber through a gas inlet, the absorber comprising an absorption section and a sump, and allowing the gas composition to pass upwards; b) supplying a lean absorbent to the top of the absorption section and allowing the lean absorbent to pass downwards; c) intimately contacting the gas composition with lean absorbent in the absorption section in the presence of one or more catalysts that promote carboxylation and hydrolysis; and d) withdrawing fat absorbent from the absorption section and passing the fat absorbent and any liquid condensate through the sump, wherein the sump comprises one or more baffles that define a flow pathway from a sump inlet to a sump outlet between the one or more baffles.

The invention discloses a reactive distillation tower and maintenance equipment thereof, and belongs to the technical field of reactive distillation equipment. The device comprises a tower body, a flow dividing assembly is arranged on one side of the tower body and in the middle of the tower body, the flow dividing assembly comprises a flow dividing pipe, the bottom of the flow dividing pipe is fixedly connected with a flow dividing disc, the middle of the bottom of the flow dividing disc is fixedly connected with a lower flow dividing spray head, and the edge of the bottom of the flow dividing disc is fixedly connected with a plurality of side flow dividing spray heads. The side shunting nozzles are obliquely arranged towards the middle part of the shunting plate; according to the reactive distillation tower disclosed by the invention, the side shunting nozzles positioned on the outer side edges of the shunting assemblies are obliquely arranged towards the inner side, so that liquid flow sprayed by the side shunting nozzles can mutually impact liquid flow sprayed by the lower shunting nozzles in the side shunting nozzles, and the liquid flow cannot directly impact the inner wall of the tower body; therefore, the erosion loss speed of the anti-corrosion coating on the inner wall of the tower body is reduced, the service life of the reactive distillation tower is effectively prolonged, and the maintenance frequency is reduced.

The invention relates to the technical field of isooctane purification, in particular to a purification system and purification process of high-purity isooctane, which comprises a tower body and a conveying module arranged on the tower body and used for introducing gas and liquid, cleaning boxes are arranged on two sides of the tower body, a filler layer is arranged in the tower body, and the purification system further comprises a placing module, the Pall rings are vertically arranged on the upper side and the lower side of the packing frame, the Pall rings are arranged on the upper side and the lower side of the packing frame, the Pall rings are arranged on the first bearing steel wire and the first separating steel wire, and the second bearing steel wire is arranged in the middle of the packing layer. The Pall rings are arranged, the passing pressure of gas and liquid can be reduced, the light component removal effect is improved, the Pall rings are arranged and can move upwards when the packing is blocked and subjected to the action of air pressure, discovery time is provided for use, and the packing is prevented from being damaged due to direct mutual extrusion.

The embodiments described in this specification relate to systems, devices, and methods for capturing CO2 from ambient air. In some aspects, the device may include a platform having a top and a bottom, a lifting mechanism configured to move the platform vertically, a plurality of orifices defined by the top of the platform and configured to discharge a liquid onto a tray, and an actuator configured to move laterally along the bottom side of the top of the platform and configured to push and move the tray laterally. In some embodiments, the bottom may support the tray as the tray moves laterally. In some embodiments, the lifting mechanism may include at least one of a chain or a linear actuator driven by a motor.

The invention discloses a spraying structure for a devolatilization device, which comprises an outer pipe, a conveying pipe and a nozzle, the outer pipe is tightly connected with an input pipe of circulating hot water through an auxiliary pipe, and is used for receiving the supply of hot water; one end of the conveying pipe is firmly connected to the outer pipe, the other end of the conveying pipe extends into the kettle body and is tightly connected with the spray head, and a spraying opening of the spray head is arranged downwards; the outer pipes and the sprayers are arranged in two sets, each set of outer pipes is provided with one set of sprayers correspondingly connected with the outer pipes, and the upper set of sprayers and the lower set of sprayers are arranged in a staggered mode in the spatial layout.

The present invention provides a wet scrubber for gas abatement, comprising a scrubbing vessel defining a chamber, a gas inlet for supplying a gas to be scrubbed, and a gas outlet for allowing the egress of a scrubbed gas; the inlet and outlet being in fluid communication with one another; one or more scrubbing fluid supply ports; the wet scrubber comprising at least one distribution element connected to a scrubbing fluid supply port for distributing a scrubbing fluid inside the chamber; wherein at least one said distribution element is a distribution plate comprising a cavity and a plurality of apertures arranged to allow scrubbing fluid to flow from the cavity

The present disclosure relates to a reactive monomer separation device, and more particularly, to a reactive monomer separation device in which a feed supply unit is structurally designed such that feed can be uniformly distributed within a tower, thereby improving tower efficiency.

The invention discloses a quenching discharge flash tower device, which belongs to the technical field of chemical production equipment and comprises a quenching discharge flash tower, one side of the quenching discharge flash tower is connected with a feeding pipeline, the other side of the quenching discharge flash tower is connected with a reflux water pipeline, and the reflux water pipeline is connected with a flow control valve and a flow indication controller. The liquid level transmitter is electrically connected with the liquid level meter indication controller, the bottom of the quench discharge flash tower reboiler is connected with a quench discharge flash tower kettle pump through a pipeline, the pipeline is connected with a gate valve a, a pressure meter a, a gate valve b and a liquid level control valve, and the liquid level indication controller is electrically connected with the liquid level control valve. The waste ethylene glycol can be prevented from being directly discharged in a flash evaporation mode to pollute the atmosphere, preheating of purified vapor-state water can be recycled for a follow-up process, energy consumption treatment of a compressor is not needed, the use cost is greatly saved, industrial waste heat can be efficiently utilized for efficiently preparing cold energy, the purposes of energy conservation, emission reduction and efficiency improvement are achieved, and the method is suitable for industrial production. The social benefit and the economic benefit are obvious.

The present invention relates to a liquid collector and gas distributor system for a separation device, such as for a mass transfer column, in particular for a packing column for distillation or absorption, wherein the liquid collector and gas distributor system comprises at least two layers of liquid collection channels, wherein the at least two layers of liquid collection channels are arranged one above the other and each layer of liquid collection channels comprises at least three liquid collection channels being arranged adjacent to each other, but spaced apart thus forming a gap between each two adjacent liquid collection channels of a layer, wherein, seen in top view, at least 60% of the area of the liquid collector and gas distributor system is covered by the liquid collection channels, and wherein, seen in top view, the ratio of the portion of the area of a layer of liquid collection channels being covered by the liquid collection channels divided by the total area of the layer of liquid collection channels is different to the, seen in top view, ratio of the portion of the area of at least one other layer of liquid collection channels being covered by the liquid collection channels divided by the total area of the layer of liquid collection channels.

A gravity liquid distributor (1) comprises: a lower plate (P) provided with orifices through which a liquid leaves the distributor to irrigate a lower element, parallel parallelepiped chimneys (C) dedicated to the passage of the ascending gas, thus delimiting liquid chutes above the lower plate, these chimneys being provided with closure means on the upper part allowing both to deflect the liquid, the chimneys are distributed over an entire central part with a circular section of the lower plate, releasing a peripheral channel on the perimeter of the lower plate fluidly connected to the chutes, a plurality of plates (R1, R2) capable of guiding the liquid collected above the chutes towards the peripheral channel, each plate having an elongated rectangular shape with two ends, with a single plate per chute,the platelet being sealed at one end only such that at least the majority of the collected fluid flows to the peripheral channel, the platelets are oriented at an acute or zero angle to the horizontal. Abstract Figure: Figure 4,

The invention relates to a method for purifying ethylene carbonate from a crude ethylene carbonate composition, comprising the following steps: a) subjecting a crude composition comprising ethylene carbonate to at least one distillation step to obtain a pre-purified composition comprising at least 99.5% by weight of ethylene carbonate, and b) subjecting the pre-purified composition obtained in step a) to at least one melt crystallization step to obtain a purified ethylene carbonate composition wherein in step a) a bottom divided wall distillation column is used as a distillation column (if step a) comprises one distillation step) or as a first distillation column (if step a) comprises two or more distillation steps), and a bottom partition distillation column comprising a partition wall connected to the bottom of the bottom partition distillation column and extending upward from the bottom of the bottom partition distillation column by a portion of the height of the bottom partition distillation column, whereby a bottom section of the divided wall distillation column is subdivided into a first bottom sub-section and a second bottom sub-section as viewed from a cross-section of the divided wall distillation column.

The present invention relates to a process for purifying ethylene carbonate from a crude ethylene carbonate composition, said process comprising the steps of: a) subjecting a crude composition comprising ethylene carbonate to at least one distillation step to obtain a pre-purified composition comprising at least 99.5% by weight of ethylene carbonate; and b) subjecting the pre-purified composition obtained in step a) to at least one melt crystallization step to obtain a purified ethylene carbonate composition wherein the process is carried out in a plant comprising at least one distillation column, one vessel, at least one crystallizer and a feed line for a crude composition containing ethylene carbonate, wherein, if the apparatus comprises one distillation column, the distillation column, or, if the apparatus comprises two or more distillation columns, the first distillation column, comprising a top outlet line, a bottom outlet line and a side outlet line, wherein the at least one crystallizer comprises an inlet line for the pre-purification of the composition and an outlet line for the purification of the ethylene carbonate composition, and wherein the side outlet line of the distillation column is directly or indirectly connected to the inlet line of the at least one crystallizer for the pre-purification of the composition, wherein i) or the vessel is connected to the feed line for the crude composition containing ethylene carbonate and to an inlet line, where the inlet line is connected to a gas outlet of a first reboiler, where the first reboiler is further connected to a bottom outlet line of the distillation column, where the vessel further comprises an outlet line, where the outlet line is connected to a gas outlet of a second reboiler, where the first reboiler is further connected to a bottom outlet line of the distillation column. The outlet line leads to the inlet line of the distillation column via a second reboiler, in which a bottom fraction of the distillation column withdrawn from the distillation column via the bottom outlet line is partially evaporated in the first reboiler to obtain a gas fraction and a liquid fraction, or ii) the feed line for the crude composition containing ethylene carbonate is introduced into the distillation column, where the bottom outlet line of the distillation column leads to the vessel via a first reboiler, where the vessel comprises a gas outlet connected to the inlet line of the distillation column, where the bottom outlet line of the distillation column leads to the vessel via a second reboiler, where the gas outlet is connected to the inlet line of the distillation column. And the container comprises a liquid outlet which is connected with a pipeline leading into a second reboiler, the second reboiler comprises a gas outlet which is connected with an inlet pipeline of the distillation column, and the gas outlet is connected with a gas outlet of the distillation column. Wherein a bottom fraction of the distillation column withdrawn from the distillation column via the bottom outlet line is partially evaporated in the first reboiler, and wherein at least a portion of a gas fraction obtained in the first reboiler is recycled to the distillation column via the inlet line.

A scrubber (1) for cleaning of a gas comprises a casing (3) extending along a longitudinal central axis (x) and enclosing a scrubbing chamber (4). The casing has a gas inlet (5) and a gas outlet. The casing is configured to permit a gas flow of the gas to flow through the scrubbing chamber in a flow direction (F) from the gas inlet to the gas outlet. A deflector device (12) is provided in the scrubbing chamber between the gas inlet and the gas outlet and forms a gas passage (28) between the deflector device (12) and the casing (3). The deflector device comprises an upstream surface (16) facing the gas inlet. A spraying nozzle (8) is configured to spray a scrubbing liquid into the scrubbing chamber and the gas flow. A separation device (40) comprises a shield element (41) and is arranged between the upstream surface of the deflector device and the gas inlet. The shield element shields the upstream surface from the gas flow and is perforated by a plurality of holes.

The present invention provides a multi-component mixture separation system, which includes: a distillation column including a first part and a second part separated by a dividing wall; and a phase separator that receives the lower discharge stream of the second part, separates the stream into an aqueous phase and an oil phase, and returns a part of the separated aqueous phase or oil phase to the first part. Wherein, the first part includes a gas-lifting tray arranged at the upper part, and a feed stream containing more than three components is fed to the first part to separate high-boiling components to the lower part and allow gaseous components to move to the second part.

A propylene oxide separation system comprising a heavies distillation column configured to receive a crude propylene oxide stream and discharge a heavies purge bottoms comprising at least one impurity selected from acetone, methanol, aldehydes, aldehyde derivatives, water, heavy hydrocarbons comprising C5+, or combinations thereof, and discharge a heavies distillation column overhead stream comprising a majority of the propylene oxide entering with the crude propylene oxide stream, and a first extractive distillation column configured to receive the heavies distillation column overhead stream and a first extraction solvent stream comprising a hydrocarbon solvent, and discharge a lights purge overhead comprising at least one impurity selected from aldehydes (e.g., acetaldehyde, formaldehyde, etc.) methyl formate, methanol, water, C3 hydrocarbons, C4 hydrocarbons, or combinations thereof, and discharge a rich solvent bottoms stream comprising a majority of the propylene oxide entering via the heavies distillation column overhead stream. A propylene oxide purification method is also provided.

The invention provides a method and a device for continuously preparing PBST and a product thereof. The continuous production process of the PBST is realized by adopting the reaction rectifying tower and the tower reactor which are connected in parallel, the high-molecular-weight PBST product can be obtained by adopting the technical scheme, the reaction conversion rate is high, the equipment is simple, and the method is suitable for being applied to large-scale industrial production.

The present invention relates to a fluid or liquid dispenser and to a method for dispensing a fluid or liquid using a dispenser. The dispenser may be employed in an evaporation or condensation unit for treating a fluid. A fluid dispenser 200 comprises one or more sets of at least two channels 210 arranged in a plane orthogonal to an axis of the dispenser that extends substantially perpendicularly in use. Each channel is continuous and comprises a base (211) and two upright side walls (212, 213). The channels may include concentric rings. Each channel is spaced from an adjacent channel by an opening 230 through the dispenser. Fluid supplied to the channel can flow through one or both side walls and drop from the distributor. Each channel is connected to an adjacent channel by a bridge portion 220 configured to provide fluid communication between the channels and configured to distribute fluid to the channels. Notches 214 and protrusions 215 may be provided to enable optimization of droplet size and distribution.

The present invention relates to a method for purifying ethylene carbonate from a crude ethylene carbonate composition, and this method is a) A step of subjecting a crude composition containing ethylene carbonate to at least one distillation step to obtain a pre-purified composition containing at least 99.5% by weight of ethylene carbonate, b) A step of subjecting the pre-purified composition obtained in step a) to at least one melt crystallization step to obtain a purified ethylene carbonate composition. Includes, This method is carried out in a plant comprising at least one distillation column, one vessel, at least one crystallizer, and a supply line for a crude composition containing ethylene carbonate, wherein if the plant comprises one distillation column, the distillation column, or if the plant comprises two or more distillation columns, the first distillation column, comprises a top discharge line, a bottom discharge line, and a side discharge line, and at least one crystallizer comprises an inflow line for a pre-purified composition and a discharge line for the purified ethylene carbonate composition, and the side discharge line of the distillation column is directly or indirectly connected to the inflow line for the pre-purified composition of at least one crystallizer. i) The vessel is connected to a supply line and an inlet line for a crude composition containing ethylene carbonate, the inlet line being connected to the gas outlet of a first reboiler, the first reboiler being further connected to a bottom discharge line of a distillation column, the vessel further comprising a discharge line leading to the inlet line of the distillation column via a second reboiler, the bottom fraction of the distillation column being taken out of the distillation column via the bottom discharge line being partially evaporated in the first reboiler to obtain a gaseous fraction and a liquid fraction, or, ii) A feed line for the crude composition containing ethylene carbonate leads to a distillation column, the bottom discharge line of the distillation column leads to a vessel via a first reboiler, the vessel has a gas outlet connected to the inlet line of the distillation column, the vessel has a liquid outlet connected to a line leading to a second reboiler, the second reboiler has a gas outlet connected to the inlet line of the distillation column, the bottom fraction of the distillation column taken out of the distillation column via the bottom discharge line is partially evaporated in the first reboiler, and at least a portion of the gaseous fraction obtained in the first reboiler is recirculated into the distillation column via the inlet line.

The present application discloses a flash evaporation device and a method for selectively extracting and recovering lithium from ternary positive electrode powder. The flash evaporation device comprises a tank body, a liquid inlet unit and a pressure control unit, wherein a steam line is provided at a top end of the tank body, a liquid discharge outlet is provided at a bottom end of the tank body, one end of the liquid inlet unit extends into the tank body and is provided with a limiting plate, and a side surface of the liquid inlet unit is provided with an air inlet; the pressure control unit is mounted on an outer side of the end of the liquid inlet unit located within the tank body, the pressure control unit comprises a blocking member sleeved over the outside of the liquid inlet unit, a first resilient member is arranged below the blocking member, and a second resilient member is arranged above the blocking member, a bottom end of the blocking member abuts against the first resilient member, and a top end of the blocking member is rotatably connected to the second resilient member. The flash evaporation device and the method for selectively extracting and recovering lithium from ternary positive electrode powder have high flash evaporation efficiency, and can effectively increase the concentration of lithium in leaching solutions.

The invention relates to the technical field of chemical separation, in particular to an ethylene glycol-water energy-saving separation system based on liquid phase atomization spraying, and the system comprises a tower kettle liquid phase feed atomizer which is arranged at the upper part of a tower kettle and is used for atomizing filtered tower kettle liquid phase feed into micron-sized liquid drops; the multi-layer tower tray is arranged above the tower kettle liquid phase feeding atomizer, is used for carrying out vapor-liquid two-phase mass transfer and separation on the tower kettle reboiler, is arranged at the bottom of the tower kettle, and is used for heating tower kettle liquid and generating ethylene glycol-water mixed steam. Sensible heat and latent heat of esterified mixed steam are efficiently utilized through an atomization spraying technology, preheating and steam stripping are carried out on spraying liquid, the heat load of a tower kettle reboiler is greatly reduced, and a novel separation technology system is constructed. Actual measurement data shows that under the same productivity, compared with a traditional process, the system saves energy by about 41.4%, can save heat energy by about 860,000 kilocalories per hour, equivalently reduces carbon emission by about 319kg CO2 per hour, and reduces carbon emission by about 2679.6 TCO2 per year.