40results about "Liquid distribution in distillation" patented technology

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 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 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 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.

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.

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 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.

The present invention relates to a method for purifying ethylene carbonate from a crude ethylene carbonate composition comprising the steps of: a) subjecting a crude composition containing ethylene carbonate to at least one distillation step so as to obtain a pre-purified composition containing 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 so as to obtain a purified ethylene carbonate composition, wherein in step a) as the distillation column, if step a) comprises one distillation step, or as the first distillation column, if step a) comprises two or more distillation steps, a bottom dividing-wall distillation column is used, which comprises a dividing wall being connected with and extending from the bottom of the bottom dividing-wall distillation column upwards over a part of the height of the bottom dividing-wall distillation column thereby subdividing the bottom section of the dividing-wall distillation column, seen in cross-section of the dividing-wall distillation column, into a first bottom subsection and into a second bottom subsection.

The invention belongs to the technical field of butadiene, and particularly relates to a secondary extractive distillation internal C5 polymer online treatment mechanism which comprises a frame, a top tower, a middle tower, a bottom tower and a reboiler which are mounted on the frame, and an induction part, a cleaning part and a treatment part which are mounted in the frame, according to the online treatment mechanism for the C5 polymer in the second extractive distillation, the treatment component is arranged, a dispersing agent is injected into a feeding pipe of a middle tower, a treatment motor drives a rotating plate to rotate, a gear of the rotating plate is meshed with gears of stirring rods, and the rotating plate rotates to drive the multiple stirring rods to rotate synchronously, so that the dispersing agent in a treatment tank is mixed; a conveying tank is obliquely arranged on one side of the treatment tank and used for conveying a dispersing agent into the treatment tank, and a feeding port of a conveying pump sucks the mixed dispersing agent through a pipeline and conveys the dispersing agent into a filling pipe fixedly communicated with a discharging port of the conveying pump through a pipeline.

The present disclosure relates to a reactive monomer separation device, and more specifically, to a reactive monomer separation device in which a structure of a feed supply unit is designed so that feed can be uniformly distributed inside a column, thereby improving column efficiency.

The invention concerns a method for providing a high-purity n-butanol product stream from a crude n-butanol feed stream by fractional distillation in a dividing wall column (102) including an upper section (104), a middle section and a lower section (110), the middle section including an inflow section (106) and an offtake section (108) laterally separated from each other by a dividing wall (112) fixed in the column, the crude n-butanol feed stream being fed to the inflow section (106) and the high-purity n-butanol product stream being withdrawn from the offtake section (108), the liquid stream flowing out of the upper section (104) being collected and divided into a first liquid stream (114) and a second liquid stream (116), the first liquid stream (114) being fed to the upper region of the offtake section (108) and the second liquid stream (116) being fed to the upper region of the inflow section (106), wherein the split ratio between the mass flow rate of the first liquid stream (114) and the mass flow rate of the second liquid stream (116) is from 2:1 to 5:1.

The present invention relates to a devolatilization apparatus for devolatilizing a composition comprising a volatile component, such as for devolatilizing a solid or liquid polymer composition comprising unreacted monomer, solvent and / or by-product, wherein the devolatilization apparatus comprises an inlet for the composition to be devolatilized and at least two vessels being arranged in series to each other, each of which comprising at least one distributor, an outlet line for devolatilized composition and an outlet for gas, wherein at least one distributor of the first, most upstream of the at least two vessels comprises at its upstream end an inlet and at its downstream end an outlet, wherein at least one static mixer is arranged directly upstream of the inlet or downstream of the inlet but upstream of the outlet of the distributor, wherein the inlet for the composition to be devolatilized is connected with the at least one static mixer, and wherein the outlet line for devolatilized composition of the first, most upstream of the at least two vessels is connected with a recirculation line leading into the at least one static mixer, with which the inlet for the composition to be devolatilized is connected.

A reactive monomer separation device in which a structure of a feed supply unit is designed so that feed can be uniformly distributed inside a column, thereby improving column efficiency. The feed supply unit includes a circular feed transfer pipe provided along an inner wall of a cylindrical column; one or more inner pipes extending in a direction of a central axis from the circular feed transfer pipe; and a spray nozzle provided at each end of the one or more inner pipes, and a spray angle (θ) of the spray nozzle is ≤a maximum spray angle defined by the following equation:maximum⁢ spray⁢ angle=2×tan-1(l / h)Equation⁢ (1)where l is a length of the inner pipe, and h is a height from a lower dual flow tray of the stage equipped with the feed supply unit to the feed supply unit.

[Problem] To prevent or suppress generation of polymers in the internal space of a protrusion unit. [Solution] A handling device 100 includes a flow unit 10, a protrusion unit 30, a spray unit 40, and a grid 50. The spray unit is configured to be able to be disposed in an internal space 31 of the protrusion unit and be able to spray liquid onto the inner wall surface of the protrusion unit with the spray unit disposed in the internal space. The grid is disposed at the boundary of a flow path 11 of the flow unit and the internal space of the protrusion unit to prevent irregular packing F packed in a packed bed 17 from moving to the internal space.

An ethylene recycle method may include: obtaining an overheads stream comprising ethylene in a first gaseous state from an ethylene purification column; heating the overheads stream in a first heat exchanger to produce a heated overheads stream comprising the ethylene in a second gaseous state; compressing the heated overheads stream to yield a compressed ethylene stream comprising the ethylene in a first supercritical state; cooling the compressed ethylene stream to produce a cooled, compressed ethylene stream comprising the ethylene in a first liquid state, wherein the cooling comprises passing the compressed ethylene through the first heat exchanger; reducing the pressure of the cooled, compressed ethylene stream to produce a first recycle stream comprising the ethylene in a second liquid state and optionally a third gaseous state; and introducing the first recycle stream into the ethylene purification column.

The invention discloses a second-order eucalyptus oil fractionating tower, and relates to the technical field of plant essential oil separation equipment.The second-order eucalyptus oil fractionating tower comprises a tower body, a second-order fractionating mechanism, a feeding system, a temperature control system, a backflow system and a monitoring module.The second-order fractionating mechanism is arranged, so that low-boiling-point impurities can be removed through a first-stage fractionating unit in actual use, and the purity of the eucalyptus oil is improved; the limonene separation purity is improved by combining a stepped design with a special filler combination, and a double-loop reflux system dynamically adjusts the reflux ratio according to online monitoring data, so that the mass transfer efficiency is improved, the fractionation period can be shortened, the problem of efficiency fluctuation of traditional equipment is solved, and the separation efficiency of limonene is improved. By arranging the feeding system, the eucalyptus oil raw material firstly enters the pretreatment filter during use, the non-woven fabric base layer of the composite filter membrane intercepts large-particle impurities, the hydrophobic ceramic membrane removes trace moisture and colloid, and the condition that the mass transfer efficiency is reduced due to the fact that the impurities are attached to the surface of the fractionation filler is avoided.

The present invention relates to a devolatilization apparatus for devolatilizing a composition comprising a volatile component, such as for devolatilizing a solid or liquid polymer composition comprising unreacted monomer, solvent and / or by-product, wherein the devolatilization apparatus comprises a vessel comprising at least one inlet for the composition to be devolatilized, at least one outlet for devolatilized composition, at least one outlet for gas and at least one tray, wherein the at least one tray comprises a perforated bottom element, comprises at least one baffle being arranged on the perforated bottom element separating the perforated bottom element into at least one inner section comprising one or more openings and at least one outer section comprising one or more openings, and comprises at least one perforated roof element comprising one or more openings and being arranged above at least a part of the inner section of the perforated bottom element, wherein at least one weir is arranged at the outer edges of the perforated bottom element, wherein the inlet is located above the at least one perforated roof element, wherein the area of the projection plane of the at least one perforated roof element is 100 to 150% as the surface area of at least one inner section of the perforated bottom element, and wherein the openings of the at least one outer section of the perforated bottom element have a larger cross-sectional area than the openings of the at least one inner section of the perforated bottom element and than the openings of the at least one perforated roof element.

The present invention relates to the technical field of polyether polyol refining. Specifically disclosed is a method for continuously removing light components from polyether polyol. In the present invention, polyether polyol and deoxygenated water are mixed, and are then continuously added into a light component removal column and a dehydration column to remove light components and water from the polyether polyol by means of a process in which reduced-pressure flash evaporation, heating via bubbling, steam stripping and nitrogen stripping are combined, thereby obtaining purified polyether polyol. Compared with common stripping, the present invention has the advantages of an enhanced removal effect on light components, an effective reduction in the amount of steam and a lowered level of difficulty in controlling polyol quality control in a production stage; and the content of formaldehyde, acetaldehyde and propionaldehyde in the purified polyether polyol product obtained in the present invention can be as low as 10 ppm or less.

The present invention relates to a process for evaporating H2O, the process involving (i) providing a flash column; (ii) providing an H2O-containing stream, wherein the H2O-containing stream has a pressure in the range of 0.5 to 100 bara and a temperature which is in a range of 3 to 30 K higher than the vapor-liquid equilibrium temperature of H2O at the pressure in the flash column; (iii) introducing the H2O-containing stream into the flash column according to (i), wherein the flash column has a pressure in the range of 0.05 to 0.5 bara, to obtain a gaseous H2O-containing stream and a liquid H2O-containing stream. It has been found that, surprisingly, the process according to the invention makes it possible to efficiently evaporate H2O, which saves energy. This process can accordingly be employed wherever H2O-containing streams are produced and steam is required.

The invention discloses a polymer condensation kettle and application thereof. The polymer condensation kettle comprises a polymer solution feeding hole, a circulating hot water feeding hole, a steam feeding hole and a stirrer, the upper part of the condensation kettle is a gas phase space, and the circulating hot water feeding hole is formed in the gas phase space. According to the condensation kettle, circulating hot water is introduced from the gas phase space and can be in direct contact with the solvent gas phase, so that the circulating hot water exchanges heat with the solvent gas phase, the water amount carried by the solvent gas phase is reduced, the temperature of the solvent gas phase is reduced, the problem that the temperature of the solvent gas phase is high is solved, in addition, the amount of rubber powder carried by the gas phase is effectively reduced, and the production efficiency is improved. The steam and energy consumption can be obviously reduced, and the polymer loss is reduced.

The present invention relates to a defoliation apparatus for defoliating a composition containing volatile components, comprising an inlet for the composition to be defoliated and at least two containers arranged in series with respect to at least two containers, each of which comprises at least one distributor, an outlet line for the defoliated composition and an outlet for gas, wherein at least one distributor of the first most upstream of the at least two containers comprises an inlet at its upstream end and an outlet at its downstream end, wherein at least one static mixer is located directly upstream of the distributor inlet or downstream of the distributor inlet but upstream of the distributor outlet, the inlet for the composition to be defoliated is connected to the at least one static mixer, and the outlet line for the defoliated composition of the first most upstream of the at least two containers is connected to a recirculation line that leads to the at least one static mixer to which the inlet for the composition to be defoliated is connected.

A flow straightening device is provided for use in delivering a fluid stream into a vessel and includes a plurality of first tubes and a plurality of second tubes and optional third tubes that are arranged to create a matrix of parallel flow ducts that operate to reduce turbulence of the fluid stream when flowing through the flow straightening device. The first tubes are joined with the second tubes and third tubes by fasteners to facilitate assembly and / or installation from within the vessel.

The invention relates to the technical field of wastewater treatment, and discloses a chemical waste alkali liquor treatment device which comprises a separation assembly and a tower body, a liquid distributor is arranged in the tower body, and a liquid inlet pipe is connected to the liquid distributor; the cleaning assembly is arranged on the liquid distributor and comprises a cleaning part, the cleaning part comprises a supporting plate fixed to one side of the liquid distributor, a movable plate is arranged on the outer side of the supporting plate, a supporting frame is arranged at the bottom of the movable plate, a supporting rod is fixed to one side of the supporting frame, and a cleaning cylinder is arranged in the supporting rod. The liquid distributor has the beneficial effects that through the arrangement of the cleaning assembly, the spray holes of the liquid distributor can be regularly cleaned, all the spray holes can be ensured to normally discharge liquid, waste alkali liquid is uniformly distributed along a filler layer and completely covers the surface of filler, and a gas-liquid mass transfer interface is maximized, so that the steam stripping separation efficiency is stably maintained; and the problem of substandard treatment caused by blockage is avoided.

The invention discloses a porous baffling separation treatment process and device for waste mineral oil and tail oil, and belongs to the technical field of separation devices.The porous baffling separation treatment device comprises a tower body, the top of the tower body is communicated with a gas phase outlet, the middle-upper portion of the tower body is communicated with a liquid phase feeding port, the lower portion of the tower body is communicated with a gas phase inlet, and the bottom of the tower body is communicated with a liquid phase discharging port; the reaction tower is characterized in that a plurality of baffle plates are connected inside the tower body and are positioned between the liquid phase feed port and the gas phase inlet. According to the invention, a plurality of groups of baffle plates which are alternately arranged in a staggered manner are arranged in the tower body, the chord edge of the quasi-circular disc body is matched with the inner wall of the tower body to form a zigzag upward gas phase channel, and the gas rising hole and the flow guide hole which are exclusively formed in the disc body are matched, so that the circulation path of a gas phase in the tower can be obviously prolonged; the gas phase and the tail oil of the waste mineral oil form more sufficient countercurrent contact, meanwhile, gas-liquid two-phase split-flow circulation is achieved, flow interference is reduced, and gas-liquid mass transfer efficiency and separation uniformity can be improved.

The invention belongs to the technical field of distillation, and discloses negative pressure energy-saving distillation equipment which comprises a working frame, a square box is fixedly connected to the bottom of the inner wall of the working frame, bearing blocks are fixedly connected to the two sides of the square box, and a wine storage tank is fixedly connected to the bottom of the inner wall, close to the square box, of the working frame. Liquid is input into the distillation tower through a feeding butterfly valve pipe, an annular heating piece is driven and distills the liquid deposited on the top of an inverted cone bearing plate, meanwhile, in the process of starting a vacuum pump, valves of the feeding butterfly valve pipe and a first butterfly valve pipe are controlled, so that the interior of the distillation tower is in a sealed space, and the vacuum pump generates negative pressure; the gas flow in the distillation tower is extracted through the bent pipe, and the pressure in the distillation tower is reduced, so that the boiling point of liquid is reduced, and components in the liquid are separated at a relatively low temperature, thereby not only saving energy, but also protecting heat-sensitive substances and avoiding degradation or loss caused by high temperature.

The invention discloses a flash evaporator for discharging of a high-temperature and high-pressure reactor, and particularly relates to the technical field of flash evaporators.The flash evaporator comprises a flash evaporator tank body, an exhaust port is formed in the top of the flash evaporator tank body, a liquid outlet is formed in the bottom of the flash evaporator tank body, and a feeding pipe is fixedly connected to the outer surface of the flash evaporator tank body; the feeding pipe is used for being connected with a discharging port of a high-temperature and high-pressure reactor, a pressure reducing valve is arranged on the feeding pipe, one end of the feeding pipe extends into the flash evaporator tank body and is fixedly connected with a spray head, an impact cone is arranged above the spray head, and the impact cone is erected in the flash evaporator tank body; a spray head is arranged in the flash evaporator tank body, a liquid collecting cover is arranged below the spray head, the liquid collecting cover is also erected in the flash evaporator tank body, a spraying disc is rotationally connected in the liquid collecting cover, a centrifugal assembly is arranged on the spraying disc, and a power mechanism is arranged between the spraying disc and the flash evaporator tank body; the technical problem that flash evaporation is not thorough enough due to the fact that the flash evaporation path of flash evaporation high-temperature and high-pressure products is short is solved.