940results about "Evaporation" patented technology

The invention provides a polymer devolatilization process and a devolatilization system. The devolatilization process comprises the following steps: heating a polymer raw material containing volatile components to obtain a molten polymer, pressurizing the molten polymer, mixing with an entrainer, and feeding into a falling film device; after sudden pressure drop and heating, the entrainer carries volatile components to be separated from the system, and a devolatilization product is obtained; the mass ratio of the polymer raw material to the entrainer is (10: 1)-(10000: 1). According to the polymer devolatilization process provided by the invention, the entrainer with a low boiling point is introduced into a reaction system, a large number of microbubbles are formed through vaporization of the entrainer and azeotropy of volatile components, removal of the volatile components in the material is enhanced through pressure swing flash evaporation, and extremely low pressure does not need to be reached in a devolatilization device.

Systems and methods for crude oil desalting technology are provided. More specifically, systems and methods for the usage of waste heat from compression to treat high salinity water are provided. The systems and methods generate recycled water streams for desalter treatment. The systems and methods can treat high salinity waters from desalters and dehydrators. The high salinity streams are introduced to the compressed gas streams, where the waste heat causes the water portion of the water streams to evaporate, resulting in a fully or near-saturated gas stream and a concentrated waste water stream. The saturated gas streams are cooled and condensed, and low TDS water is separated from the gas stream in knockout drums. The low TDS water can be reintroduced to the desalting system as wash water, generating a circular water reuse.

Disclosed herein are systems and embodiments for improving energy efficiency of a chemical separations plant through heat integration. Heat integration may provide heating loops between distillation columns and / or integrated electric heating components configured to supply heat to reboilers in the chemical separations plant. Heat integration may use heat from an associated chemical synthesis plant configured to carry out an exothermic reaction (e.g., production of methanol from CO2 and H2). Such integrated process designs allow for the use of “low-grade” heat, thereby improving energy efficiency. Furthermore, such integrated process designs allow for electrification of exemplary chemical separations plants, replacing the use of steam as a heating medium with more energy efficient and carbon-emission neutral, electrical methods.

Embodiments presented provide for a multirotational counter rotating reactor. The reactor is configured to accept a fluid stream and separate the fluid stream into high quality liquid and gaseous phases through spinning of the sets of discs as well as through performing a heat transfer to the fluid stream.

Methods and systems for separating a first metal from a metal-containing feed stream are provided. The method can include applying solar energy, for example, by focusing one or more mirrors in one or more heliostats, to heat a metal-containing feed stream in a heating zone to a first temperature to produce a first vapor including the first metal. The first vapor can be condensed in a condensation zone to produce a first liquid including the first metal, and the first liquid can be collected. The system can include a separation unit include a heating zone in fluid communication with a condensation zone and a means for applying solar energy to heat a metal-containing feed stream disposed in the heating zone.

The invention relates to the technical field of nutrient element extraction, and discloses a step-by-step extraction method of organic selenium in natural selenium-rich agricultural products, which comprises the following steps: cleaning, drying and crushing the natural selenium-rich agricultural products into fine powder; then sequentially using an aqueous solution containing a buffer agent, low-concentration ethanol and a high-concentration organic solvent for ultrasonic-assisted extraction to respectively obtain water-soluble, hydrophilic, hydrophobic and fat-soluble organic selenium compounds; and finally, combining the extracting solutions in the steps, and carrying out rotary evaporation concentration and purification treatment to obtain the high-purity organic selenium compound. Through a step-by-step extraction method, different types of organic selenium compounds in natural selenium-rich agricultural products are efficiently extracted by using the aqueous solution, the low-concentration ethanol and the high-concentration organic solvent respectively under low-temperature and mild conditions, so that high purity and biological activity are kept, meanwhile, the process flow is simplified, and the production cost is reduced. The energy consumption and the use of organic solvents are reduced, the environmental pollution is reduced, and the method is suitable for large-scale industrial production.

The film distributor comprises a dispersion assembly and a heat exchange assembly, the heat exchange assembly is located below the dispersion assembly, and the dispersion assembly comprises a tank body, a feeding pipe, a connecting rod, a first dispersion plate, dispersion holes, a second dispersion plate, a flow guide rod, a conical head and a flow guide groove. By means of the structure, the first dispersion plate is arranged in the tank body, liquid entering the tank body can be dispersed, preliminary uniform distribution is formed, the liquid falls into the second dispersion plate from the first dispersion plate, fine through holes are formed in the second dispersion plate, and the surface of the second dispersion plate is coated with a nanoscale hydrophobic coating. The liquid can be stabilized above the second dispersion plate under the action of surface tension of the liquid, when the liquid is too heavy, the liquid falls downwards through the through holes, so that the liquid falls more uniformly, the liquid is quickly and uniformly guided downwards through the flow guide grooves in the lower flow guide rods, a water film is formed by the liquid and the inner wall of the heat exchange pipe, the film forming effect is improved, and the heat exchange efficiency is improved. And diversion speed and heat exchange efficiency are improved.

The utility model discloses a methanol hydrogen production device which comprises a steam vaporization tank, a cracking reaction tank and a cooler which are connected in sequence, the steam vaporization tank comprises an outer container and an inner container arranged in the middle of the outer container in a sleeved mode, the inner container is used for containing heating media, and a heating pipe is arranged in the inner container; a methanol containing cavity is defined between the inner container and the outer container; and a steam outlet pipe is arranged at the top of the side wall of the outer container. The steam vaporization tank is of a double-layer structure, heat conduction oil is arranged in an inner container and is half-filled, methanol gas is arranged on the upper portion between the inner container and the outer container, liquid is arranged on the lower portion between the inner container and the outer container and is uniformly vaporized into methanol steam, gas on the upper portion is overheated and enters the cracking reaction tank, the cracking reaction tank is provided with a plurality of steel pipes filled with catalysts, and the methanol steam is long in gas path and is uniformly cracked into mixed hydrogen under the action of the catalysts.

Various aspects of this disclosure relate to methods to lower the activation energy of the cannabinoid decarboxylation reaction by performing the decarboxylation reaction in the gas phase. In some specific embodiments, the method relates to the decarboxylation of a cannabinoid performed in a short-path distillation apparatus or a thin-film distillation apparatus.

Methods and systems for separating a first metal from a metal-containing feed stream are provided. The method can include applying solar energy, for example, by focusing one or more mirrors in one or more heliostats, to heat a metal-containing feed stream in a heating zone to a first temperature to produce a first vapor including the first metal. The first vapor can be condensed in a condensation zone to produce a first liquid including the first metal, and the first liquid can be collected. The system can include a separation unit include a heating zone in fluid communication with a condensation zone and a means for applying solar energy to heat a metal-containing feed stream disposed in the heating zone.

The invention relates to a preparation method of a low-chromium tetravalent vanadium electrolyte, in particular to the field of flow battery energy storage and vanadium product preparation, and the preparation method comprises the following steps: performing chromium complexing inerting treatment on an acidic tetravalent vanadium and trivalent chromium solution, and then performing extraction and reverse extraction to obtain the low-chromium tetravalent vanadium electrolyte; the molar ratio of the ligand used in the chromium complexing and inerting treatment to chromium in the solution is greater than 8: 1. According to the preparation method provided by the invention, the type and the concentration of the ligand in the solution are adjusted, so that the ligand is combined with chromium to form a water-soluble complex with high stability, the combination of chromium and the extraction agent is inhibited, and the extraction of vanadium is not influenced, so that the deep separation of vanadium and chromium and the short-process preparation of the low-chromium tetravalent vanadium electrolyte are realized through a one-step extraction method; the process of pre-precipitation chromium removal and vanadium precipitation refining is not carried out, the whole process is a liquid process, no solid process exists, the vanadium yield is high, and the content of chromium impurities in the vanadium electrolyte is smaller than 1 mg / L.

The utility model discloses an efficient film evaporation device for magnesium glycinate production, and relates to the field of magnesium glycinate production equipment.The device comprises a cylindrical evaporation chamber, at least four heating jackets which are arranged on the outer surface of the evaporation chamber in the axial direction and independently control the temperature in a partition mode, an integrated heating rotor assembly and a controller; a feeding hole and a concentrated solution outlet are respectively formed in the upper end and the lower end of the evaporation chamber, and a lining layer is compounded on the inner wall of the evaporation chamber; each independent heating jacket is provided with a PID (Proportion Integration Differentiation) temperature control module connected with the controller, so that the plurality of independent heating jackets form stepped heating distribution along the material flowing direction; the rotor assembly includes a spiral vortex disk. According to the film evaporator, stepped temperature rise is formed in the material flowing direction through the multi-partition independent temperature control heating jacket and the PID module, the problem that the axial temperature field of traditional equipment is not uniform is effectively solved, a magnesium glycinate solution saturation solubility curve is accurately matched, and crystal form transformation caused by local overheating is avoided.

The invention discloses a sialic acid molecular imprinting extraction method, and belongs to the technical field of separation and purification. The invention discloses a sialic acid molecular imprinting extraction method which comprises the following steps: dissolving a sialic acid standard substance and a functional monomer in a binary pore-foaming agent-ionic liquid, adding a cross-linking agent and an initiator, polymerizing under ultraviolet light to prepare a high-molecular polymer, and washing off the sialic acid standard substance to prepare a molecular imprinting polymer; specifically adsorbing sialic acid in the fermentation liquor by using the molecularly imprinted polymer; performing graded elution on sialic acid by using a methanol-water mixed solution and a methanol-acetic acid mixed solution; and performing rotary evaporation concentration, anti-solvent crystallization, separation and drying on the bird's nest acid eluent. Tests show that the sialic acid purity is greater than or equal to 99%, and can meet the requirements of the sialic acid in the fields of food, health care, medicine, cosmetics and the like. According to the method, sialic acid can be efficiently separated and extracted from sialic acid fermentation liquor, the product yield is increased, the extraction procedures are reduced, and the production cost and the discharge amount of three wastes are reduced.

The invention discloses a production device and process for cyclic purification and refinement of melamine, the production device comprises a dissolving tank, a press filter, an air cooling tower, a centrifugal machine, a drying machine, a separator, a mother liquor tank and a slag tank, the mother liquor output end of the centrifugal machine is connected with the input end of the mother liquor tank through a pipeline; the filter residue output end of the press filter is connected with the input end of the residue pool through a pipeline, the output end of the mother liquor pool is connected with the input end of the dissolving pool through a pipeline, the press filter is connected with a cooking system, and the cooking system is used for cooking a processing cavity in the press filter. According to the invention, the mother liquor circulating passage is arranged, the mother liquor generated by the centrifugal machine enters the mother liquor tank and is circulated into the dissolving tank through a pipeline, the cooking liquor recycling passage is arranged, the used press filter is cooked by using the cooking system, and the residue liquid formed by cooking is input into the residue tank and is input into the mother liquor tank, so that the cyclic purification of melamine is realized; the utilization rate and purification rate of raw materials are improved.

The invention belongs to a urea synthesis system using liquid carbon dioxide and a urea synthesis method. Comprising a urea synthesis tower, the urea synthesis tower is respectively connected with a liquid ammonia pipeline and a carbon dioxide gas pipeline, the carbon dioxide gas pipeline is connected with an outlet of a liquid-phase carbon dioxide delivery pump through a liquid-phase carbon dioxide vaporization unit, and an inlet of the liquid-phase carbon dioxide delivery pump is connected with a liquid-phase carbon dioxide delivery pipeline; liquid carbon dioxide is directly used as a raw material, a liquid-phase carbon dioxide delivery pump is used for pressurization, and gasification is carried out after pressurization, so that the liquid carbon dioxide meets the requirements of a urea synthesis tower, and the characteristics of saving urea synthesis energy consumption, reducing the use amount of circulating water and reducing the occupied area of equipment are achieved.

A device (1) for water treatment is specified, comprising a container (2) for receiving the water (9) to be treated, wherein - the container (2) is provided in places with a first coating (31), wherein the first coating (31) predominantly transmits radiation in the visible spectral range and predominantly reflects thermal radiation in the spectral range from 8 µm to 13 µm; and - the container (2) is provided in places with a second coating (32), wherein the second coating (32) predominantly reflects radiation in the visible spectral range and has an emissivity of at least 0.7 for thermal radiation in the spectral range from 8 µm to 13 µm. Furthermore, a process for water treatment is specified.

The invention provides a device for extracting cesium from lepidolite and preparing cesium formate by a preparation system of cesium formate, which comprises: an extraction section, which comprises a plurality of first high-speed centrifugal extractors connected in series, and a first extraction inlet of the first high-speed centrifugal extractor of the last stage is introduced with a liquid to be extracted; the to-be-extracted liquid is leached frozen clear liquid of lepidolite, and the frozen clear liquid is alkaline and comprises cesium, rubidium, sodium, potassium and lithium ions; the t-BAMBP is diluted by adopting ESCAID 110 as an extraction agent, the concentration of the extraction agent is 0.4-0.6 mol / L of t-BAMBP, and the O / A ratio in the extraction section is 1: (1.8-2.0); the washing section comprises a plurality of second high-speed centrifugal extractors which are connected in series; the back extraction section comprises a third high-speed centrifugal extractor, and cesium bicarbonate back extraction post-liquid flows out of a first back extraction outlet of the third high-speed centrifugal extractor; the oil removal section is used for removing oil from the cesium bicarbonate back-extraction post-liquid; and the evaporation and concentration section is used for introducing formic acid for neutralization reaction to form a cesium formate solution after oil removal, and then evaporating and concentrating the cesium formate solution to obtain the final cesium formate solution.

The utility model discloses a dimethyl sulfoxide recovery device which comprises a supporting frame, a barrel is fixedly connected to the interior of the supporting frame, a motor is fixedly connected to the upper surface of the barrel, a first bevel gear is fixedly connected to the output end of the motor, a second bevel gear is connected to the exterior of the first bevel gear in a meshed mode, and the second bevel gear is fixedly connected to the output end of the barrel. A connecting shaft is fixedly connected to the interior of the second bevel gear, a fixing disc is in threaded connection to the exterior of the connecting shaft, a stirring cutter and a heat conduction disc are fixedly connected to the exterior of the fixing disc, and the exterior of the heat conduction disc is movably connected with the barrel. By means of the structure, the fixing disc drives the stirring cutter and the heat conduction plate to move up and down, dissolution is accelerated through the stirring cutter while distilled water and part of impurities in dimethyl sulfoxide are dissolved, meanwhile, the interior of a solution can be evenly heated through movement of the heat conduction plate, and the solution evaporation efficiency is improved; and rapid impurity removal and recovery are facilitated.

The utility model discloses a low-temperature vacuum evaporation concentration system, which relates to the technical field of chemical equipment and comprises a treatment tank, a cleaning component is arranged in the treatment tank, and a lifting component is arranged at the top end of the cleaning component; the cleaning assembly comprises a top cover, a rotating pipe sleeve is rotationally installed at the top end of the top cover, the bottom end of the rotating pipe sleeve penetrates through the top end of the top cover, the outer surface wall of the rotating pipe sleeve is fixedly sleeved with a first gear, and two telescopic rods are fixedly installed at the bottom end of the first gear; the telescopic ends of the two telescopic rods are fixedly provided with a connecting ring, and the inner wall of the connecting ring is fixedly provided with a cleaning pipe. The cleaning assembly can make the cleaning pipe rotate, impact cleaning can be conducted on the inner wall of the treatment tank from different angles, the lifting assembly can make the cleaning pipe ascend and descend within a certain range, the inner walls, at different heights, of the treatment tank are cleaned, and the cleaning effect on the treatment tank is improved through mutual cooperation of the cleaning assembly and the lifting assembly.

The utility model relates to the technical field of caprolactam, and particularly provides a high-temperature ammoximation reaction heat utilization system, which comprises an ammoximation reaction kettle and an evaporation tower, a circulating pipeline and a circulating pump are arranged at the lower part of the reaction kettle, an evaporation tower reboiler is arranged in the evaporation tower, an outlet of the circulating pump is connected with an inlet of the evaporation tower reboiler, and the circulating pump is connected with the evaporation tower reboiler. An outlet of the evaporation tower reboiler is connected to a material return port of the ammoximation reaction kettle after passing through a condenser; a steam outlet is formed in the top of the evaporation tower and is connected to a gas pipeline. On the basis of heterogeneous ammoximation, the temperature of a reaction system is increased, high-pressure water vapor is directly generated by reaction heat, the water vapor is used for supplying heat to other sections of caprolactam, the use amount of ammoximation circulating water is reduced, the overall energy consumption of caprolactam is reduced, and the cost is reduced.

The invention discloses a production system and method for preparing high-carbon aldehyde through carbonyl synthesis of high-carbon olefin. The system comprises a reaction device, a separation device, an aldehyde condensing device, a product tank, a polymer supplementing unit and a recycling unit, the polymer supplementing unit is connected with the separating device; the cyclic utilization unit comprises an extraction separation device connected with a liquid phase outlet of the separation device, a polymer recovery device connected with a water phase outlet of the extraction separation device, and a catalyst regeneration device connected with an organic phase outlet of the extraction separation device. According to the method, a carbonyl metal catalytic system is adopted to catalyze reaction of high-carbon olefin and synthesis gas, and heating separation of reaction liquid is performed by introducing an organic polymer protection catalyst; the separated catalyst liquid phase is subjected to water extraction separation and post-treatment, and the organic polymer and the catalyst are recycled. Recycling of the catalyst and efficient separation of the product are realized, and the stability of the catalyst separation section is enhanced.

The invention belongs to the technical field of biomass energy conversion, and particularly relates to a coupling system based on biomass fermentation coupling pyrolysis gasification. Comprising a fermentation gasification device, an outlet of the fermentation gasification device is connected with a solid-liquid separation mechanism, a fermentation residue outlet of the solid-liquid separation mechanism is connected with a fermentation residue drying tank, a first chain plate conveyor is arranged below the fermentation residue drying tank, and the other end of the first chain plate conveyor is connected with a biomass mixing container; a fermentation liquor outlet of the solid-liquid separation mechanism is connected with a fermentation liquor storage tank through a pipeline, the fermentation liquor storage tank is connected with a reaction tank through a pipeline with a conveying pump, an outlet of the reaction tank is connected with a drying container through a second chain plate conveyor, and the drying container is communicated with a biomass mixing container. And an outlet of the biomass mixing container is connected with an inlet of the pyrolysis gasification device through a third chain plate conveyor. According to the invention, the utilization rate of biomass resources can be improved, and the maintenance workload of equipment is reduced, so that the reliability of the whole gasification system is improved.

The invention discloses DHA (docosahexaenoic acid) algal oil extraction equipment and an extraction method, and relates to the field of algal oil extraction processes. The rotary driving assembly drives the stirring assembly and the spiral lifting assembly to synchronously rotate in the extraction tank, and the stirring assembly can stir and mix a microalgae raw material and an extraction agent solution during rotation, so that the extraction agent solution is in full contact with the microalgae raw material, and DHA algal oil is extracted from the microalgae raw material; the spiral lifting assembly can continuously convey the microalgae raw material sinking and accumulating in the extraction tank upwards during rotation, so that the microalgae raw material sinks downwards again after being conveyed to the upper part in the extraction tank, and the microalgae raw material reciprocates in the extraction tank to be fully stirred and mixed with an extraction agent solution, so that the microalgae raw material is prevented from being settled and accumulated in the extraction tank; the mixing effect of the microalgae raw material and the extraction agent solution can be further improved, so that the DHA algae oil extraction effect is improved; and after extraction is completed, the inner wall of the extraction tank can be cleaned through the spiral lifting assembly rotating in the reverse direction.

The invention provides a method and a system for recycling polycrystalline silicon slag slurry. The recycling method of the polycrystalline silicon slag slurry comprises the following steps: carrying out aluminum removal treatment and titanium removal treatment on a high-boiling-point substance generated by slag slurry treatment to obtain an intermediate high-boiling-point substance; carrying out cracking reaction on the intermediate high-boiling residue and hydrogen chloride to obtain a cracking product and residual liquid; carrying out rectification treatment on the cracking product to obtain gas-phase chlorosilane and a low-boiling-point substance; carrying out concentration treatment on the residual liquid to obtain gas-phase chlorosilane and a concentrated product; and carrying out first hydrolysis treatment on the concentrated product to obtain hydrogen and waste liquid. According to the method for recovering the polycrystalline silicon slag slurry, the high-boiling residues in the polycrystalline silicon slag slurry can be efficiently recovered, and the resource utilization rate is increased.

The invention discloses a device and a method for intelligently regulating and controlling liquid-liquid continuous separation of plant extracts, and belongs to the field of plant extract separation. The device comprises a mixing and concentrating device, a gravity type liquid-liquid separator and a data processing unit; the mixing and concentrating device is provided with a mixer, a film evaporator and a first near-infrared spectrometer; the gravity type liquid-liquid separator is provided with a plurality of flowmeters and a second near-infrared spectrometer; the method comprises the following steps: constructing a concentrated solution prediction model, monitoring parameters such as spectral data, temperature, stirring speed, flow and the like of the concentrated solution in real time, analyzing data through a data processing unit, optimizing a separation process by adopting a fuzzy PID control algorithm, regulating parameters such as interface height, temperature, stirring speed and the like in real time, and realizing accurate control on separation efficiency and separation effect. According to the invention, precise monitoring and regulation of liquid-liquid continuous separation of the plant extract are realized, and the separation efficiency and the separation effect are improved.

The utility model discloses a sodium humate purifying device which comprises a hopper, a water inlet and a water outlet, the reaction assembly is assembled at the bottom of the hopper and is used for producing sodium humate; the precipitation assembly is assembled on one side of the reaction assembly and is used for precipitating the reacted solution; the acid water treatment assembly is assembled on one side of the precipitation assembly and is used for absorbing acid liquor; when the sodium humate purifying device is used, firstly, a sodium humate solution subjected to primary treatment is fed into the neutralizing tank through the connecting pipe, at the moment, the pH value of the solution is monitored in real time through the pH value detector, and if the pH value does not meet the requirement, the adding amount of the neutralizing solution in the input pipe is adjusted through the control valve; the sodium humate purifying and drying barrel is used for purifying sodium humate, the solution reaches a proper pH value, then the solution enters the heat preservation barrel through the conveying pipe, the electromagnetic heater is used for heating and drying the solution, the purified sodium humate is dried in the purifying and drying barrel, and finally the product is taken out through the discharging port.

The utility model discloses an esterification reaction dehydration device for producing an amino acid surfactant. The esterification reaction dehydration device comprises a reaction kettle, a steam pipe, a gas drying chamber, a condensation pipe and a liquid drying chamber with a siphon on the side surface, a steam outlet and a feed port are formed in the top of the reaction kettle, a discharge port is formed in the bottom of the reaction kettle, an inorganic salt dehydration device is fixedly arranged in the reaction kettle, and the steam outlet is connected with a gas inlet of the gas drying chamber through a steam pipe; a gas outlet of the gas drying chamber is connected with a valve interface of the liquid drying chamber; a condenser pipe is arranged at the top of the liquid drying chamber; the siphon inlet is connected with the bottom of the liquid drying chamber; an outlet of the siphon is connected with the reaction kettle; the inorganic salt dewatering device is a heat-resistant pipeline with one end blocked and small holes distributed in the periphery, and water-absorbing inorganic salt is placed in the pipeline after being packaged by a filter bag. The problems that in the prior art, a high-boiling-point toxic dehydrating agent is used, a water segregator is poor in water segregation effect, and the esterification rate is low are solved.

The invention provides a method for regulating and controlling dynamic kinetic resolution of spiral polycyclic aromatic hydrocarbon based on an inorganic chiral surface and application, and the method comprises the following steps: S1, rotating a substrate clockwise or anticlockwise, and depositing an inorganic material on the substrate by adopting a physical vapor deposition method to obtain an inorganic chiral nano material layer; wherein the contact angle between the inorganic material and N, N-dimethylformamide is less than 22 degrees, and the deposition angle and the normal direction of the substrate form an angle of 86 degrees or 0 degree; s2, dissolving spiral polycyclic aromatic hydrocarbon molecules needing to be split into N, N-dimethylformamide to obtain a solution; then dropwise adding to the surface of the inorganic chiral nano material layer to obtain a sample; and S3, annealing the sample at 40-50 DEG C, and obtaining the homochiral aggregate after the solvent is completely evaporated. The technical scheme provided by the invention is high in controllability, strong in universality and good in stability, and can be used for efficiently preparing chiral compounds with specific configurations.

The invention provides a concentration system for progesterone raw material production. The concentration system comprises a concentration tank, the upper end of the concentration tank is communicated with a feeding pipe and a primary exhaust pipe, the concentration tank is sleeved with a heating cavity, the lower end of the concentration tank is communicated with a liquid discharge pipe, and an electromagnetic valve is arranged on the liquid discharge pipe; the device further comprises a second-stage concentration shell, a horizontally-arranged concentration roller is rotationally connected into the second-stage concentration shell, a rotating motor used for driving the concentration roller to rotate is installed outside the second-stage concentration shell, a strip-shaped liquid dipping groove is formed in the position, on one side of the upper portion of the concentration roller, in the second-stage concentration shell, and the lower end of a liquid discharging pipe extends into the second-stage concentration shell. A material storage tank is arranged below the concentration roller in the second-stage concentration shell, a scraping strip matched with the concentration roller is arranged below the strip-shaped liquid dipping tank in the second-stage concentration shell, and the upper end of the second-stage concentration shell is communicated with a second-stage exhaust pipe. Through the design of the concentration roller, the surface area of a solution can be increased during concentration, so that a solvent is evaporated more quickly, and the concentration efficiency is effectively improved.

Seawater desalination or deionization of water by sunlight and the use of piping systems, characterized in that, in addition to the open pipe with forward-flowing liquid that becomes increasingly salty due to sunlight and evaporation, and the pipe for freshwater, a return piping system for water with a high salt content is present.