707results 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.

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 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 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.

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 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 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 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.

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.

An improved solar water distillation system which is effective for processing supersaturated brine commonly used in lithium mining comprising: a flushing system for controlling and substantially minimising cross-contamination of condensate stream(s) and salt deposits and / or treatment liquid, having a first flushing station integrated at a first location on a frame part of a solar still upstream from a treatment liquid separator, and including transfer means; wherein liquid from a liquid source is transferred to the first flushing station by the transfer means at a predetermined rate effective for dislodging and displacing solid salt deposits on the solar still.

An apparatus capable of heating a liquid may provide a valve assembly configured to receive an incoming liquid from a bulk source. The valve assembly may control the flow of the liquid to a source vessel via a pipe system. The pipe system includes a first pipe directly connected to the valve assembly and a second pipe downstream from the first pipe and connected between the first pipe and the source valve. The second pipe is heated with a heating system that surrounds the second pipe, and the second pipe has a larger diameter than that of the first pipe.

A piece of natural plant material is subjected to one or more chemical treatments to remove substantially all lignin therefrom, thereby allowing the extraction of delignified, cellulose-based fibers. For example, the natural plant material can be a grass, such as bamboo or gladiolus. Subsequent drying of the extracted fiber densifies the structure, yielding improved mechanical properties. In some embodiments, the extracted fibers can be used, either alone or in combination with other materials, as a structural material. For example, the extracted fibers can be embedded within, infiltrated with, coated by, or otherwise combined with a polymer or concrete to form a composite material.

A distillation method includes supplying a batch type distillation column with a liquid that is a process fluid; increasing pressure and temperature of a fluid, with a compressor and supplying the fluid to a reboiler; exchanging heat in the reboiler between the liquid, which has been supplied to the distillation column, and the fluid, which has been increased in pressure and temperature, to heat the liquid and acquire overhead vapor and to condense the fluid; delivering the overhead vapor to a condenser and condensing the overhead vapor into a condensate through heat exchange, removing the condensate; removing residual liquid from the distillation column; and regulating pressure of the distillation column to distill the liquid with heat generated by a heat pump operated over a narrower temperature rising range in the pressure-temperature increasing step.

A novel process for desulfurizing spodumene smelting slag using EDTA is presented. This process uses the final solid waste obtained from the water leaching lithium extraction process after sulfuric acid roasting of spodumene as raw material. A prepared EDTA solution is added to the smelting slag containing approximately 10% calcium sulfate, allowing the raw material to fully react with the EDTA solution, thus achieving desulfurization of the smelting slag. Finally, the filtrate is subjected to rotary evaporation precipitation, and the EDTA solution is recovered and recycled. This process has high resource utilization, not only achieving 99.9% desulfurization of the smelting slag in a short time but also enabling the recycling of the EDTA solution. The desulfurization method provided by this process is highly efficient, simple, and transforms waste into valuable resources, increasing economic benefits. Furthermore, it effectively addresses the environmental compatibility issues of solid waste in the existing lithium mining industry, which is of great significance for the sustainable and high-quality development of the lithium battery industry.

The application discloses a method for enriching polyphenols in rice bran by a multi-channel interception combined circulation adsorption, and comprises the following steps: (1) raw material pretreatment; (2) ultrasonic-assisted organic solvent crude extraction; (3) multi-channel interception combined circulation adsorption treatment; (4) solvent elution; and (5) vacuum concentration. The method takes rice bran as a raw material, enriches polyphenols in the rice bran by a multi-channel interception combined circulation adsorption, and optimizes enrichment conditions of the polyphenols, so that the prepared rice bran polyphenols have high total phenol content, total flavonoid content and in-vitro antioxidant activity, and the method has the advantages of simple operation, high extraction efficiency and reduced solvent consumption. The method can not only improve the utilization value of the rice bran, but also promote the upgrading of the rice industry and reduce waste.

The utility model relates to the technical field of deep processing of grease, in particular to a transesterification grease treatment device which comprises a separation device and a vacuum heating device, a funnel is arranged at a top inlet of the separation device and penetrates through the separation device, and the lower end of the funnel is suspended; a first outlet and a second outlet are formed in the side wall of the separation device, and the separation device is connected with a vacuum heating device through the first outlet; a heating structure, a third outlet and a fourth outlet are arranged in the vacuum heating device, and the third outlet and the fourth outlet are arranged on the side wall of the vacuum heating device. According to different conditions of the oil-water separation layer, the flowing-out position of the grease can be accurately adjusted, the oil-water separation accuracy is improved, meanwhile, impurities such as water and methyl alcohol in the grease are effectively removed, and the purity of the grease is remarkably improved.

The invention discloses a method for preparing large-particle sodium bicarbonate from sodium sulfate. The method comprises the following steps: pretreating raw materials; dynamically adjusting reaction conditions; establishing a raw material database; carrying out multistage continuous crystallization reaction; heat integration and waste heat recovery; the alkali medium is recycled; the temperature gradient design is simplified; double salt crystal separation and resource utilization, and bicarbonate radical concentration control; strengthening double salt separation by a membrane separation technology; and carrying out solid-liquid separation and product collection. In a sodium sulfate raw material dissolving stage, sodium carbonate or sodium bicarbonate is added to adjust the concentration of carbonate in a solution, so that the concentration is stabilized in a target range, ATR FT-IR is used for carrying out in-situ real-time quantitative analysis on carbonate ions in an aqueous solution, carbonate is automatically supplemented through feedback control, and the content of carbonate ions in the aqueous solution is determined. A plate heat exchanger is installed in a multi-stage reaction device, waste heat of previous-stage reaction liquid is utilized to preheat next-stage reaction liquid, and heat in mother liquor is recovered by adopting a vacuum evaporation technology in salting-out crystallization.

SiCl4 stable evaporation supply device based on continuous silicon infiltration method for preparing high silicon steel thin strip belongs to the technical field of high silicon steel preparation, and comprises a SiCl4 evaporation tank, a constant temperature water bath box, a SiCl4 liquid supplement tank, an inert gas input pipe, a SiCl4 liquid supplement pipe and a pressure balance pipe; the SiCl4 evaporation tank is immersed in the constant temperature water bath box; the SiCl4 liquid supplement tank is located above the SiCl4 evaporation tank, the liquid outlet at the bottom of the SiCl4 liquid supplement tank is communicated with the inside of the SiCl4 evaporation tank 1 through the SiCl4 liquid supplement pipe, the gas pressure balance port at the top of the SiCl4 liquid supplement tank is communicated with the inside of the SiCl4 evaporation tank through the pressure balance pipe, the lower end of the pressure balance pipe is flush with the upper limit of the SiCl4 liquid in the SiCl4 evaporation tank; the pressure balance pipe outside the SiCl4 evaporation tank is coaxially sleeved with a liquid level fluctuation isolation sleeve; the lower end of the pressure balance pipe is dynamically matched with the rising and falling of the SiCl4 liquid surface, the dynamic liquid supplement of the SiCl4 liquid in the SiCl4 evaporation tank is realized, the continuous stability of the SiCl4 liquid surface is realized through the dynamic liquid supplement, and the device has the characteristics of simple structure, easy operation, high safety and low cost.

This disclosure provides systems and methods for purifying precursor compounds. One method includes one or more of the following steps: mixing a crude product solution with a first solvent, wherein the crude product solution comprises a precursor compound and at least one impurity; wherein the boiling point of the first solvent is higher than the boiling point of the crude product solution; feeding at least the mixture of the crude product solution and the first solvent into an evaporator; and collecting a distillate comprising the precursor compound from the evaporator, wherein the purity of the precursor compound in the distillate is greater than 95%, as determined by [further steps]. 1 Determined by H NMR. Other methods and systems are presented in this paper.

The invention belongs to the technical field of lithium salt purification, and discloses a lithium extraction method and a lithium extraction device. The method comprises the following steps: providing a lithium-containing mixed salt; contacting the lithium-containing mixed salt with an organic solvent to form an organic solution rich in lithium salt and a mixed system containing an undissolved sodium salt solid; and carrying out interface evaporation on the mixed system to remove part of the organic solvent and promote the precipitation of the sodium salt, and enriching the lithium salt in the residual liquid phase to realize the separation of the lithium salt and the sodium salt. The method provided by the invention can realize high-efficiency and high-selectivity separation of the lithium salt and the sodium salt.

The invention belongs to an amide intermediate treatment device and method for hydrazine hydrate production. Comprising a concentration tank, the concentration tank is provided with a water-phase reaction liquid inlet pipeline and a catalyst inlet, the catalyst inlet is connected with a quartz sand catalyst preparation unit, an outlet of the concentration tank is connected with a concentrated material inlet of an intermediate recovery kettle, and the intermediate recovery kettle is further connected with an ammonia feeding pipeline. An ammoniation liquid outlet of the intermediate recovery kettle is connected with a separation and recovery unit, and a liquid phase outlet of the separation and recovery unit is connected with a hydrazine compound synthesis section; a steam discharge pipeline is arranged at the top of the concentration tank; the method has the advantages that moisture in the water-phase reaction liquid can be removed, ammonium formate is converted into formamide and recycled, meanwhile, metal ions are prevented from being contained in ammoniation liquid, and further, the treatment cost is reduced and continuous treatment is achieved on the basis of energy conservation and consumption reduction.

The invention discloses an emulsion preparation device and an emulsion preparation method using the same, the device comprises a mixer main body, a liquid inlet conduit, a liquid outlet conduit and a feeding assembly, the mixer main body has a three-way flow channel structure, an optional flow channel is a liquid outlet flow channel, the other two flow channels are liquid inlet flow channels, the liquid outlet conduit is communicated with the liquid outlet flow channel, and the feeding assembly is communicated with the liquid inlet flow channel. The liquid inlet guide pipe is communicated with the liquid inlet flow channel, and the feeding assembly is communicated with the liquid inlet guide pipe. The method for preparing the emulsion comprises the steps that the dispersed phase and the mobile phase are obtained, the continuous phase and the dispersed phase are put into the two liquid inlet flow channels of the mixer body through the liquid inlet guide pipes by means of the feeding assembly, the emulsion formed after mixing flows out of the liquid outlet flow channels and is collected, the flow speed ratio of the continuous phase to the dispersed phase is 2: 1-4: 1, and the total flow speed is 60-750 mL / min. According to the scheme, the emulsion with the appropriate particle size is prepared at the low flow speed, the feeding temperature range is wide, the device is simple, the channel dead volume is small, and the device is suitable for both laboratories and industrial production.

Methods and systems for separating a first metal and an impurity 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 utility model relates to the technical field of alcohol extraction, in particular to a secondary alcohol cooling and extracting system which comprises an evaporating tank and a collecting tank, the evaporating tank is connected with the collecting tank through a cooling and extracting device, the cooling and extracting device comprises a condenser, and the condenser is fixedly connected to the top of the evaporating tank through a supporting component; wherein the supporting component comprises a first supporting part and a second supporting part, and the first supporting part and the second supporting part are used in a telescopic mode through an adjusting assembly; a fixing assembly is arranged on the top of the second supporting part and used for fixing the condenser, the condenser can be conveniently adjusted and installed through an adjusting assembly, the condenser is limited and supported through an annular part, then a connecting belt is pulled to abut against the condenser, and after the connecting belt and a clamping rod are fixed, the effect of conveniently installing the condenser is achieved. The condenser is convenient to disassemble and assemble, and meanwhile the downtime can be effectively shortened.