426results about "Crystallization by component evaporation" patented technology

A ternary deep eutectic solvent (TDES) system for a biomolecule (for example, chitin) recovery from a biomass (for example, seafood waste), and the method of preparation of ternary deep eutectic solvent (TDES) system, and a process to differentiate / extract / recover biomolecules (such as chitin) from a biomass (such as seafood waste).

The invention discloses a low-cost and environment-friendly process for producing 1, 4-bis (4-fluorobenzoyl) benzene, and belongs to the technical field of Friedel-Craft reaction, fluorobenzene and paraphthaloyl chloride react to generate 1, 4-bis (4-fluorobenzoyl) benzene, after reaction quenching, filtering is performed to obtain a crude product 1, 4-bis (4-fluorobenzoyl) benzene and filtrate, and the 1, 4-bis (4-fluorobenzoyl) benzene is purified in a sublimation crystallization mode; standing and layering the filtrate in an inclined plate layering device, respectively treating an oil layer and a water layer, dehydrating a fluorobenzene layer in a dehydrating tower, and returning fluorobenzene; the water phase is firstly subjected to organic matter removal treatment, the obtained organic matter enters a fluorobenzene recovery device to be sleeved back, and the obtained water phase is a byproduct of crystallized aluminum chloride in an evaporative crystallization device. According to the process, the 1, 4-bis (4-fluorobenzoyl) benzene is produced in a sublimation crystallization mode instead of a solution crystallization mode, no waste solvent is generated, the waste solvent does not need to be recycled, the cost is low, organic matter removal and evaporative crystallization treatment is carried out on wastewater, organic matter recycling is carried out, crystalline aluminum chloride is produced as a byproduct, and wastewater and waste salt are not discharged.

The invention provides a method and system for salt separation, evaporation and crystallization of printing and dyeing wastewater, and the method comprises the following steps: sequentially carrying out multi-stage synergistic pretreatment on textile printing and dyeing wastewater to remove suspended solids, degrade organic matters and reduce hardness; the pretreated wastewater is subjected to membrane salt separation treatment, and preliminary separation of salt is achieved through reverse osmosis pre-concentration and nanofiltration salt separation; and respectively carrying out evaporative crystallization treatment on the separated high-concentration salt solution to obtain high-purity sodium sulfate and sodium chloride products. According to the method, the salt recovery rate and the product purity are remarkably improved, the energy consumption and the operation cost are reduced, meanwhile, the problems that in traditional printing and dyeing wastewater treatment, salt is difficult to separate, and the crystallization purity is low are solved, and an innovative solution is provided for high-valued resource recovery of industrial wastewater.

The invention discloses a process and equipment for producing special melamine by a gas phase quenching method. The production process comprises the following steps: hot process gas from an outlet of a melamine reactor is in contact with cold process gas in a crystallizer, a generated solid A is discharged from the bottom of the crystallizer, and mixed gas enters a trap for gas-solid separation to obtain a solid B; the solid A is conveyed into a high-pressure collecting device A through high-pressure conveying gas A, it is ensured that the temperature of the high-pressure conveying gas A is higher than 120 DEG C in the conveying process, after gas-solid separation is conducted in the high-pressure collecting device A, the solid A is conveyed into a packaging device A through low-pressure conveying gas A, and it is ensured that the temperature of the solid A at the conveying tail end does not exceed 85 DEG C.

The invention provides an evaporative crystallization device and process for fluorine-containing high-salinity wastewater, and relates to the technical field of high-salinity wastewater treatment.The evaporative crystallization device for the fluorine-containing high-salinity wastewater comprises a support and an evaporation tank, and a first material opening used for communicating a stacking ring cavity with a material storage cavity is formed in an inner cylinder; a second material opening for communicating the material storage cavity with the material discharge cavity is formed in the first baffle plate; the heating assembly is in contact with and heats the wastewater to evaporate and discharge a wastewater solvent, a wastewater solute is gradually separated out to form crystals and moves towards the material stacking ring cavity, the first material opening is controlled to be opened, the second material opening is controlled to be closed, the crystals in the material stacking ring cavity enter the material storage cavity through the first material opening, and then the first material opening is controlled to be closed and the second material opening is controlled to be opened; the crystals in the material storage cavity enter the material discharging cavity through the second material opening, the crystals in the material discharging cavity are discharged through the first auger, the separated crystals can be continuously discharged without shutdown, meanwhile, the negative pressure environment in the evaporation tank is prevented from being damaged, and the working efficiency is improved.

The invention belongs to the technical field of evaporative crystallization equipment, and particularly discloses low-temperature evaporative crystallization equipment which comprises a crystallization kettle and a lubricating oil tank. A rotating shaft is arranged in the crystallization kettle, two ends of the crystallization kettle are respectively provided with a bearing chamber, a communicating hole is arranged between the crystallization kettle and the bearing chamber, a bearing for supporting the rotating shaft is arranged in the bearing chamber, and a sealing device or a sealing mechanism is arranged between the rotating shaft and the communicating hole. A lubricating oil pipeline is arranged between the lubricating oil tank and the bearing chamber, a pressure balance pipeline is arranged between the lubricating oil tank and the crystallization kettle, a plurality of paddle wheels are axially arranged on the rotating shaft at intervals, and each paddle wheel is provided with a plurality of paddles annularly distributed around the rotating shaft. A material scraping device is arranged between at least one pair of paddles of the adjacent paddle wheels, and a slag discharging opening is formed in the crystallization kettle. The problems that in the prior art, materials are prone to being discharged through the bearing chamber, and spiral propelling blades hinder material flowing are solved. The evaporation crystallization efficiency and the condensate scraping effect are remarkably improved, the gas-liquid separation efficiency is optimized, and meanwhile air pollution is reduced.

The embodiment of the invention provides an evaporation system control method and an evaporation system, and relates to the technical field of control, the method is applied to a control system in an MVR evaporation system.The method comprises the steps that in response to a starting instruction, a feeding system is controlled to pump to-be-treated liquid into an evaporation crystallization system, and the real-time boiling point rise of the evaporation crystallization system is monitored; and determining to adopt an optimal recovery rate control mode or a boiling point rise control mode as a target control mode based on the real-time boiling point rise, and controlling the feeding system, the evaporative crystallization system and the water production system to treat the to-be-treated liquid according to a preset strategy corresponding to the target control mode, the frequency of the distilled water and the flow of the to-be-treated liquid pumped by the feeding system meet the corresponding recovery rate, so that the control intelligence and reliability of the MVR evaporation system are improved.

The invention provides an ultrasonic-assisted gamma-aminobutyric acid crystallization particle size regulation and control method, which comprises the following steps: removing impurities and decolorizing gamma-aminobutyric acid-containing feed liquid, heating, stirring and concentrating to a nearly saturated state, then carrying out ultrasonic-assisted crystallization, cooling, aging and suction filtration to obtain coarse crystals, and finally washing and drying to obtain target crystals. According to the method, a synergistic process of raw material liquid pretreatment, evaporation concentration-ultrasonic-cooling coupling crystallization, aging and post-treatment is adopted, an ultrasonic cavitation effect is utilized to reduce a nucleation barrier, and a supersaturation degree precise control and gradient cooling strategy is combined, so that grain size refinement, obvious narrowing of distribution and effective inhibition of agglomeration of crystals are realized; the median particle size of the crystal can be controlled to be smaller than or equal to 200 microns, the particle size distribution span is smaller than or equal to 1.5, the agglomeration phenomenon is remarkably inhibited, the crystal form is kept stable, the crystal habit is complete and smooth, the crystal product quality and the process efficiency are remarkably improved, and the method has important industrial application value.

According to the present invention there is provided processes for the recovery of lithium from end-of-life lithium-ion batteries and battery matter. A representative process resides in a process for separating lithium from lithium ion batteries before undertaking hydrometallurgical or pyrometallurgical processing, the process comprising: providing a black mass (BM) or shredded battery material (SBM) that includes cation and anion components; commixing the BM or SBM with an admixture that includes water and supercritical carbon dioxide; and separating an aqueous leachate and a lithium-leached BM or SBM, where the aqueous leachate includes a lithium carbonate and / or bicarbonate.

This disclosure provides an optimized, energy-efficient, and sustainable solution for continuous in situ bio-based chemical recovery by integrating high pressure reverse osmosis with extraction processes. These systems achieve higher recovery efficiency while reducing production costs and environmental impact.

The invention belongs to the technical field of magnesium desulfurization wastewater treatment, and particularly relates to a magnesium desulfurization wastewater evaporation concentration material transfer anti-crystallization blockage system which comprises an evaporation separator and crystallizers, a circulation pipeline is arranged between an inlet and an outlet of a material transfer pump, and a material transfer pipeline is connected between a material transfer regulating valve and the crystallizers. The circulating pipeline and the branch pipelines are respectively communicated with the material transferring pipeline through branch pipelines, and the circulating pipeline and the branch pipelines are detachable metal hoses; a steam inner pipe is arranged in the material transferring pipeline, a heat preservation layer is arranged outside the material transferring pipeline, and opening degrees of the material transferring adjusting valve and the steam adjusting valve are in linkage control. Compared with the prior art, the device has the beneficial effects that effective anti-blocking prevention and emergency treatment are carried out on materials which are long in material transfer pipeline, rapid in concentration and temperature change and easy to crystallize in multi-point material transfer, cooperative control over the temperature of the separator feed liquid and the temperature of the material transfer pipe feed liquid is achieved, and concentration and temperature monitoring is carried out on the output feed liquid; materials always flow in the material transfer pipeline, and continuous production operation is guaranteed.

The invention discloses a water pollution collaborative treatment device and a method for using the same. The device comprises a floating object collecting mechanism, a microbial purification mechanism, a plant purification mechanism and a suspended filtering mechanism which are arranged in a river channel and used in coordination with each other. The floating object collecting mechanism comprises a floating collecting support shell floating on the water surface, the upstream end of the floating collecting support shell is rotatably provided with a horizontally arranged chain driving wheel, the downstream end of the floating collecting support shell is rotatably provided with a horizontally arranged chain driven wheel, a collection driving chain is provided for transmission connection between the chain driving wheel and the chain driven wheel, and a plurality of floating object blocking rods are fixed to the outside of the collection driving chain. The invention has a highly efficient pollution treatment capability, can effectively remove various pollutants in water, such as suspended solids, organic matter, nutrients such as nitrogen and phosphorus, and harmful substances such as heavy metals, has targeted treatment means for different types of pollutants, and ensures that the water quality is significantly improved.

The invention discloses integrated MVR (Mechanical Vapor Recompression) evaporative crystallization equipment, and relates to the technical field of evaporative crystallization. Comprising a frame body which is fixedly connected with an evaporation shell, a separator and a crystallizer; the first plate is rotationally connected into the evaporation shell; the first plate is arranged in the evaporation shell, the second plate is arranged in the evaporation shell, heat exchange pipes which are arranged at intervals are fixedly connected between the first plate and the second plate, and the heat exchange pipes are spiral and are used for bearing the gravity of a liquid medium, so that the first plate and the evaporation shell rotate relatively. Torque is applied to the heat exchange pipe through the gravity of a liquid medium, so that the heat exchange pipe rotates, steam in the evaporation shell is disturbed, and the temperature of all positions in the evaporation shell is uniform; therefore, the evaporation degree of the liquid medium in each heat exchange tube tends to be the same (the scaling phenomenon caused by excessive evaporation of the liquid medium in each heat exchange tube is prevented), and the uniformity of crystal precipitation during subsequent crystallization is facilitated.

The invention provides a process for recovering sodium sulfate, sodium carbonate and glaserite in alkali ash and removing chloride ions. The process specifically comprises the following steps: dissolving the alkali ash; sodium sulfate and sodium carbonate in the alkali ash solution are separated through hot crystallization; cooling, crystallizing and separating glaserite in the alkali ash solution; sulfate ions and carbonate ions in the alkali ash solution are separated from chloride ions; and further separating sodium sulfate, sodium carbonate, glauberite and the like in the alkali ash solution. Meanwhile, the invention provides a system for implementing the process. The system comprises an alkali ash dissolving unit, a main crystallization unit, a glaserite crystallization unit, a nanofiltration unit and other elements. According to the process and the system provided by the invention, on one hand, sodium sulfate and sodium carbonate in the alkali ash solution can be extracted, glaserite can be extracted at the same time, chloride ions in the solution are removed at the same time, and the discharge amount of mother liquor is reduced.

Producing high purity lithium solution from a source brine containing at least 1 mg Li / kg brine, preferably 10 mg / kg, more preferably 25 mg Li / kg brine; treating the source brine, if necessary in pretreatment steps; processing the treated brine in a lithium adsorption step; after the adsorption step, desorbing the adsorbed lithium in a desorption step; after the desorption step, treating the desorption effluent in an enrichment step. Specified optional steps and new features can be used to increase lithium concentrations and purity.

The invention discloses a crystallization device for sodium sarcosinate production, relates to the technical field of crystallization devices, and aims to solve the problems that when supersaturated liquid drops make contact with the wall surface of a low-temperature gas-liquid separator, water evaporation is intensified, the solubility of solute is further reduced due to temperature reduction, crystal precipitation is accelerated under the dual action, the supersaturated liquid drops are prone to being attached to the wall of a tank in the crystallization process, and the crystallization effect is poor. In order to solve the problems that the heat exchange efficiency is influenced by scaling of a tank wall, wall-adhered crystals cannot be recycled and the yield is reduced in the prior art, an evaporator is mounted on one side of a gas-liquid separator, a cyclone separator is mounted on the other side of the gas-liquid separator, an ultrasonic disperser is mounted on one side of the cyclone separator, a membrane filter is mounted on one side of the ultrasonic disperser, and a water outlet is formed in the other side of the membrane filter. A gas-liquid separator cleaning mechanism is mounted in the gas-liquid separator, a gas-liquid separator scraping frame is mounted at one end of the gas-liquid separator cleaning mechanism, and a membrane filter cleaning mechanism is mounted in the membrane filter.

The invention relates to the field of calcium gluconate evaporative crystallization equipment, in particular to a crystallizing tank for calcium gluconate crystallization production and a using method thereof.The crystallizing tank comprises an evaporative crystallization tank body, the evaporative crystallization tank body comprises a tank body, a stirring and uniform heating assembly is arranged on the inner edge of the tank body, and an adaptive adjusting assembly is installed on one side of the stirring and uniform heating assembly; a crystal transfer assembly is arranged at the middle part in the tank body; the stirring and uniform heating assembly is used for stirring the to-be-crystallized solution in the tank body to uniformly disperse heat; the adaptive adjusting assembly is used for adaptively adjusting the stirring and heat uniformizing assembly according to the evaporation progress; according to the crystal stirring device, the situation that the stirring work is easily affected in the later period that the crystals are continuously accumulated at the bottom in the tank body and become high can be avoided, and meanwhile the situation that the crystals are likely to collide with a stirring component along with flowing of a solution, and consequently the crystals are broken can be effectively reduced.

According to the low-energy-consumption evaporating crystallizer, a single driving motor is adopted, a rotating shaft rod is used for simultaneously driving a scale scraping assembly arranged in an evaporating cylinder to conduct dynamic scale scraping and solution stirring, one end of the rotating shaft rod passes through a first transmission mechanism and a linkage shaft, and the other end of the rotating shaft rod is driven by a second transmission mechanism. A spiral separation assembly in the gas-liquid separation tank is driven by the direction conversion mechanism to rotate at a high speed so as to strengthen gas-liquid separation; and the other end of the discharging pipe drives a discharging assembly in the discharging pipe to rotate through a second transmission mechanism, so that discharging blockage prevention and negative-pressure deslagging are realized. Through a single power source, cooperative linkage of five functions of scale scraping, stirring, separation, blocking prevention and slag discharging is achieved, the structure is compact, the problems that traditional equipment is serious in scaling, poor in gas-liquid separation effect and prone to blockage during discharging are effectively solved, and meanwhile energy consumption of the equipment is remarkably reduced.

The invention relates to the technical field of ammonium dihydrogen phosphate preparation, and discloses a high-purity ammonium dihydrogen phosphate crystallization device and a method thereof.The high-purity ammonium dihydrogen phosphate crystallization device comprises a first-stage crystallization system, a first-stage centrifugal separation system, a second-stage crystallization system and a second-stage centrifugal separation system which are connected in series. The primary crystallization system comprises a crystal elimination heater, a crystal elimination mixer, a bag filter and a DTB flash cooling crystallizer which are connected in sequence, and is used for primarily purifying a concentrated solution; the primary centrifugal separation system is used for separating primary crystals; the second-stage crystallization system comprises a crystal dissolving tank, an OSLO cooling crystallizer and the like, and deep crystallization is carried out after the first-stage crystal is dissolved; the secondary centrifugal separation system is used for separating secondary crystals; through two-stage crystallization coupling, mother liquor graded circulation, a unique gradient washing process and active impurity control, efficient and continuous production of battery-grade ammonium dihydrogen phosphate with wet-process phosphoric acid as a raw material is realized, the product purity is high, the process flow is simplified, the cost is low, and the system operation is stable.

The invention provides an L-lactide purification device and an L-lactide purification method. The L-lactide purification device comprises a crystallization unit, an evaporation unit, a condensation unit and an extraction unit, the crystallization unit is at least used for crystallizing, sweating and melting the raw materials to form L-lactide and crystallization raffinate; the inlet of the evaporation unit is communicated with the crystallization residual liquid outlet of the crystallization unit, and the evaporation unit is at least used for evaporating the crystallization residual liquid to form evaporation gas; an inlet of the condensation unit is communicated with a gas phase outlet of the evaporation unit, and the condensation unit is at least used for condensing the evaporation gas to form condensate; a liquid phase inlet of the extraction unit is communicated with a liquid phase outlet of the condensation unit, and the extraction unit is at least used for extracting condensate to form a first component containing L-lactide; the outlet of the extraction unit is communicated with the crystallization unit, so that the crystallization unit adopts the first component as a raw material for crystallization. According to the embodiment of the invention, the yield of the L-lactide can be improved, and the L-lactide with high chemical purity and high optical purity can be obtained.

The application provides an amino acid composite reagent system and a method for treating electronic waste to prepare high-purity glycine copper, and belongs to the technical field of metal hydrometallurgy and resource recycling. The application builds an ammonia catalytic reduction mechanism by designing an amino acid composite reagent system, greatly improves the leaching rate, simultaneously inhibits the dual effects of copper hydroxide precipitation and glycine chelation, and realizes efficient solution of copper ions; through narrow window regulation technology of pH at 9.5±0.2, the stability of ammonia, the activity of glycine anion are maintained, and the selective leaching rate of copper is ensured; a directional crystallization process of leaching solution is constructed, the "self-assembly directional crystallization" process of glycine copper chelate is used, based on the saturation concentration of glycine copper in the leaching solution and the stable chelate structure, through three-stage crystallization precise regulation, the preparation of high-purity crystal is realized. The process realizes the closed-loop crystallization system of "zero addition of crystal seeds and zero wastewater discharge" of the copper-containing complex leaching solution of electronic waste.

The invention discloses a method for efficiently recycling ammonium sulfate in electrolytic manganese residues. The method comprises the following steps that firstly, 0.5-1.5 parts of the electrolytic manganese residues and 2-4 parts of clear water are taken and put into a stirring machine to be fully and evenly stirred; 2, adding an acidic reagent into the slurry obtained in the step 1 after fully and uniformly stirring, adjusting the pH value, and then continuously stirring to obtain slurry; 3, the slurry obtained in the step 2 is pumped into a filter press for solid-liquid separation, filtrate and filter residues are obtained, and the filtrate is collected for standby application; 4, the filtrate in the step 3 is returned to the step 1 to replace 2-4 parts of clear water, and then 0.5-1.5 parts of electrolytic manganese residues are taken and put into a stirrer to be fully and evenly stirred; 5, repeating the step 2 and the step 3 on the slurry in the step 4 to obtain filtrate for later use; the invention aims to solve the problems that the electrolytic manganese residue recovery device in the prior art needs to be washed for multiple times, the water consumption is large, other impurities are always remained in water after washing, and the subsequent treatment difficulty is increased.

The invention discloses a use method of 2, 4-dihydroxybenzoic acid dissolving and recrystallizing equipment, the 2, 4-dihydroxybenzoic acid dissolving and recrystallizing equipment comprises a closed dissolving kettle, a crystallization kettle and a mother liquor storage tank, the closed dissolving kettle, a first separator, a first filtrate storage tank and the crystallization kettle are connected in sequence, and the mother liquor storage tank is connected with a second separator. A discharge port of the crystallization kettle is connected with a feed port of a second separator, a filtrate discharge port of the second separator is connected with a liquid inlet of a second filtrate storage tank, and a liquid outlet of the second filtrate storage tank is communicated with a liquid inlet of the mother liquid storage tank through a third pipeline; the second pipeline between the first separation column and the second pump body is communicated with a liquid outlet of the mother liquid storage tank through a fourth pipeline; the second pipeline between the second pump body and the fourth pipeline is communicated with one end of a backflow pipeline, and the other end of the backflow pipeline is communicated with the first pipeline. The 2, 4-dihydroxy benzoic acid dissolving and recrystallizing equipment disclosed by the invention can be used for preparing 2, 4-dihydroxy benzoic acid with the purity of 99.68%, and the content of metal ions is reduced to 0.15 ppm.

The invention relates to the technical field of chemical engineering, and discloses an amide oil separation and ammonium sulfate crystallization integrated device. Comprising a neutralization reactor, a settling separation tank, a pre-crystallization solution tank, a DTB crystallizer, a centrifugal machine, a settling separator, a dryer, a mother liquor tank, a condensate water tank, an amide oil decanter, an ammoximation tert-butyl alcohol tower reboiler, a mother liquor heater set, a condenser, a vacuumizing condensing unit, a stirrer set and a reactor circulating pump. The invention further comprises a process for preparing the large-particle ammonium sulfate crystal from the saturated amide oil solution, rearrangement liquid from a lactam rearrangement system and gas ammonia are added into a neutralization reactor through an external circulation pipeline, and the large-particle ammonium sulfate crystal is prepared by fully utilizing heat in the gas ammonia dissolution and neutralization reaction and crystallization process. By combining the compound additive, the seed crystal and the continuous crystallization technology, the generation of large-particle ammonium sulfate crystals is promoted, meanwhile, the crystallization process is optimized, an efficient amide oil separation and continuous crystallization mode is realized, the energy consumption is saved, and the production efficiency is improved.

The invention provides a crystallization kettle for magnesium lithium silicate production, and relates to the field of magnesium lithium silicate production. The device comprises a base and a conveying device, the upper surface, close to the rear end, of the base is fixedly connected with a limiting plate, the upper surface of the base is movably connected with a heating device, and the rear end of the heating device is movably connected to the inner side surface of the limiting plate. According to the crystallization kettle device, the heating device is arranged to heat the crystallization kettle device, the transportation device is arranged to transport the crystallization kettle device into the heating device, the crystallization kettle device is moved out when cooling is needed, another crystallization kettle device is replaced for continuous reaction, a new reaction does not need to be carried out after cooling in the crystallization kettle device is completed, the time is saved, and the production efficiency is improved. The crystallization kettle device is simple in structural design, a plurality of crystallization kettle devices can be produced for replacement, the production efficiency is improved, the crystallization kettle device is continuously rotated by 90 degrees in the forward direction and the reverse direction through the arranged stirring device, so that raw materials in the tank body are stirred through the stirring rod by utilizing inertia, and the stirring efficiency is improved.

Processes and systems for preparing lithium carbonate with energy recovery. Various fluid streams are directed to one or more energy recovery devices to improve energy efficiency and system performance during lithium carbonate production. Lithium in a saltwater is extracted by applying direct lithium extraction to produce a lithium recovery solution. The lithium recovery solution is concentrated by a membrane concentrator and heated, and chelating ion exchange is used to purify the heated lithium recovery solution by removing multivalent cations and / or boron from it. The concentrated and purified lithium recovery solution is then reacted with sodium carbonate at a temperature of at least 70 °C to produce a lithium carbonate slurry, which is separated into lithium carbonate solids and a mother liquor. Prior to purification, the concentrated lithium recovery solution is heated using heat from at least one of the unconcentrated lithium recovery solution or the mother liquor.

A liquid separation method (10) for separating mono ammonium phosphate ("MAP") (20) in aqueous solution, includes: • a receiving step in which a process liquid which comprises water and MAP is received; • a cooling step in which a controlled cooling process is applied to the process liquid to induce the crystallization (14) of MAP; • a separating step (16) in which the crystallised MAP is separated from the remaining process liquid.

A process is provided for the formation of high purity magnesium L-lactate crystals from homogeneous and heterogeneous decomposed organic wastes. The process provides magnesium L-lactate crystals with improved enantiomeric and overall purity that are particularly suitable for reuse in the production of new polylactic acid.

A process for removing lactic acid from an aqueous lactic acid-containing magnesium chloride solution, the weight ratio of magnesium chloride to lactic acid in the aqueous lactic acid-containing magnesium chloride solution being at least 1:1, the process including the steps of subjecting the aqueous lactic acid-containing magnesium chloride solution to an evaporation step, resulting in the formation of a slurry of MgCl2·MgL2·4H2O in an aqueous magnesium chloride solution, then subjecting the slurry to a solid-liquid separation step, to separate the solid MgCl2·MgL2·4H2O from the aqueous magnesium chloride solution, resulting in the removal of lactic acid from the aqueous lactic acid-containing magnesium chloride solution in the form of MgCl2·MgL2·4H2O. The process makes it possible to efficiently remove lactic acid from aqueous lactic acid-containing magnesium chloride solutions, resulting in magnesium chloride solutions with a low lactic acid content which can be further processed as desired.

A hybrid process and system for separating water from an inlet brine solution is disclosed. The hybrid process couples at least two different separation processes / systems. The inlet brine solution is fed into a first separation process, which produces a water distillate and a brine concentrate. The brine concentrate from the first separation process is then fed into the second separation process to further recover additional water. The excess heat from the second separation process is supplied to the first separation process.