601 results about "Clear liquid" patented technology

The invention discloses a technological method for extracting lithium, rubidium and cesium through a lepidolite chlorate method. The technological method comprises the steps that lepidolite, calcium chloride, sodium chloride and calcium oxide are mixed and then roasted, and clinker is obtained; leaching the clinker under an acidic condition to obtain brine; performing impurity removal treatment on the brine to obtain purified clear liquid; performing lithium precipitation on the purified clear liquid through sodium carbonate liquid; the method comprises the following steps: extracting filtered waste liquid subjected to lithium precipitation through an extracting agent and a dispersing agent, washing a rubidium and cesium oil phase obtained by extraction by adopting two-section multi-stage cross flow of different detergents to obtain an organic phase, and carrying out reverse extraction on the obtained organic phase to reversely extract rubidium and cesium into reverse water; and preparing salt from the reverse water in an evaporation drying manner. According to the method, after the lepidolite is subjected to roasting transformation leaching, the leaching rate of lithium can reach 94% or above, the leaching rates of rubidium and cesium can reach 98% or above, the process of extracting lithium, rubidium and cesium from the lepidolite to prepare corresponding salt products is environmentally friendly, energy-saving, low in energy consumption, low in cost and high in extraction rate, and wide industrial application prospects are achieved.

The invention relates to the technical field of food, and provides a pea complete protein component and a preparation and identification method thereof.The preparation method of the complete protein comprises the steps that pea kernel powder and water are mixed and then subjected to first solid-liquid separation, and first clear liquid is obtained; adjusting the pH value of the first clear liquid to 5.8-6.2 to obtain a protein mixed liquid; adding lactic acid bacteria into the protein mixed solution, and standing for 1-3 hours at the temperature of 10 DEG C or below for layering; removing a bottom layer material of the layered material to obtain a residual material, and carrying out second solid-liquid separation on the residual material to collect a precipitate; performing first drying on the precipitate to obtain protein isolate; mixing the separated protein and water, and performing third solid-liquid separation to obtain a second clear liquid; and separating the second clear liquid through an ultrafiltration membrane, and performing secondary drying on the obtained percolate to obtain albumin, namely the complete protein. The method disclosed by the invention is green and environment-friendly, and the extracted complete protein is good in balance and meets nutritional requirements.

The invention belongs to the technical field of organic synthesis of ethers, and particularly relates to a method for continuously synthesizing ethylene glycol dimethyl ether. The method comprises the following steps that ethylene glycol, sodium hydroxide and methane chloride serve as raw materials, multi-stage continuous reaction is carried out in liquid membrane reactors to synthesize ethylene glycol dimethyl ether, ethylene glycol, sodium hydroxide and methane chloride are introduced into the first-stage liquid membrane reactor, sodium hydroxide and methane chloride are introduced into the subsequent stages of liquid membrane reactors, and the first-stage liquid membrane reactor and the second-stage liquid membrane reactor are connected with the second-stage liquid membrane reactor. A byproduct sodium chloride is separated from a reaction product in the previous-stage liquid membrane reactor and then enters the next-stage liquid membrane reactor, a byproduct sodium chloride is separated from a reaction product in the last-stage liquid membrane reactor and then clear liquid is obtained, and ethylene glycol dimethyl ether is obtained through rectification treatment. The invention develops a novel process mode for continuously synthesizing an ethylene glycol dimethyl ether product, and provides a new idea for large-scale continuous production of ethylene glycol dimethyl ether.

The invention provides a method for recovering Si, C and TiO2 based on chlorinated waste salt water quenching slag, which comprises the following steps: sequentially carrying out water quenching dissolution, precipitation separation and filter pressing dehydration treatment on chlorinated waste salt to obtain water quenching slag and supernate; adding a dilute acid solution into the water-quenched slag, dissolving, and adding a reducing agent for reaction to obtain slurry; carrying out solid-liquid separation on the slurry to obtain a solid material and filtrate; the filtrate is pumped into a boiling bed separator, the petroleum coke and TiO2 are intercepted by a medium material layer, clear liquid is discharged, then the medium material layer is subjected to backwashing regeneration, and the desorbed petroleum coke and TiO2 are subjected to graded enrichment by a hydrocyclone, so that petroleum coke slurry and TiO2 slurry are obtained. According to the method, TiO2, C and other resources in the water-quenched slag obtained after molten salt chlorination waste salt water quenching are recycled, and the technical problem that in the existing chlorination waste salt resourceful treatment process, Si, C, TiO2 and other resources in the water-quenched slag are wasted is solved.

The invention discloses a method for recovering high-quality germanium concentrate from scrapped glass optical fibers, and belongs to the technical field of rare metal recovery. Crushing and screening the scrapped glass optical fiber to obtain optical fiber powder; the optical fiber powder and NaOH or Na2CO3 are uniformly mixed, the molar ratio of NaSi to NaGe of the mixture is (3-6): 1, and roasting is conducted for 2-4 h at the temperature of 500-800 DEG C; mixing the roasted material with water according to a solid-to-liquid ratio of 1: (4-10), heating to 50-100 DEG C, stirring and dissolving to generate a leaching solution; after filtering, feeding the filtered clear liquid into a spraying device filled with adsorption resin from an inlet of the device at the temperature of 5-40 DEG C and the flow speed of 5-50mm / min; and feeding an inorganic acid desorption agent into a spraying device from an outlet of the device at the temperature of 50-80 DEG C and the flow speed of 10-100mm / min, collecting the desorbed liquid, and adding water which is 3-5 times of the theoretical hydrolysis amount to obtain the germanium concentrate. The method is simple in technological process, low in energy consumption and high in metal direct recovery rate, the germanium mass content of the enriched germanium concentrate is larger than 40%, the germanium recovery rate is larger than 92%, the main component obtained after germanium recovery is sodium silicate, and multiple benefits of resources, economy, environment and the like are achieved.

The invention discloses a coal slime water sedimentation treatment method based on dynamic agent addition and intelligent monitoring. The method comprises the following steps: sample collection and pretreatment; pre-preparing a medicament and testing the suitability; adding a dynamic agent; the sedimentation process is optimized; real-time monitoring and feedback control are carried out; and treating after settling and recovering clear liquid. By monitoring the turbidity and the settling time of the slime water in real time and dynamically adjusting the dosage of the medicament, the problems of over-high medicament consumption and non-uniform settling effect caused by fixed medicament dosage in the prior art are effectively solved. And through precise medicament management, the medicament cost is remarkably reduced, and the resource utilization efficiency is improved. Through the design of the multi-stage sedimentation tank and the sectional sedimentation technology, the sedimentation efficiency is improved, the sedimentation space is fully utilized, the sedimentation time is shortened, and an excellent sedimentation effect is achieved. Due to the design of the multi-stage sedimentation tank, the flexibility and adaptability of the sedimentation process are enhanced, the device is suitable for different slime water characteristics, and the overall sedimentation efficiency is improved.

The invention provides novel application and a method of asiaticoside. The method comprises the following steps: S1, extraction: taking a centella asiatica medicinal material, performing coarse crushing, adding ethanol, performing reflux extraction, performing filtration, and combining filtrate for standby application; s2, concentrating: concentrating the ethanol extracting solution under reduced pressure until no alcohol smell exists, centrifuging, and reserving supernate for later use; s3, carrying out D101 column chromatography; s4, alumina column chromatography; s5, performing concentration; s6, drying; s7, dissolving with methanol, adding water, standing, and monitoring clear liquid and crystallization conditions in a liquid phase; s8, filtering after crystallization is finished, washing with ethanol, drying crystals under the conditions that the vacuum degree is-0.06 to-0.08 mpa and the temperature is 60-70 DEG C, and crushing and sieving dry paste to obtain asiaticoside; specifically, the new application comprises reduction of uric acid (UA), urea (UREA), creatinine (CREZ), low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C) and total cholesterol (CHOL) in serum of a hyperuricemia model SD rat, and reduction of damage of hyperuricemia to kidney. And the yield of asiaticoside extracted by the method is high and is about 84%.

The invention relates to the technical field of wastewater treatment, and discloses a treating agent for oily wastewater, a treating device and a treating method.The treating agent comprises the following steps that S1, the oily wastewater enters the treating device firstly, S2, the wastewater is lifted to a reaction tank through a pump, S3, the wastewater added with the agent enters an air flotation system, and S4, the wastewater enters the air flotation system. S4, enabling the clear liquid to enter a subsequent sedimentation tank or a filtering system under the control of the digital twinborn model, and judging whether an auxiliary flocculation or filtering step needs to be added or not by the AI system according to a simulation result of the twinborn model in combination with equipment operation parameters and real-time water quality data; s5, part of the wastewater enters an online water quality deep analysis module, and residual indexes are monitored. The self-adaptive AI control system is combined with a decision tree algorithm to analyze historical water quality data and recommend a treatment agent, so that a treatment strategy is automatically adjusted according to real-time water quality change in a wastewater treatment process, and an accurate and efficient wastewater treatment effect is obtained.

The utility model relates to a neutralization system and a waste liquid purification system, and belongs to the field of purification. A neutralization system comprises: a waste liquid assembly for storing and conveying waste liquid; the medicine adding assembly is used for conveying medicine and adjusting the pH value of the solution; the neutralizing device is communicated with the waste liquid assembly and receives the waste liquid conveyed by the waste liquid assembly, and the neutralizing device is communicated with the dosing assembly and receives the medicine conveyed by the dosing assembly. The utility model discloses a neutralization system which is used for a waste liquid purification system. Clear liquid and sediment are generated through chemical reaction in the neutralization device, the clear liquid can directly enter a subsequent purification link, and treatment steps and time cost are reduced; the precipitate can be further recycled, so that effective utilization of resources is realized.

The invention relates to the technical field of radiopharmaceutical preparations, in particular to yttrium [90Y] microsphere injection as well as a preparation method and application thereof. The preparation method of the yttrium [90Y] microsphere injection comprises the following steps: S1, uniformly mixing a radioactive stock solution and an yttrium sulfate solution, stirring and mixing with resin microspheres, and washing to obtain yttrium [90Y] microspheres; s2, stirring and mixing a sodium phosphate solution and the yttrium [90Y] microspheres, taking out 1 / 3 volume of clear liquid, carrying out suction filtration on the residual clear liquid, and mixing the taken clear liquid with the yttrium [90Y] microspheres to obtain mixed liquid; and S3, stirring and mixing the sodium dihydrogen phosphate solution and the mixed liquid, taking out 4 / 10 volume of clear liquid, carrying out suction filtration on the residual clear liquid, mixing the taken clear liquid with yttrium [90Y] microspheres, washing, filling and sealing, and sterilizing to obtain the yttrium [90Y] microsphere injection. The labeling rate of yttrium [90Y] in the produced yttrium [90Y] microsphere injection is high.

The invention relates to the field of drug-resistant bacterium infection, and discloses a g-C3N4 / Bi2Se3 nano heterojunction and a preparation method thereof.The preparation method comprises the steps that firstly, melamine powder is heated and calcined at the constant temperature, after a tubular furnace is naturally cooled, spark plasma sintering is conducted, nitrogen vacancies are introduced at the same time, and a blocky high-defect g-C3N4 material is obtained; grinding into powder, adding deionized water for ultrasonic treatment to obtain a first suspension, performing centrifugal treatment, freeze-drying the supernatant, and adding into an ethylene glycol solvent to obtain a second suspension; eG, polyvinylpyrrolidone, Bi (NO3) 3.5 H2O and Na2SeO3 are mixed and stirred, and the second turbid liquid is added; the preparation method comprises the following steps: adding Bi2Se3 into a reaction kettle, heating while stirring, adding a hydroxylamine EG solution, cooling to room temperature after reaction, centrifuging, washing, and carrying out vacuum drying on a precipitate to obtain a g-C3N4 / Bi2Se3 nano heterojunction; the problems that in the prior art, the catalytic efficiency is low, a collaborative mechanism does not achieve structure-function integrated design, the performance of a key functional material is limited, and the structural stability and biological suitability of the material are insufficient are solved.

The invention belongs to the technical field of oil and gas field development, and particularly relates to a comprehensive evaluation method for the gel breaking degree of gel fracturing fluid. According to the method, a calculation model of the integrity psi after gel breaking of the gel fracturing fluid is established on the basis of the mass of the residual gel separated after gel breaking or the mass of the gel breaking clear liquid in combination with the viscosity of the gel breaking clear liquid, and the gel breaking degree is quantified. According to the method, through weighted calculation of the residual colloid mass or the colloid breaking clear liquid mass and the colloid breaking clear liquid viscosity, a calculation model of the integrity psi after gel breaking of the gel fracturing fluid in different gel breaking stages is established, the gel breaking degree is quantified, and the problem that a traditional single viscosity index cannot be measured or measurement interferes is solved; the problems that the amount of dried solid residues is small, weighing is extremely inconvenient, and large errors are easily caused are solved. The method can adapt to the characteristic difference of different gel breaking stages, the evaluation reliability is remarkably improved, and data support is provided for optimizing the performance of the controlled-release gel breaker.

The invention relates to the technical field of environmental monitoring, in particular to a method for determining two organophosphate compounds in water. The two organic phosphate ester compounds are tri-(2, 3-dibromopropyl)-phosphate ester and xylenol phosphate ester; the method comprises the following steps: 1, putting a water sample to be detected into a centrifugal tube, adding sodium chloride, uniformly mixing, adding acetonitrile as an extracting agent, uniformly mixing by vortex, standing for layering, and filtering supernatant liquid by a needle filter to obtain liquid to be detected; 2, mixing the prepared tri-(2, 3-dibromopropyl)-phosphate standard intermediate solution with the prepared xylenol phosphate standard intermediate solution, and diluting with acetone to obtain a standard working solution; the to-be-detected liquid obtained in the first step is placed in a liquid chromatography-triple quadrupole mass spectrometry combined system to be analyzed; the method provided by the invention can realize simultaneous determination of tri-(2, 3-dibromopropyl)-phosphate and xylenol phosphate, and fills the blank of combined detection of two specific organophosphate compounds in the prior art.

Disclosed are a fluidized bed separation method and device for methanol-to-olefins quenched water. The method may subject quenched water to liquid-solid separation via a micro-cyclone separator. The method may also subject clear liquid from the micro-cyclone separator to a secondary separation via a fluidized bed separator, then sending the same to an olefin separation device, then recovering some waste heat of the quenched water, and then returning the same to a quenching tower after performing heat exchange. The method may also regenerate a separation medium by reversely feeding stripping tower purified water or quenched water, so as to release catalyst particles absorbed by the separation medium. The method may also send a catalyst slurry concentrated by the micro-cyclone separator and the fluidized bed separator to a filter-press unit for filter-press dehydration, so as to recover a catalyst.

The utility model relates to the technical field of liquid conveying treatment, and particularly discloses a clear liquid conveying device which comprises a buffer tank and a filter cartridge installed in the buffer tank, and one side of the buffer tank is connected with an output pipe; a clear liquid delivery pump is arranged on one side of the buffer tank, the liquid inlet end of the clear liquid delivery pump is connected with a supernatant extraction pipe, the liquid outlet end of the clear liquid delivery pump is connected with a delivery pipe, and the liquid outlet end of the delivery pipe corresponds to the liquid inlet end of the input pipe; the top of the buffer tank is rotationally connected with an adjusting ring, the adjusting ring is connected with a cross rod, and an input pipe is installed in the middle of the cross rod; the clear liquid conveying pump works to pump supernate, the driving mechanism drives the adjusting ring to rotate, the supernate is input into the filter cartridge, the cleaning roller can clean the inner wall of the filter cartridge, the supernate is filtered and then discharged between the buffer tank and the filter cartridge, and the adsorption rod can adsorb part of impurities. And the treated supernate can be output from the output pipe, so that the conveying of the supernate is completed, and the cyclic utilization of the extracted and conveyed supernate is facilitated.

A solid-liquid separation-type water treatment device capable of fluorescence detection. A motor (4) is fixedly connected to the center of the bottom of a transverse plate (1); a driving end of the motor (4) movably passes through the transverse plate (1) and is fixedly connected to a box body (41); a material suction mechanism (5) is mounted above the box body (41); a detection mechanism (6) is mounted at the front side of the box body (41); grooves (7) run through the interiors of a first stop plate (2) and a second stop plate (3); and two fixed pulleys (8) are fixedly connected to the top of each of the first stop plate (2) and the second stop plate (3). After a heavy metal in the box body (41) is precipitated, a clear liquid in the box body (41) can be continuously separated out by a filter membrane (595) by means of pressure filtration, in which case the clear liquid can be continuously pumped out by means of a water suction disc (593) so that the solid and the liquid in the box body (41) are separated, thereby improving the solid-liquid separation effect. Compared with conventional methods of pumping precipitates from the bottoms, this method avoids large-scale diffusion of the precipitate in the box body (41), can significantly reduce water pollution, and improves the cleanliness of pumped water resource.

The invention discloses a production process for preparing potassium sulfate from glauberite by an asymmetric balance method, which is characterized in that two asymmetries are designed, one is that an evaporation system adopts a mode of feeding more cold clear liquid and discharging more salt mother liquid, evaporation is carried out according to a fixed proportion, enough evaporation condensate water can be evaporated in unit time, and the evaporation efficiency is improved; the excessive part is used for digesting water from an external supplementing system; secondly, the secondary conversion reaction is a reaction of a potassium chloride solution and glauberite in an equal proportion, the glauberite containing the glauberite is matched with anhydrous sodium sulphate to produce potassium sulfate, and the core is that the potassium index of a primary conversion reaction system is controlled by using the proportion of the glauberite containing the glauberite, so that the production quantity of the glauberite is adjusted; the potassium sulfate is matched with the evaporation and condensation water amount consumed due to equal-proportion dissolution, so that the overall balance is maintained for production, and meanwhile, the quality of the prepared potassium sulfate meets the quality requirements of agricultural potassium sulfate national standard GB / T 20406-2017 powder crystalline superior products (K2O is greater than or equal to 52%) and first-grade products (K2O is greater than or equal to 50%).

The invention discloses a nicotinic acid immobilized enzyme conversion method, which comprises the following steps: taking wet thalli containing nitrilase, preparing a flocculation clear liquid, passing the flocculation clear liquid through an ultrafiltration membrane, carrying out embedding immobilization to obtain embedded particles not greater than 2mM, and after the embedded particles are hardened, separating and purifying the obtained conversion liquid by adopting a membrane separation method to obtain the nicotinic acid immobilized enzyme. Sequentially carrying out microfiltration, activated carbon decoloration, ultrafiltration, nanofiltration decoloration, acidification crystallization and centrifugation to finally obtain a nicotinic acid finished product. The immobilized enzyme prepared by the method disclosed by the invention can stably exist in nitrile substances, can be repeatedly used for many times, and is high in stability and low in enzyme activity loss rate, and a separated and purified product is free of impurities and high in yield.

The invention relates to the technical field of ergothioneine, in particular to a process method for extracting ergothioneine from pichia pastoris fermentation liquor, which comprises the following steps: taking the pichia pastoris fermentation liquor containing ergothioneine, detecting isoelectric points of the fermentation liquor and charges carried by small molecular substances, then adding corresponding flocculants according to the charges carried, adjusting the pH value to be equal to the isoelectric points, and finally extracting the ergothioneine from the pichia pastoris fermentation liquor containing ergothioneine. (diluting the obtained first turbid solution with water, then adjusting the pH value to be equal to an isoelectric point, treating the second clear solution collected after filtration with an ultrafiltration membrane, adjusting the pH value of the collected ultrafiltration clear solution to be acidic, passing through a cationic resin column, eluting with an eluent, concentrating the collected eluent with a nanofiltration membrane, concentrating in vacuum, cooling, carrying out suction filtration, and washing to obtain the product. And drying to obtain the ergothioneine product with high yield and high purity.

A concentrated water barrel adopts a barrel-shaped tank body, the bottom of the barrel-shaped tank body is funnel-shaped, a drain outlet is formed in the bottom end of the barrel-shaped tank body, and a liquid inlet and a clear water inlet are formed in the top of the barrel-shaped tank body; the liquid inlet is used for injecting dirty liquid or concentrated liquid to be treated, and the clean water inlet is used for injecting cleaning liquid; a clear liquid outlet is formed in the side wall of the cylindrical tank body, the fixed end of a hose is communicated and fixed to the clear liquid outlet in the side wall, a water inlet is formed in the free end of the hose, a floating body is arranged at the free end of the hose, so that the water inlet of the hose always floats below the liquid level, and the hose can extract supernate in the tank under the action of the extraction force of an external concentrated liquid pump. According to the device, flushing liquid, concentrated liquid, sludge liquid and the like in various tail water and tail gas purification fields can be better received, the design of the hose and the floating body better realizes extraction of supernate, and the working efficiency of subsequent devices for sludge dewatering and the like is improved.

The utility model discloses a feed pipe for disc type separator and disc type separator, its feed pipe includes pipe body, annular edgefold, sealing pad and installation subassembly, the pipe body is provided with annular edgefold, the sealing pad is installed on the upper end face or lower end face of annular edgefold through the installation subassembly. The bottom of the feeding pipe is sealed, a feeding hole is formed in the side face and serves as the discharging direction of the feeding pipe, fed materials can directly enter a liquid pool, foam generation is reduced, meanwhile, the rotary drum body and the distributor are driven by the vertical shaft to rotate at a high speed, sealing is generated between the sealing gasket and the distributor, and generated foam is difficult to turn upwards. Materials enter the discs to be separated through the feeding holes of the distributor, and separated clear liquid is pumped out of the separator through the centripetal pump. Through the feeding pipe, materials can be effectively prevented from turning over from the center of the distributor, and the separation effect of the disc type separator is improved.

The invention provides a method for preparing hydroxyapatite from solid waste through an ammonia-alkali method, and belongs to the field of solid waste resource comprehensive utilization and inorganic material synthesis. The method comprises the following steps: firstly, preparing slurry from solid waste ammonia distillation waste clear liquid of an ammonia-alkali process and alkali residues, reacting with concentrated hydrochloric acid, then adding a calcium-containing alkaline solid substance to adjust the pH value, removing impurities and thickening to obtain a calcium chloride solution with the concentration of 25.08-32.02%; the preparation method comprises the following steps: adding hydroxyapatite seed crystals, a crystallization inducer and a crystal extraction agent, finally reacting with a phosphate trisalt solution, and cleaning and purifying to prepare the hydroxyapatite with high yield (greater than 99%) and high purity (greater than or equal to 99%). According to the method, the resource utilization rate is remarkably increased, the utilization rate of the alkaline residues reaches 85.01-87.00%, and the extraction rate of effective components exceeds 96.60%. And meanwhile, the total discharge amount of the alkaline residues is greatly reduced, the reutilization of the distilled ammonia waste clear liquid and the rapid preparation of the hydroxyapatite are realized, and the added value of the product is improved.

The present application relates to a kind of carbon dioxide mineralization method and carbon dioxide mineralization device.The carbon dioxide mineralization method includes the following steps: mixing absorption liquid and industrial solid waste at room temperature, obtain mortar;Make mortar solid-liquid separation, obtain clear liquid and thick slurry;Carbon dioxide in flue gas is absorbed by clear liquid, obtain carbon-rich absorption liquid;Carbon-rich absorption liquid and thick slurry occur mineralization reaction at 180 DEG C-220 DEG C, obtain mineralized slurry;Make mineralized slurry solid-liquid separation, obtain mineralized ash and mineralized clear liquid;Wherein, absorption liquid includes inorganic base and organic base, organic base includes monoethanolamine, diethanolamine, triethanolamine, 3-methylaminopropylamine, N-methyl diethanolamine, piperazine, diethylene triamine, triethylene tetramine, tetraethylene pentamine and 2-amino-2-methyl-1-propanolamine at least two kinds.The method greatly improves CO2 capture rate and CO2 utilization rate, and organic base consumption is less, absorption liquid regeneration energy consumption is low, and overall economy is good.

The invention relates to the technical field of monopotassium phosphate production, and discloses a monopotassium phosphate solution purification method and a device thereof.The monopotassium phosphate solution purification method comprises the following steps that S1, a potassium fluoride solution is tempered, S2, activated carbon decoloration is conducted, S3, filter pressing and impurity removal are conducted, S4, heat treatment and sedimentation are conducted, filtrate is heated to 95-105 DEG C and then fed into a heat sedimentation tank for sedimentation separation, and clear liquid overflows to enter a subsequent concentration procedure; the potassium fluoride solution is used for carrying out hardening and tempering reaction, so that calcium and magnesium ions are effectively removed; and adding a small amount of active carbon for decoloration. The treated solution is subjected to filter pressing to remove impurities, and then the steam consumption is remarkably reduced through the closed and pressurized heat treatment and sedimentation process. The process is high in automation degree and low in production cost, and the purity of the final product is superior to the industrial superior product standard.

The present invention belongs to the field of soybean by-product processing and discloses a method for preparing high-quality transparent soybean lecithin, comprising the following steps: (1) a dual solvent system 1: dissolving soybean lecithin in a non-polar solvent, then adding a certain amount of monohydric alcohol aqueous solution and stirring to obtain a mixed solution 1; (2) centrifuging the mixed solution 1 to remove impurities and collecting the upper non-polar solvent clear liquid; (3) a dual solvent system 2: adding a certain amount of polyol to the collected upper non-polar solvent clear liquid and stirring to obtain a mixed solution 2; (4) centrifuging the mixed solution 2 to remove impurities and water, collecting the upper non-polar solvent clear liquid, and recovering the non-polar solvent to obtain transparent soybean lecithin. The method disclosed in the present invention has the advantages of simple process, low equipment requirements, and solvent recyclability. The prepared soybean lecithin has extremely high transparency and good fluidity, and no substances such as proteins and polysaccharides that affect the transparency of the soybean lecithin are detected.

The invention relates to the technical field of sodium sulfide preparation, in particular to a method for preparing anhydrous flaky sodium sulfide from industrial waste salt containing sodium sulfate. Comprising the following steps: S1, crushing coke, grinding and proportioning; s2, roasting to generate a slurry-shaped sodium sulfide semi-finished product; s3, thermalization: carrying out thermalization leaching on the sodium sulfide semi-finished product obtained in S2 to obtain a sodium sulfide solution; s4, clarifying and filtering: clarifying and filtering the sodium sulfide solution in S3 to obtain sodium sulfide clear liquid; s5, evaporation and concentration: pumping the sodium sulfide clear liquid obtained in S4 into evaporation and concentration equipment to obtain sodium sulfide refined brine; s6, cooling crystallization: cooling and crystallizing the sodium sulfide refined brine solution obtained in S5 in crystallization equipment while stirring to obtain crystal grains; s7, centrifugal separation: carrying out solid-liquid separation on the crystal grains obtained in the step S6 by utilizing a centrifugal machine; and S8, drying, screening and packaging: drying the sodium sulfide crystal grains separated in the S7 by using a drying machine, screening after drying, and feeding into a packaging machine to prepare the anhydrous flaky sodium sulfide.

This disclosure provides a highly efficient reaction vessel and relates to a technology for the production of ternary precursors. The highly efficient reaction vessel includes a vessel body for containing a slurry; a guide cylinder fixed to the top of the vessel body and extending downward, with a first flow port formed at the bottom of the guide cylinder and a second flow port formed on the upper side wall of the guide cylinder; a plurality of feed pipes, the openings of which at least a portion of the feed pipes are installed inside the guide cylinder; an agitator drilled inside the guide cylinder and exiting from the first flow port of the guide cylinder, which drives the slurry to move downward within the guide cylinder and drives the slurry to move around the vessel body at the bottom of the vessel body; a baffle installed on the inner wall of the vessel body and extending in the height direction of the vessel body; and a solid-liquid separator installed at the top of the vessel body and located outside the guide cylinder, which draws clear liquid from the slurry out of the vessel body. This reaction vessel can improve productivity and improve product quality.

The utility model relates to the technical field of ergothioneine production, in particular to a production system for extracting ergothioneine from pichia pastoris fermentation liquor, which comprises a first buffer kettle, a flocculant storage tank, a first filtering device, a first clear liquid storage tank, a second buffer kettle, a second filtering device and a second clear liquid storage tank which are communicated with a fermentation liquor conveying pipeline, a discharge port of the first clear liquid storage tank and a discharge port of the second clear liquid storage tank are communicated with a mixing tank, a discharge port of the mixing tank is communicated with a third filtering device, a third buffer kettle, a cationic resin column, first concentration equipment and second concentration equipment, a concentrated solution outlet of the second concentration equipment is communicated with a crystallization kettle, and a crystal outlet of the crystallization kettle is communicated with a washing tank. A discharge hole of the washing tank is communicated with the drying device; and a discharge hole of the drying device is communicated with the product storage tank. The production system is reasonable in design, effective extraction of the ergothioneine in the pichia pastoris fermentation liquor is achieved, and the yield and purity of the ergothioneine product are greatly improved.

The invention discloses a treatment method of fruit and vegetable beverage production wastewater, and belongs to the field of water treatment.The treatment method comprises the steps that S0, cyanide-containing ions in raw water are oxidized to remove the cyanide-containing ions in the raw water, and cyanide-free water is formed; the method comprises the following steps: S1, extruding cyanide-free water by a screw extruder, and carrying out solid-liquid separation to form by-product pomace and filtrate; s2, the filtrate enters an alkali neutralization container to be neutralized until the pH is 6.5-7.5; s4, treating the neutralized solution in an EGSB (expanded granular sludge bed) reactor to form first treated water; s5, the first treated water enters an MEC device to be treated, and then second treated water is formed; s6, the second treated water enters an acidification container to be acidified until the pH value is 2.5-3.5, and acidizing fluid is formed; s7, performing electro-Fenton reaction treatment on the acidizing fluid to form Fenton water; and S8, Fenton water precipitation solid-liquid separation, wherein the clear liquid is discharged as up-to-standard discharge water. The method is specially suitable for treating wastewater generated in the apple juice production process of an apple juice production enterprise.

The present application relates to biomass high-value utilization technical field, more specifically to a kind of papermaking by-product black liquor high-value water phase preparation lignin amine cationic surfactant method, comprising the following steps: pulping black liquor is adjusted pH with acid or alkali, centrifugal to take upper clear liquid, add epoxy chloropropane, temperature is raised to certain temperature and is reacted for 30min.Then, add amine reagent and react for a certain time, after cooling, centrifugal, wash after the lower layer precipitate is dried to obtain lignin amine cationic surfactant.The present application not only can make papermaking by-product black liquor waste into treasure-high-value water phase synthesis lignin amine cationic surfactant, and the preparation process of the lignin amine cationic surfactant is simple, energy consumption is low, the whole process is green, no waste water discharge, without black liquor purification, without adding formaldehyde, also without alkali recovery;Easy to realize industrial production, with broad market prospect.