766 results about "Clear liquid" patented technology

The invention discloses a slag-containing feed liquid clarification device and a slag-containing feed liquid treatment system, a driving unit of the device is located above a cover plate, a centrifugal unit is located below the cover plate, and the driving unit is connected with the centrifugal unit through a transmission shaft unit and used for driving the centrifugal unit to rotate. A cavity is formed in the centrifugal unit, an outflow opening is formed in the lower end of the cavity, the feeding unit is located below the cover plate and communicates with the cavity of the centrifugal unit, the feeding unit is used for conveying slag-containing feed liquid into the cavity of the centrifugal unit, and when the centrifugal unit rotates, clear liquid and slag can be separated, the slag is attached to the side wall of the cavity, and the centrifugal unit is arranged in the cavity of the centrifugal unit. And clear liquid is discharged from an outflow port at the lower end. The device can be used for clarifying radioactive slag-containing feed liquid.

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 relates to the technical field of medicines, in particular to a preparation method of fine-particle budesonide crystals, which comprises the following steps: (1) mixing budesonide with ethanol, heating and stirring until budesonide is completely dissolved to obtain a dissolved clear solution; (2) adding the dissolved clear liquid into rapidly stirred purified water, and rapidly stirring at 0-20 DEG C for 10-60 minutes; and (3) stopping stirring, filtering, and drying to obtain a budesonide product with the granularity D95 being less than or equal to 5 microns. The invention aims to provide a method for directly obtaining a budesonide raw material with a small particle size through recrystallization without crushing. Meanwhile, the budesonide raw material prepared by the method is not easy to coat a solvent, and the solvent residue meets the standard.

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 invention provides a lily polysaccharide extraction method, and belongs to the technical field of polysaccharide extraction, the extraction method comprises lily pretreatment, crude polysaccharide extraction, protein adsorbent preparation, and refined polysaccharide preparation; the method for preparing the refined polysaccharide comprises the following steps: dissolving crude polysaccharide in ultrapure water, heating in a water bath to 30-50 DEG C, adding a protein adsorbent, stirring and adsorbing for 45-55 minutes, centrifuging for 2.5-3.5 minutes, standing, taking supernate, adding an ethanol solution which is 2.5-3.5 times of the volume of the supernate, standing for 16-20 hours, filtering, washing with absolute ethyl alcohol, and drying to obtain the refined polysaccharide, namely the lily polysaccharide. According to the extraction method of the lily polysaccharide, disclosed by the invention, the yield of the crude lily polysaccharide reaches 21.97 to 22.69 percent; the loss rate of the lily polysaccharide is 4.63 to 5.04 percent; the protein removal rate is up to 63.48 to 67.53 percent, and the purity of the refined polysaccharide is up to 95.73 to 96.18 percent.

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 discloses a method for detecting moisture of filler-containing epoxy resin. The method comprises the following steps: step 1, weighing a sample: weighing 4-8g of filler-type epoxy resin to be detected; 2, dissolving a sample: adding 10-20g of an organic solvent, and dissolving and mixing the filler type epoxy resin to be detected; 3, sample dispersion: stirring the mixed solution in the step 2 for 10-30 minutes for uniform dispersion; step 4, extracting clear liquid: putting the solution which is uniformly dispersed in the step 3 into a high-speed centrifugal machine to be centrifugally dispersed for 30 to 60 minutes, and extracting supernate; 5, moisture detection, wherein the content of trace moisture in the supernate is detected. In the detection process, components influencing moisture detection result errors in the filler type epoxy resin are effectively removed only by using a balance, a magnetic stirrer, a centrifugal machine and other instruments commonly used in a laboratory, and then the moisture content in supernate is detected through a high-precision analysis instrument, so that the purpose of detecting the trace moisture content in the filler type epoxy resin is achieved. The detection process is easy to operate and the detection result is accurate.

The preparation method comprises the steps that firstly, a carbon source and a nitrogen source are stirred and mixed to be uniform, alkylamine polyoxyethylene ether is added into the mixture under the water bath heating condition, the mixture is sealed and stirred to form a light yellow block, then a solid-phase pyrolytic reaction is conducted, and a black solid product is obtained; grinding the black solid product, dispersing in n-hexane, and washing; and adding absolute ethyl alcohol and further washing by combining ultrasonic waves to obtain a black powdery product. Dissolving the product in deionized water, filtering and purifying, and carrying out centrifugal separation on the obtained black liquid; dialyzing the clear liquid, and finally drying the solution in a dialysis bag to obtain the nitrogen-doped quantum dots. Preparing nitrogen-doped quantum dot dispersion liquid by using on-site injection fluid; and injecting the dispersion liquid into a target reservoir, soaking for 1-2 days, and then opening the well for production. The nitrogen-doped quantum dots are suitable for low-permeability (ultra-low permeability) oil reservoirs, compact oil reservoirs and shale oil reservoirs, and the recovery efficiency of crude oil is economically and efficiently improved.

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 discloses gas-liquid-solid three-phase integrated separation equipment capable of back flushing, which relates to the technical field of gas-liquid-solid three-phase separation equipment and comprises a shell, and the interior of the shell is divided into a gas-liquid-solid three-phase region, a gas-liquid two-phase region and a gas-phase region by a filter element assembly supporting plate and a partition plate system; a filter element assembly supporting plate is arranged in the gas-liquid-solid three-phase area, and a plurality of filter element assemblies are arranged on the filter element assembly supporting plate in an array manner; a plurality of labyrinth type baffling blade assemblies are arranged in the gas-liquid two-phase area; a feeding hole, a clear liquid outlet and a back flushing hole are formed in the outer wall of the shell; and a clean gas outlet is formed in the top of the gas phase region. The technical problem that gas-liquid-solid three-phase separation equipment cannot effectively separate liquid entrainment carried in gas is solved. When gas passes through the inside of the labyrinth type baffling blade assembly, liquid entrainment carried in the gas is disordered, collided and gathered into liquid drops on the labyrinth type baffling blades along with the gas, the liquid drops converge and enter the rectangular liquid accumulation frame, and effective separation of the gas and the liquid entrainment is achieved.

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 belongs to the technical field of sulfuration arsenic removal treatment of waste acid and sewage, and discloses a continuous sulfuration treatment method of high-concentration arsenic-containing waste acid. The method specifically comprises the following steps: pumping high-arsenic liquid into a harm removal tower 1 to spray tail gas, mixing the sprayed high-arsenic liquid with waste acid clear liquid according to a ratio, pumping the mixture into a gas-liquid intensifier 1, introducing hydrogen sulfide gas to react with the mixture to generate sulfurized slag, and continuously reacting gas and liquid into a gas-liquid intensifier 2 to prolong the reaction time; and finally, solid-liquid is treated by a thickener and a filter press to realize solid-liquid separation, and waste acid clear liquid with arsenic content below 50mg / L is obtained. According to the invention, the continuous vulcanization treatment of the waste acid with the arsenic content of more than 20000 mg / L can be realized, and the waste acid clear liquid with the arsenic content of less than 50 mg / L is obtained.

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 utility model discloses a slag slurry treatment system, which belongs to the technical field of slag slurry treatment in polycrystalline silicon production and comprises a transfer tank, a cryogenic stirring tank I, a coarse filter I, a fine filter I and a high-boiling-off tower which are sequentially connected, and the top of the high-boiling-off tower is connected with a cooler and then connected with a product liquid storage tank; the bottom of the high-boiling removal tower is sequentially connected with a cooling stirring tank, a cryogenic stirring tank II, a coarse filter II and a fine filter II through pipelines, a clear liquid outlet of the fine filter II is connected with a feeding hole of the high-boiling cracking device through a pipeline, and a light component outlet in the top of the high-boiling cracking device is connected with a material inlet of the high-boiling removal tower through a pipeline I; a slag discharging opening I in the bottom of the fine filter I is connected with a feeding opening I of the cryogenic stirring tank I through a pipeline II. The problems that in the prior art, when an evaporator or / and rotary drum equipment is / are adopted for treating slag generated in the cold hydrogenation process, the number of related equipment is large, pipelines are complex, the overhaul difficulty is large, and the silane recovery rate is low are solved.

The invention relates to a centrifugal sewage separation device which comprises an outer shell, the outer shell is transversely placed and comprises an oblique cone, a rear body and a connecting pipe body, the oblique cone is in a cone barrel shape, the rear body is in a volute shape, the large-area end of the oblique cone is communicated with the end of the rear body, and the small-area end of the oblique cone is communicated with the connecting pipe body; the sewage input pipe is communicated with the side wall of the connecting pipe body; the mud pipe is located below the rear body and communicated with the side face of the end, away from the oblique cone, of the rear body through a buffer pipe. The driving motor is mounted at one end of the rear body away from the oblique cone, an output shaft of the driving motor is coaxially and fixedly connected with a rotating shaft, a rotating disc is arranged at the end of the rotating shaft, and a plurality of impellers are circumferentially arranged at equal intervals at one end of the rotating disc close to the oblique cone; the clear liquid outlet pipe is inserted into the outer shell from the end, away from the inclined cone, of the connecting pipe body, and the clear liquid outlet pipe penetrating into the outer shell is located in the middle of the impellers. Impurities in the sewage can be conveniently separated from water.

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.

The invention relates to the technical field of sewage treatment, in particular to an intelligent partition treatment sewage pool which comprises a sewage treatment pool, an electric guide rail and the like. A pre-storage area is arranged in the sewage treatment tank; a reaction area is arranged in the sewage treatment tank, and an aeration pipeline is arranged at the bottom of the reaction area; and two electric guide rails are fixedly connected to the reaction area. A water inlet is immersed in water, clear liquid sequentially penetrates through the water inlet, a through opening and a second filter screen and is finally discharged through a drainage branch pipe and a drainage pipe, the second filter screen intercepts suspended matter impurities, the quality of the clear liquid is ensured, a connecting frame and a shell move downwards at a constant speed, water is continuously taken from the surface layer of the water surface, and disturbance of lower-layer sludge is avoided; suspended matter impurities in the clear liquid can be intercepted through the second filter screen, so that the situation that the suspended matter impurities are mixed into the clear liquid and discharged together, and the water body quality of the clear liquid is affected is avoided.