385 results about "Clear liquid" patented technology

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 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 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 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 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 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.

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 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.

The cyclone hydraulic separator comprises a first shell, a liquid inlet is formed in one end of the first shell, a second shell integrally formed with the first shell is arranged at the end, far away from the liquid inlet, of the first shell, a clear liquid outlet is formed in the side, far away from the first shell, of the second shell, a mounting seat is arranged in the first shell, and a liquid outlet is formed in the mounting seat. And the mounting seat is provided with a liquid penetrating opening and a centrifugal assembly. According to the cyclone hydraulic separator, suspension liquid is introduced into the first shell from the liquid inlet, solid particles or liquid with large density in the suspension liquid are thrown to the inner wall of the first shell and the inner wall of the second shell under the action of centrifugal force through the arranged centrifugal assembly, and the solid particles or the liquid with the large density in the suspension liquid are thrown to the inner wall of the first shell and the inner wall of the second shell along with liquid flowing and the action of the centrifugal force. And solid particles or liquid with large density in the suspension liquid enter the waste liquid box along the inner wall of the second shell, backflow of fine particles is reduced through the arranged enclosure, and the separation efficiency is improved.

This invention relates to the field of wastewater treatment technology, specifically a treatment process and apparatus for high-concentration organic wastewater containing oil and slag; it includes an oil extraction machine; the oil extraction machine includes a tank and a support at the bottom of the tank; a central column is fixedly connected to the center of the tank; a first half-pipe and a second half-pipe are fixedly connected to the lower part of the arc-shaped outer wall of the central column; one end of the first half-pipe and the second half-pipe are adjacent and communicate with the inside of the tank; the other end of the first half-pipe is connected to the bottom of the tank; the other end of the first half-pipe is connected to an air pump on the outside of the tank; this invention balances the number of spiral plate turns between the rotor and the first half-pipe based on the fiber and oil droplet content in the clear liquid, so that the path length of the spiral flow channel is adapted to the state of the clear liquid, thereby improving the treatment efficiency while ensuring the removal effect of fibers and oil droplets in the clear liquid; in addition, this invention can also reduce the overall height of the oil extraction machine, making it easier to transport.

The invention relates to a method for detecting primary metabolites and / or secondary metabolites in flavors and fragrances, which comprises the following steps: (1) mixing flavors and fragrances, an internal standard substance and a solvent, extracting, taking clear liquid, and removing the solvent to obtain a dry product; (2) mixing the dry product, an oximation reagent and a solvent for an oximation reaction, and then mixing a reaction system and a silanization reagent for a silanization reaction to obtain a solution to be detected; the silanization reagent comprises a combination of N-methyl-N-(trimethylsilyl) trifluoroacetamide and N, O-bis (trimethylsilyl) trifluoroacetamide, and the silanization reagent comprises N-methyl-N-(trimethylsilyl) trifluoroacetamide and N, O-bis (trimethylsilyl) trifluoroacetamide; and (3) detecting the solution to be detected by adopting a gas chromatography-mass spectrometry method, and obtaining the content of primary metabolites and / or secondary metabolites in the flavors and fragrances by utilizing an internal standard method. According to the method provided by the invention, the flavors and fragrances are subjected to oximation and silanization treatment, and then the flavors and fragrances are detected by using the gas chromatography-mass spectrometry, so that the metabolites contained in the flavors and fragrances can be precisely and accurately detected.

The invention discloses a method for preparing fructose 1, 6-diphosphate, which comprises the following steps of: inoculating saccharomycetes into a culture medium, reacting by taking glucose as a substrate, and carrying out solid-liquid separation, clear liquid collection, ultrafiltration, permeate collection, nanofiltration, trapped fluid collection and drying on the obtained reaction liquid to obtain the fructose 1, 6-diphosphate, wherein the culture medium contains aldehyde compounds. When the method is used for producing the FDP, the single-batch catalytic yield is increased from 60g / L to 85g / L.

The invention discloses a process for reducing rare earth loss in value adjustment of phosphorus-containing rare earth feed liquid by using an iron phosphorus removal and segmented value adjustment method, and belongs to the field of rare earth hydrometallurgy. The process comprises the following steps: preparing iron, heating, adding carbon for material settling, controlling REO concentration, performing primary value adjustment, performing solid-liquid separation, performing secondary value adjustment and performing solid-liquid separation again. The method comprises the following steps: adding an iron material of which the stoichiometric ratio is 1-2 times that of a phosphorus-containing rare earth feed liquid into the phosphorus-containing rare earth feed liquid, raising the temperature to 50 DEG C or above, adding a carbon precipitation material to regulate the acidity to 0.1-0.6 mol / L, controlling REO to be less than or equal to 200g / L, regulating the pH to 0.5-2, carrying out primary phosphorus removal, separating to obtain iron phosphate slag with low rare earth content, and regulating the pH of clear liquid to 4-5 to further remove impurities; according to the method, the rare earth content in the value-adjusted slag is remarkably reduced, the dry basis CeO content of the primary value-adjusted slag can be as low as 1.61%, the rare earth yield is increased, the occupied area of a slag warehouse is reduced, recycling of phosphorus resources is achieved, and the production cost is reduced.

The utility model discloses a reverse osmosis concentrated water oxidation mechanism, which belongs to the technical field of water treatment.The reverse osmosis concentrated water oxidation mechanism comprises a fixed tank, a liquid inlet pipe is fixedly connected to the top of the fixed tank, a pretreatment tank is fixedly connected to the position, close to the top, of the interior of the fixed tank, and a connecting pipe is fixedly connected to the bottom of the pretreatment tank; one end of the connecting pipe is fixedly connected with a fixed tank, the other end of the connecting pipe is fixedly connected with a reaction tank, a stirring assembly is arranged at the position, close to the center, of the top of the reaction tank, the top of the reaction tank is provided with an aeration mechanism, the outer wall of the reaction tank is fixedly connected with a clear liquid pipe, and a liquid storage tank is installed in the fixed tank. The air compressor and the aeration disc are utilized to generate a large number of bubbles in the reaction tank, the large number of bubbles can drive a reagent to continuously rise in the reaction tank, and liquid in the reaction tank is stirred, so that concentrated liquid and the reagent are more fully fused and reacted, and the treatment efficiency of concentrated water is improved.

The utility model discloses a two-stage thickening kettle which comprises a salt collecting hopper with a salt discharge port at the bottom, the top of the salt collecting hopper is connected with a barrel, an overflow flow guide weir is arranged at the top of the barrel, an overflow liquid discharge port is formed in the side direction of the overflow flow guide weir, a top cover is arranged above the overflow flow guide weir, and the salt collecting hopper, the barrel and the top cover are all hermetically connected to form a closed cavity; the two-stage thickening kettle further comprises a cyclone separator connected with the closed cavity in a sealed mode, a feeding port and a clear liquid outlet of the cyclone separator are both located outside the barrel, a heavy liquid outlet of the cyclone separator is located in the middle of the barrel, and the clear liquid outlet is provided with a valve. Through the coupling design of the cyclone separator and the closed cavity, the synergistic effect of first-stage hydraulic cyclone coarse separation and second-stage gravity settling fine separation is achieved. When the feed liquid treatment capacity is large and the feed concentration is low, the cyclone separator can pre-concentrate the low-concentration feed and discharge the clear liquid out of the system in advance, so that the subsequent treatment load is reduced.

The application discloses a preparation method of yellow rice wine, the yellow rice wine and application. The preparation method of the yellow rice wine comprises the following steps: gelatinizing starch raw materials to prepare gelatinized starch; uniformly mixing the gelatinized starch, yellow rice wine starter, acidic protease, saccharomyces cerevisiae, yellow rice wine and water to prepare fermentation material, and performing fermentation; adding lactic acid bacteria at 72h-74h of fermentation, and continuing fermentation; and performing solid-liquid separation after the fermentation is completed, collecting clear liquid, decocting wine, aging, and preparing the yellow rice wine. The preparation method of the yellow rice wine breaks through the technical bottleneck that the metabolic time sequence of strains is uncontrollable in traditional mixed fermentation, optimizes the inoculation time of lactic acid bacteria, guarantees the acid production capacity of lactic acid bacteria under the condition of controlling alcohol metabolism, and obtains the yellow rice wine with the characteristics of high sugar, high acid and high ester, which can be used for seasoning.

This utility model belongs to the technical field of MVR evaporators, specifically relating to an MVR evaporation crystallization device. It includes: a forced circulation system, a hydrocyclone, a thickener, and a centrifuge. In the forced circulation system, material sequentially enters a first heater, a circulation pump, a second heater, and a separator through circulation pipes, then returns to the first heater, forming a cycle. The circulation pipes are connected to a feed pump and a discharge pump. The hydrocyclone inlet is connected to the output end of the discharge pump. The hydrocyclone overflow outlet and underflow outlet are respectively connected to a mother liquor tank and a thickener. The thickener's clear liquid overflow outlet and crystal slurry outlet are respectively connected to the mother liquor tank and the centrifuge. The centrifuge's liquid outlet and solid outlet are connected to the mother liquor tank and the outside environment. This utility model achieves equipment compactness through skid-mounted integrated design and process optimization; by using the hydrocyclone for low-concentration material intake, the thickener does not require a large buffer space, further saving space.

This invention relates to the field of natural gas drilling water-based solid waste treatment technology, and discloses a solid-liquid separation method and system for high water-content water-based drilling solid waste. The solid-liquid separation method includes the following steps: Step A. Micro-vibration particle agglomeration; Step B. Micro-adsorption solid-liquid separation; Step C. Dynamic filtration; Step D. Clear liquid collection; Step E. Solid removal; Step F. Solid waste collection and transportation. The solid-liquid separation process of this invention does not add any treatment agents, the clear liquid obtained after treatment will not adversely affect the preparation of drilling fluid, and the total amount of pollutants in the solid waste will not increase after treatment, enabling continuous treatment of high water-content water-based drilling solid waste.

The present application relates to the technical field of cutting fluid filtration, and in particular to a cutting fluid centrifugal separation device, comprising a centrifugal cylinder, a liquid pumping pipe and a liquid feeding pipe; the cylinder wall of the centrifugal cylinder is provided with a plurality of slag discharge ports, and each slag discharge port is provided with a sealing plate; the sealing plate is further provided with a driving mechanism for driving the opening and closing of the slag discharge port; the liquid pumping pipe is inserted into the inside of the centrifugal cylinder and located below the liquid level of the clear liquid during centrifugation; and the liquid feeding pipe is inserted into the bottom of the centrifugal cylinder. The core structure of the centrifugal cylinder, the liquid pumping pipe and the liquid feeding pipe works cooperatively, the liquid feeding pipe continuously feeds the cutting fluid to be filtered, the centrifugal cylinder rotates at high speed to generate centrifugal force to throw the solid impurities to the cylinder wall for deposition, the liquid pumping pipe accurately pumps the clear liquid for recycling, and the driving mechanism controls the opening and closing of the sealing plate and the slag discharge port, so that the slag discharge process does not need to stop, and the core pain points of the existing device, such as production interruption and efficiency reduction caused by stopping for slag cleaning, are fundamentally solved.

The utility model belongs to the technical field of organic silicon slurry and slag type hazardous waste pretreatment, and particularly relates to an organic silicon slurry and slag type hazardous waste pretreatment device which comprises a mixing barrel, a connecting pipe fixedly installed at the bottom of the mixing barrel, a first valve rotationally installed on the connecting pipe, and a separation box fixedly installed at one end of the connecting pipe. The mixing device comprises a mixing barrel, a scraping plate is rotatably mounted in the mixing barrel, a plurality of stirring rods are fixedly mounted in the scraping plate, and a sealing cover is fixedly mounted at the top of the mixing barrel through a plurality of bolts. Through the arrangement of the connecting pipe, materials adhered to the inner wall of the mixing barrel can enter the separating box through the connecting pipe, the situation that the materials remain on the inner wall of the mixing barrel and influence the next mixing quality is avoided, the materials can be filtered, precipitates and clear liquid are separated in a filtering mode, and waiting for precipitation is not needed; and the progress of the next procedure is prevented from being influenced.

The utility model discloses a multi-pipe modularized closed slurry filtering device which comprises a slurry filtering closed shell, a plurality of filtering module supporting pipes which are horizontally arranged are arranged in the slurry filtering closed shell, and a plurality of slurry filtering plates which are communicated inside and outside are arranged on the side walls of the filtering module supporting pipes; a plurality of clear liquid discharging pipes are fixed to the outer side wall of the slurry filtering closed shell, the ends, extending into the slurry filtering closed shell, of the clear liquid discharging pipes are sleeved with end closed restraining pipes, and the multiple filtering module supporting pipes are coaxially arranged in the end closed restraining pipes in a one-to-one correspondence mode and communicate with the clear liquid discharging pipes; the multiple filter module supporting pipes are integrated and combined together, a large amount of slurry can be filtered at the same time, the multiple filter module supporting pipes can work in parallel, and compared with single-pipe filter equipment, more slurry can be treated in unit time.

The invention relates to a preparation method of an immunity-enhancing eel bone peptide composition, and belongs to the technical field of biological extraction. Comprising the following steps: a) pretreatment: sequentially performing low-temperature freeze-drying on eel aggregate, crushing the eel aggregate to 200 meshes or below, degreasing the eel aggregate with ethanol, and performing acid-process deliming to obtain pretreated aggregate; b) three-stage composite enzymatic hydrolysis: performing three-stage composite enzymatic hydrolysis on the pretreated aggregate to obtain enzymatic hydrolysate; c) enzyme deactivation and centrifugation: performing enzyme deactivation on the enzymatic hydrolysate, performing centrifugal separation, and removing insoluble substances to obtain clear liquid; d) ultrafiltration separation: performing ultrafiltration separation on the clear liquid to remove macromolecular impurities so as to obtain a collagen peptide concentrated solution; and e) debitterizing, deodorizing and drying: debitterizing and deodorizing the collagen peptide concentrated solution, and drying to obtain eel bone collagen peptide powder. The fishy smell and bitter taste are effectively removed, and the biological activity, purity and palatability of the product are remarkably improved.

A system and method for separating aluminum trichloride from cold-hydrogenated silicon tetrachloride includes a pressure-reducing tank, a condenser, a first extraction tank, a second extraction tank, a clear liquid filter, and a clear liquid tank. The system is characterized by: a silicon tetrachloride inlet pipe at the top of the pressure-reducing tank; the bottom of the pressure-reducing tank being connected to the first and second extraction tanks via pipes; the bottoms of the first and second extraction tanks being connected to a dryer via pipes; the side walls of the first and second extraction tanks being connected to the clear liquid filter via pipes; the tops of the first and second extraction tanks being connected to the condenser via pipes; the bottom of the condenser having a liquid outlet pipe connected to the top of the clear liquid tank; and the bottom of the clear liquid tank having a silicon tetrachloride recovery pipe; and the clear liquid filter being connected to the liquid outlet pipe via a pipe. This invention improves the clogging situation of the entire cold hydrogenation system, solves the problem of long-term operation of the cold hydrogenation system, and reduces the equipment failure rate.

The utility model discloses a waste liquid treatment device and a circulating system, and belongs to the technical field of waste liquid treatment.The waste liquid treatment device comprises a filtering piece, a first liquid inlet, a first liquid outlet and a second liquid outlet, and the first liquid inlet is used for introducing waste liquid; the filter pressing piece is provided with a second liquid inlet and a third liquid outlet, and the second liquid inlet is communicated with the first liquid outlet; the first storage part is provided with a third liquid inlet and a fourth liquid inlet, the third liquid inlet is communicated with the second liquid outlet, and the fourth liquid inlet is communicated with the third liquid outlet. Waste liquid can be filtered through the filtering piece, more clear liquid can be obtained, the filtering efficiency is high, then concentrated liquid generated after filtering of the filtering piece is conveyed into the filter pressing piece to be filtered again, part of clear liquid can also be obtained, more clear liquid can be obtained through filtering through matched use of the filtering piece and the filter pressing piece, and the filtering efficiency is high. The recycling rate of waste liquid is improved.

The invention relates to a method for catalytically synthesizing a large-size single crystal covalent triazine framework (CTF) by using a mercury-based quantum dot dynamic interface. According to the method, the efficient catalytic synthesis of the aromatic dinitrile monomer is realized through the dynamic action of the mercury-based quantum dots at a superacid liquid-liquid interface. The preparation method comprises the following specific steps: firstly, dispersing aromatic dinitrile monomers and oleic acid coated mercury-based quantum dots in an organic solvent to form a precursor dispersion liquid; then slowly injecting the solution into superacid to form a clear liquid-liquid two-phase interface; under the conditions of proper temperature and rotating speed, inducing the monomers to be orderly assembled and grow through active species released by the mercury-based quantum dots; and finally, cleaning and drying to obtain the large-size CTF single crystal with high crystallinity. According to the method, the soft template effect of the mercury-based quantum dots and a super-acid enhanced reversible error correction mechanism are utilized, so that the nucleation entropy change can be effectively inhibited, and the crystal quality can be improved.

This invention relates to the technical field of ferric phosphate wastewater, specifically to a method and system for treating ferric phosphate wastewater. The treatment method includes the following steps: pretreating ferric phosphate washing wastewater, followed by solid-liquid separation to obtain a first clear liquid and a first precipitate; adding a reducing agent to the first precipitate for dissolution, and adjusting the pH to 1.8-2.0 with acid to obtain a second clear liquid; adjusting the pH of the second clear liquid to 5.2-5.7, and performing solid-liquid separation to obtain a third clear liquid; adjusting the pH of the third clear liquid to 6.8-7.2, and performing solid-liquid separation to obtain a second precipitate; adjusting the pH of the first clear liquid to 8.3-8.5, and performing solid-liquid separation to obtain a third precipitate. This invention, by adjusting the ferric phosphate wastewater to different pH values ​​at different stages, can selectively remove different metal elements under different pH conditions, enabling the classified collection of different metal element precipitates and creating greater economic value.

The invention relates to the technical field of functional food, and particularly discloses a preparation method and application of origanum vulgare essential oil oral nanoemulsion, the preparation method comprises the following steps: by taking origanum vulgare essential oil as an oil phase, PEG-40 hydrogenated castor oil as a surfactant and propylene glycol as a cosurfactant, determining the mass ratio of the surfactant to the cosurfactant to be 5: 1 through optimization, and preparing the origanum vulgare essential oil oral nanoemulsion. And determining the final prescription composition by using the quasi-ternary phase diagram. The oregano essential oil oral nano-emulsion provided by the invention is a faint yellow transparent clarified liquid, is good in stability, has a remarkable bacteriostatic effect on staphylococcus aureus and escherichia coli, solves the problems of poor water solubility, poor stability and strong oral irritation of the oregano essential oil, and provides a good basis for the application of the oregano essential oil as an oral preparation.