1926results about "Ion-exchanger regeneration" patented technology

Disclosed herein are cell processing systems, devices, and methods thereof. A system for cell processing may comprise a plurality of instruments each independently configured to perform one or more cell processing operations upon a cartridge, and a robot capable of moving the cartridge between each of the plurality of instruments.

The invention discloses a double-site doped titanium lithium ion sieve adsorbent as well as a preparation method and application thereof. The adsorbent is a lithium removal product of a double-site doped titanium lithium ion sieve adsorbent precursor, the chemical general formula of the double-site doped titanium lithium ion sieve adsorbent precursor is Li (2-x) MxTi (1-y) NyOz, M is at least one of Na < + >, K < + >, Zn < 2 + >, Co < 2 + >, Ni < 2 + >, Mg < 2 + > and Al < 3 + > and occupies Li site, N is at least one of Cr < 3 + >, Fe < 3 + >, Zr < 4 + >, Nb < 5 + >, Ta < 5 + >, V < 5 + >, Mo < 6 + > and W < 6 + > and occupies Ti site, x is larger than or equal to 0.001 and smaller than or equal to 0.5, and y is larger than or equal to 0.001 and smaller than or equal to 0.5. Metal cations are introduced to replace Li sites and Ti sites at the same time, Li site substitution enlarges interlayer spacing and improves Li < + > diffusion rate, Ti site substitution regulates local chemical bond and electron distribution, stabilizes lattice structure and enhances electron conduction, and through double-site doping, 'ion-electron 'double channels are constructed, so that a collaborative optimization effect is achieved. The double-site doped titanium lithium ion sieve adsorbent disclosed by the invention is applied to adsorption and extraction of lithium in a Bayer process sodium aluminate solution, and the adsorbent shows excellent adsorption performance.

The invention relates to the technical field of chemical separation, in particular to a cyclohexanone rectification and purification method based on high-tower segmented packing, which comprises the following steps: step 1, filtering a cyclohexanone raw material containing impurities to remove solid particles, and dynamically adjusting the filtering precision according to the viscosity of the raw material; 2, arranging a bottom section, a middle section and a top section in the vertical high tower; the temperature gradient of each section is regulated and controlled through an independent temperature control unit, so that the temperature gradient of the middle section is matched with the relative volatility of the cyclohexanone-light component; 3, dynamically adjusting the reflux ratio based on the real-time detection result of the purity of the tower top distillate, and controlling an intermittent discharge valve according to the density change of the tower bottom heavy component enrichment liquid so as to continuously remove the heavy components; and 4, recycling the waste heat of the steam at the top of the tower for preheating the raw materials, and inhibiting the tower pressure fluctuation through a buffer tank. Through the innovative design of sectional packing of the high tower, the separation efficiency is improved, the energy consumption is reduced, and meanwhile, the equipment reliability is improved.

The invention discloses a method for extracting and purifying flavone in litsea coreana through an ultrasonic-assisted eutectic solvent, and belongs to the technical field of green processing of natural products. The invention provides a method for efficiently preparing litsea coreana flavone by integrating computer prediction, green solvent extraction and resin purification technologies. The method comprises the following steps: firstly, calculating and screening a deep eutectic solvent system with the highest affinity with the litsea coreana flavone on the basis of a COSMO-RS theoretical model, then coupling the optimized DES with an ultrasonic-assisted extraction (UAE) technology, and through the synergistic effect of the DES and the UAE technology, remarkably improving the extraction rate of the litsea coreana flavone and furthest keeping the biological activity of a target component; then, a macroporous resin dynamic adsorption-desorption purification process is linked, so that high-selectivity enrichment and impurity removal of the flavonoid compounds in the crude extract are realized, a high-purity product is obtained, and a complete process route from intelligent screening, efficient extraction to precise purification is finally formed.

The invention provides an adsorbent capable of simultaneously adsorbing bilirubin and cytokines and a preparation method and application thereof, and the preparation method comprises the following steps: carrying out suspension polymerization reaction on a styrene monomer and a polyvinyl cross-linking agent in a dispersion medium under the action of a continuous multi-component pore-foaming agent and an initiator to prepare polystyrene-based macroporous resin; carrying out chloromethylation reaction on the polystyrene-based macroporous resin to prepare chlorine balls; carrying out post-crosslinking reaction on the chloromethylated beads to prepare the adsorbent capable of adsorbing bilirubin and cytokines at the same time; the continuous multi-component pore-foaming agent comprises a first pore-foaming agent, a second pore-foaming agent and a third pore-foaming agent of which the solubility parameters are gradually increased in sequence; the temperature of the suspension polymerization reaction is adjusted according to the mass fraction of the polyvinyl cross-linking agent in the monomer mixture and the solubility parameter of the continuous multi-component pore-foaming agent, and the monomer mixture is composed of styrene monomers and the polyvinyl cross-linking agent. The bilirubin and cell factors can be adsorbed at the same time, and the safety of blood purification is improved.

The invention relates to the technical field of resource recycling of industrial waste liquid, in particular to a cyclic treatment and reutilization method of alkali liquor for chitosan preparation, which comprises the following steps: step 1, on-line monitoring and shunting of the state of the alkali liquor; step 2, multi-stage separation and impurity removal; 3, dynamic regulation and control of ion components: adjusting the flow rate based on the change rate of the conductivity value at the inlet of the ion exchange resin column, and triggering resin regeneration when the pH value at the outlet reaches a regeneration critical point; 4, alkali activity compensation: dynamically supplementing alkali according to the effective alkali concentration of regenerated alkali liquor and the demand of a target recycling process section; and 5, sequential control recycling: injecting fresh alkali liquor when the initial-stage deacetylation reaction is started, and proportionally pumping regenerated alkali liquor when the middle-stage reaction reaches a temperature peak value. According to the method, the quality and the reaction efficiency of the alkali liquor are effectively controlled, various parameters in the production process are optimized through accurate dynamic regulation and control, the recycling rate of the alkali liquor is increased, the production cost is reduced, and the dual effects of environmental protection and energy conservation are achieved.

The invention provides a high-molecular adsorption material with high selectivity on platinum group metals as well as a preparation method and application of the high-molecular adsorption material, and belongs to the technical field of material science. Comprising the following steps: (1) preparing a methanol solution containing platinum group metal ions, and adding a functional monomer mixture and modified graphene oxide to form a pre-assembled compound; (2) adding a cross-linking agent and an initiator, removing oxygen, and polymerizing to obtain a polymer; and (3) grinding the polymer, eluting metal ions, washing to be neutral, and drying. The high-molecular adsorption material provided by the invention takes modified graphene oxide as a support body, template molecules and specific functional monomers (4-vinylpyridine and 2-mercaptobenzimidazole) are combined to form a pre-assembled compound, then a cross-linking agent and an initiator are added, recognition sites are fixed through cross-linking polymerization, and finally, the high-molecular adsorption material is obtained after the template molecules are eluted. The adsorbent is high in adsorption rate, capable of specifically adsorbing platinum group metal, good in stability and reproducibility and capable of being repeatedly used.

The invention relates to an aromatic hydrocarbon isomer adsorbent containing a modified X-type molecular sieve. The outer surface area of the modified X-type molecular sieve is 9.5-19m < 2 > / g, and the sum of the pore volume of mesopores and the pore volume of macropores is 6%-18% of the total pore volume. The p-xylene adsorbent comprises 88-95% by mass of a modified X-type molecular sieve, 4-11% by mass of a crystal transformation X-type molecular sieve and 1-3% by mass of a matrix. The invention also relates to a preparation method of the adsorbent and application of the adsorbent in adsorption separation of p-xylene from mixed C8 aromatic hydrocarbons.

The invention relates to the technical field of generator set mixed bed operation monitoring, and discloses an operation health degree monitoring method and system based on fine treatment mixed bed resin tracking, the monitoring system comprises a sampling tube, a sampling electric valve, a sampling isolation valve, a cation resin column, a conductivity meter, a mixed bed failure monitoring device and a resin regeneration system; the sampling pipe extends into the central axis of the fine treatment mixed bed; a plurality of sampling pipes are arranged along the height direction of the fine treatment mixed bed, are sequentially connected with a sampling electric valve and a sampling isolation valve, and then are connected in series to one end of a cation resin column; the other end of the cation resin column is connected with the conductivity meter; the mixed bed failure monitoring device is electrically connected with the sampling electric valve, the sampling isolation valve and the conductivity meter; and the resin regeneration system is connected with a water inlet pipeline and a water outlet pipeline of the fine treatment mixed bed through a fine treatment mixed bed resin inlet valve and a fine treatment mixed bed resin outlet valve respectively. Health degree monitoring is realized by establishing a layered monitoring system, and long-term stability of water quality of a power plant system is guaranteed.

The present application relates to the technical field of water treatment devices, and provides a water softener. The water softener comprises a water softening valve, a connection assembly, a water path assembly, and resin tanks. The water softening valve comprises a valve body, a valve element assembly, a driving part, and a transmission mechanism. Both the valve element assembly and the driving part are disposed within the valve body, and the driving part is in transmission connection with the valve element via the transmission mechanism. The connection assembly is in communication with the water softening valve and is located at one side of the water softening valve. The connection assembly is provided with a drain passage. The driving part is configured to drive the transmission mechanism to act, so as to control opening of the drain passage. The water path assembly is in communication with the connection assembly, and is used to guide the flow of water. The resin tanks are used to soften water flowing therethrough. In the present application, a driving apparatus is employed to drive the transmission mechanism to act, so that the transmission mechanism can control the valve element to control water-path switching, and can control the opening of passages within the connection assembly, thereby enabling full control of the entire water path, simplifying control logic, improving control efficiency, reducing the number of control devices, and lowering the failure rate of the water path control assembly.

The present disclosure is directed to methods and systems of purifying solvents. The purified solvents can be used for cleaning a semiconductor substrate in a multistep semiconductor manufacturing process.

The invention provides a purification technology for regenerated DMT in a chemical recovery process of waste polyester, which comprises the following steps: S1) mixing divalent metal salt, trivalent metal salt, an alkaline reagent and water, and carrying out vacuum drying on the reaction product to obtain a layered double-metal hydroxide precursor; s2) mixing the precursor with a solution containing functional anions, and carrying out vacuum drying on a product obtained after intercalation modification to obtain functional anion modified layered double hydroxide; s3) carrying out electrostatic self-assembly on the hydroxylated hexagonal boron nitride and the layered double-metal hydroxide, carrying out suction filtration on the obtained mixed solution on a carrier, and drying to obtain an adsorption film; s4, the waste polyester alcoholysis solution is adsorbed through the adsorption film.According to the pretreatment technology for purification of the waste polyester alcoholysis solution, the purified alcoholysis solution has higher purity, and meanwhile the difficulty of follow-up reduced pressure distillation purification of regenerated DMT is effectively reduced.

The present disclosure relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products. Herein are systems and processes for extracting lithium using ion exchange materials, where transition metal impurities may be removed from the synthetic lithium solution. In some embodiments, the transition metal species are reformulated to form ion exchange materials to be used in the systems and processes described herein.

The invention discloses a strong-hydrophobicity chromatographic stationary phase modified by a covalent triazine skeleton containing an octyl chain as well as a preparation method and application of the strong-hydrophobicity chromatographic stationary phase. Activated silica gel is modified by utilizing a silane coupling agent, so that gamma-glycidyl ether oxypropyl trimethoxy is introduced into the surface of the silica gel; and performing in-situ growth of a covalent triazine skeleton layer containing an octyl chain through a Schiff base condensation reaction to prepare the strong-hydrophobicity chromatographic stationary phase. A covalent triazine skeleton containing a hydrophobic octyl chain in the structure is used for modifying the surface of silica gel, and a bonding phase contains a triazine ring, a benzene ring, an octyl chain and an amino group. According to the stationary phase, a hydrophobic long octyl chain is introduced into a bonding unit of CTF, so that the structure, morphology and performance of the CTF are changed, a'flower-on-sphere 'morphology is formed, and the stationary phase has a rigid porous structure, adjustable hydrophilicity / hydrophobicity, a rich pi electron system, strong hydrophobicity and good separation selectivity for non-polar compounds, and can be widely applied to separation of various samples.

The invention provides a method for producing berberine hydrochloride, berbamine and jatrorrhizine hydrochloride by using berberis poiretii schneid. The method comprises the following steps: by taking berberis poiretii schneid as a raw material, carrying out crushing, acid extraction, heat-preservation filtration clarification and membrane separation to obtain a membrane refined solution; then, the berberine hydrochloride is produced through crystallization and recrystallization; performing decoloration and fractional crystallization through alkaline anion exchange resin to produce berbamine; and carrying out macroporous adsorption resin chromatography to produce jatrorrhizine hydrochloride. The berberine hydrochloride, the berbamine and the jateorhizine hydrochloride are continuously produced and prepared, and comprehensive utilization of the berberis poiretii schneid raw material is achieved; the problem that the salt wastewater pollutes the environment can be solved, and step-by-step separation and purification of alkaloid are achieved; the membrane separation and the resin are combined, so that repeated crystallization and activated carbon decoloration are avoided, and the yield and the quality of the berbamine can be remarkably improved; the high-content jateorhizine is prepared without using an organic solvent except ethanol, and the application prospect in industry is wide.

The invention belongs to the technical field of waste PET (Polyethylene Terephthalate) recovery, and particularly relates to a continuous production system and process for efficiently recovering and refining PTA (Purified Terephthalic Acid) from waste PET and application. According to the continuous production system and process for efficiently recovering and refining the PTA from the waste PET, through mutual cooperation of the enzymolysis unit, the first solid-liquid separation unit, the filter cake dissolving and decolorizing unit, the electrolysis unit, the second solid-liquid separation unit and the recrystallization unit, continuous production of'obtaining the refined PTA by taking the waste PET as a raw material 'is realized; besides, by adjusting the runner structure in the electrolysis assembly of the electrolysis unit, the situation of electrolysis interruption caused by the fact that TA generated by electrolysis is prone to being deposited on the surface of the anode plate is avoided, guarantee is provided for continuous proceeding of the whole degradation and recovery process, and the system and the process have important significance on efficient degradation and recovery of waste PET.

The invention relates to a hardness removal device and method for high-hardness salt-containing wastewater, the device comprises an exchange unit, a regeneration unit and a regenerated waste liquid disposal unit, wastewater flows through ion exchange resin from bottom to top in an exchange column and is in countercurrent contact with the ion exchange resin, so that the effect of removing hardness in the wastewater is achieved; the saturated resin sequentially passes through the first regeneration column, the second regeneration column and the third regeneration column to be subjected to first-stage regeneration, second-stage regeneration and third-stage regeneration, first-stage regeneration liquid sequentially enters the third regeneration column, the second regeneration column and the first regeneration column to regenerate the resin, and a countercurrent regeneration mode is adopted to improve the regeneration degree of the resin; the regenerated resin is transferred to an exchange column for ion exchange, and regenerated waste liquid is transferred to a regenerated waste liquid treatment unit for treatment. The method can replace a traditional chemical softening method and a cation bed softening method for combined hardness removal, realizes thorough removal of high hardness, reduces the dosage of a hardness removal agent, and solves the problem of deposition and blockage of calcium sulfate scale formed by sodium sulfate as a regeneration solution.

The invention relates to the field of polymer grading, and discloses a polyethylene grading method, polyethylene obtained through the polyethylene grading method, a system for polyethylene grading and application of the system. According to the polyethylene grading method, on the basis of preparing a high-temperature liquid chromatographic column, two-time flow division is adopted, and the flow ratio of second flow division is controlled, so that accurate and directional grading of a polyethylene raw material is realized, and the purposes of accurate and directional regulation and control of the average molecular weight, the molecular weight distribution curve and the branched structure of polyethylene, especially low-density polyethylene, are realized.

The invention relates to the technical field of pharmaceutical separation, and discloses a device, method and application of ursodeoxycholic acid preparation and purification. The device comprises a separation tank, wherein a batching center cylinder is rotatably installed inside the separation tank, and a plurality of elution tubes are arranged around the batching center cylinder. The batching center cylinder rotates forward, and centrifugal force is used to load adsorption resin into each elution tube. Then, the batching center cylinder rotates reversely, and the volume of each elution tube is poured out by anti-centrifugal force, so as to achieve a more convenient effect of replacing the adsorption resin. The replaced adsorption resin is cleaned outside the device and reused. The purification method and application thereof realize column loading, sample loading and elution in the separation tank in sequence without stopping the machine for operation, and simplify the column loading and column replacement operations, so as to solve the problem that the separation and purification process in the prior art is complicated and not suitable for batch production, so as to meet the industrial production requirements of solvent recycling.

The invention relates to the technical field of preparation of high-purity boron oxide, and discloses a purification method of high-purity boron oxide and a device thereof, and the purification method comprises the following steps: step 1, mixing crude boron oxide with a liquid metal alloy, and dissolving metal impurities through gradient temperature control; 2, applying ultrasonic treatment to the mixed system, introducing a vortex field, and stripping impurities on the surface of the boron oxide; 3, a liquid metal phase and a boron oxide solid phase are separated through cooperation of a magnetic field and a pulse high-voltage electrostatic field; 4, non-metal ion impurities are removed through a gradient porous ceramic adsorption bed; and step 5, melting boron oxide in vacuum and carrying out gradient cooling crystallization. By adopting the technical scheme of a Ga-I n-Bi-Er quaternary liquid alloy system, the technical effect of selective targeted removal of metal impurities is achieved, and compared with a liquid metal system depending on single phase solubility difference in the prior art, the defect that efficient chelating and dynamic settling separation of the impurities cannot be achieved at the same time is overcome.

The utility model belongs to the technical field of semiconductor silicon wafer processing, and discloses semiconductor silicon wafer grinding waste liquid filtering equipment, which comprises a processing box, and is characterized in that the processing box is arranged on a bottom frame, bearings are arranged at the upper end and the lower end of the processing box, and a bearing frame is arranged at the top of the processing box; a primary filtering structure and a driving structure are arranged on the bearing frame, the primary filtering structure is communicated with the treatment box, a stirring structure and a liquid discharging structure are arranged in the treatment box, and the stirring structure and the liquid discharging structure are both connected with the driving structure. According to the utility model, the used semiconductor silicon wafer grinding waste liquid is conveyed into the primary filtering box, and large-particle impurities in the grinding waste liquid are filtered by the primary filtering box, so that the grinding waste liquid can be filtered for multiple times, the difficulty of primary filtering treatment can be reduced, the filtering effect of the grinding waste liquid is improved, and the recycling of the grinding liquid is facilitated.

The invention discloses a processing technology of a quinoa seedling bud green juice bubble functional beverage, and belongs to the technical field of beverage processing. Comprising the steps of raw material pretreatment, crushing and juicing, filtration treatment, enzyme deactivation treatment, blending, sterilization treatment and carbonation treatment. In the filtering process, a product obtained after juicing is filtered through a 200-400-mesh filter screen and then filtered through a filter material; the filter material comprises modified PVDF (polyvinylidene fluoride), modified chitosan, modified MOFs (metal organic frameworks) and modified titanium dioxide. The modified MOFs are obtained by acetylating MOFs and then modifying the MOFs with a silane coupling agent; the modified PVDF is obtained by sequentially grafting sulfobetaine metacrylic acid ester, polyethylene glycol metacrylic acid ester and alkyl acrylate on PVDF; the modified chitosan is obtained by sequentially grafting PEG-acrylic acid and methyl methacrylate to chitosan; the modified titanium dioxide is obtained by modifying titanium dioxide through a silane coupling agent. The chenopodium quinoa seedling buds are made into the bubble functional beverage, so that the beverage is endowed with good taste; the filter material can reduce loss of protein and polyphenol and effectively retain nutritional ingredients.

The invention discloses a preparation method of an acid-resistant chlorine-resistant selective palladium adsorbent, and relates to a preparation method of a selective palladium adsorbent. The invention aims to solve the technical problems of poor structural stability, low adsorption capacity, poor selectivity and difficulty in cyclic regeneration of the existing palladium adsorbent in strong acid and high chlorine systems. According to the preparation method, fumarinonitrile is taken as a cyanogen-containing monomer, zinc chloride is taken as a catalyst, a triazine skeleton network is constructed through an ionothermal trimerization reaction, no organic solvent or expensive catalyst is needed in the process, the reaction condition is mild, the process is simple and convenient, and good environmental compatibility is achieved; the PdCl4 < 2->-doped porous carbon material provides abundant coordination sites, has a relatively large specific surface area and a developed porous structure, can effectively promote mass transfer and adsorption of metal ions, can form stable complexation with PdCl4 < 2->, shows extremely high palladium adsorption capacity and selectivity, and can still keep structural integrity and adsorption activity under strong acid and high chlorine conditions.

The invention relates to the technical field of isotopes, in particular to a generator for separating yttrium [90Y] in mother liquor containing strontium [90Sr] and a separation method. The separation method comprises the following steps: adding mother liquor containing strontium [90Sr] into a resin separation column, leaching with leacheate, collecting the leacheate containing strontium [90Sr], and emptying liquid in the resin separation column with air; evaporating, dissolving and standing the strontium [90Sr]-containing leacheate at 85-95 DEG C, collecting the strontium [90Sr]-yttrium [90Y] leacheate, and adding the strontium [90Sr]-yttrium [90Y] leacheate into the strontium [90Sr]-containing mother liquor for circulation; and eluting by using an eluent, and collecting the eluent containing yttrium [90Y]. According to the method, the evaporation temperature of the leacheate containing strontium [90Sr] is adjusted, so that the loss of strontium [90Sr] can be greatly avoided, and the separation effect of yttrium [90Y] is not influenced.

The invention provides a percolation device and a preparation method of a phyllanthus emblica extract. The percolation device comprises a percolation tank, a pressing device and a plurality of separation structures, the preparation method of the emblic leafflower fruit extract comprises the following steps: firstly, coarsely crushing and soaking an emblic leafflower fruit medicinal material, then percolating the emblic leafflower fruit medicinal material in a percolating device, and collecting percolate; the preparation method comprises the following steps: extracting a percolate, adsorbing the percolate through macroporous resin, eluting with water and ethanol in sequence, combining an obtained lower column liquid and a water washing liquid, separating through a ceramic membrane and an ultrafiltration membrane in sequence to obtain a micromolecular functional sugar part, decolorizing with activated carbon, eluting with an ethanol solution, concentrating and drying to obtain a polyphenol part, and proportioning to obtain a target product. According to the technical scheme provided by the invention, active micromolecular functional sugar and polyphenol components in the phyllanthus emblica can be extracted and enriched at one time. The extract is light in color and good in solubility, so that the problems of single extracted component and inconvenience in application due to poor color and solubility in the traditional process are effectively solved.

The invention relates to a method for extracting lithium from a salt lake and synchronously removing silicon and boron. The method comprises the following steps: pre-treating and filtering lithium-containing brine; carrying out reverse osmosis concentration treatment to concentrate lithium to be more than 2.5 g / L; carrying out nanofiltration treatment to remove magnesium, calcium and sulfate ions; treating by adopting an electrodialysis system to obtain a high-silicon and high-boron desalted solution and a low-silicon and low-boron lithium concentrated solution; the low-silicon and low-boron lithium concentrated solution is treated with chelating resin and boron removal resin, so that magnesium and calcium ions are smaller than or equal to 2 mg / L, boron is smaller than or equal to 20 mg / L, and the refined lithium concentrated solution is obtained; concentrating by an evaporation system, adding a precipitant, precipitating, filtering, washing, crushing and demagnetizing to obtain a low-silicon low-boron battery-grade lithium carbonate product. The invention further discloses a system for extracting lithium from the salt lake and synchronously removing silicon and boron, the complex and low-efficiency boron removal and silicon removal nanofiltration process is adopted, and concentration of lithium and efficient removal of silicon and boron are synchronously achieved; silicon scaling pollution caused by membrane separation and heat exchanger tube nests is avoided, and deep removal of silicon and boron is realized.

The present invention discloses a magnetic nanocomposite material, a preparation method thereof, and an application thereof in the enrichment of low-abundance proteins. The magnetic nanocomposite material proposed by the present invention is Fe3O4@TS-1. Its preparation method is simple to operate. The sol-gel hydrothermal method is adopted, and the preparation is stable. The magnetic composite material Fe3O4@TS-1 is successfully synthesized. While ensuring the material properties of the TS-1 molecular sieve material, this material not only guarantees excellent protein adsorption performance but also endows it with magnetism, providing a simpler, faster, and more efficient technical method for large-scale sample processing. The enrichment of low-abundance proteins based on the magnetic nanocomposite material proposed by the present invention can be applied to almost all sample types, effectively solving the interference caused by high-abundance proteins to the identification of low-abundance proteins during mass spectrometry detection, and the number of protein identifications can be increased by 100% - 700%.

The utility model relates to a water softening system and water softening machine equipment. The water softening system comprises a controller, a resin container, a constant-pressure siphon regeneration device and a waterway control valve, the water path control valves are arranged at the joints of water paths of the water softening system, the controller is respectively connected with the constant-pressure siphon regeneration device and the water path control valves, and the controller is used for controlling the constant-pressure siphon regeneration device to start and controlling the working state of the water path control valves in a regeneration mode. The constant-pressure siphon regeneration device is used for generating saline water with target concentration, and the saline water is driven to reversely flow in the resin container and then is discharged through the sewage port. The salt water with the target concentration is stably generated through the constant-pressure siphon regeneration device, so that the regeneration efficiency of ion exchange resin in the resin container and the water softening performance of the whole machine can be effectively improved.

The invention provides molybdenum sulfide powder, a heavy metal adsorbent, a photo-thermal conversion material, a distillation method, an oxygen reduction catalyst and catalyst ink. This molybdenum sulfide powder contains a 3R crystal structure of molybdenum disulfide. The heavy metal adsorbent according to the present invention contains molybdenum sulfide particles having a median diameter (D50) of 10-1000 nm as determined by a dynamic light scattering type particle size distribution measurement device. This photo-thermal conversion material contains a material containing molybdenum sulfide particles, and generates heat by absorbing light energy.

The invention discloses a method for efficiently separating uranyl ions based on a titanium-based metal organic framework material, the titanium-based metal organic framework material is MOF-902, and the adsorption separation of the uranyl ions can be realized by adding the titanium-based metal organic framework material into a liquid containing the uranyl ions. The invention develops a novel adsorbent for uranyl ion separation, which can realize rapid selective separation of uranyl ions.