984 results about "Magnesium ion" patented technology

The invention discloses an electrochemical descaling process ion concentration dynamic balance control method and system, and relates to the field of water treatment of a circulating cooling water system.The method comprises the steps that a multi-parameter sensor is deployed to collect calcium and magnesium ion concentration, pH, conductivity, flow and other multi-dimensional data in real time, and an electrochemical deposition dynamic model is combined; dynamically evaluating the time sequence change trend of the ion concentration; according to the method, an ion concentration dynamic balance control algorithm is constructed, and the current density adjusting quantity is calculated by synthesizing ion concentration deviation and historical integral deviation, so that the target current density of the electrochemical reactor is adaptively adjusted, and the system is always maintained in a target concentration interval under different inlet water quality and load conditions; precise electrolysis control is achieved by periodically adjusting power output, and the descaling efficiency and energy consumption are effectively balanced. Therefore, the self-adaptive adjustment of the electrochemical descaling process is realized, and the stability and the self-adaptability of the descaling process are remarkably improved.

The invention discloses a reaction buffer solution for improving endotoxin detection sensitivity of a recombinant tachypleus amebocyte lysate, a kit containing the reaction buffer solution and application of the reaction buffer solution. The reaction buffer solution comprises the following components: a Tris-HCl buffer solution, magnesium ions, sodium chloride, cane sugar, ethylene glycol diethyl ether diamine tetraacetic acid, a nonionic surfactant and cyclodextrin or a derivative thereof. The invention also discloses a preparation method of the reaction buffer solution and a kit containing the reaction buffer solution. When the reaction buffer solution or the kit is used for detecting the endotoxin of the recombinant tachypleus amebocyte lysate, the sensitivity of the recombinant tachypleus amebocyte lysate for detecting the endotoxin can be improved by one order of magnitude, the lowest detection limit can reach 0.0005 EU / ml, the reaction buffer solution or the kit has strong anti-interference capability and short reaction time, and the detection efficiency is greatly improved.

The invention discloses an imidazolium ionic liquid modified magnesium ion battery electrolyte and a preparation method and application thereof. The imidazolium ionic liquid modified magnesium ion battery electrolyte is obtained by fully dissolving [EOE-A-Im] [TFSI] ionic liquid in an APC electrolyte. Wherein [EOE-A-Im] [TFSI] is a 1-allyl-3-(2-ethoxyethyl)-1H-imidazole-3-onium bis (trifluoromethylsulfonyl) imine salt, and APC is a total phenyl complex. The imidazolium ionic liquid modified magnesium ion battery electrolyte disclosed by the invention is relatively wide in electrochemical window, excellent in compatibility with electrodes, high in magnesium deposition-dissolution efficiency, low in overpotential and good in cycling stability; and the preparation method of the imidazolium ionic liquid modified magnesium ion battery electrolyte is simple and environment-friendly, and accords with green industrial production.

The invention discloses a laser cleaning method for a magnesium-based foil, and belongs to the technical field of magnesium ion battery manufacturing. According to the laser cleaning method for the magnesium-based foil, the magnesium-based foil is magnesium foil or magnesium alloy foil, and the method comprises the following steps that laser cleaning is conducted on the magnesium-based foil through a laser device, and a laser beam conducts 45-degree cross filling path scanning on the surface of the magnesium-based foil; monitoring a plasma spectral line of laser ablation in real time by using a plasma spectrometer; based on the dynamic change of the magnesium characteristic plasma spectral line intensity, the cleaning parameters of the laser are adjusted; and after cleaning is completed, an oxide layer on the surface of the magnesium-based foil is removed. 45-degree cross filling path scanning is adopted, heat accumulation of a repeated scanning area can be reduced, during 45-degree cross filling, adjacent scanning lines cover in a cross mode, heat distribution is more uniform, heat of the scanning area can be reduced, and therefore the problems of local overheating and negative plate perforation or structural damage caused by too high energy are avoided.

The invention provides a high-quality potassium hydroxide refining and impurity removal process, belongs to the field of potassium hydroxide impurity removal, and aims to overcome the defect that the purity of a potassium hydroxide product is reduced due to defects in removal precision and process stability during potassium hydroxide impurity removal in the prior art. The method comprises the following steps: carrying out oxidation decomposition on organic matters and precipitating calcium and magnesium ions, carrying out coarse filtration to remove large-particle impurities, carrying out graded filtration by adopting a three-stage series inorganic membrane module, carrying out efficient interception on impurities with different particle sizes by accurately controlling the pressure, temperature and flow rate of each membrane layer, and carrying out hydrochloric acid neutralization and potassium sulfite dechlorination to optimize the indexes of the brine. And finally, trace calcium and magnesium ions are deeply removed by utilizing the selective adsorption characteristics of the chelate resin and the strong acid cation resin, and after the resin is saturated, the resin is eluted, regenerated and recycled through acid and alkali with specific concentration, so that the impurity removal effect of potassium hydroxide is improved.

The invention provides an organic-inorganic composite conditioner for improving a soil structure. Comprising the following raw materials in parts by mass: 100-150 parts of calcium, 20-50 parts of magnesium, 10-20 parts of polyglutamic acid, 0.5-2 parts of zinc, 2-4 parts of boron, 2-4 parts of iron, 100-150 parts of organic nitrogen, 150-200 parts of composite organic natural polypeptide amino acid, 50-70 parts of seaweed boron molybdenum, 50-80 parts of phosphorus calcium zinc liquid, 20-50 parts of seaweed calcium magnesium boron iron zinc and 100-120 parts of a plant nutrition preparation. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of high phosphorus and high potassium, 150-200 parts of organic waste compost, 50-80 parts of a synergist and 50-100 parts of a functional microbial agent. Through a unique chelation technology, polyglutamic acid and calcium and magnesium ions are fully fused to form an efficient medium trace element water-soluble fertilizer, calcium and magnesium are directly absorbed by a root system after flushing application, the calcium utilization rate is improved by 50% or above, and due to the fact that polyglutamic acid carries strong negative charges, fertilizer loss caused by rainwater leaching is effectively reduced, and the yield of the fertilizer is improved. And the water-retaining and fertilizer-retaining functions are more obvious when the fertilizer is used in sandy loam.

The application provides an in-vitro cell-free protein synthesis system and kit containing exogenous magnesium ions and application thereof, including a D2P system (DNA-to-Protein system) and an mR2P system (mRNA-to-Protein system), and belongs to the technical field of protein synthesis. The in-vitro cell-free protein synthesis system containing exogenous magnesium ions adopts magnesium aspartate as a novel magnesium ion source, and especially in a eukaryotic cell-free system, compared with a traditional magnesium ion source, can significantly improve the protein synthesis efficiency and protein expression amount. A more efficient and higher-throughput in-vitro protein synthesis kit and a synthesis method of exogenous proteins are also provided, and the kit has the advantages of simplicity, convenience and low cost.

The invention belongs to the technical field of magnesium ion batteries, and particularly relates to a magnesium ion battery electrolyte, a preparation method thereof and a magnesium ion battery. The invention provides a magnesium ion battery electrolyte. The magnesium ion battery electrolyte comprises a magnesium salt electrolyte, an amine organic solvent and an imidazole organic solvent. According to the magnesium ion electrolyte, the imidazole and amine organic solvents are used as the mixed cosolvent of the magnesium ion electrolyte, so that the electrolyte magnesium salt can be effectively dissolved, and the problems of decomposition and passivation of the electrolyte solvent and corrosion of a magnesium metal negative electrode can be effectively solved; the amine and imidazole co-soluble magnesium ion electrolyte provided by the invention can realize reversible deposition and dissolution of a magnesium metal negative electrode under the condition of a wide temperature range of-30 to 80 DEG C, and can be applied to a rechargeable magnesium battery.

The invention relates to the technical field of cleaning agents, and discloses a biodegradable environment-friendly cleaning agent, which comprises: a composite surfactant system comprising at least one nonionic surfactant, an ampholytic surfactant and a chelating functional surfactant; the plant extract oil system comprises limonene and a eucalyptus oil mixture; the functional particle system comprises nanoscale enzyme microcapsules and slow-release type oxidized particles; the natural polysaccharide stable network system comprises at least two polysaccharide thickeners and a bio-based cross-linking agent, and the assistant system comprises a metal ion chelating agent, a buffer acid system and water. By introducing sodium polyaspartate as a green chelating surfactant, efficient chelating of calcium and magnesium ions under a hard water condition is realized, the cleaning power is remarkably improved, water stain residues are reduced, and the cleaning performance with wider adaptability is obtained.

The invention provides an electrochemical water treatment method applied to data center cooling circulating water treatment, and relates to an electrochemical water treatment technology. The electrochemical water treatment and the RO system are combined, water quality parameters are monitored in real time through multiple sensors, operation parameters of the electrochemical water treatment device are dynamically adjusted through a self-learning control algorithm, calcium and magnesium ions in water are preferentially removed, when the water quality reaches a set value, the RO system is started, and the conductivity is further reduced; accurate regulation and control of water quality and automatic stable operation are realized, and the water treatment efficiency and the intelligent level are improved.

The invention belongs to the technical field of wastewater treatment, and provides a method for removing and recovering manganese from acid mine wastewater. The method comprises the steps that the acid mine wastewater is subjected to iron removal treatment to obtain iron removal supernate, a manganese removal agent is added into the iron removal supernate to obtain manganese precipitation residues and manganese removal supernate, the manganese precipitation residues and sulfuric acid are mixed to obtain leaching liquid and leaching residues, and the leaching liquid is electrolyzed to obtain metal manganese; the manganese removal agent is sodium silicate and / or sodium metasilicate. According to the method, the added manganese removal agent does not enable silicate ions and manganese ions to generate manganese silicate, but enables the silicate ions to generate a hydrated calcium silicate adsorbent or a porous magnesium silicate adsorbent in situ with calcium and magnesium ions by using the calcium and magnesium ions existing in the acid mine wastewater, so that the recovery and removal of manganese are realized; the method disclosed by the invention is simple and low in cost, and not only realizes recovery of manganese resources, but also realizes deep treatment of residual manganese; and the leaching residues generated in the manganese recovery stage can also be used for deeply treating the manganese-removed supernate, so that the generation of waste residues is reduced.

The invention relates to the technical field of micro-leakage detection, in particular to an online positive and negative pressure micro-leakage detection system. According to the technical scheme, the system comprises a foaming reagent module, a positive pressure and negative pressure detection equipment module, a data acquisition unit, an online operation module, a micro-leakage positioning module and a visual interaction module. According to the invention, the advantages of multiple modules are integrated, the foaming reagent has optimized components, is clean and convenient, is suitable for wide-temperature and high-calcium magnesium ion environments, and does not need surface pretreatment; the positive and negative pressure detection module realizes safe and flexible detection and accurate impurity separation through multi-stage adjustable pressurization, anti-explosion design, an oil-free vortex pump and a condenser; the data acquisition and online operation module records data in real time and ensures continuous and reliable detection through efficient switching of A / B sides; the micro-leakage positioning module utilizes a sound wave and infrared multi-source data fusion algorithm and an intelligent optimization algorithm to realize accurate positioning of leakage points, and the whole device has the advantages of high efficiency and accuracy in detection, safety and reliability, high environmental adaptability and convenience in operation.

The invention relates to the technical field of micromolecule mineral water monitoring, and discloses a micromolecule mineral water quality monitoring system based on an intelligent sensor. The system comprises a multi-channel spectrum sensor array, an ion selective field effect transistor group, a microfluidic preprocessing module, a dynamic compensation database, a self-adaptive analysis engine, a cloud verification interface and a feedback execution mechanism. The micro-fluidic pretreatment module is used for eliminating bubbles of an original water sample, screening particles and outputting stable liquid flow; the spectrum sensor array captures full-band absorption spectrum data to generate a characteristic matrix, and the transistor group detects concentration fluctuation of calcium ions, magnesium ions and silicate; the adaptive analysis engine performs multi-modal fusion and abnormal marking on the time sequence alignment data stream; the cloud interface performs cross validation on the local result and the regional water quality center reference library to generate a credibility report; and the feedback execution mechanism adjusts the microfluidic flow velocity and the sensor integration time according to a report to realize efficient water quality monitoring.

The invention discloses a method for preparing lithium phosphate with high efficiency and low cost, which comprises the following steps: roasting spodumene concentrate and phosphoric acid, and carrying out slurrying leaching and solid-liquid separation to obtain a lithium dihydrogen phosphate solution; the method comprises the following steps: evaporating and concentrating a lithium dihydrogen phosphate solution, regulating the pH value of the lithium dihydrogen phosphate solution to 7-8 by adopting ammonia water, adding calcium phosphate seed crystals, inducing to remove residual calcium ions and magnesium ions in the solution, and carrying out solid-liquid separation to obtain a phosphate solution containing lithium ions; and then adjusting the pH value back to 11-13 by adopting alkali for lithium precipitation to obtain a lithium phosphate solid, and washing and drying to obtain a battery-grade lithium phosphate product. According to the preparation process of the lithium phosphate, the spodumene is acidized and roasted by adopting phosphoric acid, and pulpified and leached, and calcium ions and magnesium ions in a solution are directly induced by adopting calcium phosphate seed crystals to form crystals to be separated out on the basis of a weakly alkaline condition, so that the process steps are simple and convenient, the subsequent purification procedure is omitted, and the preparation process is more suitable for industrialization; meanwhile, the lithium phosphate product with high purity and high yield can be obtained through the simple and convenient process, the purity can reach 99.5% or above, and the yield can reach 92% or above.

The wastewater treatment system comprises a water inlet unit, a reactor, a separation unit and a circulation unit which are sequentially connected to form a closed-loop system, the water inlet unit is further connected with a chemical dosing unit, the water inlet unit is used for conveying wastewater to the reactor, and the chemical dosing unit is used for adding alkali into the wastewater to adjust the pH value and providing required magnesium ions; a fluidization reaction zone and a separation zone are arranged in the reactor, and the fluidization reaction zone promotes generation and growth of struvite particles through particle collision and aggregation; the separation zone enables generated particles to partially fall back to the fluidization reaction zone for continuous reaction through preliminary solid-liquid separation; the separation unit is used for receiving the wastewater in the separation area, further removing residual particles, and enabling the small particles to flow back to the reactor through the circulation unit for recycling. By optimizing the particle generation, separation and backflow processes in wastewater treatment, the formation of target large particles is promoted, the resource recycling is facilitated, meanwhile, the consumption of chemical agents is reduced, and the cost is reduced.

The invention relates to a preparation method of a carboxylate dispersant and an application of the carboxylate dispersant in a suspending agent, and belongs to the technical field of dispersants.The carboxylate polymer containing carboxyl, polyethylene glycol and slow-release chelating agent nanoparticles are polymerized together to form a comb-shaped structure; the sulfonic acid group on the carboxylate dispersant is ionized into-SO3-, the surfaces of pesticide particles are negatively charged, the electrostatic repulsion in the system is enhanced, the collision among the softened pesticide particles can be weakened, the sedimentation trend of the pesticide nanoparticles is weakened to a certain extent, and the stability of the suspension system is improved. Meanwhile, sodium ethylene diamine tetracetate in the slow-release chelating agent nano-microspheres can be slowly released, the sodium ethylene diamine tetracetate is preferentially chelated with calcium ions and magnesium ions in water, the calcium ions and the magnesium ions are prevented from being combined with sulfonic acid and carboxylic acid groups on the carboxylate dispersing agent, and the comb-shaped structure of the carboxylate dispersing agent has strong steric hindrance, so that the carboxylate dispersing agent can be used for dispersing calcium ions and magnesium ions in water. The effect of physically blocking calcium and magnesium ions can be achieved.

The invention provides a preparation method and application of an engineered MXene nano-enzyme capable of realizing antioxidant and anti-inflammatory sequential treatment of acute kidney injury, and the preparation method is characterized in that an MXene nanosheet is used as a carrier, and an artificial nano-enzyme adaptive to AKI specific treatment is constructed through engineering modification. Specifically, firstly, the biocompatibility and the biological stability of the MXene nanosheet are improved through surface modification of PEG, then the surface modification of ac5a aptamer and magnesium ions is carried out, and the MXene engineering nano enzyme is endowed with active targeting property and sequential therapeutic property. The engineered MXene nano-enzyme can be quickly accumulated in the kidney after AKI, is anchored and combined with c5a, inhibits complement activation, eliminates overload ROS, releases Mg < 2 + > after reaction degradation, further inhibits an MAPK / NF-kappa B pathway, promotes M2 polarization of macrophages, regulates inflammation progress, and finally realizes maximum inhibition of AKI.

The invention relates to the technical field of biomedical materials, in particular to a double-network structure artificial blood vessel with anticoagulation, endothelium promotion and anti-infection functions and a preparation method of the double-network structure artificial blood vessel. The artificial blood vessel comprises a polymer fiber network artificial blood vessel substrate, a microscopic network hydrogel layer penetrating through the polymer fiber network artificial blood vessel substrate, and magnesium-copper alloy particles doped in the hydrogel layer. According to the artificial blood vessel with the double-network structure, the problem that a traditional small-caliber artificial blood vessel is insufficient in mechanical performance is greatly solved, copper ions and magnesium ions are released to the surrounding environment by means of degradation of the magnesium-copper alloy particles in the using process, the microenvironment of the surrounding tissue is adjusted to be alkalescent, nitric oxide is catalytically released, and the mechanical performance of the artificial blood vessel is improved. The artificial blood vessel with the double-network structure is endowed with anticoagulation, endothelium promotion and anti-infection functions. The problems of restenosis and insufficient endothelialization of a small-caliber artificial blood vessel in the prior art are comprehensively solved, and the long-term patency rate of the artificial blood vessel is increased.

The invention relates to a modified nano molecular sieve / graphene oxide composite membrane for lithium-magnesium separation and a preparation method thereof, and the preparation method comprises the following steps: (1) stirring a nano molecular sieve and an amino modified solution at a certain temperature to react for a certain time, and centrifugally collecting an aminated nano molecular sieve, the preparation method comprises the following steps: ultrasonically mixing an aminated nano molecular sieve and graphene oxide in an aqueous solution, and then carrying out vacuum filtration on the surface of a porous base membrane to obtain the functionalized nano molecular sieve / graphene oxide composite membrane. The preparation method has the beneficial effect that the introduction of the nano molecular sieve into the graphene oxide membrane optimizes an interlayer channel. The aminated nano molecular sieve enhances the positively charged property of the composite membrane and enhances the selectivity of lithium and magnesium ions. The prepared modified nano molecular sieve / graphene oxide composite membrane is simple in preparation method and high in controllability, the pore channel effect and the charge repulsion effect of the composite membrane are enhanced through introduction of the aminated nano molecular sieve, and the modified nano molecular sieve / graphene oxide composite membrane has wide application prospects in lithium and magnesium ion separation.

The building block is prepared from the following raw materials in parts by weight: 30 to 60 parts of ardealite, 0.5 to 2 parts of lime, 10 to 30 parts of slag, 0 to 2.5 parts of silica fume, 0 to 2.5 parts of fly ash, 1 to 5 parts of cement, a water reducing agent with the mass ratio of 0.5 to 1.5 percent of ardealite, 8 to 12 parts of water, 10 to 20 parts of an acrylic acid metal salt mixed solution, 0.5 to 2.5 parts of a water repellent agent and 15 to 50 parts of aggregate, the acrylic acid metal salt mixed solution contains calcium ions or / and magnesium ions; through the in-situ polymerization synergistic effect among the cement, the lime, the inorganic active material and the acrylic acid metal salt solution, the inorganic-organic hybrid gel efficiently and stably solidifies the phosphogypsum, harmful ions are converted into insoluble and thermodynamically stable forms, and efficient and stable phosphorus, fluorine and heavy metal immobilization is achieved. The mixing amount of the phosphogypsum is as high as 30-60%, the building block has good mechanical properties, the 28-day compressive strength of the building block is greater than or equal to 30 MPa, and the breaking strength is greater than or equal to 3.5 MPa; and through surface modification treatment of the hydrophobic agent, a hydrophobic film is formed on the surface of the ardealite, the hydrophobic performance of the surface of the ardealite is enhanced, the water resistance of the ardealite is improved, and the water absorption rate of the building block is less than or equal to 5.0%. And the preparation process has the advantages of low cost, simplicity and convenience in operation, environment friendliness and the like.

The invention discloses a marine energy-saving variable air volume indirect type air conditioner, and relates to the technical field of air conditioning systems, the marine energy-saving variable air volume indirect type air conditioner comprises an air conditioner assembly, the air conditioner assembly comprises an air conditioner shell, one side of the air conditioner shell is fixedly communicated with a fresh air pipeline, and an air return opening is formed in the position, close to one side, of the top of the air conditioner shell. According to the marine energy-saving variable-air-volume indirect type air conditioner, by starting a multi-stage electric push rod, a piston plate is driven to extrude a citric acid solution forwards into a return air inlet pipeline and a fresh air inlet pipeline, in the air inlet process, the citric acid solution can enter the heat exchanger body in air flow, descaling is conducted on the pipeline in the heat exchanger body, and the heat exchange efficiency is improved. Citric acid has good chelation ability and can generate chelation reaction with ions such as calcium and magnesium in incrustation to form a water-soluble complex, so that the purpose of removing the incrustation is achieved, and the citric acid has low corrosivity to stainless steel due to weak acidity.

The invention discloses a method for decalcifying by selectively precipitating magnesium ions in high-calcium and high-magnesium wastewater. The method comprises the following steps: pretreating the high-calcium and high-magnesium wastewater, filtering to remove impurities, and adjusting the pH value to obtain a pretreatment solution with the pH value of 9.5-10.5; adding phosphate into the pretreatment liquid to carry out auxiliary precipitation, so that Mg (OH) 2 crystals grow to obtain reaction slurry; introducing the reaction slurry into a sedimentation tank to settle Mg (OH) 2 crystals, and introducing supernate in the sedimentation tank into a decalcification tank; adding 100-200mg / L of polyaluminum chloride and 5-10mg / L of polyacrylamide into the decalcification tank, stirring and reacting, and introducing the reaction liquid into a decalcification sedimentation tank; carrying out solid-liquid separation in the decalcification sedimentation tank to obtain decalcified supernate; and carrying out deep decalcification on the decalcified supernate by using a selective ion exchange method. The method creates conditions for selective precipitation calcium removal and magnesium ion crystallization recovery of the high-calcium and high-magnesium wastewater.

The invention belongs to the technical field of coal chemical industry grey water treatment, and particularly relates to an advanced treatment method and system for coal chemical industry grey water circulating water. The method integrates pretreatment, complexing cracking, fractional crystallization and deep deamination, and is characterized in that a chelating structure of an organic phosphorus dispersing agent and calcium and magnesium ions is thoroughly destroyed through an advanced reduction-advanced oxidation combined process, target ions are released, and the core problems that hardness removal is hindered and phosphorus pollution is caused are solved; then, calcium and magnesium are respectively converted into calcium carbonate and magnesium ammonium phosphate particles for resource recovery by utilizing a secondary crystallization technology, so that the bottlenecks of high alkali liquor consumption and salt accumulation of a traditional high-pH magnesium ion precipitation method are broken through; and finally, the residual ammonia nitrogen is deeply removed by adopting a pollution-resistant PTFE hydrophobic membrane, so that the residual ammonia nitrogen is efficiently and stably removed, and the problem that a traditional polypropylene material membrane system is easy to pollute and block, easy to oxidize and difficult to apply to the field is solved.

The purification water dispenser comprises a water softening system, a water purification system and a hot water system, the water softening system is communicated with a raw water inlet of the purification water dispenser, the water purification system comprises a reverse osmosis filter element and a booster pump, and a water inlet of the reverse osmosis filter element is communicated with a first soft water outlet channel of the water softening system; the booster pump is arranged between a first soft water outlet channel of the water softening system and a water inlet of the reverse osmosis filter element, a water inlet of the hot water system is communicated with a water outlet of the reverse osmosis filter element, and the hot water system is used for providing hot water softened by the water softening system and purified by the water purification system for a user. According to the technical scheme, raw water can be softened through the water softening system, and the concentration of calcium and magnesium ions in water entering the reverse osmosis filter element is reduced, so that the service life of the reverse osmosis filter element is prolonged.

The invention relates to the technical field of high polymer materials, in particular to a corrosion-resistant cable sheath material and a preparation method thereof. The sheath material is prepared by taking an ethylene-octylene copolymer as a matrix and compounding functional fillers such as an aminated magnesium ion exchange A type molecular sieve, dopamine shell silicon dioxide nanoparticles and phenylboronic acid / octadecyl double-grafted silicon dioxide nanoparticles. Wherein the aminated Mg-A molecular sieve is used for efficiently capturing and fixing chloride ions through an ion-dipole effect and a hydrogen bond network; the dopamine shell layer silicon dioxide enhances the interface bonding strength through dual active groups of catechol and amido; phenylboronic acid / octadecyl double-grafted silicon dioxide constructs a dynamic boric acid ester cross-linked network and a hydrophobic barrier, and synergistic protection of crack self-healing and moisture barrier is achieved. The sheath material remarkably improves the long-term corrosion resistance and mechanical stability of the cable in a severe environment.

The invention belongs to the technical field of blocking remover preparation, and particularly relates to a chelating blocking remover for an oil field and a preparation method of the chelating blocking remover. According to the chelating blocking remover for the oil field, calcium ions and magnesium ions are removed through the synergistic effect of 1, 2-bis (2-aminophenoxy)-ethane-N, N, N ', N'-tetraacetic acid and the nitrilotriacetic acid disodium salt, aluminum ions and iron ions are removed through the synergistic effect of 1, 2-dimethyl-3-hydroxy-4-pyridone and the N, N '-ethylenediamine disuccinic acid, and the chelating blocking remover for the oil field has the advantages that the chelating blocking remover for the oil field is environmentally friendly and free of pollution. According to the present invention, potassium dihydrogen phosphate is adopted as a stabilizer, and polyoxyethylene lauryl ether sodium sulfate and sodium ricinoleate are added so as to improve the mixed scale removing effect by changing the rock surface wettability, promoting crude oil stripping and interacting with other raw materials. Due to the synergistic effect of the raw materials, the prepared chelating agent for the oil field has a very good corrosion rate on inorganic scales.

The invention belongs to the technical field of crystals, and particularly relates to a calcium fluoride crystal doped with metal ions, a preparation method of the calcium fluoride crystal and application of the calcium fluoride crystal in optical elements. The crystal is a calcium fluoride crystal doped with magnesium ions and barium ions, and in the preparation method of the crystal, the magnesium ions and the barium ions for doping are pretreated and coated with a calcium fluoride precursor, and the calcium fluoride crystal which is uniform in doping and excellent in performance is prepared by combining a traditional Bridgman-Stockbarger method with a gradient doping process. The crystal is applied to an excimer laser lighting system, and after an optical element manufactured by the crystal is exposed to gamma radiation larger than 2.8 Mrads, the 515 / 380 nm transmittance loss ratio of the optical element is lower than 0.4.

The utility model provides a multi-channel composite variable-frequency scale ion resonance facility which comprises a shell, a spiral cable, a water inlet straight pipe, a middle spiral coil pipe, a water outlet straight pipe, a flow regulating valve, a composite variable-frequency signal generator and a power supply, and the shell is a cylinder and is made of 316 austenitic stainless steel or 304 austenitic stainless steel; the spiral cable is spirally wound and mounted on the surface of the shell; the water inlet straight pipe, the middle spiral coil pipe and the water outlet straight pipe are made of magnetisable materials; the composite frequency conversion signal generator generates composite electromagnetic frequency conversion signals and is connected between the power source and the spiral cable, and circulating water passes through the multi-channel composite frequency conversion scale ion resonance facility and generates resonance under the action of the composite frequency conversion signal generator. The original saturated calcium and magnesium ion combination and even precipitation state is converted into the calcium and magnesium ion unsaturated state with high fluid solubility, and conditions are provided for subsequent access to a water inlet of heat exchange equipment, equipment maintenance cost reduction and heat exchange efficiency improvement.

The invention belongs to the technical field of water treatment brine reuse, and provides an electrochemistry-based brine calcium and magnesium graded extraction process, which comprises the following steps: brine enters a primary electrolysis device for electrochemical reaction, carbon dioxide is introduced, and calcium ions in the brine are precipitated; further entering a primary precipitation separation device, and intercepting and collecting precipitated calcium; then the brine enters a secondary electrolysis device, the density of current applied to an electrode is increased, and magnesium ions in the brine are precipitated; the solution enters a secondary precipitation separation device, and precipitated magnesium is intercepted and recycled; drying the separated calcium and magnesium precipitates to obtain a product; and finally, introducing the reacted effluent into an ion exchange resin chromatographic column to remove untreated calcium and magnesium ions, and applying the obtained hardness-free alkaline water to the hydrogen production industry. By regulating the current density and introducing CO2, calcium and magnesium in various kinds of saline water are respectively precipitated and extracted, and the device is suitable for salt-containing organic wastewater, seawater, seawater desalination concentrated solution, bitter brine and industrial circulating cooling water.

The invention provides a resin tower regeneration cycle optimization method based on an AI algorithm. The method comprises the following steps: S1, continuously monitoring the calcium and magnesium ion concentration of salt water at an outlet of a resin tower on line; s2, collecting operation parameters associated with the adsorption process of the resin tower, wherein the operation parameters comprise the salt water double-alkali excess alkali amount, turbidity, pH, ORP, flow, temperature and resin tower pressure difference; s3, constructing a resin adsorption capacity dynamic prediction model and a resin tower outlet calcium and magnesium content dynamic prediction model based on the calcium and magnesium ion concentration monitored in the step S1 and the operation parameters collected in the step S2; and S4, constraint conditions are set through a multi-objective optimization algorithm, a regeneration opportunity decision matrix is generated based on the real-time prediction data of the two dynamic prediction models constructed in the step S3, and the constraint conditions are used for judging whether a resin tower regeneration program is triggered or not. Dynamic optimization of the regeneration period of the resin tower can be realized, the quality of saline water is guaranteed, the regeneration frequency and material consumption are reduced, the production cost of an enterprise is reduced, and the operation efficiency of the resin tower is improved.