114 results about "Iodide potassium" patented technology

The invention discloses a crown ether functionalized covalent organic framework material as well as a preparation method and application thereof, and the method comprises the following steps: adding a covalent organic framework material, 4-bromobenzo-15-crown-5, potassium carbonate and potassium iodide into an acetone solution for reaction, washing the obtained crude product, performing Soxhlet extraction with tetrahydrofuran for a certain time, and drying to obtain the crown ether functionalized covalent organic framework material. The crown ether functionalized covalent organic framework material is obtained. Compared with a synthesis method of crown ether functionalized COFs in the prior art, the method has the advantages that the crown ether (4-bromobenzo-15-crown-5) can be grafted to the COFs in one step, the Na < + > adsorption capacity and the adsorbent recycling performance are greatly improved, the synthesis method is simple, and synthesis of the crown ether functionalized COFs is greener, more convenient and more economical.

Iodized micellar casein is produced by adding, to an aqueous solution of micellar casein, crystalline potassium iodide at a ratio of 1:7-1:9; holding the mixture for 5-10 minutes; adding to the mixture crystalline potassium persulphate at a ratio of 1:8-1:12 crystalline potassium persulphate to micellar casein mass; holding the mixture for 4-8 hours at a temperature of 18-25°С and a pH of 6.5-8.9 while constantly monitoring the molecular iodine content of the solution and periodically adding portions of crystalline potassium persulphate at a ratio of 1:12-1:24 crystalline potassium persulphate to micellar casein mass to continue the iodination reaction; removing residual inorganic salts from the resulting aqueous solution by microfiltration and diafiltration, followed by sterilizing microfiltration and freeze drying or spray drying. The method makes it possible to produce iodized micellar casein that is suitable for creating products for preventing iodine deficiency and optimizing iodine metabolism and for preventing and protecting against radiation poisoning.

The invention relates to a synthesis method of low-cost environment-friendly dioscorea element I. The synthesis method comprises the following steps: by taking 3, 5-dimethoxybenzyl alcohol as a raw material, brominating, reacting with triethyl phosphite and 4-benzyloxy-3-methoxybenzaldehyde to generate 3, 4 ', 5-trimethoxy-3'-benzyloxy stilbene, carrying out ultraviolet cyclization reaction, reacting with palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon and debenzylating with hydrogen to obtain the Chinese yam element I. The potassium iodide is used as the catalyst in the ultraviolet lamp irradiation catalytic ring closing reaction, the pure water is used as the detergent, compared with the method adopting iodine as the catalyst and adopting a sodium thiosulfate aqueous solution as the detergent, the product yield of the compound 33-4 is 75%, the yield of the compound 33-5 is 16.6%, the purity is 98.7%, and the method has the advantages of low cost, high yield, few impurities and the like.

The present disclosure discloses a thermochromic copper iodide organic hybrid luminescent material and a preparation method thereof. The chemical formula of the thermochromic copper iodide organic hybrid luminescent material is Cu4I6C 18 H 30 N4; The preparation method includes the following steps: preparing 4-dimethylamino-1-ethylpyridinium iodide; reacting a methanol solution containing 4-dimethylamino-1-ethylpyridinium iodide with a potassium iodide solution containing cuprous iodide to obtain solid M; centrifuging, washing, and drying solid M to obtain the thermochromic copper iodide organic hybrid luminescent material. Single crystals of the thermochromic copper iodide organic hybrid luminescent material are prepared by the slow diffusion method. The thermochromic copper iodide organic hybrid luminescent material of the present disclosure has the characteristics of high fluorescence quantum yield, high stability, and thermochromism.

The present application provides a kind of hair care composition containing potassium iodide and its preparation method, the hair care composition includes A agent and B agent;The A agent includes 5,6-dihydroxyindole, potassium iodide, arginine, propylene glycol, sodium sulfite, ascorbic acid, xanthan gum and water;The B agent includes sodium laureth sulfate, potassium peroxodisulfate, cocamidopropyl betaine, disodium lauroyl glutamate, decyl glucoside, cocamide MEA, guar hydroxypropyltrimonium chloride, sodium chloride, citric acid, disodium EDTA, essence and water.The present application improves the stability of 5,6-dihydroxyindole by using potassium iodide mixed with 5,6-dihydroxyindole, improves the problem that dyeing effect is not obvious, uneven, dyeing is not persistent, and there is no risk of damage to hair and scalp by strong alkaline substances, avoids using benzidine substances with high carcinogenic and sensitizing risk, and the hair dyeing effect is more persistent, more mild, and safer.

Aspects of the present disclosure are directed towards a method for producing an activated carbon / bismuth oxy-iodide nanocomposite. The method includes heating a glycol solution including Bi(NO3)3·5H2O and activated carbon to 100° C. The method includes heating a glycol solution includes potassium iodide to 100° C. The method includes adding the glycol solution including Bi(NO3)3·5H2O and activated carbon and the glycol solution including potassium iodide to a reaction vessel including a solvent to form a reaction mixture. The method includes chilling the reaction mixture to ambient temperature. The method includes filtering the reaction mixture to obtain the activated carbon / bismuth oxy-iodide nanocomposite.

Aspects of the present disclosure are directed towards a method for producing an activated carbon / bismuth oxy-iodide nanocomposite. The method includes heating a glycol solution including Bi(NO3)3·5H2O and activated carbon to 100° C. The method includes heating a glycol solution includes potassium iodide to 100° C. The method includes adding the glycol solution including Bi(NO3)3·5H2O and activated carbon and the glycol solution including potassium iodide to a reaction vessel including a solvent to form a reaction mixture. The method includes chilling the reaction mixture to ambient temperature. The method includes filtering the reaction mixture to obtain the activated carbon / bismuth oxy-iodide nanocomposite.

The invention discloses a preparation method of a difluoromethyl reagent and application of the difluoromethyl reagent in synthesis of a nickel-catalyzed alkyl difluoromethyl compound. The preparation method of the difluoromethyl reagent comprises the following steps: in an inert gas atmosphere, adding potassium iodide, cuprous iodide and a water-containing dimethylformamide solution into a reaction container, heating, dropwise adding difluorochloroacetic acid of DMF (Dimethyl Formamide) into a reaction system, collecting difluoroiodomethane, and supplementing a 1-methyl-2-pyrrolidone NMP (N-Methyl Pyrrolidone) solution into the system. The invention provides a difluoromethyl reagent which is simple and convenient to operate, low in cost, high in yield, environment-friendly and beneficial to large-scale preparation and application of the reagent in synthesis of difluoromethyl substituted alkane compounds.

The invention relates to a preparation method of a nano silver halide emulsion, which comprises the following steps: S1, fully dissolving deionized water, sodium bromide, a nucleating aid, a stabilizer and gelatin in a container with disc type stirring, and uniformly mixing to prepare a primary glue solution; uniformly mixing silver nitrate with deionized water to prepare a silver nitrate solution; uniformly mixing sodium bromide, potassium iodide and deionized water to prepare a halogen solution; s2, at a certain temperature, injecting a prepared silver nitrate solution and a halogen solution into the primary glue solution at the same time to obtain a mother solution containing nano silver halide; and S3, desalting the mother liquor containing the nano silver halide, supplementing glue, and sensitizing to obtain the nano silver halide emulsion. The nucleating aid and the stabilizer are added into the gelatin aqueous solution, the prepared nano silver halide particles are uniform, stable in storage and free of aggregation, and the emulsion can be desalted at normal temperature, is low in energy consumption and high in production efficiency, and is beneficial to continuous production.

The invention discloses a fully continuous flow preparation method of 4, 5-diiodine-1H-imidazole, and belongs to the technical field of synthesis and preparation. The method comprises the following steps: S1, simultaneously conveying an imidazole-containing sodium hydroxide aqueous solution, an iodine-containing elementary substance and a potassium iodide aqueous solution into a micro-mixer and a continuous flow coil reactor, and carrying out a continuous synthesis reaction to obtain a 4, 5-diiodine-1H-imidazole reaction solution; and S2, dropwise adding an acetic acid solution into the 4, 5-diiodine-1H-imidazole reaction solution to neutralize, separating out a solid product, washing with ice water, filtering and drying to obtain a 4, 5-diiodine-1H-imidazole solid. The fully continuous flow reaction technology system provided by the invention has excellent mass transfer and heat transfer performance, greatly enhances mixing among material molecules, greatly shortens the reaction time, and improves the reaction efficiency. The reaction time is shortened to more than ten seconds from more than ten hours of the traditional intermittent kettle reaction; meanwhile, the side reaction is inhibited, and the product quality of the 4, 5-diiodine-1H-imidazole (I) is improved.

The invention discloses luminous ink for preparing a scintillation layer and a preparation method and application of the luminous ink. The preparation method comprises the steps that cuprous iodide is dissolved in a saturated potassium iodide aqueous solution, hypophosphorous acid is added, and a first mixed solution is obtained; adding the first mixed solution into a polyvinylpyrrolidone solution to obtain a second mixed solution; the preparation method comprises the following steps: dissolving phenyl trimethyl ammonium iodide in a mixed solution of ethanol and acetonitrile to obtain a phenyl trimethyl ammonium iodide solution; quickly mixing a phenyltrimethylammonium iodide solution with the second mixed solution, stirring for a period of time, centrifuging and washing to obtain nano-particles, and dispersing the nano-particles into a solvent; metal copper-based halide nanoparticles are prepared at room temperature by using a single-component solution method, and then the metal copper-based halide nanoparticles are dispersed into a solvent to obtain the luminous ink. And then the luminous ink is uniformly sprayed on a selected substrate, and the thickness and the area can be freely adjusted according to requirements, so that a high-resolution scintillation layer is prepared.

The invention relates to a wafer-level gold etchant which is characterized by being prepared from the following raw materials in percentage by weight: 8-12% of a sodium thiosulfate solution, 28-32% of a thiourea solution, 8-12% of a potassium ferricyanide solution and 48-52% of a potassium iodide solution. The wafer-level gold corrosive liquid disclosed by the invention has the advantages that the wafer-level gold corrosive liquid can be widely applied to a circuit which has a gold film layer thickness of more than 0.5 mu m and has a relatively high requirement on sidetrack control, so that the problems of overlarge sidetrack, line CD (Compact Disc) over-limit and even metal falling caused by corrosion of the original gold corrosive liquid are avoided. When the wafer-level gold etching liquid is used for etching, smaller sidetracking is achieved, a process window is wider, process compatibility is better, and process support is provided for high-speed and high-power photoelectric semiconductors and micro-system devices.

The utility model relates to a device for detecting the content of sodium persulfate in copper dissolving liquid and a water electroplating device, and the detection device comprises a detection container, a silver ion selection electrode, a controller and a copper ion concentration detection component, the first conveying part is used for conveying copper dissolving liquid, the second conveying part is used for conveying silver nitrate standard liquid, the third conveying part is used for conveying potassium iodide standard liquid, at least the silver ion selection electrode and the second conveying part are electrically connected with the controller, and the silver ion selection electrode is arranged in the detection container and used for detecting silver ions in the detection container. The silver ion selection electrode transmits a detection signal to the controller, and the controller is used for controlling starting and stopping of the second conveying part according to the received signal; the measuring method is simple and reliable, the content of the sodium persulfate in the copper dissolving liquid can be effectively detected, the concentration of the sodium persulfate in the copper dissolving tank in the water electroplating device can be monitored in real time, the sodium persulfate is supplemented into the copper dissolving tank in time, and the copper dissolving capacity of the copper dissolving liquid in the copper dissolving tank is guaranteed.

The present application relates to the technical field of corrosion inhibitor, and proposes a thiourea modified imidazoline corrosion inhibitor and a preparation method thereof, which comprises the following components by weight: 40-50 parts of thiourea modified imidazoline, 6-8 parts of isopropyl alcohol, 0.1-0.2 parts of potassium iodide, 10-15 parts of an additive, and 35-40 parts of a solvent; the additive is composed of 2-amino-5-iodobenzoic acid methyl ester and a surfactant. Through the above technical solution, the problem of low corrosion inhibition rate and fast corrosion speed of the thiourea modified imidazoline corrosion inhibitor in the prior art is solved.

The invention provides a heat exciton-based organic scintillator film and a preparation method and application thereof, and belongs to the field of radiation detection. The method comprises the following steps: in a nitrogen atmosphere, dissolving 4, 4 '-(benzo [c] [1, 2, 5] thiadiazole-4, 7-diyl) diphenylamine, potassium iodide and potassium iodate in a mixed solvent for iodination reaction to obtain 4, 4'-(benzo [c] [1, 2, 5] thiadiazole-4, 7-diyl) bis [N, N-bis (4-iodophenyl) aniline]; the preparation method comprises the following steps: mixing 4, 4 '-(benzo [c] [1, 2, 5] thiadiazole-4, 7-diyl) bis [N, N-bis (4-iodophenyl) aniline], polysulfone and an organic solvent to obtain a mixed solution; and dispensing the mixed solution on a substrate to obtain the heat exciton-based organic scintillator film. Through directional design and introduction of four heavy atom iodine, the absorption coefficient of the organic scintillator is improved, and the attenuation life is reduced. And thus, the X-ray imaging effect of the organic scintillator film is improved.

The invention discloses a quaternary ammonium surfactant with a fluorocarbon-silicon-carbon double hydrophobic chain and a preparation method thereof, wherein the preparation method is by N-((dimethylamino) methyl)-4,4,5,5,6,6,6-heptafluoro-3,3-bis(trifluoromethyl) hexanoamide, 3-chloropropylmethyldimethoxysilane, potassium iodide and solvent in a reaction vessel, heating and stirring are completely dissolved to raw material, temperature reaction is continued afterwards, solvent and water are removed by decompression distillation after the reaction terminates, and washed with ethanol until washings do not change color, to obtain a quaternary ammonium surfactant with a fluorocarbon-silicon-carbon double hydrophobic chain;The surfactant is free of perfluorooctanoic acid (PFOA) and perfluorohexanesulfonic acid (PFHxS) substances, possesses environmentally friendly characteristics, will not have an impact on human nervous system, immune system, endocrine system and genetic information etc., can effectively produce foam, with good heat stability, it is possible to improve the foaming performance and the burning resistance of foam fire extinguishing agent. Wetting agent aspect can reduce aqueous solution surface tension, wets low-energy surface.

This invention provides a highly sensitive and rapid nitrite detection kit and method. The kit includes a detection solution, a standard colorimetric card, and test tubes. The molar ratio of sulfuric acid, potassium iodide, and starch indicator is 3:4:39. This invention solves the problems of existing nitrite detection technologies, such as reliance on specialized instruments and laboratory environments, cumbersome and time-consuming operation, inability to meet the needs of on-site, real-time testing, poor matrix compatibility of detection kits, lack of graded warnings based on national food safety standards and toxicological risks, insufficient reagent stability, and difficulty in balancing detection sensitivity and accuracy. It features convenient operation, suitability for on-site, real-time testing; excellent detection performance, accurate and reliable results; stable physicochemical properties of the detection solution, good storage properties; intuitive risk classification, and strong practicality.

The invention relates to an ultra-thin iodine polaroid, a preparation method and an ultra-thin circular polaroid, and the ultra-thin iodine polaroid comprises polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol and iodine and / or potassium iodide dispersed in the polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol in a dissolving manner. According to the invention, iodine and / or potassium iodide are / is dissolved and dispersed in polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol, and the ultrathin iodine polarizer is finally obtained through the steps of material mixing, distillation, extrusion, coating, curtain coating, one-way calendering, stretching and drying. On the first aspect, iodine and / or potassium iodide are dispersed more uniformly by adopting a dissolving and dispersing mode, so that the degree of polarization and the light transmittance of each part of the polaroid are guaranteed; on the second aspect, the polaroid does not need to be clamped and fixed by a cellulose triacetate film, so that the thickness of the polaroid can be further reduced; and thirdly, a retarder is compounded on the ultra-thin iodine polaroid, so that the purpose of manufacturing the ultra-thin circular polaroid is achieved.

The utility model relates to the technical field of etching equipment, and discloses an etching structure which comprises a tank body, a first motor is fixedly assembled at the bottom of the tank body, a sliding groove is formed in the outer wall of the tank body, a lead screw is fixedly assembled on an output shaft of the first motor, a lifting block is connected to the outer wall of the lead screw in a threaded mode, and the lifting block is fixedly connected with the bottom of the tank body. A fixing rod is fixedly assembled at the top of the lifting block, and a top cover is fixedly assembled at the tail end of the fixing rod. According to the etching structure, through the arrangement of the tank body, the first motor, the sliding groove, the lead screw, the lifting block, the fixing rod, the top cover and the storage tank, in the operation process of the equipment, a user can lift a filter screen through operation of the first motor, so that the user can conveniently place a sample; and silicon dioxide and potassium iodide are utilized to soak the sample in the operation process, so that the condition of excessive etching is avoided, the etching precision of a user on the sample is further guaranteed, and the practicability of the equipment is also improved.

The invention relates to the technical field of high polymer material analysis and detection, in particular to a method for detecting the content of polymeric microspheres, which comprises the following steps: (1) obtaining a to-be-detected solution in which suspended particles and organic impurities are removed; (2) mixing the to-be-detected solution with an excessive potassium iodide solution, and adjusting the pH value to obtain a mixed solution; (3) adding excessive sodium hypochlorite solution into the mixed solution to oxidize acylamino in the polymer microspheres to generate chloramine; (4) adding an acetic acid solution to terminate the reaction to generate elemental iodine; (5) titrating the generated iodine through a standard sodium thiosulfate solution, and recording the consumption volume; and (6) calculating the content of the polymer microspheres. By optimizing the sample treatment process and introducing an anti-interference mechanism, the accuracy and reliability of the detection result are remarkably improved.

The application discloses a method for detecting the acidity of a circulating solution of electro-deposited cobalt, which comprises the following steps: removing oxidizing substances in the circulating solution of electro-deposited cobalt by potassium iodide in an acidic medium; reacting the potassium iodide with potassium iodate and acid to generate iodine molecules; titrating with a sodium thiosulfate standard solution until the solution changes from blue or blue-black to the original color of the solution, which is the end point; and calculating the acidity content according to the mass balance. The method can effectively remove the oxidizing substances in the solution to be measured, avoid the interference with the determination of the acidity content, and make the detection result more accurate. The sodium thiosulfate is innovatively applied to the detection of the acidity of the circulating solution of electro-deposited cobalt, and the sodium thiosulfate titration is used to replace the commonly used sodium hydroxide titration method, so that the interference of the original color of the light red solution with the color judgment of the end point of the sodium hydroxide (phenolphthalein as an indicator) is avoided.

The invention discloses a method for rapidly detecting carbon disulfide in a paraffin remover and inhibitor. The method comprises the following steps: 1, preparing a potassium hydroxide ethanol solution; 2, putting the paraffin remover or paraffin inhibitor to be detected into the potassium hydroxide ethanol solution, and uniformly stirring to obtain a detection intermediate solution; 3, acidifying hydrogen peroxide with colorless dilute acid to obtain an acidic hydrogen peroxide solution; 4, placing the dried starch potassium iodide test paper in an acidic hydrogen peroxide solution, waiting for 30 seconds when the starch potassium iodide test paper turns blue and the color does not change any more, and taking out the blue starch potassium iodide test paper; and 5, putting blue starch potassium iodide test paper into the detection intermediate solution in the step 2, and judging whether the to-be-detected paraffin remover or paraffin inhibitor contains CS2 or not according to whether the blue starch potassium iodide test paper fades or not. According to the detection method disclosed by the invention, whether the paraffin remover or the paraffin inhibitor contains CS2 or not is qualitatively judged through color difference of color development reaction, and the method has the advantages of simplicity, high detection efficiency, wide application range and the like.

The application discloses a synthesis method and application of a crystalline BI4O5I2 / amorphous Fe2O3 heterojunction, and belongs to the technical field of catalysts. The synthesis method comprises the following steps: step one, dissolving ferric nitrate and trisodium citrate in deionized water, stirring until completely dissolved, transferring the obtained solution into a reaction kettle to perform a hydrothermal reaction, washing and drying the product after the reaction is completed, and obtaining amorphous Fe2O3; step two, dissolving bismuth nitrate in ethylene glycol, stirring, adding the amorphous Fe2O3 prepared in step one and mixing uniformly, dropwise adding a potassium iodide solution into the mixture, transferring the obtained mixture into a reaction kettle to perform a hydrothermal reaction, washing and drying the product after the reaction is completed, and obtaining the crystalline Bi4O5I2 / amorphous Fe2O3. By adjusting the amount of trisodium citrate and key parameters such as bismuth nitrate in the hydrothermal synthesis process, the heterojunction material is successfully constructed, and the material can be used for photocatalytic removal of Cr(VI) at a concentration of 100mg·L ‑1 Cr(VI).

A nanotag includes a gold core, the gold core is sequentially coated with a silver shell and a gold shell, and a Raman dye is arranged between the silver shell and the gold shell; further it discloses a making method for a high-stability SERS nanotag that includes the following steps: a. adding tetrachloroauric acid into ultrapure water, after boiling, quickly adding trisodium citrate, continuously boiling for a few minutes, stopping heating, and cooling; b. adding hexadecyl trimethyl ammonium chloride (CTAC) into product obtained in the step a, stirring, and then adding ascorbic acid and AgNO3, and centrifugating and resuspending in the CTAC; c. adding CTAC into product obtained in the step b, stirring, adding a Raman dye, ascorbic acid and sodium hydroxide, injecting a mixture of tetrachloroauric acid and potassium iodide, and centrifuge the mixture and resuspending in the CTAC.

The utility model belongs to the technical field of waste gas absorption, and particularly relates to a liquid chlorine storage tank waste gas absorption device which comprises an outer cavity, a cylinder is mounted at the edge of the top side of the outer cavity, a pore plate is mounted on the inner wall of the cylinder, wet starch-potassium iodide test paper is mounted on the top side of the pore plate, and a camera is mounted on the top side of the cylinder in a penetrating manner. A connecting cavity is formed in the outer side of the middle end of the air conveying pipe, a negative pressure motor is installed in the connecting cavity, and three fan blades are installed at the output end of the negative pressure motor. When the liquid chlorine storage tank body leaks chlorine, the leaked chlorine diffuses into the outer cavity and penetrates through the pore plate to be in contact with the wet starch-potassium iodide test paper, the test paper turns blue due to the oxidability of the chlorine, so that chlorine leakage is indicated, the camera monitors the state of the test paper in real time, and once it is found that the test paper turns blue, the test paper stops working. The camera transmits a signal to the control panel, and the control panel starts the negative pressure motor, so that the chlorine leakage condition is found in time, and the negative pressure motor is automatically started to perform gas suction treatment.

The application relates to the technical field of water quality analysis and chemical detection, and provides a total chlorine detection reagent and a preparation method thereof. The total chlorine detection reagent is composed of three kinds of reagents: a first reagent potassium iodide solution, a second reagent DPD chromogenic agent solution and a third reagent composite buffer stabilizer solution. The first reagent potassium iodide solution comprises the following raw materials: 0.15%-0.25% of potassium iodide and the balance of water, with 100wt% as a basis. The second reagent DPD chromogenic agent solution comprises the following raw materials: 0.10%-0.20% of N,N-diethyl-p-phenylenediamine, 0.40%-0.60% of sulfuric acid and the balance of water, with 100wt% as a basis. The third reagent composite buffer stabilizer solution comprises the following raw materials: 6.30%-7.70% of a phosphate buffer, 0.40%-0.70% of a composite stabilizer and the balance of water, with 100wt% as a basis. The total chlorine detection reagent has the characteristics of simple manual operation, reagent saving, strong anti-interference ability and good stability.

The utility model discloses a potassium iodide producing and generating device which comprises a supporting frame and a plurality of reaction kettles, a rotating ring is arranged on the supporting frame in a rotating mode, a driving motor is arranged on the supporting frame through a rotating groove, the driving motor is connected with the rotating ring through a rotating mechanism, and sealing assemblies are arranged on the upper end faces of the reaction kettles through feeding ports. An electric valve is arranged at the bottom of the reaction kettle through a discharge port, a stirring shaft is rotationally mounted on the reaction kettle, a plurality of stirring rods are mounted on the stirring shaft, the plurality of stirring shafts rotationally penetrate through the rotating ring and extend to the upper part of the rotating ring, and the stirring shafts are connected with the support frame through a transmission mechanism. The production efficiency can be improved, a plurality of reaction kettles can be used for processing potassium iodide at the same time, the yield in unit time is greatly increased, and the requirement of large-scale production is met.

The utility model relates to a boric acid cleaning device which comprises a cleaning tank, a stirring paddle is arranged in the middle of the cleaning tank, an output port is formed in the bottom of the cleaning tank and is in butt joint with an automatic centrifugal machine, and a discharging port is formed in one end of the bottom of the automatic centrifugal machine. A pump is arranged at one end of the cleaning tank, one end of the pump is connected with a first steam condensate pipe, the first steam condensate pipe is connected with a steam condensate water source, and the other end of the pump is communicated with the cleaning tank through a second steam condensate pipe. An elevator is arranged at the other end of the cleaning tank, the bottom of the elevator is a feeding port, and the top of the elevator is in butt joint with the top face of the cleaning tank. The cleaning tank is provided with a heat preservation function, waste heat of steam condensate is used for cleaning boric acid containing potassium iodide, and the cleaning and removing efficiency of potassium iodide in boric acid can be improved.

The invention relates to the technical field of polypeptides, in particular to a linear peptide disulfide bond liquid phase cyclization method, potassium triiodide is adopted as an oxidizing agent, linear peptide and the oxidizing agent are dropwise added into a pH buffer solution at the same time for reaction, the cyclization concentration can reach 50-92.5 mg / mL, the solvent volume and the reaction time are greatly reduced, a reaction solution is easy to filter, and the yield is high. Compared with weak oxidants such as air (oxygen), DMSO and hydrogen peroxide, the method has the obvious advantages that the reaction time is short, the reaction is complete, the reaction solvent is less, the column purification efficiency is higher, and the phenomena of peroxidation and polymerization are basically avoided.

The invention provides a modified oleic acid imidazoline-sodium silicate hybrid composite corrosion inhibitor as well as a preparation method and application thereof, and belongs to the technical field of chemical corrosion prevention of oil and gas fields. The preparation method of the corrosion inhibitor comprises the following steps: carrying out condensation reaction on oleic acid and diethylenetriamine in the presence of a water carrying agent xylene and a catalyst p-toluenesulfonic acid to obtain oleic acid imidazoline; in isopropanol, under the catalysis of potassium iodide, oleic acid imidazoline and chlorododecane are subjected to quaternization modification reaction to obtain oleic acid imidazoline dodecyl quaternary ammonium salt; in water, under the action of a cross-linking agent epoxy chloropropane, the oleic acid imidazoline dodecyl quaternary ammonium salt and sodium silicate are subjected to a cross-linking hybridization reaction to obtain the product. The stability is remarkably improved through quaternization modification of the organic oleic acid imidazoline, the organic oleic acid imidazoline and the inorganic sodium silicate are hybridized and crosslinked to form the hybrid composite corrosion inhibitor, synergistic coverage of an organic adsorption film and an inorganic deposition film is achieved, the corrosion rate is remarkably reduced, and the corrosion inhibition performance and environmental adaptability of the corrosion inhibitor are improved.