1134 results about "Chloride sodium" patented technology

The invention discloses piggy creep feed containing composite flavone. The piggy creep feed is prepared from the following raw materials in parts by weight: 13 to 20 parts of expanded corn, 10 to 25 parts of corn, 6 to 13 parts of broken rice, 8 to 12 parts of flour, 8 to 15 parts of whey mist, 3 to 8 parts of soy protein concentrate, 5 to 10 parts of extruded soybean, 0.7 to 3 parts of soya-bean oil, 7 to 12 parts of 46.5-percent bean pulp, 2 to 5 parts of fish meal, 2 to 5 parts of plasma protein powder, 0.3 to 0.7 part of mountain flour, 0.5 to 1.0 part of calcium hydrophosphate, 0.05 to 0.5 part of lysine, 0.05 to 0.3 part of threonine, 0.1 to 0.3 part of sodium chloride, 0.1 to 0.8 part of compound flavone premix compounds, 0.15 to 0.3 part of zinc oxide, 0.03 to 0.06 part of calcium propionate, 0.02 to 0.04 part of ethoxyquin and 1.0 part of suckling pig premix compounds. The invention also discloses a preparation method. The intestinal tract health and the production performance of weaned pigs can be improved.

The invention discloses a fermentation medium for regulating and controlling a clostridium aerovorans target product and a fermentation method of the clostridium aerovorans target product. The medium comprises a basic component and a regulating component, the basic components comprise ammonium chloride, potassium chloride, magnesium sulfate heptahydrate, sodium chloride, monopotassium phosphate, yeast powder, calcium chloride dihydrate, sodium selenite, nickel chloride hexahydrate, biotin, folic acid, pyridoxine hydrochloride, thiamine, riboflavin, nicotinic acid, D-calcium pantothenate, cobalamin, para aminobenzoic acid and lipoic acid; the adjusting component comprises sodium tungstate, ferrous sulfate and sodium molybdate, sodium tungstate and ferrous sulfate have a forward adjusting effect on increasing the yield of acetic acid, ethanol and butanol in the target product, and sodium molybdate has a reverse adjusting effect on the target product. By optimizing the proportion of trace elements in the culture medium, the clostridium metabolism efficiency is improved, synthesis of a target product is regulated and controlled, and the method is particularly suitable for industrial production of acetic acid, ethanol, butanol and the like.

The invention discloses a preparation method for preparing a biomass porous carbon material through high-temperature carbonization of molten salt and application of the biomass porous carbon material, and belongs to the technical field of synthesis of inorganic functional materials. According to the technical scheme, the method is characterized in that sodium chloride and potassium chloride are mixed into mixed salt according to different proportions, then the mixed salt is mixed with enteromorpha biomass according to a certain proportion, the mixture is placed in a porcelain crucible, the mixed salt is added for covering, the porcelain crucible is placed in a muffle furnace to be heated and carbonized, and the porous biomass carbon material is obtained after water washing and drying. The enteromorpha biomass is selected as the raw material, the operation is simple and controllable, the cost is low, batch production can be realized, and the prepared novel porous biomass carbon material has a complex porous structure, a large specific surface area, a very good catalytic effect, strong adsorption capacity and good conductivity, and shows excellent performance when being applied to the field of advanced oxidation.

The invention discloses a saline-alkaline tolerant compound microbial agent and application thereof, and particularly relates to the technical field of microbial soil treatment. The microbial agent comprises Klebsiella, Enterobacter hormaechei and humic acid, the ratio of the components is as follows: Klebsiella: Enterobacter hormaechei: humic acid = 1: (0.5-2): (1-3), and both Klebsiella and Enterobacter hormaechei are obtained by fermentation culture. According to the present invention, the specific pH gradient is adopted for the Klebsiella and the Enterobacter hormaechei, and the segmented fermentation process combining the specific pH gradient with the corresponding gradually-increased sodium chloride concentration is adopted, such that the strain is effectively subjected to the directional domestication so as to maintain the activity and the function in the high-salt and high-alkali extreme environment.

The invention discloses a preparation method of high-viscosity cationic starch, which belongs to the technical field of modified starch, and comprises the following steps: crosslinking epichlorohydrin, ball-milling and cationizing; the epoxy chloropropane crosslinking comprises the following steps: mixing starch, calcium hydroxide and deionized water, stirring at 40-50 DEG C, adding sodium stearoyl lactylate, stirring at 50-55 DEG C, naturally cooling to room temperature, adding sodium chloride and epoxy chloropropane, stirring, dropwise adding a potassium hydroxide aqueous solution, stirring, adjusting the pH value to 6, filtering, taking filter residues, washing and drying to obtain crosslinked starch; in the step of ball milling, calcium hydroxide, sucrose fatty acid ester SE-11 and deionized water are mixed and then subjected to ball milling, and a ball-milled material is obtained; the prepared high-viscosity cationic starch is high in paste liquid viscosity and cationic substitution degree, good in paste liquid viscosity stability, uniform in substitution degree and paste liquid viscosity, high in reaction efficiency in cationization and low in alkali consumption.

The invention provides a geopolymer alkali activator based on a red mud raw material and a preparation method of the geopolymer alkali activator, and belongs to the technical field of geopolymer materials. The method comprises the following steps that under the stirring and heating conditions, red mud and plant ash are gradually added into a sodium chloride solution to form a mixed solution, the mass ratio of the red mud to the plant ash is (3-6): 1, and the solid-liquid mass ratio of the red mud to the sodium chloride solution is 1: (3-6); the pH value of the system and the Na2O release amount are continuously detected, when the pH value of the system is larger than or equal to 12.0 and the change amount within 30 min is smaller than 0.1, steel slag micro powder is added, the adding amount is 1-5% of the total mass of the mixed solution, and stirring continues to be conducted for 20-60 min; and when the pH value of the system is stable and no longer increased within 2 hours or the release amount of Na2O is balanced, carrying out solid-liquid separation to obtain filtrate, namely the geopolymer alkali activator. According to the method, the dependence on traditional high-alkalinity chemical substances can be reduced, and a new way is provided for resource utilization of the red mud.

The application relates to the technical field of silver powder preparation, and discloses a method for producing silver powder by using photovoltaic panel battery pieces, which comprises the following steps: S1, after waste photovoltaic battery pieces and acid liquor are initially mixed, a leaching agent is added for secondary mixing, and filtration is carried out to obtain a silver-containing liquid; S2, sodium chloride is added into the silver-containing liquid to obtain a precipitate; and S3, the precipitate is subjected to reduction treatment to obtain silver powder; and the components of the leaching agent include 8-hydroxyquinoline and / or pyridine-2,6-dicarboxylic acid. Through the technical scheme, the problem of low silver powder yield in the production of silver powder by using photovoltaic battery pieces in the related art is solved.

The invention discloses a preparation process of berberine hydrochloride, and belongs to the technical field of berberine production. The invention relates to a berberine hydrochloride preparation process, which comprises: S1, mixing a ferric sulfate-aluminum sulfate composite salt, sodium chloride, zinc chloride and anhydrous formic acid, pre-activating, adding N-2, 3-dimethoxybenzyl homopiperony lamine hydrochloride, dropwise adding a glyoxal mixed solution, and carrying out a reflux reaction. And S2, cooling the reaction liquid until a solid is separated out, filtering, adding a filter cake and diatomite into purified water, stirring, adjusting alkali, heating, and continuously stirring for 0.5-1 hour. Cooling and filtering, and reserving filtrate; s3, adjusting the acidity of the filtrate, cooling and growing crystals; and filtering, rinsing a filter cake, and carrying out vacuum drying on the filter cake to obtain berberine hydrochloride. The berberine hydrochloride prepared by the method is high in yield and purity, and the preparation process is safe, short in flow and friendly to human bodies and environment.

The invention relates to the technical field of material weather resistance detection, in particular to a weather resistance detection instrument of an anti-corrosion material and a detection technology thereof.The weather resistance detection instrument comprises a detection table, and a supporting column is fixedly connected to the top of the outer side of the detection table; the top of the supporting column is fixedly connected with a pentagonal synchronous telescopic rod. Through the use of the flexible detection assembly, when an anticorrosive material is detected, the material can be detected in more detection modes, and meanwhile, through the mutual cooperation of a plurality of mechanisms, the detection flexibility is further enhanced, the detection result is closer to the reality, and the detection efficiency is improved. Meanwhile, during detection, residual treatment of diluted hydrochloric acid can cause pollution to the surrounding environment, so that after acidity detection is completed, diluted hydrochloric acid is subjected to an acid-base neutralization reaction to become safer and more stable sodium chloride, the sodium chloride solution is utilized again, and the flexibility and environmental protection property of the device are improved.

The invention relates to a method for removing sulfur in sulfur-containing sludge. The method comprises the following specific steps: S1, calcining the sulfur-containing sludge at high temperature; s2, mixing the high-temperature calcined sulfur-containing sludge obtained in the step S1 with a sodium chloride solution, and performing wet ball milling to obtain mixed slurry; s3, filtering the mixed slurry obtained in the step S2, and carrying out solid-liquid separation to obtain a solid phase and a liquid phase; s4, an acid leaching reagent is added into the solid phase obtained in the step S3 for acid leaching, and an acid leaching solution is obtained; and S5, carrying out solid-liquid separation on the acid leaching solution obtained in the step S4 to obtain a solid phase and a liquid phase, and washing and drying the solid phase to obtain sulfur-removed sludge. Compared with the prior art, the method is different from a single ion regulation and control technology through a salt dissolution effect mechanism, so that impurities are more effectively removed.

Systems and methods for capturing and releasing carbon dioxide at least in part via the electrochemical production of acids and / or bases are generally described. An aqueous input stream that includes a dissolved salt such as sodium chloride may be input into an electrolysis assembly to produce acidic and / or basic species. The basic species may promote capture of carbon dioxide (e.g., via direct air capture or from a point source). The acidic species may promote subsequent release of the carbon dioxide to form a carbon dioxide-rich stream. In some instances, at least some streams are concentrated and / or recycled, thereby improving overall system performance and / or efficiency.

The invention relates to the technical field of aluminum oxide preparation, in particular to a method for preparing flaky aluminum oxide by using electrolyte waste liquid and flaky aluminum oxide. The method comprises the following steps: carrying out carbonation reaction on the electrolyte waste liquid by using carbon dioxide to obtain aluminum hydroxide precipitate; washing the aluminum hydroxide precipitate for the first time by using a washing agent to obtain a washed aluminum hydroxide solid-phase substance with a preset sodium content; calcining the washed aluminum hydroxide solid-phase substance to obtain a gamma-type aluminum oxide precursor; carrying out molten salt reaction on the composite molten salt system and the gamma-type aluminum oxide precursor to obtain a flaky aluminum oxide crude product; wherein the composite molten salt system is a mixture of sodium chloride, potassium chloride and sodium sulfate; and carrying out secondary washing on the sheet-shaped aluminum oxide crude product to obtain a sheet-shaped aluminum oxide product. According to the method, the flaky alumina with the high radius-thickness ratio is prepared under fluoride-free and strong acid conditions through a three-step core strategy of resource utilization of waste electrolyte, accurate sodium content control and directional induction of composite molten salt.

Disclosed herein are pharmaceutical formulations including epinephrine that have increased epinephrine retention over long-term storage, e.g., 30-months. In one aspect, a formulation includes: one or more of 0.1 mg / mL of epinephrine or a pharmaceutically acceptable salt thereof provided without any overage, a tonicity regulating agent including 8.2 mg / mL of sodium chloride, a pH adjusting agent including a mixture of 1.5 mg / mL sodium citrate dihydrate, 3.3 mg / mL of citric acid monohydrate, and, optionally, an as-needed amount of sodium hydroxide to maintain the pH level of the formulation within a range of 3.6 to 4.0, 0.075 mg / mL of sodium metabisulfite, and 4 μg / mL of ethylene diamine tetra-acetate disodium. The formulation has an API recovery of 94.5% or more after at least 30 months of storage at long-term storage conditions defined as 25° C.±2° C. at 1 atmosphere. In addition, in another aspect, a formulation includes 1 mg / mL of epinephrine and other ingredients.

The invention discloses a preparation method of 3-chloro-5, 5-dimethyl-4, 5-dihydroisoxazole, which comprises the following steps: taking a hydroxylamine oxygen sulfonic acid aqueous solution and isopentenal as raw materials, carrying out oximation reaction in an organic solvent under an alkaline condition, then directly adding an acid or an organic base catalyst into the reaction system, and reacting for 2-4 hours to obtain 3-chloro-5, 5-dimethyl-4, 5-dihydroisoxazole, thereby obtaining the 3-chloro-5, 5-dimethyl-4, 5-dihydroisoxazole. Under the catalytic action of the catalyst, a cyclization reaction is carried out, after the reaction is finished, an intermediate solution containing 5, 5-dimethyl-4, 5-dihydroisoxazole is obtained, and the next step is directly carried out; and carrying out a chlorination reaction by taking the intermediate solution as a raw material and sodium hypochloride or chlorine as a chlorination reagent, and after the reaction is finished, carrying out post-treatment to obtain the 3-chloro-5, 5-dimethyl-4, 5-dihydroisoxazole. The hydroxylamine oxygen sulfonic acid is used for enabling the isopentenal to be subjected to oximation reaction under the alkaline condition, then cyclization is carried out under the catalytic action of acid or alkali, the 5, 5-dimethyl-4, 5-dihydroisoxazole is generated, and the process has the advantages that the yield is high, the production steps are simplified, and the production cost is reduced.

The utility model discloses a coal chemical industry wastewater crystal salt resource recycling system which comprises a pretreatment softening device, a waste water recycling device and a waste water recycling device, an evaporation concentration device; a first evaporative crystallization system; a first freezing crystallization device; a second evaporative crystallization system; and a second freezing crystallization device. According to different properties of sodium sulfate, sodium chloride and sodium nitrate, the sodium sulfate, the sodium chloride and the sodium nitrate are crystallized and separated through the pretreatment softening device, the evaporation concentration device, the first evaporation crystallization system, the first freezing crystallization device, the second evaporation crystallization system and the second freezing crystallization device, so that the obtained sodium sulfate, the sodium chloride and the sodium nitrate reach industrial recycling standards; therefore, zero discharge and resource utilization of the wastewater are realized.

The invention discloses a method for low-temperature synthesis of an ultra-high nickel single crystal positive electrode material based on a molten salt fluxing agent method, which comprises the following steps: mixing an ultra-high nickel precursor with the nickel content of more than or equal to 90% with a lithium source according to a stoichiometric ratio, then adding a certain mass of sodium chloride (NaCl) as a fluxing agent medium, and fully grinding; the mixed material is subjected to temperature programming sintering in an oxygen-containing atmosphere, and the highest sintering temperature is controlled between 700 DEG C and 850 DEG C; and cooling, washing, drying and sieving the sintered product to finally obtain the small-size ultrahigh-nickel single-crystal positive electrode material with good dispersity. By introducing the low-melting-point molten salt fluxing agent, the growth temperature of the single crystal is remarkably reduced, lithium volatilization and abnormal growth and agglomeration of crystal grains are effectively inhibited, and the obtained single crystal particles are uniform in size (2 microns) and have a good layered structure and electrochemical performance. The method is simple in process, low in cost and suitable for large-scale production of the ultrahigh-nickel single-crystal positive electrode material for the high-performance lithium ion battery.

The application discloses a chlorine-free compound electrolyte for improving magnesium battery performance and a preparation method thereof, and belongs to the technical field of magnesium air battery electrolytes.The chlorine-free compound electrolyte for improving magnesium battery performance is a mixed solution of sodium sulfate, sodium carbonate, 2-methyl imidazole and deionized water.The application first uses sodium sulfate to replace sodium chloride to avoid chlorine ions from accelerating magnesium corrosion;sodium carbonate reacts with a magnesium matrix to form a uniform thin magnesium carbonate layer;and 2-methyl imidazole uses a large Pi bond structure and nitrogen atoms to adsorb positive charge magnesium surfaces to form a dense film layer.The synergistic effect of the three materials can inhibit loose and porous discharge products from being deposited on the anode surface, greatly improve anode utilization efficiency to 87%, and improve the discharge voltage to -1.9 V.The application adjusts the ratio of a solvent to a solute to maximize the improvement of the discharge performance of the air battery;the prepared battery has the advantages of green environmental protection, convenient operation, simple preparation process and the like, and can realize the potential of remote electronic equipment application.

The invention provides a nano liquid soil stabilizer as well as preparation and application thereof. The nano liquid soil stabilizer comprises 6-20 parts of a modifier; 4-20 parts of a stabilizer; 0.5 to 2 parts of nano particles; 10 to 20 parts of an active agent; 1-2 parts of an ion stabilizer; 2-11 parts of a dispersant; 2-15 parts of an accelerant; the stabilizer comprises one or more of isopropanol, ethanol, propylene glycol and ethylene glycol; the nano particles comprise silicon dioxide or aluminum oxide with the particle size of 10-100 nm; the ion stabilizer is one or more of sodium chloride, potassium chloride and sodium sulfate; the accelerant is one or more of triethanolamine oleate, triethanolamine, isopropanolamine and diethanol amine. The soil stabilizer is composed of the specific stabilizer, the nano particles, the ion stabilizer and the accelerant, the organic modifier containing polar groups is introduced, the specific organic modifier is adsorbed and acts on the surfaces of the nano particles by means of intermolecular force, the dispersion effect of the organic modifier is improved, the compactness of soil is remarkably promoted, and the mechanical strength and water stability of the soil are improved.

The application discloses an amino acid cleansing product and a preparation method thereof. The amino acid cleansing product comprises the following raw material components in percentage by mass: a surfactant composition 10-30%, an amphoteric or non-ionic surfactant 1-10%, citric acid 0.05-0.5%, a humectant 1-5%, 0.5-2% isostearyl alcohol, 0.1-0.5% phytosteryl dimer dilinoleate, 0.5-5% sodium chloride, 0.3-1% inulin lauryl carbamate, and the balance is water; the surfactant composition comprises long-chain fatty acyl glycolate. The amino acid cleansing product of the application maintains uniform appearance under high temperature, low temperature and repeated freezing and thawing conditions, has good physical and chemical stability and compatibility, and at the same time, realizes sufficient cleaning and has less damage to the stratum corneum structure, thereby showing good cleaning and mildness.

The invention relates to a detergent capable of removing oil stains and pesticide residues and a preparation method of the detergent, and belongs to the technical field of daily chemical products. The detergent disclosed by the invention is prepared from the following raw materials in parts by weight: 0.4 to 1.7 parts of chelating agent, 250 to 450 parts of water, 70 to 150 parts of sodium alcohol ether sulphate, 20 to 60 parts of dodecyl glucoside, 10 to 40 parts of cocamidopropyl betaine, 10 to 55 parts of nonionic surfactant, 0.2 to 3.5 parts of plant essential oil, 0.2 to 5 parts of glycerol and 1 to 10 parts of sodium chloride. According to the present invention, the good oil stain removing and pesticide residue removing effects are achieved while the less components are utilized; due to the fact that the components are few, the residual risk of the detergent is lower, the risk of harms to human bodies is lower, and pollution to the environment is smaller; the invention provides a better choice for people who increasingly pursue safety and environmental protection, and better caters to the market demand and the national policy of environmental protection.

The application discloses a zinc-containing high-concentration high-salt production wastewater resource utilization method of gliclazide, and relates to the technical field of wastewater, and comprises the following steps: mixing raw water and dilution water according to a proportion and adjusting a pH value, removing zinc ions in the mixed wastewater to obtain treated wastewater; the treated wastewater is introduced into a running branch of a fixed bed resin adsorption device at a preset flow rate, nitrogen heterocyclic organic matter is adsorbed and separated through a resin adsorption column, the COD value of effluent water is monitored, and when the COD value exceeds a set value, the treated wastewater is switched to a standby branch to be evaporated and concentrated to recover sodium chloride; saturated resin is regenerated by countercurrent regeneration with methanol, and methanol washing liquid and water washing liquid obtained through the regeneration are recovered through a rectifying column, and the methanol recovered at the top of the rectifying column is recycled for resin regeneration. The application solves the problems, such as unstable treatment effect, high operation cost and low resource recovery rate, which are commonly present in the prior art when treating the wastewater.

The invention discloses a high-salinity wastewater resource utilization method and device, belongs to the technical field of chemical engineering, and relates to wastewater treatment. The invention relates to a high-salinity wastewater resource utilization method which comprises the following steps: (1) deep removal of organic matters in a high-salinity system: realizing selective separation and removal of the organic matters in wastewater by using a synergistic effect of a flocculating agent and a catalyst; (2) mixed salt separation and recycling: realizing stable separation of sodium chloride and sodium sulfate through the design of MCR-nanofiltration-reverse osmosis multi-membrane coupling synergistic gradient coupling and reflux nesting; and (3) stable control of evaporative crystallization of a complex system: a scale inhibitor, humic acid and a defoaming agent are used, and fractional crystallization and purification are realized through high-temperature firing. According to the method, recycling circulating water can be saved, a large amount of sodium chloride and sodium sulfate are recycled as byproducts, COD and ammonia nitrogen are reduced, the recycling rate of sodium sulfate and sodium chloride is larger than 85%, and the water recycling rate is larger than 95%.

The invention discloses a liquid chromatography method for measuring 5-hydroxymethylfurfural in a calcium gluconate and sodium chloride injection. The method comprises the following steps: measuring the calcium gluconate and sodium chloride injection as a test solution; weighing 5-hydroxymethylfurfural, and adding water to dilute the 5-hydroxymethylfurfural to form a reference solution; carrying out continuous sample introduction on the liquid chromatograph by using the reference substance solution to obtain a system applicability solution chromatogram; when the chromatogram of the applicable solution of the system meets the standard, measuring the test solution and the reference solution, respectively injecting the test solution and the reference solution into a liquid chromatograph, and recording the chromatograms; the content of 5-hydroxymethylfurfural in the calcium gluconate and sodium chloride injection is obtained through a 5-hydroxymethylfurfural content calculation formula. The method has the advantages of strong specificity, high sensitivity, good precision, strong durability and the like, and can quantitatively detect 5-hydroxymethylfurfural in the calcium gluconate and sodium chloride injection, so that the safety of clinical medication of the calcium gluconate and sodium chloride injection is improved.

The utility model provides a system for treating wastewater discharged during potassium salt production in the chlor-alkali industry. According to the utility model, wastewater is separated into produced water containing sodium chloride and potassium chloride and concentrated water containing sodium sulfate by the nanofiltration assembly in advance, so that the content of sodium chloride in the wastewater is reduced, the wastewater can be changed into the produced water for producing sodium chloride, and then the produced water is evaporated and crystallized by the sodium chloride evaporation and crystallization assembly to obtain a byproduct sodium chloride; meanwhile, in order to improve the purity of the byproduct sodium chloride, mother liquor is discharged when the byproduct sodium chloride is prepared, and at the moment, the potassium chloride freezing assembly cools the mother liquor and extracts the byproduct potassium chloride, so that the potassium chloride in the wastewater is indirectly recycled, and therefore, the potassium chloride in the wastewater is recycled. The resource waste is effectively reduced; the utility model belongs to the technical field of wastewater treatment systems.

The present invention provides a method of producing hydrochloric acid, comprising reacting high-temperature gaseous chlorine and water vapour in a carbon-free reverse Deacon reaction (RDR) at a temperature of from about 450 to about 750 °Celsius to produce a mixture of gases comprising hydrogen chloride and oxygen. The chlorine is produced by fusing and electrolysing sodium or magnesium chloride in solid phase. The water vapour comes from thermally decomposing a hydroxide of at least one of calcium, magnesium and iron in the absence of oxygen to produce the water vapour without any admixture of oxygen (e.g., from atmospheric air). The mixture of gases produced by the RDR is immediately contacted with liquid water to dissolve the hydrogen chloride therein, thereby producing hydrochloric acid and a stream of tail gases. Heat is extracted from the hydrochloric acid to maintain its temperature substantially constant until the stream of tail gases is no longer in contact therewith. Thus the chlorine and water vapour are both supplied to the RDR at high purity and require little, if any, preheating. Heat extracted from contacting the mixture of gases with liquid water may be used to keep the RDR within its range of operating temperatures. Oxygen can be separated from the stream of tail gases, and the oxygen-depleted stream can be recycled back to the RDR to give a high percentage conversion of chlorine to hydrogen chloride. The RDR may be uncatalysed and kept within its operating temperature range by radio-frequency volumetric heating in at least one of the IEEE Ku-, K- and Ka-bands. The invention also provides a corresponding apparatus (1h) for producing hydrochloric acid, comprising an electrolytic cell (10) for the electrolysis, a gas-tight kiln (20) for the thermal decomposition, a gas-phase reactor (30) for the RDR, and an absorber (40) for dissolving the hydrogen chloride in the liquid water. The apparatus (1h) may further comprise a separator (80) for separating the stream of tail gases into the oxygen-depleted stream and a stream of oxygen, which may be fed to a steelmaking apparatus (90), for example. The liquid water for dissolving the hydrogen chloride can come from condensing water vapour obtained by drying an aqueous solution of sodium or magnesium chloride or of sodium hydroxide. The apparatus (1h) may therefore also comprise a dryer (60) for drying this aqueous solution, and a condenser (70) for condensing the water vapour thus obtained. Sodium chloride or magnesium chloride in solid phase derived from drying the aqueous solution may be recycled back to the electrolytic cell (10). Electricity for the electrolysis can come from a renewable resource. At least some of the heat for the thermal decomposition may come from the liquid metal which is a co-product of the electrolysis. The invention is therefore highly energy efficient and requires little, if any, extra energy, apart from the electricity required for the electrolysis. The invention also uses commonly available ingredients and produces no greenhouse gases.

The invention relates to a preparation method of a drug intermediate 2-amino-3-hydroxypyridine, and relates to the technical field of medicines. Adding water, acid, sodium chloride, furfural and a sulfamate solution into the reaction kettle, and stirring for reaction; after the reaction is finished, carrying out centrifugal separation to obtain 2-imino-3-hydroxypyridine sulfonic acid; the preparation method comprises the following steps: adding water and 2-imino-3-hydroxypyridine sulfonic acid into a reaction kettle, heating and stirring to react, adding modified amino phosphonic acid type chelating resin, stirring and adsorbing, adjusting the pH value to 6-8 by using an inorganic alkali solution, centrifuging and drying to obtain 2-amino-3-hydroxypyridine; the modified amino phosphonic acid type chelating resin is prepared from amino phosphonic acid type chelating resin, 10 # white oil, aluminum chloride and 5-quinoline sulfonyl chloride. According to the method, the 2-amino-3-hydroxypyridine with higher yield and purity can be obtained, and the method has a good industrial application prospect.

The invention discloses an extraction head and a method for detecting organochlorine pesticides in water by using the extraction head. According to the preparation method, 4-hydroxycarbazole is taken as a functional monomer for electro-polymerization, (benzotriazole-1-yloxy) dipyrrolidine carbon hexafluorophosphate ionic liquid (IL) is taken as a doping medium, and the composite extraction coating is obtained in an electrochemical co-deposition mode. The polymerization 4-Hydroxycarbazole-IL (HBPyU) with the ionic liquid concentration of 25 mu g / mL, the salt solution of 35% saturated sodium chloride solution, the stirring rate of 600 r / min, the extraction temperature of 50 DEG C and the extraction time of 30 min is used as an optimal extraction head, and organochlorine pesticides Hepache and Quintozene in water are analyzed and detected. Therefore, according to the technical scheme, compared with an extraction head only provided with a monomer, the coating material added with the ionic liquid has the best extraction capacity on an analyte, and the beneficial effects of high efficiency and high sensitivity are achieved.

This invention discloses a liquid-liquid extractant for separating chloride ions, its preparation method, and its application, belonging to the field of industrial wastewater treatment and resource utilization technology. This invention introduces a diaza-18-crown-6-ether fragment into the calix[4]pyrrole skeleton via a Click reaction, successfully preparing a diaza-18-crown-6-ether-bridged calix[4]pyrrole acceptor. This acceptor utilizes the strong coordination ability of crown ethers to alkali metal cations and the strong binding ability of calix[4]pyrrole to chloride ions, exhibiting excellent binding ability to alkali metal chlorides, especially showing extremely high selectivity for sodium chloride. Based on this performance, the compound can be used as a liquid-liquid chloride ion extractant in aqueous solutions. This extractant requires no co-extractant during chloride ion extraction, has an extraction efficiency >99%, and the extraction process is simple and rapid. Furthermore, the extractant can be recycled by reverse extraction of alkali metal chlorides in the organic phase using pure water, demonstrating good application value and broad development prospects in the chloride ion treatment of industrial wastewater.

The present invention reduces usage of sodium chloride by adding magnesium chloride, and overcomes problems occurring in using magnesium chloride. The present inventors have found that when magnesium chloride is added instead of sodium chloride to noodle strings and a reducing sugar is further added, preferable well-cooked feeling and appearance are imparted in subsequent production process for instant noodles, and thus, the present invention was accomplished. Specifically, the present invention relates to noodle strings for use in production of instant noodles, the noodle strings containing a raw material powder, magnesium chloride and a reducing sugar.

The present application relates to the field of analytical chemistry, in particular to a method for detecting ten tobacco alkaloids in soil, which uses sodium hydroxide solution and acetonitrile to extract alkaloids in a soil sample, and uses ultra-high performance liquid chromatography-triple quadrupole mass spectrometry to analyze and detect nicotine, nornicotine, myosmine, pseudotropine, anatabine, anabasine, 2,3'-bipyridine, noranatabine, N-methyl pseudotropine and nornicotine, and uses an internal standard method for quantitative analysis. The present application uses sodium hydroxide solution as an alkaloid eluent and acetonitrile as an extractant, which reduces the amount of solvent used, optimizes the operation process, uses sodium chloride to separate the organic phase and the aqueous phase, improves the sample pretreatment efficiency, uses ultra-high performance liquid chromatography-triple quadrupole mass spectrometry to target analysis of 10 tobacco alkaloids, greatly improves the detection sensitivity, and has strong quantitative ability in targeted analysis.