568 results about "Sodium hypochlorite" patented technology

The invention discloses a seed priming method for improving early-stage disease resistance of pepper seeds, which belongs to the field of agricultural planting and comprises the following steps: S1, pre-cleaning: soaking the seeds with sodium hypochlorite and then cleaning the seeds with sterile deionized water; s2, pulse phosphorylation activation treatment: adding seeds and an activation solution into a pressure-resistant polypropylene container connected with a vacuum pipeline, sealing, vacuumizing to-0.08 MPa, maintaining for 5-10 minutes, then recovering to normal pressure, transferring to a constant-temperature oscillator, and carrying out phosphorylation activation treatment; s3, immune training treatment: transferring the seeds subjected to phosphorylation activation treatment to an initiation solution containing UV-inactivated phytophthora capsici spore suspension and H2O2, and carrying out intermittent ventilation treatment; s4, stabilizing treatment: transferring the seeds subjected to immune training treatment into an ascorbic acid solution for treatment, filtering, and drying in the shade to obtain the pepper seeds. According to the invention, the problem of immune response interruption caused by insufficient signal intensity and fast protein turnover when a simulated environment is used for excitation in the prior art is solved.

The invention provides an intelligent chemical adding control method and system, equipment and a storage medium, and belongs to the technical field of intelligent control, the method is applied to a water treatment system, and the method comprises the following steps: based on raw water data, obtaining a first chemical adding amount through a chemical adding amount prediction model; generating an initial dosing amount instruction based on the first dosing amount, and sending the initial dosing amount instruction to a polyaluminum chloride dosing device and a sodium hypochlorite dosing device; obtaining the raw water ion concentration, alumen ustum form data and a floating current value after chemical adding, calculating a first difference value between the raw water ion concentration and a target ion concentration, calculating a second difference value between the alumen ustum form data and target alumen ustum form data, and calculating a third difference value between the floating current value and a target floating current value; and determining a target correction coefficient based on the first difference value, the second difference value and the third difference value, and updating the first dosage based on the target correction coefficient to obtain a second dosage. According to the invention, the dosing precision and adaptability can be improved.

The invention discloses a medical washable high-temperature-resistant modified polyester fiber fabric and a preparation method thereof, and relates to the technical field of fabrics. The medical washable high-temperature-resistant modified polyester fiber fabric prepared by the invention is obtained by blending, spinning and weaving modified polyester and modified mica and activating with sodium hypochlorite; the modified polyester is obtained by grafting organic silicon modified polyester with n-dodecanethiol and then reacting with bromooctylhydantoin; the modified mica is prepared by polymerizing diethyl phosphite and bisphenol S on the surface of the pretreated mica, grafting a vinyl monomer and then reducing; the vinyl monomer is obtained by carrying out a reaction on 1-allyl-3-cyano-6-hydroxy-4-methyl-2-pyridone and an azo salt, and the vinyl monomer is obtained by carrying out a reaction on 1-allyl-3-cyano-6-hydroxy-4-methyl-2-pyridone and an azo salt; the medical washable high-temperature-resistant modified polyester fiber fabric prepared by the invention has good antibacterial, anti-aging and flame-retardant properties.

The invention relates to the technical field of sewage treatment, in particular to a wastewater recycling method which comprises the following steps: cyanide breaking: in an alkaline environment, adding an oxidizing agent to oxidize wastewater; first monitoring: monitoring the oxidation reduction potential and the free cyanide concentration in real time, and adjusting the adding proportion of sodium hypochlorite based on the ORP dynamic range and the cyanide concentration attenuation rate; precipitation: adding hydroxide, and carrying out heavy metal precipitation; second monitoring: acquiring component information in the sewage, and adding sodium hydroxide and sodium sulfide in a gradient compensation manner after triggering judgment; membrane treatment: performing filtration and degradation treatment through a biological membrane; 3, monitoring: dynamically adjusting the aeration intensity and the backwashing period according to the coupling relationship between the pressure difference slope and the sludge concentration; and 4, monitoring: calculating a process capability index, judging whether the process capability index is smaller than a third threshold value, and if so, adjusting the sodium sulfide dosage in the precipitation stage. The method has the effect of reducing resource waste in the wastewater treatment process.

The utility model relates to the field of stirring for preparing sodium hypochlorite, and discloses stirring equipment for preparing sodium hypochlorite, which comprises a stirring tank, a stirring cover is arranged at the top of the stirring tank, a stirring assembly is arranged in the stirring tank, a cleaning assembly is arranged in the stirring tank, and the stirring assembly comprises a first connecting frame. The outer side of the first connecting frame is fixedly connected to the outer side of the stirring tank, a first rotating shaft is rotatably connected to the interior of the first connecting frame, a second belt wheel is fixedly connected to the outer side of the first rotating shaft, a square rod is slidably connected to the interior of the first rotating shaft, and a stirring rod is fixedly connected to the outer side of the square rod. According to the material mixing device disclosed by the utility model, through mutual cooperation of structures such as the motor, the rotating shaft, the rotating shaft I, the square rod, the stirring rod and the roller, effective coverage in the horizontal circumferential direction and the vertical direction is realized, and the uniformity and sufficiency of material mixing are greatly improved; the rapid and uniform mixing of chlorine and a sodium hydroxide solution in the sodium hypochlorite preparation process is facilitated.

The invention relates to the technical field of reclaimed water recycling, and particularly discloses a high-speed service area reclaimed water recycling process which comprises the following steps: step 1, fibrous membrane filtration: filtering wastewater by adopting a fibrous membrane; 2, activated carbon filtration: enabling the effluent in the step 1 to pass through an activated carbon adsorption device; step 3, sodium hypochlorite sterilization: sodium hypochlorite is added into the effluent obtained in the step 2; step 4, intercepting iron and manganese ions: intercepting metal ions from the effluent in the step 3 by using a mixed filter material; step 5, precise filtration: intercepting particulate matters from the effluent in the step 4 by adopting a PP cotton filter element; and step 6, reverse osmosis process: desalting and purifying the filtered water in the step 5 through a reverse osmosis membrane assembly, and collecting reverse osmosis produced water as recycled water reaching the standard. The technical problem that the brake spray water cannot be supplemented to a truck in the service area in time due to the fact that reclaimed water recycled by a reclaimed water recycling technology in the high-speed service area cannot meet the requirement of the brake spray water is solved.

The invention discloses a degradable antibacterial fiber and a preparation method thereof, and belongs to the field of environment-friendly materials. The invention aims to solve the problems that the antibacterial long-term effect and the degradability are unbalanced, and the toxicity of an antibacterial agent conflicts with the biocompatibility. The fiber is composed of bacteriophage antibacterial peptide, polyhydroxyalkanoate, sodium hypochlorite and the like, the antibacterial peptide is derived from a bacteriophage phi 87S / 06 genome, and a mineralizing solution is prepared according to a ratio of CaCl2 to Na2HPO4 to sodium alginate of 3: 2: 2. The preparation method comprises the following steps: constructing double-plasmid engineering bacteria through gene editing to realize synergistic expression of the antibacterial peptide and PHBV, performing fermentation separation to obtain a copolymer, and performing ionic liquid dissolution, boric acid crosslinking, electrostatic spinning and mineralized coating treatment. After the product is washed for five times, the antibacterial rate is greater than 99%, the weight loss rate in 90 days is 82%, the tensile strength is 18MPa, the elongation at break is 25%, the balance of antibacterial long-term effect, degradability and mechanical property is realized, and the antibacterial material is suitable for the fields of medical dressings and the like.

The invention relates to the technical field of organic synthesis, in particular to a preparation method of erythritol sulfate. The preparation method of erythritol sulfate provided by the invention comprises the following two key steps: firstly, carrying out chlorination reaction on ethylene sulfate and chlorine under the catalysis of ultraviolet light to generate chloroethylene sulfate, and then carrying out dechlorination coupling reaction on the chloroethylene sulfate under the action of metal powder such as copper powder, zinc powder, iron powder and magnesium powder to obtain the erythritol sulfate. And the erythritol sulfate is prepared. Compared with the prior art, the novel method for preparing erythritol sulfate provided by the invention has the advantages that the use of sodium hypochlorite is avoided, and the generation of wastewater is reduced; moreover, the method provided by the invention has the advantages of mild reaction conditions, easily available raw materials and high reaction selectivity, the generation of byproducts can be effectively controlled in the reaction process, and the production efficiency and the product purity of the erythritol sulfate are remarkably improved.

The invention provides a reverse osmosis optimal dosing system and method based on ultraviolet sterilization, and the method comprises the following steps: firstly, the system monitors the influent microorganism load and water quality in real time, dynamically calculates the required ultraviolet dosage, and precisely adjusts the power of an ultraviolet sterilizer; secondly, according to the residual microorganism risk and the water inlet flow after ultraviolet treatment, the feeding amount of an oxidizing bactericide (such as sodium hypochlorite) is accurately adjusted according to a PID control strategy combining feedforward and feedback; meanwhile, according to the oxidation-reduction potential of the sterilized water body, a reducing agent (such as sodium hydrogen sulfite) is intelligently added to protect the reverse osmosis membrane. And finally, efficient cooperation of ultraviolet physical sterilization and chemical sterilization is achieved, on the premise that strict control over microbial pollution is guaranteed, the consumption and operation cost of chemical agents are remarkably reduced, generation of by-products is reduced, the service life of a reverse osmosis membrane is prolonged, and the intelligent level of system operation and the overall economic benefits are improved.

The invention relates to the technical field of sodium hypochlorite generators, and discloses a sodium hypochlorite generator with an automatic dilute brine proportioning device. One end of the inclined plate is connected with the side wall of the saline water generating device; a flow guide pipe; and a push rod; the non-iodized edible salt added into the salt water generating device sequentially rolls on the inclined plates, so that the phenomenon that the salt is piled and caked due to the fact that a large amount of non-iodized edible salt is added at a time can be avoided; water sprayed from the liquid spraying opening to the inclined plates can impact salt blocks attached to the inclined plates, downward rolling of the salt blocks is accelerated, on one hand, the salt blocks are premixed with the attached salt blocks, and on the other hand, flowing force of the water sprayed from the liquid spraying opening can drive the transmission assembly to drive the push rod to do reciprocating rectilinear motion on the inclined plates, so that the salt blocks attached to the inclined plates are fully scraped off, and the salt removal efficiency is improved. It is ensured that the added non-iodized edible salt can be fully mixed with tap water after being scattered in batches and cannot be left on the inclined plate to cause waste, and then the preparation efficiency of the saturated salt water is ensured.

The invention discloses a ceramic membrane cleaning agent which comprises an agent A, an agent B, an agent C and water, wherein the agent A comprises sodium dodecyl sulfate and a polyoxyethylene ether nonionic surfactant; the agent B comprises potassium pyrophosphate and ethylenediamine tetraacetic acid tetrasodium salt; the agent C comprises sodium hypochlorite. The invention further discloses a preparation method of the ceramic membrane cleaning agent. The problems that an existing ceramic membrane cleaning agent is common in cleaning effect, and the service life of a ceramic membrane is affected due to incomplete cleaning are solved. The agent A is selected from sodium dodecyl sulfate and a polyoxyethylene ether nonionic surfactant, and the sodium dodecyl sulfate and the polyoxyethylene ether nonionic surfactant both have an emulsifying effect and good compounding property and can enhance the emulsifying effect through a synergistic effect; in the agent B, the potassium pyrophosphate and the tetrasodium ethylenediamine tetraacetate have a synergistic effect, and the potassium pyrophosphate and the tetrasodium ethylenediamine tetraacetate are matched, so that the cleaning effect can be improved, and the decontamination capability can be enhanced. The agent C is matched with the agent A and the agent B, so that the overall stability of the cleaning agent is ensured. Therefore, the ceramic membrane has antibacterial, efficient decontamination and efficient emulsification performance at the same time.

The invention belongs to the technical field of sodium hypochlorite production, and particularly relates to a method for producing sodium hypochlorite. A method for producing sodium hypochlorite comprises the following steps: adding a compound additive into a sodium hydroxide aqueous solution, and uniformly stirring to obtain a compound alkali-containing raw material solution; respectively introducing the composite alkali-containing raw material solution and chlorine into the micro-channel reactor through a metering pump, and controlling reaction conditions to generate a reaction solution containing sodium hypochlorite; introducing the reaction liquid into a ceramic membrane separation device, separating and removing unreacted solid impurities and by-product salts, and collecting permeate; unreacted sodium hydroxide is recycled and reused; and detecting the permeate liquid to be qualified to obtain a sodium hypochlorite finished product. According to the invention, four key links of compound additive addition, microchannel reaction, ceramic membrane separation and resin recovery are organically linked to form a systematic solution. Aiming at the core pain points of insufficient reaction, more byproducts, raw material waste, equipment corrosion and the like in the traditional process, the product purity is improved through the synergistic effect of all links.

The invention provides a fracturing fluid base fluid, a water-based fracturing fluid and a preparation method of the water-based fracturing fluid, and relates to the technical field of oil fields. The fracturing fluid base fluid is prepared from the following components in percentage by mass: 97.3 percent to 98.1 percent of produced water, 0.5 percent to 0.55 percent of hydroxypropyl guar gum, 0.004 percent to 0.005 percent of sodium hypochlorite, 0.015 percent to 0.03 percent of citric acid, 0.1 percent to 0.18 percent of dodecyl dimethyl benzyl ammonium bromide, 0.2 percent to 0.3 percent of ethylenediamine tetraacetic acid disodium salt, 0.3 percent to 0.5 percent of a temperature stabilizer, 0.6 percent to 0.8 percent of a pH value regulator and 0.2 percent to 0.3 percent of a cleanup additive; the pH value of the fracturing fluid base fluid is 7.5. The fracturing fluid base fluid prepared from the produced water has the advantages of rapid adhesion, no precipitation, no weak crosslinking and no floccule phenomenon, so that the guar gum fracturing fluid prepared from the fracturing fluid base fluid has the characteristics of self-adaption to a reservoir, ultralow damage and high performance.

A sodium hypochlorite on-line preparation and on-line dilution fusion feeding system comprises a sodium hypochlorite generator and a feeding lifting pump, at least two transfer storage tanks are connected between a liquid outlet pipe of the sodium hypochlorite generator and a liquid inlet of the feeding lifting pump in parallel through pipelines, at least one of the transfer storage tanks is a dual-purpose storage tank, and the other transfer storage tank is a dual-purpose storage tank. Valves are arranged on a liquid inlet pipe and a liquid outlet pipe of the dual-purpose storage tank; the dual-purpose storage tank is respectively communicated with a liquid outlet of the commercial sodium hypochlorite lifting pump and a liquid inlet of the online proportional dilution device through pipelines with valves; the liquid inlet of the on-line proportional dilution device is also communicated with a soft water inlet pipe; and a liquid outlet of the on-line proportional dilution device is communicated with a liquid outlet pipe of the sodium hypochlorite generator through a pipeline with a valve. According to the system, the preparation, dilution and adding processes of sodium hypochlorite are integrated together, so that the efficiency and the safety are improved, the equipment cost and the occupied area are reduced, and deterioration waste caused by inconvenience in use of high-concentration commodity sodium hypochlorite is avoided.

The invention belongs to the technical field of cultivation and utilization of herba artemisiae annuae, and particularly relates to a method for increasing the breeding success rate of herba artemisiae annuae seeds in alpine regions. The method comprises the following steps: cleaning the fluffy wormwood seeds, then adding the fluffy wormwood seeds into an acid solution, carrying out acid soaking treatment, and then washing the fluffy wormwood seeds to obtain the fluffy wormwood seeds subjected to acid soaking; the method comprises the following steps: adding the acid-soaked artemisia splendens seeds into somatotropin, carrying out growth promoting treatment, washing with water, treating the seeds with alcohol and sodium hypochlorite in sequence, and finally carrying out seed germination treatment. According to the method, through the synergistic effect of the steps, the germination rate of the artemisia splendens seeds can be remarkably increased, the germination time lag is greatly shortened, robust growth of seedlings is promoted, and the problem of large-scale propagation of the artemisia splendens seeds is effectively solved.

The present invention relates to a method for preparing lyocell fibers by using bagasse as a raw material. The method comprises the following steps: step A, crushing bagasse to 40-80 mesh, so as to obtain bagasse powder; step B, feeding the bagasse powder obtained in step A into a first solution, and reacting same, so as to obtain pretreated bagasse powder after the reaction is finished; step C, feeding the pretreated bagasse powder obtained by the treatment in step B into a second solution, and reacting same, so as to obtain bagasse cellulose after the reaction is finished, wherein the second solution comprises 15-17.5 mol / L of glacial acetic acid, 10-15 g / L of sodium hypochlorite and the balance of water; step D, feeding the bagasse cellulose obtained by the treatment in step C into an aqueous solution of NMMO with a mass fraction of 85-88%, and stirring same in a reaction kettle at 90-110°C under vacuum conditions for 3-5 h to dissolve same, so as to obtain a transparent spinning solution, wherein the mass fraction of the bagasse cellulose in the solution is 6-10%; and step E, feeding the spinning solution obtained in step D into a spinning system for spinning. The process of the present invention is simpler and more environmentally friendly, and can reduce costs.

The invention discloses a high-barrier antibacterial plastic packaging film and a preparation method thereof, belongs to the technical field of film processing, and aims to solve the technical problem that the antibacterial property and barrier property of a plastic packaging film need to be further improved in the prior art. The composite material specifically comprises the following components in parts by weight: 60-80 parts of linear low-density polyethylene, 10-15 parts of a modified compatibilizer, 4-6 parts of a modified antibacterial capsule and 1-3 parts of an auxiliary additive. The preparation method comprises the following steps: oxidizing 2-methyl-2-acrylic acid-2, 2, 6, 6-tetramethyl-4-piperidinyl ester with sodium hypochlorite to obtain a modified precursor, and carrying out free radical polymerization reaction on the modified precursor, low-density polyethylene, glycidyl methacrylate and vinyl heptafluorobutyrate to form a compatibilizer with a block structure. The antibacterial property and barrier property of the plastic packaging film are improved, and the mechanical property of the plastic packaging film is also improved.

The invention discloses a method and system for controlling the concentration of sodium hypochlorite in a vegetable cleaning pool based on an online spectrum, and relates to the field of food processing. The system comprises a spectrum detection module, a filtering module, an intelligent control module, a dosing module, a backflushing module and a data management module. The spectrum detection module detects at the wavelength of 255 nm and eliminates low-temperature interference in combination with a temperature sensor and a compensation algorithm; the filtering module adopts a two-stage series structure to remove impurities; the intelligent control module processes data, calculates the concentration through a concentration regression model, controls the dosing module to perform accurate dosing when the concentration is lower than a preset value, and triggers dilution when the concentration is higher than the preset value; the back-flushing module triggers back-flushing maintenance of a filter element at regular time or under differential pressure; and the data management module stores the display data and supports parameter adjustment. The detection precision and the anti-interference capability are improved, the maintenance cost is reduced, accurate concentration regulation and control are realized, and the disinfection effect is guaranteed.

The invention belongs to the technical field of sodium hypochlorite generators, and particularly relates to an improved sodium hypochlorite generator which comprises a device table with an opening in the center, a reaction tank is arranged above the device table, and the upper end and the lower end of the reaction tank are rotationally connected with an upper end plate and a lower end plate in a sealed mode respectively. Four fixing blocks distributed in a rectangular shape are fixedly connected between the lower end plate and the inner wall of the device table, two electrolysis reactors are installed between the upper end plate and the lower end plate, and each electrolysis reactor comprises a reaction cylinder fixedly connected between the upper end plate and the lower end plate; the peripheral surface of the reaction cylinder is communicated with a liquid outlet pipe and a liquid inlet pipe which are distributed up and down, and one ends, far away from the reaction cylinder, of the liquid outlet pipe and the liquid inlet pipe respectively extend out of the upper end plate and the lower end plate. The device has the advantages that by integrating the functions of temperature control, reverse pole descaling, dynamic stirring, safe discharging and the like, high efficiency, stability and safety of sodium hypochlorite preparation are achieved, and a reliable disinfection solution is provided for the water treatment industry.

The invention discloses a seed priming method for improving the early disease resistance of pepper seeds, which belongs to the field of agricultural planting and comprises the following steps: S1, pre-cleaning: soaking the seeds in sodium hypochlorite and then washing with sterile deionized water; S2, pulse phosphorylation activation treatment: adding seeds and activation solution to a pressure-resistant polypropylene container connected to a vacuum pipeline, evacuating to 0.08 MPa after sealing, returning to normal pressure after maintaining for 5-10 minutes, and then transferring to a constant temperature oscillator for phosphorylation activation treatment; S3, immune training treatment: transferring the seeds after phosphorylation activation treatment to a priming solution containing a suspension of UV-inactivated Phytophthora capsici spores and H2O2, and intermittent ventilation treatment; S4, stabilization treatment: transferring the seeds after immune training treatment to an ascorbic acid solution for treatment, filtering, and drying in the shade to obtain pepper seeds. The present invention solves the problem of immune response interruption caused by insufficient signal intensity and rapid protein turnover when stimulating using a simulated environment in the prior art.

The application provides a method for detecting the content of sodium hypochlorite in chicken, and belongs to the technical field of quantitative detection. Terahertz spectrum testing is performed on a dried chicken sample to obtain the peak height of a sodium hypochlorite characteristic peak; then, according to a standard curve and the peak height of the sodium hypochlorite characteristic peak, the content of sodium hypochlorite in the chicken is obtained; the frequency of the sodium hypochlorite characteristic peak is 1.10 THz or 1.25 THz; and the standard curve is a fitting curve of the mass content of sodium hypochlorite in the chicken and the peak height of the sodium hypochlorite characteristic peak. Different molecules exhibit different absorption peaks in terahertz absorption spectrum, and the application detects the content of sodium hypochlorite in chicken by using a terahertz spectrum method, and obtains the content of sodium hypochlorite in chicken by using the fitting relationship between the peak height of the sodium hypochlorite absorption peak and the content of sodium hypochlorite. The method provided by the application is simple, and can quickly and accurately obtain the content of sodium hypochlorite in chicken.

The invention relates to ultrasonic-assisted equipment for preparing sodium ferrate from red mud, which comprises a reaction kettle, a heating plate, a vibrating plate, a red mud alkaline leaching residue slurry storage tank, a sodium hypochlorite storage tank, a temperature measuring element and a stirrer device, and is characterized in that the heating plate and the vibrating plate are sequentially arranged at the bottom of the reaction kettle, and the heating plate is attached to the bottom of the reaction kettle; an ultrasonic vibration head is arranged at the bottom of the vibration plate; the temperature measuring element is arranged on the reaction kettle through a connecting piece, and a temperature measuring probe of the temperature measuring element extends into the reaction kettle; the stirrer device is arranged above the reaction kettle through a fixed bracket, and a stirring rod of the stirrer device extends into the reaction kettle; the red mud alkaline leaching residue slurry storage tank is communicated with the red mud alkaline leaching residue slurry inlet; and the sodium hypochlorite storage tank is communicated with the sodium hypochlorite feeding hole. The sodium ferrate prepared by the method is high in concentration, high in generation rate and high in process safety, and ultrasonic equipment is simple in structure and low in cost.

The invention discloses a method for removing diatom through combination of pre-oxidation of sodium hypochlorite and potassium permanganate and coagulative precipitation enhancement, and belongs to the technical field of water treatment. The method comprises the following steps: adding sodium hypochlorite and potassium permanganate into diatom-containing water step by step, and carrying out a combined pre-oxidation reaction for 30-60 minutes; and then adding a coagulant to react, and standing and precipitating for about 60 minutes, so that the diatom cells in the water can be efficiently removed. Aiming at the problems of low diatom oxidation removal rate, poor coagulation effect, filter tank blockage and the like in a conventional water treatment process, straight-chain diatom cell membrane structures are primarily destroyed through sodium hypochlorite, negative electricity groups on cell surfaces are exposed, and a favorable reaction interface is provided for potassium permanganate; in-situ manganese dioxide generated by further adding potassium permanganate can coat cells and neutralize surface charges, and an ideal condition is created for the coagulant to form an adsorption bridge, so that a coagulation interface is remarkably improved, and the removal efficiency of diatom cells is improved.

The utility model discloses a sodium hypochlorite adding pump which comprises a body component, a water pump component and a water pump component, and the body component comprises a pump body, a pipe body, a transfer pipe, a barrel body and a supporting base; the supporting part comprises a first clamping ring, a second clamping ring, a fixing block, a supporting rod, an inner groove, a fixing ring, a sliding block, a sliding groove and an extension rod; the first clamping ring and the second clamping ring surround the two ends of the outer surfaces of the pipe body and the transfer pipe, one end of the outer surface of the first clamping ring and one end of the outer surface of the second clamping ring are fixedly connected with the extension rod, the supporting rods are symmetrically connected to the top of the barrel body, the tops of the supporting rods are fixedly connected with the fixing block, and the interior of the fixing block is a cavity. The problems that when an existing sodium hypochlorite feeding pump is actually used, pipe bodies are usually connected for use, the outer portions of the connected pipe bodies are not provided with any supporting structures, relative impact force can be generated during delivery of factory water, the joints of the pipe bodies are loosened after long-time use, and the service life of the pipe bodies is affected are solved. And even leakage occurs under severe conditions.

The invention discloses a preparation method and application of a Cu-BNNs chemiluminescent probe for detecting nicotine. Boron nitride and copper chloride dihydrate are used as raw materials, oil bath heating is carried out in N-methyl pyrrolidone (NMP) to synthesize a Cu-BNNs probe, the Cu-BNNs probe can generate strong chemiluminescence signals with nicotine and sodium hypochlorite, a chemiluminescence detection platform of nicotine is constructed based on the strong chemiluminescence signals, and the chemiluminescence detection platform is used for detecting the nicotine. The method can be used for detecting the content of a nicotine solution and the content of nicotine in cigarette smoke. The method has the advantages of high sensitivity, strong anti-interference capability, low detection cost, simplicity and convenience in operation and the like.

The invention discloses a hydrogen separation device and a hydrogen discharge system of a sodium hypochlorite generator, relates to the field of sodium hypochlorite production, and solves the problem of low separation efficiency of a single-stage tank body in the prior art. The bottom of the separation tank body is provided with a liquid outlet, and the top is provided with an exhaust port; the device further comprises a feeding pipe, the feeding pipe is arranged in the tank body of the separation tank body, and the feeding pipe is provided with a discharging port; a separation unit is arranged below the discharge hole; the separation unit comprises a separation main body; the separation main body is conical; a separation tank with an upward opening is arranged in the separation main body; the separation tank is conical; a gas-liquid mixture flowing out of the discharge port enters the separation tank for gas-liquid separation, and hydrogen is discharged through the exhaust port; liquid in the conical cavity of the separation unit is gathered at the bottom of the tank body after overflowing and is discharged through a liquid outlet. The purpose of improving the separation efficiency is achieved.

The invention provides high-whiteness and low-isoflavone-content soybean protein isolate for infant food, and belongs to the technical field of infant complementary food. Comprising the following components in percentage by mass: 92.5%-6% of soybean protein isolate, 6.0% of maltodextrin, 0.8% of sodium carboxymethyl cellulose, 0.1% of sucralose and 0.6% of ethyl vanillin, the risk of residual chemical bleaching agents (hydrogen peroxide and sodium hypochlorite) is avoided, the content of isoflavone is reduced to be less than or equal to 10mg / kg, the hidden danger of endocrine interference is reduced, the damage of high temperature and strong acid / alkali to a protein structure is reduced, and the quality of the protein is improved. The energy consumption is reduced through low-temperature sterilization and vacuum freezing dehydration, the whiteness is greater than or equal to 85%, the sensory requirements are met, the protein content is greater than or equal to 90%, the purity is high, and the protein is suitable for being used as a high-quality protein source of infant food; the green solvent and physical / biological decoloration reduce chemical pollution, and the process is more environment-friendly.

The invention discloses a preparation method of porous carbon nanofibers for carbon dioxide capture performance research. The preparation method comprises the following steps: step 1, taking polyacrylonitrile as a base material and polyvinylpyrrolidone as a pore-forming agent, and carrying out electrostatic spinning to obtain composite nanofibers; step 2, soaking the composite nanofibers prepared in the step 1 in sodium hypochlorite to obtain porous nanofibers; 3, performing high-temperature carbonization treatment on the porous nanofibers prepared in the step 2 to prepare porous carbon nanofibers; and step 4, carrying out drying treatment on the porous carbon nanofiber prepared in the step 3. The problems of high technical energy consumption and high cost in the prior art are solved.

The invention discloses a cyanide breaking process device based on spectrum on-line monitoring, which comprises a spectrum on-line monitoring module, a cyanide breaking reaction tank group, a reaction control system, an intelligent decision-making module and an executing mechanism, and is characterized in that the spectrum on-line monitoring module is composed of a micro multichannel spectrum sensor provided with an array type LED light source and an independent light intensity feedback circuit; a bypass circulating pipeline is connected with the main treatment system and a filter is arranged to eliminate the interference of suspended matters; the cyanide breaking reaction tank group comprises an alkaline oxidation tank and an acid decomposition tank which are connected in series, each tank body is internally provided with a stirrer, a liquid level monitoring unit, a temperature control unit and a stirrer driving unit, the acid decomposition tank is provided with a PH sensor, and the intelligent decision module integrates an edge calculation unit and a cloud database, receives spectral data in real time and outputs a control instruction; the execution mechanism is composed of a sodium hypochlorite metering pump connected with an intelligent decision-making module, a PH regulator adding device and a central control unit containing a safety interlocking module.

The application discloses a kind of synthesis methods of high-purity electronic grade sodium hypophosphite, dilute phosphine gas is passed into to the mixed solution of sodium hypochlorite and sodium hydroxide that has been pre-cooled with sufficient stirring, and sodium hydroxide is added to carry out reaction;After reaction is completed, filtration, concentration, crystallization, separation are carried out, and the obtained product is purified by resin to obtain high-purity electronic grade sodium hypophosphite product.Compared with the traditional "yellow phosphorus-lime-soda" oxidation-reduction method for preparing industrial grade product and then preparing high-purity electronic grade sodium hypophosphite, the product purification difficulty of the application is low, by using 7N grade ultra-high purity phosphine without any metal impurities, the problem that arsenic, silicon, germanium, nickel, chromium and other metal impurities cannot be completely removed by traditional process can be effectively solved.In addition, the application also has the advantages of effectively solving the problem of three wastes, high recycling rate of by-products, high economy and the like.