109 results about "Iodine vapor" patented technology

The present invention provides an iodine vapor sampling apparatus under a high temperature and high humidity environment. The apparatus comprises a pipeline sampling system, a gas washing system, a condensation system and a bypass system, wherein the pipeline sampling system comprises a break valve, a pressure reduction valve and a connection pipeline, the gas washing system comprises multiple stage absorption bottles and a KI absorption solution filled in the absorption bottle, the condensation system comprises a condensation water tank connected with the final stage absorption bottle, a drying agent box positioned on the rear of the condensation water tank, and a first flow meter connected on the rear of the drying agent box, and the bypass system comprises a first three-way valve, a second three-way valve, a second flow meter, a bypass absorption bottle and an absorption liquid in the bypass absorption bottle. The apparatus has characteristics of simple structure and easy operation, and can be particularly used for measurement of other substances having a suitable absorption liquid under a high temperature and high humidity environment.

The invention belongs to chemical technical field, in particular to a chemical method for semiconductor film materials of ternary wide bandgap compound of synthesis of copper-zinc iodide. The method is that putting the copper-zinc alloy film into iodine vapor with a temperature of 45 DEG C to 80 DEG C for co-oxidation reaction of the copper-zinc alloy. The reaction time takes 3 to 8 hours. After reacting for certain time, Cu2ZnI4 films can be produced in situ on the surface of substrate, and that is the semiconductor film materials of the synthesis of the copper-zinc iodide. The preparation method does not require organic solvents to participate in the reaction or reaction medium. The crystal is crystallized well. The product can be used directly without complicated processing. The method has the advantages of simple operation, rapid reaction, better environmental protection, low energy consumption, low cost and good reproducibility. In addition, a film can be directly formed on the substrate surface in the method. The material is more beneficial for the application in photoelectric conversion devices.

The invention discloses a measuring system for radial deformation of a nuclear fuel cladding tube under high temperature iodine vapor environment. The measuring system for the radial deformation of the nuclear fuel cladding tube under the high temperature iodine vapor environment includes a cladding tube, double layer airtight hot chambers for placing the cladding tube, a sealing cover and a sealing base which are arranged at the two ends of the cladding tube, a cylindrical cavity of the upper layer hot chamber, an electronic stretcher extending to the cladding tube, a loading sensor installedon a push rod of the electronic stretcher and a temperature sensor arranged at the bottom of the cladding tube. The measuring system further includes a laser displacement sensor, an air inlet tube and an air outlet tube, and the laser displacement sensor, the air inlet tube and the air outlet tube are arranged outside of visual glass of the two sides of the lower hot chamber. The electronic stretcher is subject to axial compression and radial expansion in the cladding tube, and iodine vapor flow through the cylindrical cavity and the cladding tube. The measuring system for the radial deformation of the nuclear fuel cladding tube under the high temperature iodine vapor environment can reliably and effectively realize the measurement of the radial deformation of the cladding tube under thehigh temperature iodine vapor environment. Steady temperature required by the cladding tube is provided by using the hot chambers. Only iodine vapor environment of inner surface of a cladding is realized by using various sealing technologies. The measurement of the radial deformation of the cladding tube is realized through the laser displacement sensor by using the visual glass of the two sides of the lower layer hot chamber.

The invention provides a polythiophene nanometer conductive composite material and a preparation method of the polythiophene nanometer conductive composite material based on the advantages of attapulgite of special crystal structure, physico-chemical property and low price, solving the shortcoming in the prior art that the polythiophene-inorganic nanometer composite material is high in cost. The polythiophene nanometer conductive composite material is an iodine-doped porous rod shaped silica/polythiophene amorphous conductive composite material. The preparation method of the polythiophene nanometer conductive composite material comprises the following steps in sequence: dissolving a thiophene monomer into an organic solvent I; adding purified nano attapulgite and an oxidant to an organic solvent II; dropping the mixture to the thiophene solution in an one-by-one way so as to prepare the thiophene/polythiophene nano composite material; and placing the prepared thiophene/polythiophene nano composite material into the iodine vapor to prepare into the porous rod shaped silica/polythiophene amorphous conductive composite material.

The invention discloses a segmented tightness testing method. A hole to an inner welding seam is drilled on a well-welded segmented outer wall surface; the periphery of the hole is welded with an air testing device for realizing inner air supply; a leakage detection device is arranged on a welding strip for detection a leakage point; the air testing device is connected with an air compressor via an air tube; the air inlet of the air compressor is provided with an atomizer loaded with iodine water, and thus air sucked by the air compressor contains iodine vapor for filling the welding seam with iodine-containing air; the air testing device fills air inside the welding seam, the leakage detection device moves on the welding strip for testing whether air leakage exists; and the leakage detection device is internally provided with starch water, in case of air leakage, a color is changed as the air contains iodine, and the detection effects are obvious.

The present invention relates to a porous silica/ZSM-5 molecule sieve catalyst preparation method, and belongs to the technical field of shape selecting catalysis. The preparation method comprises: dispersing a ZSM-5 molecule sieve in ethanol, adding purified nanometer attapulgite to a hydrophilic organic solvent, slowly adding the obtained mixed solution to the ZSM-5 molecule sieve ethanol dispersion to prepare an attapulgite/ZSM-5 molecule sieve, and placing the prepared attapulgite/ZSM-5 molecule sieve in iodine vapor to prepare the porous silica/ZSM-5 molecule sieve catalyst. According to the present invention, the attapulgite/ZSM-5 molecule sieve is placed in the iodine vapor so as to provide a doping effect, such that the attapulgite can be converted into porous silica, the number of acid active sites on the outer surface of the ZSM-5 molecule sieve is reduced, isomerization reactions of p-xylene on the outer surface of the molecule sieve is effectively reduced, and selectivity on p-xylene is further increased.

The invention discloses a maintenance-facilitating box-type substation, relates to the technical field of power transmission and transformation, and mainly aims at cooling the substation box body andpreventing the substation box body from directly contacting water. The main technical scheme is as follows: the maintenance-facilitating box-type substation comprises a box body and an air flow circulation part. A transformer is arranged in the box body. The box body is provided with a box wall, and the box wall is provided with a hollow chamber for filling iodine powder. The air flow circulationpart comprises a separating mechanism, a heat dissipating element and a collector. The separating mechanism is provided with a first inlet, a first outlet and a second outlet. The collector is provided with a second inlet and a third outlet. The first inlet is connected with the hollow chamber and used for guiding the iodine powder and the air to the separating mechanism. The separating mechanismis used for separating iodine vapor and the iodine powder. The first outlet is connected with the hollow chamber and used for guiding solid iodine back to the hollow chamber. One end of the heat dissipating element is connected with the second outlet, and the other end is connected with the second inlet. The third outlet is connected with the hollow chamber.

The invention discloses an analytical pure potassium iodide preparation method using waste liquid containing iodine. The method comprises the steps of at first reducing all inorganic iodine of different forms in waste liquid containing iodine into iodide ions, using hydrogenperoxide as oxidant, under 80 DEG C oxidizing the iodide ions directly into iodine elements, subliming and overflowing, making sure that the iodine elements do not get oxidized further, breaking iodine clock reaction, after KOH absorbing iodine vapor, generating IO3<->, using hydrazine for reduction, making sure that no other impurity ions are introduced into potassium iodide solution, at last acquiring the analytical pure potassium iodide. The method is applicable for the treatment of waste liquid containing iodine of any forms and concentrations. The method has the advantages of being environment-friendly and economical, being simple and convenient to operate, low in cost, high in recyclability, and causing no secondary contamination during the whole process. The method can be used for the direct preparation of analytical pure potassium iodide, thus avoiding the safety problems of iodine storage and iodine vapor.

The invention discloses a covalent organic framework material as well as a preparation method and application thereof, and relates to a covalent organic framework material as well as a preparation method and application thereof. The technical problem that an existing covalent organic framework material is only suitable for iodine vapor adsorption and long in iodine adsorption equilibrium time is solved. The structural unit of the covalent organic framework material is shown in the specification. The covalent organic framework material is obtained by reacting 2-(4-aminophenyl)-1H-phenanthrene [9, 10-d] imidazole-6, 9-diamine with isophthalaldehyde, and the covalent organic framework material is used for adsorbing iodine vapor or iodine in an organic solvent III. The maximum adsorption capacity for iodine vapor can reach 1.69 g.g <-1 >, adsorption equilibrium is achieved in 30 hours, and the removal rate of the iodine vapor is 169 wt%. The adsorption capacity for iodine in a 100 mg/L cyclohexane-iodine solution is 127.80 mg.g <-1 >. The material can be recycled for more than four times. The material can be used in the field of iodine removal.

The invention related to a preparation method for carbon nanofiber. The preparation method is characterized in that: PVC and a catalyst precursor are mixed firstly by using an organic solvent, stirred at 40-50 DEG C to prepare a uniform electrostatic spinning solution; a PVC-based carbon nanofiber precursor is prepared from the spinning solution through an electrostatic spinning device; the PVC-based carbon nanofiber precursor is dried in a drying case, and the dried PVC-based carbon nanofiber precursor is subjected to iodine vapor treatment or alkaline liquor treatment to remove hydrogen chloride, and then the PVC-based carbon nanofiber precursor is put into a muffle furnace to perform preoxidation in an air environment and is forged into the PVC-based carbon nanofiber in a tube furnace under a condition of piping in inert gas continuously. By utilization of the method, resource reuse of the PVC can be achieved with simple equipment and easy operation, and large-scale preparation can be achieved. The PVC-based carbon nanofiber has a large specific surface area. The PVC-based carbon nanofiber is prone to recycle and can be reutilized. The PVC-based carbon nanofiber is suitable for applications in the fields of hydrogen storage, fuel cells, lithium ion batteries, and the like.

The invention provides an iodine vapor distributing device with an on-line iodine feeding function. The iodine vapor distributing device comprises an iodine vapor generating system, a carrier gas preheating system, an online iodine feeding system, pipelines and valves, wherein the pipelines and the valves are used for connecting all the systems; the carrier gas preheating system comprises an air compressor, a gas storage cylinder, a spiral pipe and a first water bath; the iodine vapor generating system comprises an iodine pool, an upper gas distributing plate, a carrier gas pipe, a lower gas distributing plate, a carrier gas diffusion nozzle and a second water bath; and the online iodine feeding system comprises a feeding hopper, a spherical valve and a feeding pipe. The iodine vapor distributing device provided by the invention is economic and reliable, can meet requirements on continuous operation under different working conditions, can be applied to performance tests of a safety housing filtering and discharging system, and is also suitable for other fields such as chemical industry needing continuous iodine feeding for a long time.

The invention discloses an industrial crude iodine recovery stirring device, which comprises a sealing cover, wherein a gear shaft is arranged at the central position of the top of the sealing cover;a rack is arranged on the left side of the gear shaft; a moving rod is arranged at the left end of the rack; a cylindrical cam is arranged at the left end of the moving rod; and a supporting frame isarranged above the cylindrical cam, and the supporting frame is further arranged below the cylindrical cam. A braking device of the crude iodine recovery stirring device drives the rack to move back and forth by a cylindrical cam mechanism, the rack drives a stirring rod to rotate in the positive and negative directions, the stirring speed is small, the solution can be fully heated, the heating ismore uniform, and the rotation in the positive and negative directions can cause the solution to generate larger water fluctuation and more vapor dense, so that the iodine vapor still maintains a higher temperature during the transfer process, blocking plates on stirring fan blades can further generate larger water fluctuation, and the swinging plate can enlarge the stirring range.

The invention discloses a method for efficiently synthesizing trifluoromethyl iodide. The method comprises the following steps: reacting CF3COOOH vapor with iodine vapor under the action of a catalystto generate the trifluoromethyl iodide, wherein the catalyst is a catalyst which selects activated carbon or graphene as a carrier and is loaded with 1 to 10 weight percent of KNO3 and 2 to 7 weightpercent of RbNO3; then effectively removing impurities and moisture in CF3I by a NaOH solution, silica gel and a molecular sieve in sequence, thus efficiently collecting high-purity CF3I products. Themethod has the advantages of fast reaction rate, good selectivity, high yield, high reactant utilization and energy conservation; the method is expected to realize industrialized production and meetscurrent market demands.

The invention discloses a molecular platform for detecting iodine in different forms by spectrometry and colorimetry as well as a preparation method and application thereof, and relates to a molecularplatform for detecting iodine as well as a preparation method and a detection method thereof. The invention aims to solve the technical problems that the existing iodine detection materials are few in variety, only one form of iodine can be detected, the detection mechanism is single, the detection limit is high, and the detection can be easily interfered by the external environment. The structural formula of the molecular platform is described in the specification. The preparation method of the molecular platform comprises the following steps of: reacting 2-(3-amino-6-hydroxyphenyl) phenanthroimidazole with terephthalaldehyde to obtain an organic compound A, and reacting the organic compound A with mercury nitrate to obtain the molecular platform. The molecular platform can be used for qualitative or quantitative detection of iodide ions, iodine elementary substances or/and iodine vapor in different media. The molecular platform is convenient to use and quick in response, and can beapplied to the field of iodine ion, iodine elementary substance and iodine vapor detection.