CN111739673A - Oxidation adsorption experiment system and method for trace hydrogen in oxygen atmosphere - Google Patents
Oxidation adsorption experiment system and method for trace hydrogen in oxygen atmosphere Download PDFInfo
- Publication number
- CN111739673A CN111739673A CN202010396459.3A CN202010396459A CN111739673A CN 111739673 A CN111739673 A CN 111739673A CN 202010396459 A CN202010396459 A CN 202010396459A CN 111739673 A CN111739673 A CN 111739673A
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- oxidation
- bed
- adsorption
- oxygen atmosphere
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
- G21F9/02—Treating gases
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/001—Mechanical simulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Plasma & Fusion (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention relates to an oxidation adsorption experiment system and method of trace hydrogen in oxygen atmosphere, the system comprises an oxidation bed, a trace hydrogen analyzer and an adsorption bed which are connected in sequence; the gas source comprises a hydrogen source and an oxygen source which are connected to the inlet of the oxidation bed through a three-way valve to react to generate water; the trace hydrogen analyzer is used for analyzing the concentration of residual unoxidized hydrogen; the adsorption bed is used for adsorbing water generated by the reaction. The method comprises the following steps: oxidizing hydrogen in oxygen atmosphere to generate water; analyzing the concentration of residual unoxidized hydrogen and calculating the oxidation efficiency of the corresponding oxidation bed to the hydrogen; adsorbing the water generated by the oxidation reaction and calculating the adsorption efficiency of the adsorption bed according to the mass of the water. The invention has the following beneficial effects: debugging, calibrating, overhauling and the like of analytical equipment are always the most time-consuming and labor-consuming steps of relevant experiments, and the experimental device is only provided with an analytical device, namely a trace hydrogen analyzer, so that the experimental measurement device is simplified to a great extent under the condition of ensuring the precision.
Description
Technical Field
The invention belongs to the field of chemical equipment, and particularly relates to an oxidation adsorption experiment system and method for trace hydrogen in an oxygen atmosphere.
Background
The high-temperature oxidation treatment process of the spent fuel element is an advanced nuclear fuel post-treatment head-end process proposed by the American Edarash laboratory (INL) in the sixty-seven decades of the last century. Between shearing and dissolving of the traditional spent fuel post-processing element, the spent fuel element is calcined at high temperature in an oxidizing atmosphere of air, oxygen or nitrogen oxides and the like. Calcining at high temperature to obtain UO2The oxidation of the core block is converted into U which is easily dissolved by nitric acid3O8Or UO3Fine powder of UO2The pellets will increase in volume by 36% after oxidation and the characteristic of forming a volume expansion force will break the cladding and cause it to separate from the pellets. At the same time realize3H、85Kr/Xe、14C、129I. The fissile elements such as Cs, Ru and Tc are completely or partially removed in the form of gas.
In the prior art, almost all tritium in the spent fuel pellet is released into process tail gas in the high-temperature oxidation process, and the tritium is collected and managed in a centralized manner. The method has important significance for improving the current PUREX process. Firstly, before the element is dissolved, tritium is volatilized and trapped, so that the tritium management problem and the nitric acid reuse scheme of the subsequent process can be simplified; secondly, the tritium collection solves the problem of tritium discharge in low-level wastewater of a post-treatment plant, and makes it possible to build a plant in an inland post-treatment plant.
The treatment of tritium in the high-temperature oxidation tail gas has the following characteristics that a large amount of oxygen is introduced in the high-temperature oxidation process to serve as a reactant, tritium in the system is a fission product in the spent fuel pellet, and the content of tritium is extremely low. Therefore, the above treatment process is intended to oxidize and trap tritium having an extremely low concentration in a high oxygen content. Methods and systems for achieving this process result are lacking in the prior art.
In the existing tritium removal process research, tritium waste gas in a reactor is mainly treated, the content of inert gas in a research object is very high, and a tritium removal experiment with high oxygen (more than 90 percent) content is not carried out. In view of the fact that tritium is an isotope of hydrogen, in general, hydrogen is adopted to replace tritium for experimental study, and experimental data of the tritium-removing method can provide reliable reference for the design of the tritium-removing process. One typical experimental method for tritium and hydrogen measurement is to use an ionization chamber and a trace water analyzer. The principle of the trace water analyzer is that the trace water in the gas is ionized into hydrogen and oxygen after being absorbed by the high hygroscopicity of the phosphorus pentoxide, and the method is particularly greatly influenced by the hydrogen and the oxygen and is not suitable for the high-oxygen atmosphere in the experiment. And it is a very complicated matter to adjust and calibrate the measuring instrument when performing relevant tritium removal experiments.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an oxidation adsorption experiment system and method for trace hydrogen in an oxygen atmosphere.
The technical scheme of the invention is as follows:
an oxidation adsorption experiment system for trace hydrogen in oxygen atmosphere comprises an oxidation bed, a trace hydrogen analyzer and an adsorption bed which are sequentially connected; a gas source is connected to an inlet of the oxidation bed; the gas source comprises a hydrogen source and an oxygen source which are connected to the inlet of the oxidation bed through a three-way valve so as to react in the oxidation bed to generate water; the trace hydrogen analyzer is used for analyzing the concentration of residual unoxidized hydrogen; the adsorption bed is used for adsorbing water generated by the reaction.
Further, in the oxidation adsorption experiment system for trace hydrogen in the oxygen atmosphere, the pressure monitoring system monitors the pressure data at the inlet of the oxidation bed and the pressure data of the gas source to ensure safety.
Further, in the oxidation adsorption experiment system for trace hydrogen in the oxygen atmosphere, the coil pipe capable of lengthening the length of the gas path is arranged at the rear part of the three-way valve so as to ensure that the flow state of the hydrogen and the oxygen is stable before the hydrogen and the oxygen enter the oxidation bed.
Further, in the oxidation adsorption experiment system for trace hydrogen in the oxygen atmosphere, a cooler is arranged at the front end of the trace hydrogen analyzer.
Furthermore, in the oxidation adsorption experiment system for trace hydrogen in the oxygen atmosphere, thermometers are arranged at the center and the edge of the oxidation bed and the sieve bed of the adsorption bed so as to ensure that the whole bed reaches a preset temperature when an experiment is carried out.
Meanwhile, the invention also provides an oxidation adsorption experimental method of trace hydrogen in an oxygen atmosphere, which comprises the following steps:
oxidizing hydrogen in oxygen atmosphere to generate water;
analyzing the concentration of residual unoxidized hydrogen and calculating the oxidation efficiency of the corresponding oxidation bed to the hydrogen;
adsorbing the water generated by the oxidation reaction and calculating the adsorption efficiency of the adsorption bed according to the mass of the water.
Further, in the above-mentioned experimental method for the oxidation adsorption of trace hydrogen in the oxygen atmosphere, during the experiment, the pressure data at the inlet of the oxidation bed and the pressure data of the gas source are monitored to ensure safety.
Further, according to the experimental method for the oxidation adsorption of trace hydrogen in the oxygen atmosphere, before the oxidation reaction, the gas path is lengthened to ensure that the flow state of the hydrogen and the oxygen is stable before the hydrogen and the oxygen enter the oxidation bed.
Further, in the above-described method for the oxidation adsorption test of a trace amount of hydrogen in an oxygen atmosphere, the residual gas is cooled before the concentration of the residual unoxidized hydrogen gas is analyzed.
The invention has the following beneficial effects:
(1) debugging, calibrating, overhauling and the like of analytical equipment are always the most time-consuming and labor-consuming steps of relevant experiments, and the experimental device is only provided with an analytical device, namely a trace hydrogen analyzer, so that the experimental measurement device is simplified to a great extent under the condition of ensuring the precision.
(2) The pressure data of monitoring oxidation bed entrance and the pressure data of air supply ensure the device internal pressure distribution condition, can foresee because of catalyst powder or adsorbent are taken away by the air current and block up the condition that the pipeline caused danger, let the security of experiment promote greatly.
(3) The coil pipe is arranged at the rear part of the three-way pipe, so that the length of the gas circuit can be increased, the condition that the flow form of gas is completely developed and stable before entering the copper oxide bed is ensured, the mixing effect of hydrogen and oxygen before reaction is effectively improved, and the integral experiment precision is improved.
Drawings
FIG. 1 is a schematic diagram of an experimental system for oxidation and adsorption of a trace amount of hydrogen in an oxygen atmosphere according to the present invention.
FIG. 2 is a flow chart of an experimental method for the oxidation adsorption of trace hydrogen in an oxygen atmosphere according to the present invention.
In the above drawings, 1, a hydrogen pressure gauge; 2. an oxygen pressure gauge; 3. a valve; 4. a valve; 5. a hydrogen mass flow controller; 6. an oxygen mass flow controller; 7. a valve; 8. a valve; 9. a coil pipe; 10. a pressure sensor; 11. a valve; 12. a copper oxide bed; 13. a copper oxide bed outer wall thermometer; 14. a copper oxide bed center thermometer; 15. a cooler; 16. a valve; 17. a valve; 18. a valve; 19. a trace hydrogen analyzer; 20. a molecular sieve bed; 21. a molecular sieve bed central thermometer; 22. and (4) emptying the air.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in fig. 1, the present invention provides an oxidation adsorption experiment system for trace hydrogen in an oxygen atmosphere, which comprises an oxidation bed, a trace hydrogen analyzer 19 and an adsorption bed which are connected in sequence; a gas source is connected to an inlet of the oxidation bed; the gas source comprises a hydrogen source and an oxygen source which are connected to the inlet of the oxidation bed through a three-way valve so as to react in the oxidation bed to generate water; the trace hydrogen analyzer 19 is used for analyzing the concentration of residual unoxidized hydrogen gas; the adsorption bed is used for adsorbing water generated by the reaction.
In this embodiment, the oxidation bed is a copper oxide bed 12, and the adsorption bed is a molecular sieve bed 20. In the experiment, a certain proportion of hydrogen and oxygen react to generate water through the copper oxide bed 12; the gas flowing out from the copper oxide bed 12 is cooled to a certain temperature by a cooler 15, the concentration of the residual unoxidized hydrogen is analyzed by a trace hydrogen analyzer 19, and the water generated by oxidation is adsorbed by a molecular sieve bed 20, and then the residual gas is discharged into the atmosphere. The sieve bed center and the marginal part of oxidation bed and adsorption bed all are provided with the thermometer in order to ensure that the whole bed reaches and predetermines the temperature when the experiment goes on to can improve experimental data's reliability.
The specific experimental device is shown in figure 1, a pressure gauge (comprising a hydrogen pressure gauge 1 and an oxygen pressure gauge 2) is arranged at a gas inlet, a ball valve is arranged between a mass flow controller (a hydrogen mass flow controller 5 and an oxygen mass flow controller 6) and the pressure gauge, and a check valve is arranged behind the mass flow controller. Thermometers (a copper oxide bed center thermometer 14 and a copper oxide bed outer wall thermometer 13) are inserted in the center and the outer wall of the copper oxide bed, and the cooler is externally connected with a refrigerating machine. A bypass is provided in the line after the cooler 15, and a trace hydrogen analyzer 19 is provided in the bypass. The bypass and the main path are connected with a molecular sieve bed 20 after being gathered, and a drain port 22 behind the molecular sieve bed 20 is directly drained, wherein a molecular sieve bed central thermometer 21 is arranged on the molecular sieve bed, or the molecular sieve bed central thermometer can be arranged on the molecular sieve bed. The pipeline in the device is SS316L BA grade, British 1/8 inch stainless steel pipe, copper oxide bed, molecular sieve bed 20 are stainless steel cavity and CF flange structure, the outside is heated by armored heating body, temperature, pressure, flow parameter can be monitored by upper computer configuration software, data recording is completed, the whole device is composed of aluminum alloy section frame and plastic spraying panel, the pipeline and valve part are open structure. The pressure gauge in front of the copper oxide bed can effectively monitor whether the resistance of the copper oxide bed or the molecular sieve bed is too large, so that the condition that equipment is damaged to cause gas leakage due to too large pressure in the device is prevented, and the safety coefficient is improved. The thermometers are arranged at the center and the edge of the copper oxide bed and the molecular sieve bed, so that whether the whole bed reaches the specified temperature can be known, and the experimental precision is improved. The analytical equipment is only a trace hydrogen analyzer 19, so that the equipment is greatly simplified, and the time and financial resources for debugging the analytical equipment are saved. The device is a set of safe and high-precision experimental device which can be used for hydrogen and hydrogen oxidation adsorption experiments under high oxygen content.
The experiments to be performed with the system of the present invention are hydrogen and oxygen systems, hydrogen being an explosive gas, especially in oxygen atmosphere the explosive limit will be lower than in air. For safety performance, the invention adopts a pressure monitoring system to monitor the pressure data at the inlet of the oxidation bed and the pressure data of the gas source so as to ensure the safety. The concrete scheme can be that the pressure sensor 10 is installed in front of the copper oxide bed so as to facilitate real-time monitoring, and prevent the gas from being incapable of smoothly circulating due to the overlarge gas resistance of the copper oxide bed and the molecular sieve bed, and the danger caused by the gas leakage due to the device rupture in the equipment is avoided. When the indication of the pressure sensor in front of the copper oxide bed is close to the pressure of the gas inlet, the operation is stopped, and whether the catalyst or the adsorbent blocks the gas outlet pipe or the catalyst and the adsorbent are stacked too densely is checked. The safety of the experiment can be greatly improved after the pressure distribution condition in the device is ensured.
In addition, most of the existing equipment is compact when being installed, the distance between the gas inlet and the oxidation bed is relatively short, the gas is just mixed at the moment, the pressure distribution in the pipe is not stable, and the flow form is not stable, so that the oxidation effect of the oxidation bed is influenced if the gas inlet composition is changed or the flow form in the gas flow pipe is changed. Therefore, in this embodiment, the three-way valve rear portion is provided with the coil pipe 9 that can extend gas circuit length and flows the form stably before ensureing hydrogen and oxygen entering oxidation bed, effectively improves the mixed effect of hydrogen oxygen before the reaction, promotes whole experiment precision.
When the system for the oxidation adsorption experiment of trace hydrogen in the oxygen atmosphere works, firstly, the indication number of each instrument is monitored, then, the valves (4, 8, 11 and 17) are opened to introduce oxygen and the circulating water cooler is started, then, the heating setting is carried out on the copper oxide bed in a computer, the heating is slowly carried out, the valves (16 and 18) are opened after the copper oxide bed is heated to the specified temperature, and then, the valves (3 and 7) are opened to introduce hydrogen.
All experimental data can be stored, the amount of the introduced hydrogen can be obtained by integrating the flow rate of the inlet hydrogen with time, and the amount of the hydrogen left after passing through the oxidation bed can be obtained by integrating the content of the hydrogen measured by the micro hydrogen analyzer 19 with time in the same way, so that the oxidation efficiency of the oxidation bed on the hydrogen is obtained. The mass of the adsorbent in the molecular sieve bed is measured by a high-precision electronic balance before and after the experiment, so that the mass of water absorbed by the adsorbent can be obtained, and the adsorption efficiency of the molecular sieve bed can be calculated.
The experimental device is only provided with a high-precision trace hydrogen analyzer behind the copper oxide bed, and the experimental measurement device is greatly simplified.
The experimental device can measure the efficiency of oxidizing hydrogen by different oxidants under high-oxygen atmosphere, can also measure the adsorption efficiency of different molecular sieve adsorbents, and can provide guidance for the design of the treatment process of the high-temperature oxidation tail gas after the industrial nuclear fuel is treated in the future.
As shown in fig. 2, the present invention further provides an experimental method for oxidation and adsorption of trace hydrogen in an oxygen atmosphere, comprising:
s100, oxidizing hydrogen in an oxygen atmosphere to generate water;
s200, analyzing the concentration of residual unoxidized hydrogen and calculating the oxidation efficiency of the corresponding oxidation bed to the hydrogen;
s300, adsorbing water generated by the oxidation reaction and calculating the adsorption efficiency of the adsorption bed according to the mass of the water.
During the experiment, the pressure data at the inlet of the oxidation bed and the pressure data of the gas source were monitored to ensure safety. Before the oxidation reaction, the gas path is lengthened to ensure the stable flow state of the hydrogen and the oxygen before entering the oxidation bed.
In the experimental process, debugging, calibration, maintenance and the like of the analysis equipment are always the most time-consuming and labor-consuming steps of relevant experiments, the experimental device is only provided with one analysis device, namely a trace hydrogen analyzer, the experimental measurement device is simplified to a great extent under the condition of ensuring the precision, and the reliability of experimental data is effectively guaranteed. The pressure data of monitoring oxidation bed entrance and the pressure data of air supply ensure the device internal pressure distribution condition, can foresee because of catalyst powder or adsorbent are taken away by the air current and block up the condition that the pipeline caused danger, let the security of experiment promote greatly. The coil pipe is arranged at the rear part of the three-way pipe, so that the length of the gas circuit can be increased, the condition that the flow form of gas is completely developed and stable before entering the copper oxide bed is ensured, the mixing effect of hydrogen and oxygen before reaction is effectively improved, and the integral experiment precision is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.
Claims (9)
1. An oxidation adsorption experiment system for trace hydrogen in oxygen atmosphere is characterized by comprising an oxidation bed, a trace hydrogen analyzer and an adsorption bed which are sequentially connected; a gas source is connected to an inlet of the oxidation bed; the gas source comprises a hydrogen source and an oxygen source which are connected to the inlet of the oxidation bed through a three-way valve so as to react in the oxidation bed to generate water; the trace hydrogen analyzer is used for analyzing the concentration of residual unoxidized hydrogen; the adsorption bed is used for adsorbing water generated by the reaction.
2. The system for conducting experiments on the oxidative adsorption of trace hydrogen in the oxygen atmosphere as claimed in claim 1, wherein a pressure monitoring system monitors the pressure data at the inlet of the oxidation bed and the pressure data of the gas source to ensure safety.
3. The system for oxidation and adsorption experiment of trace hydrogen in oxygen atmosphere as claimed in claim 1, wherein the back part of said three-way valve is provided with a coil pipe capable of increasing the length of gas path to ensure the stable flow form of hydrogen and oxygen before entering the oxidation bed.
4. The system for conducting an oxidative adsorption experiment of trace hydrogen in an oxygen atmosphere as claimed in claim 1, wherein a cooler is provided at a front end of the trace hydrogen analyzer.
5. An oxygen atmosphere trace hydrogen oxidation and adsorption experiment system as claimed in any one of claims 1 to 4, wherein the oxidation bed and the adsorption bed are provided with thermometers at the center and edge portions of the sieve bed to ensure that the whole bed reaches a preset temperature when the experiment is carried out.
6. An oxidation adsorption experimental method of trace hydrogen in oxygen atmosphere is characterized in that,
oxidizing hydrogen in oxygen atmosphere to generate water;
analyzing the concentration of residual unoxidized hydrogen and calculating the oxidation efficiency of the corresponding oxidation bed to the hydrogen;
adsorbing the water generated by the oxidation reaction and calculating the adsorption efficiency of the adsorption bed according to the mass of the water.
7. The experimental method for the oxidation and adsorption of trace hydrogen in an oxygen atmosphere as claimed in claim 6, wherein during the experiment, the pressure data at the inlet of the oxidation bed and the pressure data of the gas source are monitored to ensure safety.
8. The experimental method for the oxidation and adsorption of trace hydrogen in an oxygen atmosphere as claimed in claim 6, wherein before the oxidation reaction, the gas path is lengthened to ensure the stable flow pattern of hydrogen and oxygen before entering the oxidation bed.
9. The method for conducting an oxidative adsorption test of trace hydrogen in an oxygen atmosphere as claimed in claim 6, wherein the residual gas is cooled before analyzing the concentration of the residual unoxidized hydrogen gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010396459.3A CN111739673B (en) | 2020-05-12 | 2020-05-12 | Oxidation adsorption experiment system and method for trace hydrogen in oxygen atmosphere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010396459.3A CN111739673B (en) | 2020-05-12 | 2020-05-12 | Oxidation adsorption experiment system and method for trace hydrogen in oxygen atmosphere |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111739673A true CN111739673A (en) | 2020-10-02 |
| CN111739673B CN111739673B (en) | 2022-11-25 |
Family
ID=72647111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010396459.3A Active CN111739673B (en) | 2020-05-12 | 2020-05-12 | Oxidation adsorption experiment system and method for trace hydrogen in oxygen atmosphere |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111739673B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834668A (en) * | 2020-12-30 | 2021-05-25 | 中国原子能科学研究院 | Low-temperature control device for analyzing hydrogen isotopes by gas chromatography |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3752652A (en) * | 1972-02-11 | 1973-08-14 | Texaco Belgium Nv Sa | Method and apparatus for measurement of minute quantities of oxygen |
| JP2009210543A (en) * | 2008-03-06 | 2009-09-17 | National Institutes Of Natural Sciences | Hydrogen isotope containing gas removing apparatus and adsorption device used for the same |
| CN105928854A (en) * | 2016-04-20 | 2016-09-07 | 中国原子能科学研究院 | Apparatus for controllable micropressure tritium adsorption and on-line testing of concentration and depth distribution of tritium in material |
| CN106289920A (en) * | 2016-11-18 | 2017-01-04 | 中国工程物理研究院材料研究所 | A kind of hydrogen deuterium analysis water-like preparation system and its implementation |
| CN110954939A (en) * | 2019-12-24 | 2020-04-03 | 中国原子能科学研究院 | Tritium monitor laboratory calibrating device |
| CN111007031A (en) * | 2019-12-26 | 2020-04-14 | 河南省日立信股份有限公司 | Method for measuring trace hydrogen or trace oxygen |
-
2020
- 2020-05-12 CN CN202010396459.3A patent/CN111739673B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3752652A (en) * | 1972-02-11 | 1973-08-14 | Texaco Belgium Nv Sa | Method and apparatus for measurement of minute quantities of oxygen |
| JP2009210543A (en) * | 2008-03-06 | 2009-09-17 | National Institutes Of Natural Sciences | Hydrogen isotope containing gas removing apparatus and adsorption device used for the same |
| CN105928854A (en) * | 2016-04-20 | 2016-09-07 | 中国原子能科学研究院 | Apparatus for controllable micropressure tritium adsorption and on-line testing of concentration and depth distribution of tritium in material |
| CN106289920A (en) * | 2016-11-18 | 2017-01-04 | 中国工程物理研究院材料研究所 | A kind of hydrogen deuterium analysis water-like preparation system and its implementation |
| CN110954939A (en) * | 2019-12-24 | 2020-04-03 | 中国原子能科学研究院 | Tritium monitor laboratory calibrating device |
| CN111007031A (en) * | 2019-12-26 | 2020-04-14 | 河南省日立信股份有限公司 | Method for measuring trace hydrogen or trace oxygen |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112834668A (en) * | 2020-12-30 | 2021-05-25 | 中国原子能科学研究院 | Low-temperature control device for analyzing hydrogen isotopes by gas chromatography |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111739673B (en) | 2022-11-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1807842B1 (en) | Method and sampling system for the taking of a sample from the atmosphere in a reactor containment housing of a nuclear plant | |
| Lewis et al. | Fission product release modelling for application of fuel-failure monitoring and detection-An overview | |
| CN201811870U (en) | Self-starting type sampling and analyzing device for measuring concentration of hydrogen in containment | |
| CN111739673B (en) | Oxidation adsorption experiment system and method for trace hydrogen in oxygen atmosphere | |
| CN107967952B (en) | System and method for monitoring gas concentration in containment after serious accident of reactor | |
| CN102445428B (en) | Analytical method of tetravalent uranium | |
| CN111128428A (en) | Tritium tail gas rapid collecting and processing device | |
| JP5096485B2 (en) | Method for monitoring the concentration of dissolved substances in aqueous media | |
| JPH05100087A (en) | Boiling water reactor primary cooling system | |
| Hyder et al. | Processing of irradiated, enriched uranium fuels at the Savannah River Plant | |
| CN103869353A (en) | Method for measuring carbon-14 in environmental water | |
| CN112651595B (en) | Method for formulating emergency action level of post-processing plant | |
| CN110729062B (en) | Fuel assembly cladding integrity analysis and prediction method, system and storage medium | |
| JP2007225393A (en) | Off-gas nuclide continuous measuring apparatus | |
| Dickson et al. | Fission product releases from thoria and urania fuels under reactor accident conditions: Hot cell experiment# 6 (HCE6) | |
| JPH0252295A (en) | Method and apparatus for specifying leak in control rod for nuclear reactor | |
| CN113409971B (en) | Nuclear reactor core damage monitoring method, device, medium and electronic equipment | |
| JP4690757B2 (en) | Off-gas transition time evaluation method and damaged fuel cell identification system | |
| Servis et al. | Impact of Irradiation and Decay Time on Chemical Speciation in Uranyl Sulfate Solution | |
| CN219245780U (en) | System for collecting Kr-85 in gaseous effluent under high acid condition | |
| WO2003021605A1 (en) | A method and a device for evaluating the integrity of a control substance in a nuclear plant | |
| Dickinson et al. | Modifications to the INSPECT Model | |
| KR20100012200A (en) | Diluting and sampling method of nuclear reactor coolant sample | |
| Wang et al. | Prediction of Iodine Peak and Iodine Purification Time in PWR Nuclear Power Plant With Defective Fuel Rods | |
| JPH03505127A (en) | A method for predicting relative hydrogenation in a group of zirconium alloys under nuclear radiation irradiation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |