CN102286754A - Electrolysis and concentration device of tritium in water - Google Patents
Electrolysis and concentration device of tritium in water Download PDFInfo
- Publication number
- CN102286754A CN102286754A CN2011102477420A CN201110247742A CN102286754A CN 102286754 A CN102286754 A CN 102286754A CN 2011102477420 A CN2011102477420 A CN 2011102477420A CN 201110247742 A CN201110247742 A CN 201110247742A CN 102286754 A CN102286754 A CN 102286754A
- Authority
- CN
- China
- Prior art keywords
- electrolyzer
- sample bottle
- bottle
- cooling
- oxygen
- 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
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
The invention relates to an electrolysis and concentration device of tritium in water. The electrolysis and concentration device comprises a reflux condensing pipe, a sample bottle and an SPE (solid polymer electrolyte) electrolyzer all of which are arranged in a cooling device from top to bottom. The device also comprises a direct current stabilized-current power supply for power supply of the electrolyzer and a control circuit, wherein the positive and negative electrodes of the SPE electrolyzer are connected with the positive and negative electrodes of the direct current stabilized-current power supply; the oxygen and hydrogen outlets of the electrolyzer are separately connected with the reflux condensing pipe through the sample bottle, and then are separately connected to the outside of the cooling device through oxygen and hydrogen exhaust pipes; the oxygen and hydrogen exhaust pipes are feeding ports; and the outlet connected with an oxygen sample bottle and the outlet connected with a hydrogen sample bottle are separately connected with the feeding ports of the electrolyzer through pipelines. The device also comprises a laser transmitter and a laser receiver both of which are oppositely located at both sides of one vertical pipeline of two branched pipelines for connecting the outlet of the oxygen sample bottle and the outlet of the hydrogen sample bottle, wherein the vertical pipeline part between the laser transmitter and laser receiver is transparent; and the laser receiver is used for outputting liquid level signal to the control circuit. The electrolysis and concentration device provided by the invention is efficient, stable and reliable.
Description
Technical field
The invention belongs to the activity measurement technical field of tritium in the water, be specifically related to a kind of device that tritium in the water of low-level sample can be carried out electrolytic enrichment.
Background technology
Electrolytic enrichment to tritium in the water of low-level sample among the GB 12375-1990 " analytical procedure of tritium in the water " is by alkali formula electrolytic process, need use alkali formula electrolyzer, vacuum condensation distillation, liquid nitrogen etc., the main drawback of this method is: operation and complex disposal process, to the skilled operation degree require high, electrolysis time is long (generally need 150～200h), tool corrodibility, enrichment factor is limited.At present existing bibliographical information utilizes SPE (Solid polymer Electrolyte) solid polymerization film ionogen to carry out the spissated technology of electrolysis, this technology has the following advantages: (1) ionogen need not any reagent, simple to operate, owing to there is not any solute residue, there is not the limit in the volume enrichment factor of water.(2) oxygen of Chan Shenging and hydrogen can not produced detonation gas by the semipermeable partition isolation respectively, and is safe.(3) SPE cationic exchange membrane resistance is minimum, and the contact surface of electrode and film can be because of bubble stop up, and is difficult to saturatedly by electric current, can carry out large-current electric and separate, and shortens electrolysis time.
Summary of the invention
The objective of the invention is to technical requirements, tritium electrolytic enrichment device in a kind of efficient, stable, reliable water is provided at tritium measurement in the low-level radioactive activity water.
For achieving the above object, tritium electrolytic enrichment device in the water of the present invention, comprise and be located in the heat sink and the reflux condensing tube that is provided with from top to bottom, sample bottle and SPE electrolyzer, also be included as the dc current stabilized power supply of electrolyzer with electricity and the pilot circuit of control electrolyzer power source and the start and stop of heat sink power supply, the positive and negative electrode of described SPE electrolyzer connects the positive and negative electrode of dc current stabilized power supply, the oxygen of electrolyzer and hydrogen outlet are respectively by taking back the stream prolong behind the sample bottle, connect oxygen and hydrogen vapor pipe more respectively to heat sink, this oxygen and hydrogen vapor pipe also are the application of sample mouth simultaneously, the sample bottle outlet that connects oxygen exports the injection port that is connected to electrolyzer respectively by pipeline with the sample bottle that is connected hydrogen, also comprise laser transmitter and laser pickoff, be located at the pipe tunnel both sides in connecting the outlet of oxygen sample bottle and being connected one of two laterals that the hydrogen sample bottle exports relatively, the pipe tunnel position that is between laser transmitter and the laser pickoff is transparent, and this laser pickoff output liquid level signal is to pilot circuit.
The sample bottle outlet of above-mentioned connection oxygen is connected to the injection port of being located at bottom of electrolytic tank with the sample bottle outlet that is connected hydrogen by three-way pipeline, and this injection port also is a nesting port simultaneously, and this nesting port is provided with drainage switch.
In one embodiment, above-mentioned heat sink is a refrigerator.
In another embodiment, above-mentioned heat sink comprises refrigerator and places the interior cooling bottle of refrigerator, recycle pump and water-cooled head, described sample bottle and reflux condensing tube all place in the cooling bottle, there is the cooling fluid inlet cooling bottle upper end, be full of cooling fluid in the cooling bottle, cooling bottle upper end is tightly connected with the reflux condensing tube upper end, the lower end of reflux condensing tube is connected with the sample bottle upper end, the sample bottle lower end is tightly connected with cooling bottle lower end, cooling bottle lower end has the import and export of cooling fluid respectively, described water-cooled head is located at electrolyzer, and the cooling fluid of described cooling bottle lower end is imported and exported, recycle pump is communicated with into cooling fluid circulation loop through the pipeline circulation successively with the water-cooled head.Also can comprise the wind-cooling heat dissipating case that places on the refrigerator inwall, this wind-cooling heat dissipating case is located between recycle pump and the water-cooled head.Cooling fluid reaches cooling purpose constantly circulating under the effect of recycle pump in cooling bottle and water-cooled head, the wind-cooling heat dissipating case is discharged heat that cooling fluid is with.
Above-mentioned water-cooled head the best is provided with two, is located at the tow sides of electrolyzer respectively.
Above-mentioned electrolyzer can be equipped with electronic thermometer probe, and this electronic thermometer probe output temperature transducing signal is to pilot circuit.
Above-mentioned laser transmitter and laser pickoff the best are located at the pipe tunnel both sides in the lateral that is connected the outlet of oxygen sample bottle relatively.
Laser transmitter of the present invention, laser pickoff and the transparent tube that is between relative laser transmitter and the laser pickoff have constituted the laser liquid-level controller, when the liquid level in the transparent tube was lower than the position of relative laser transmitter and laser pickoff, laser pickoff sent and stops electrolytic signal to pilot circuit.The relative laser transmitter and the position of laser pickoff are the setting liquid level of laser liquid-level controller just.
Pilot circuit is responsible for electrolytic beginning, end and to the protection of power supply and refrigerator circuit.The liquid level of water surpasses the setting liquid level of laser liquid-level controller in sample bottle, the laser liquid-level controller sends electrolyzable signal to pilot circuit, the power supply that pilot circuit is at first connected refrigerator, recycle pump and wind-cooling heat dissipating case begins refrigeration and cooling, freezed about 1 hour, temperature is less than after 10 ℃ in the refrigerator, connect dc current stabilized power supply again and give electrolyzer with electricity, the beginning electrolysis.Behind the electrolysis certain hour, the liquid level of water is lower than the setting liquid level of laser liquid-level controller in the sample bottle, laser liquid-level controller pilot circuit to the back-end sends and finishes electrolytic signal, closes all power supplys, and electrolysis finishes.
Practice shows that the volume that the present invention works as sample bottle is 1250ml, when the deionized water sample that once adds 500ml carries out electrolysis, need 48 hours time, sample volume concentrated and is that 20ml, the volume multiple that concentrates is 25 times after electrolysis was finished, and the concentration multiple that concentrates can reach 8 times; When once adding 1250ml, need 108 hours time, the concentration multiple that concentrates can reach 20 times.
Because laser liquid-level controller of the present invention can accurately control liquid level in desired location, can guarantee so each electrolysis finish after the residual volume of sample be the same; In whole electrolytic process, electrolyzer and cooling bottle keep stable cooling performance under the effect of refrigerator, recycle pump, wind-cooling heat dissipating case, water-cooled head; In electrolytic process, dc current stabilized power supply remains supplies with the stable electric current of electrolyzer simultaneously, thereby, guaranteed the stable and repeated of work of the present invention.
The present invention utilizes tritiated water (HTO) than water (H
2O) difficult electrolytic characteristics, by the sample bottle of SPE (Solid polymer Electrolyte) electrolyzer, laser liquid-level controller, dc current stabilized power supply, heat sink and comparatively large vol, can be more than 8 times with tritium concentration in the water.Whole device is through the system integration, and is rational in infrastructure, easy to operate, stability and good reproducibility, and the efficient that concentrates height is the treatment unit that concentrates that tritium is measured in the low-level radioactive activity water of a kind of ideal.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Among the figure: 1. anodal 6. electrolyzer oxygen outlet 7. direct current adjustable constant current power supplys, 8. pilot circuit 9. refrigerators, 10. oxygen vapor pipes of electronic thermometer probe 2. nesting ports 3. water-cooleds 4.SPE electrolyzer 5. electrolyzer and application of sample mouth 11. hydrogen vapor pipes and application of sample mouth 12. cooling fluid liquid adding holes 13. reflux condensing tubes 14. sample bottles 15. cool off bottle 16. laser transmitters and laser pickoff 17. electrolyzer negative poles 18. electrolyzer hydrogen outlets 19. recycle pumps 20. wind-cooling heat dissipating casees
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is described in detail.
As shown in Figure 1, the embodiment of the invention comprises to be located in the heat sink and the reflux condensing tube 13 that is provided with from top to bottom, sample bottle 14 and SPE electrolyzer 4, also be included as the 0-30A direct current adjustable constant current power supply 7 of electrolyzer with electricity and the pilot circuit 8 of control electrolyzer power source and the start and stop of heat sink power supply, heat sink comprises refrigerator 9 and places cooling bottle 15 in the refrigerator 9, recycle pump 19, water-cooled 3 and place wind-cooling heat dissipating case 20 on refrigerator 9 inwalls, sample bottle 14 and reflux condensing tube 13 all place in the cooling bottle 15, there is cooling fluid inlet 12 cooling bottle 15 upper ends, be full of cooling fluid in the cooling bottle 15, cooling bottle 15 upper ends and reflux condensing tube 13 upper ends are tightly connected, the lower end of reflux condensing tube 13 is connected with sample bottle 14 upper ends, sample bottle 14 lower ends are tightly connected with cooling bottle 15 lower ends, cooling bottle 15 lower ends have the import and export of cooling fluid respectively, water-cooled 3 is provided with two, be located at the tow sides of electrolyzer 4 respectively, the cooling fluid of cooling bottle 15 lower ends is imported and exported, recycle pump 19, wind-cooling heat dissipating case 20 and water-cooled 3 is communicated with into cooling fluid circulation loop through the pipeline circulation successively.Positive 5 negative 17 utmost points of SPE electrolyzer 4 connect the positive and negative electrode of the direct current adjustable constant current power supply 7 of 0-30A, the oxygen 6 of electrolyzer and hydrogen 18 outlets are respectively by taking back stream prolong 13 behind the sample bottle 14, connect oxygen vapor pipe 10 and hydrogen vapor pipe 11 more respectively to refrigerator 9, this oxygen vapor pipe 10 and hydrogen vapor pipe 11 also are the application of sample mouth simultaneously, sample bottle 14 outlets that connect oxygen 6 are connected to the injection port 2 of being located at electrolyzer 4 bottoms with sample bottle 14 outlets that are connected hydrogen 18 by three-way pipeline, this injection port 2 also is a nesting port simultaneously, and this nesting port 2 is provided with drainage switch.Also comprise laser transmitter and laser pickoff 16, be located at the pipe tunnel both sides in the lateral that connects the outlet of oxygen 6 sample bottles relatively, the pipe tunnel position that is between relative laser transmitter and the laser pickoff 16 is transparent, be transparent glass tube, laser pickoff output liquid level signal is to pilot circuit.Electrolyzer 4 is equipped with electronic thermometer probe 1, and this electronic thermometer probe 1 output temperature transducing signal is to pilot circuit 8.
Laser transmitter, laser pickoff and the transparent glass tube that is between relative laser transmitter and the laser pickoff constitute the laser liquid-level controller, and the position of laser transmitter and laser pickoff is the setting liquid level of laser liquid-level controller just relatively.The laser liquid-level controller is a kind of device that utilizes laser to have the principle of different refraction angles to carry out tank level control at different transparent mediums, the liquid level of water can constantly descend because of electrolysis, when dropping to the setting liquid level, the laser liquid-level controller can send and stop electrolytic signal.Collect by the drainage switch of electrolyzer nesting port 2 through the sample that electrolytic enrichment is finished.Whole device all is positioned in the refrigerator 9 except direct current adjustable constant current power supply 7 and rear end pilot circuit 8.The rear end pilot circuit is responsible for electrolytic beginning, end and to the protection of direct current adjustable constant current power supply, refrigerator circuit.
When operating, at first be cleaning process: fill it up with sample bottle less than the deionized water of 1mS/m (as far as possible little) by application of sample mouth 10 with specific conductivity, the power supply of connection refrigerator 9 begins to freeze after about 1 hour (the refrigerator temperature is less than 10 ℃), the power supply of connecting recycle pump 19 and wind-cooling heat dissipating case 20 makes cooling fluid mobile in water-cooled 3 and cooling bottle 15, and then to electrolyzer 4, sample bottle 14 and reflux condensing tube 13 cool off, connect direct current adjustable constant current power supply 7 and supply with the direct supply of 20A to electrolyzer 4, beginning electrolytic cleaning 0.5 hour is discharged deionized water fully by electrolyzer nesting port 2; Then be sample electrolytic enrichment process: specific conductivity is joined sample bottle less than the 500-1250ml sample of 1mS/m (as far as possible little), after connection refrigerator 9, recycle pump 19 and wind-cooling heat dissipating case 20 begin refrigeration and cool off 1 hour (the refrigerator temperature is less than 10 ℃), connect direct current adjustable constant current power supply 7 and supply with the direct supply of 20A to electrolyzer 4, the beginning electrolytic enrichment, start-of-record electrolysis time and electrolyzer temperature; Behind the electrolysis certain hour, the liquid level of water is lower than the setting liquid level of laser liquid-level controller in the sample bottle, and laser liquid-level controller pilot circuit 8 to the back-end sends the electrolytic signal of end, closes all power supplys, and electrolysis finishes.By electrolyzer nesting port 2 sample in electrolyzer, sample bottle and the pipeline is discharged fully, record remaining liq volume or weight, the sample that electrolysis is finished and the scintillation solution of certain volume are mixed and made into the sample of liquid flashing counting.
Claims (10)
1. tritium electrolytic enrichment device in the water, it is characterized in that: comprise and be located in the heat sink and the reflux condensing tube (13) that is provided with from top to bottom, sample bottle (14) and SPE electrolyzer (4), also be included as the dc current stabilized power supply (7) of electrolyzer with electricity and the pilot circuit (8) of control electrolyzer power source and the start and stop of heat sink power supply, negative (17) utmost point in just (5) of described SPE electrolyzer (4) connects the positive and negative electrode of dc current stabilized power supply (7), oxygen of electrolyzer (6) and hydrogen (18) outlet are respectively by taking back stream prolong (13) behind the sample bottle (14), connect oxygen and hydrogen vapor pipe (10 more respectively, 11) to heat sink, this oxygen and hydrogen vapor pipe (10,11) also be the application of sample mouth simultaneously, sample bottle (14) outlet that connects oxygen (6) exports the injection port that is connected to electrolyzer (4) respectively by pipeline with the sample bottle that is connected hydrogen (18) (14), also comprise laser transmitter and laser pickoff (16), be located at the pipe tunnel both sides in connecting the outlet of oxygen (6) sample bottle and being connected one of two laterals that hydrogen (18) sample bottle exports relatively, the pipe tunnel position that is between laser transmitter and the laser pickoff (16) is transparent, and this laser pickoff output liquid level signal is to pilot circuit.
2. the device that concentrates according to claim 1, it is characterized in that: sample bottle (14) outlet of described connection oxygen (6) is connected to the injection port (2) of being located at electrolyzer (4) bottom with the sample bottle that is connected hydrogen (18) (14) outlet by three-way pipeline, this injection port (2) also is a nesting port simultaneously, and this nesting port (2) is provided with drainage switch.
3. the device that concentrates according to claim 1 is characterized in that: described heat sink is refrigerator (9).
4. the device that concentrates according to claim 1, it is characterized in that: described heat sink comprises refrigerator (9) and places the interior cooling bottle (15) of refrigerator (9), recycle pump (19) and water-cooled head (3), described sample bottle (14) and reflux condensing tube (13) all place in the cooling bottle (15), there is cooling fluid inlet (12) cooling bottle (15) upper end, be full of cooling fluid in the cooling bottle (15), cooling bottle (15) upper end is tightly connected with reflux condensing tube (13) upper end, the lower end of reflux condensing tube (13) is connected with sample bottle (14) upper end, sample bottle (14) lower end is tightly connected with cooling bottle (15) lower end, cooling bottle (15) lower end has the import and export of cooling fluid respectively, described water-cooled head is located at electrolyzer, and the cooling fluid of described cooling bottle (15) lower end is imported and exported, recycle pump (19) is communicated with into cooling fluid circulation loop through the pipeline circulation successively with water-cooled head (3).
5. the device that concentrates according to claim 4 is characterized in that: described heat sink also comprises the wind-cooling heat dissipating case (20) that places on refrigerator (9) inwall, and this wind-cooling heat dissipating case (20) is located between recycle pump (19) and the water-cooled head (3).
6. the device that concentrates according to claim 5 is characterized in that: described water-cooled head (3) is provided with two, is located at the tow sides of electrolyzer (4) respectively.
7. the device that concentrates according to claim 4 is characterized in that: described water-cooled head (3) is provided with two, is located at the tow sides of electrolyzer (4) respectively.
8. according to each described device that concentrates of claim 1 to 7, it is characterized in that: described electrolyzer (4) is equipped with electronic thermometer probe (1), and this electronic thermometer probe (1) output temperature transducing signal is to pilot circuit (8).
9. according to each described device that concentrates of claim 1 to 7, it is characterized in that: described laser transmitter and laser pickoff (16) are located at the pipe tunnel both sides in the lateral that is connected the outlet of oxygen (6) sample bottle relatively.
10. the device that concentrates according to claim 9 is characterized in that: described electrolyzer is equipped with electronic thermometer probe (1), and this electronic thermometer probe (1) output temperature transducing signal is to pilot circuit (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110247742A CN102286754B (en) | 2011-08-26 | 2011-08-26 | Electrolysis and concentration device of tritium in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110247742A CN102286754B (en) | 2011-08-26 | 2011-08-26 | Electrolysis and concentration device of tritium in water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102286754A true CN102286754A (en) | 2011-12-21 |
| CN102286754B CN102286754B (en) | 2012-07-04 |
Family
ID=45333501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110247742A Active CN102286754B (en) | 2011-08-26 | 2011-08-26 | Electrolysis and concentration device of tritium in water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102286754B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104318968A (en) * | 2014-08-21 | 2015-01-28 | 中国工程物理研究院核物理与化学研究所 | Process and device for treating tritium-containing water in nuclear power plant based on electrolysis and low-temperature distillation cascade process |
| CN106467975A (en) * | 2015-08-20 | 2017-03-01 | 环境保护部核与辐射安全中心 | HTO electrolytic enrichment equipment and method |
| CN106990427A (en) * | 2017-03-21 | 2017-07-28 | 榆林学院 | Electrolysis unit and detection method for detecting low-level tritium level in underground water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834002A (en) * | 2005-03-15 | 2006-09-20 | 大连世纪欣科高新技术开发有限公司 | Method of producing super-high pure tritium gas by utilizing heavy-water as raw material |
| CN101092704A (en) * | 2006-06-20 | 2007-12-26 | 柯香文 | Method for preparing extra high pure deuterium gas by using heavy water as raw material |
| US20090147905A1 (en) * | 2007-12-05 | 2009-06-11 | Kimberly-Clark Worldwide, Inc. | Ultrasonic treatment chamber for initiating thermonuclear fusion |
-
2011
- 2011-08-26 CN CN201110247742A patent/CN102286754B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1834002A (en) * | 2005-03-15 | 2006-09-20 | 大连世纪欣科高新技术开发有限公司 | Method of producing super-high pure tritium gas by utilizing heavy-water as raw material |
| CN101092704A (en) * | 2006-06-20 | 2007-12-26 | 柯香文 | Method for preparing extra high pure deuterium gas by using heavy water as raw material |
| US20090147905A1 (en) * | 2007-12-05 | 2009-06-11 | Kimberly-Clark Worldwide, Inc. | Ultrasonic treatment chamber for initiating thermonuclear fusion |
Non-Patent Citations (3)
| Title |
|---|
| 《核电子学与探测技术》 20031120 温雪莲等 SPE固体电解质氚水浓集装置及其应用 583-586 1-10 第23卷, 第06期 * |
| 《科技通报》 20090930 谢波等 固体聚合物电解池分离氚的理论分析 541-545 1-10 第25卷, 第5期 * |
| 《辐射防护》 19810731 孔繁信等 用电解浓集法测定水中氚 43-48 1-10 第1卷, 第4期 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104318968A (en) * | 2014-08-21 | 2015-01-28 | 中国工程物理研究院核物理与化学研究所 | Process and device for treating tritium-containing water in nuclear power plant based on electrolysis and low-temperature distillation cascade process |
| CN106467975A (en) * | 2015-08-20 | 2017-03-01 | 环境保护部核与辐射安全中心 | HTO electrolytic enrichment equipment and method |
| CN106467975B (en) * | 2015-08-20 | 2018-08-07 | 环境保护部核与辐射安全中心 | Surabaya electrolytic enrichment device and method |
| CN106990427A (en) * | 2017-03-21 | 2017-07-28 | 榆林学院 | Electrolysis unit and detection method for detecting low-level tritium level in underground water |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102286754B (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202226928U (en) | Tritium in water electrolysis thickening device | |
| CN102286754B (en) | Electrolysis and concentration device of tritium in water | |
| CN105316700A (en) | Electrolytic tank and application for electrochemical reduction reaction of carbon dioxide | |
| CN103616525A (en) | Instrument for rapidly monitoring total phosphorus in water on line | |
| CN107633756B (en) | Visible experimental device for carbon dioxide desublimation | |
| CN207877859U (en) | A kind of chemical nickel plating addition liquid equipment | |
| CN106467975B (en) | Surabaya electrolytic enrichment device and method | |
| CN202989295U (en) | Electrolysis concentration apparatus for tritium in environmental water | |
| CN202581770U (en) | Isolated gradient heating structure of preheating box for plasma thawing instrument | |
| CN101966426A (en) | Electric dialyzator for desalting fermentation liquor | |
| CN203519111U (en) | Photoelectric liquid level metering device | |
| CN207571066U (en) | A kind of portable hydrogen conductivity measuring device | |
| CN208239380U (en) | A kind of photochemical catalyzing activity rating device | |
| CN204877441U (en) | Thin oil metering device | |
| CN103668223B (en) | The long-term low temperature electrochemical performance testing device of sacrificial anode | |
| CN204898092U (en) | HTO electrolysis equipment of concentrating | |
| CN205773484U (en) | A kind of uninterrupted power of alterating and direct current of constant voltage electronic bubbling degasser | |
| CN206580827U (en) | Gene sequencing electrophoresis tank | |
| CN203400729U (en) | High tower anion and cation resin separation conductance interface detecting device | |
| CN215066410U (en) | Ion chromatograph | |
| CN203721111U (en) | Automatic data acquisition device for measurement of evaporation and rainfall | |
| CN204086186U (en) | A kind of hydrated cementitious heat test thermal discharge checkout equipment | |
| CN203965218U (en) | A kind of electrodialysis pretreatment unit | |
| CN207832544U (en) | Tritium purification instrument in a kind of water | |
| CN103940699A (en) | Device and method for measuring density of electrolyte inside storage battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |