CN105702309B - A kind of SPE electrolysis systems and its implementation for tritium concentration - Google Patents
A kind of SPE electrolysis systems and its implementation for tritium concentration Download PDFInfo
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- CN105702309B CN105702309B CN201610247741.9A CN201610247741A CN105702309B CN 105702309 B CN105702309 B CN 105702309B CN 201610247741 A CN201610247741 A CN 201610247741A CN 105702309 B CN105702309 B CN 105702309B
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- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 title claims abstract description 77
- 229910052722 tritium Inorganic materials 0.000 title claims abstract description 77
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 34
- 238000001035 drying Methods 0.000 claims abstract description 133
- 239000007789 gas Substances 0.000 claims abstract description 127
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 124
- 239000001257 hydrogen Substances 0.000 claims abstract description 124
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 92
- 239000002808 molecular sieve Substances 0.000 claims abstract description 86
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 86
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 85
- 239000001301 oxygen Substances 0.000 claims abstract description 85
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 85
- 238000003860 storage Methods 0.000 claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 29
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims description 45
- 150000001875 compounds Chemical class 0.000 claims description 43
- 239000012071 phase Substances 0.000 claims description 41
- 239000007791 liquid phase Substances 0.000 claims description 28
- 238000009792 diffusion process Methods 0.000 claims description 21
- 125000004122 cyclic group Chemical group 0.000 claims description 14
- 206010013786 Dry skin Diseases 0.000 claims description 11
- 239000012528 membrane Substances 0.000 claims description 11
- 238000006555 catalytic reaction Methods 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 9
- 239000000498 cooling water Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 230000003213 activating effect Effects 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000012512 characterization method Methods 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000003334 potential effect Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims description 3
- QRSFFHRCBYCWBS-UHFFFAOYSA-N [O].[O] Chemical compound [O].[O] QRSFFHRCBYCWBS-UHFFFAOYSA-N 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000001228 spectrum Methods 0.000 claims 1
- 238000002047 photoemission electron microscopy Methods 0.000 description 7
- 229920001483 poly(ethyl methacrylate) polymer Polymers 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000005173 quadrupole mass spectroscopy Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000010808 liquid waste Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000005518 polymer electrolyte Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229920000557 Nafion® Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000003471 anti-radiation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- HTXDPTMKBJXEOW-UHFFFAOYSA-N iridium(IV) oxide Inorganic materials O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 description 1
- 238000005372 isotope separation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005025 nuclear technology Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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
- G21F9/007—Recovery of isotopes from radioactive waste, e.g. fission products
-
- 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
- G21F9/04—Treating liquids
- G21F9/06—Processing
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Storage tank, condenser system and detection and control system are collected the invention discloses a kind of SPE electrolysis systems for tritium concentration, including cell system, supply system containing HTO, gas-liquid separator, HTO collection system, hydrogen drying system for hydrogen, oxygen drying system, hydrogen collection, product oxygen.Present invention also offers the implementation method that this is used for the SPE electrolysis systems of tritium concentration.Electrolysis system of the present invention can meet whole process requirements of water phase tritium concentration, including HTO circulation concentration, hydrogen leakage emergency power off, the molecular sieve drying uninterrupted handling process of bed etc..Meanwhile, the circulation concentration containing HTO allows that the concentration of concentration containing HTO is quantified and controls, and greatly improves tritium concentration efficiency, and also obtain a large amount of poor hydrogen tritide gas.
Description
Technical field
The present invention relates to chemical industry and nuclear technology and apparatus field, and in particular to be a kind of SPE electrolysis for tritium concentration
System and its implementation.
Background technology
Nuclear power station running can produce tritium-containing liquid waste, if radioactivity tritium-containing liquid waste can not be disposed rationally, it will cause
Serious environmental pollution.And in nature tritium abundance it is extremely low, containing in HTO tritium recovery have economic worth very high.Cause
This, develops efficient, energy-saving and environmental protection, the water of low cost and goes tritiated technology and equipment, for reclaiming tritium element, and reaches waste water
Environmental emission index, all has very important significance.
Solid polymer electrolyte (Solid Polymer Electrolyte, SPE) is electrolysed, i.e. SPE electrolysis, for containing
HTO tritium enrichment process has obvious advantage：(1) solid polymer dielectric film has excellent hydrogen isotope separation performance,
Tritium T+Permeable membrane ability is much smaller than hydrogen H+So that while SPE electrolysis produce poor hydrogen tritide gas, tritium is concentrated in into liquid phase；(2) SPE films are also
With excellent anti-radiation performance, there is significant durability for the treatment of radiativity tritium.Current existing electrolysis-catalysis is handed over
Change water and go tritiated technique (CECE), SPE electrolysis and hydrogen isotope are catalyzed into exchange process couples, with very it is high go tritium because
Son.
Require that there is treating capacity higher when SPE is electrolysed for tritium enrichment process, it is necessary to develop perfect efficient technique system
System, it is ensured that while system safety operation, improves system ability of the treatment containing HTO；Membrane electrode assembly must be increased simultaneously
The operating efficiency of (Membrane Electrode Assemblies, MEA), the improvement of bipolar plate flow field is for reducing contact electricity
Resistance, improve mass-transfer efficiency, improve electrolytic efficiency and reduce electrolysis cost it is most important.
The content of the invention
For above-mentioned the deficiencies in the prior art, the invention provides a kind of SPE electrolysis systems for tritium concentration and in fact
Existing method, can easily and accurately control concentrating process containing HTO, meet whole process requirements of tritium concentration process, and significantly
Improve PROCESS FOR TREATMENT efficiency.
To achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of SPE electrolysis systems for tritium concentration, including cell system, supply system containing HTO, gas-liquid separator,
HTO collection system, hydrogen drying system for hydrogen, oxygen drying system, hydrogen collection, product oxygen collect storage tank, condenser system
And detection and control system；Wherein：
The cell system is used to be electrolysed containing HTO, obtains tritium concentration water phase and poor hydrogen tritide gas；It includes SPE electrolytic cells
Module and dc source, described SPE electrolytic cells module include being sequentially overlapped anode bipolar plate, anode seal circle, the sun of assembling
Pole diffusion layer, anode catalyst layer, PEM, cathode catalysis layer, cathode diffusion layer, negative electrode sealing ring and cathode bipolar plate；
It is carved with anode bipolar plate runner, and the bipolar plate runner to be provided with the surface of the anode bipolar plate jointed anode diffusion layer and contains
HTO entrance and water oxygen are exported；Cathode bipolar plate runner is carved with the surface of the cathode bipolar plate connection cathode diffusion layer, and should
Bipolar plate runner is provided only with hydrogen outlet；Described DC power anode jointed anode bipolar plates, negative pole connection cathode bipolar plate；
The supply system containing HTO is connected with the entrance containing HTO in the bipolar plate runner in anode bipolar plate, for
The supply of SPE electrolytic cells module contains HTO, and the circulation containing HTO of not up to tritium concentration index introduces SPE electrolysis after SPE is electrolysed
Continued with the module of pond；
The gas-liquid separator respectively with SPE electrolytic cell modules in water oxygen outlet, HTO collection system, oxygen dry system
System connection, rich HTO and oxygen two-phase mixture for SPE electrolytic cells module to be flowed out carry out gas-liquid separation, enter oxygen
Oxygen drying system, rich HTO enters HTO collection system；
The HTO collection system is connected with supply system containing HTO, for detecting the rich tritium flowed out by Separate System of Water-jet
Water concentration, collection reach concentration index containing HTO, and by concentration it is below standard containing HTO circulation input supply system containing HTO；
The hydrogen drying system for hydrogen is used to dry the poor hydrogen tritide gas flowed out by the hydrogen outlet in SPE electrolytic cell modules, and
And can realize that molecular sieve drying bed dries and activates and ensure the continuous unbroken target of technique simultaneously；It is included and hydrogen
Outlet connects and in the first molecular sieve drying bed and the second molecular sieve drying bed of parallel relationship, is arranged on the first molecular sieve and does
It is used for the first molecular sieve drying bed heater heated to it on dry bed, is arranged on the second molecular sieve drying bed for right
The second molecular sieve drying bed heater that it is heated, while the first gas being connected with the first and second molecular sieve dryings bed
Compressor and first gas heater, at the same bed be connected with the first molecular sieve drying bed and the second molecular sieve drying, for activating
When remove the first condenser of vapor in molecular sieve drying bed, and the first gas that be connecteds with the first condenser are circulated
Pump；The first gas compressor is connected with hydrogen collection；
The oxygen drying system is used to dry the oxygen after gas-liquid separation, removes the vapor in oxygen, and to product
Oxygen collects storage tank and is input into qualified oxygen product, and the system can also realize that molecular sieve drying bed dries and activates and ensure simultaneously
The continuous target of technique；It includes being connected with Separate System of Water-jet and in the type three-molecular screen alternating drying bed of parallel relationship and the 4th
Molecular sieve drying bed, is arranged on type three-molecular screen alternating drying bed the type three-molecular screen alternating drying bed heating for being used to heat it
Device, is arranged on the 4th molecular sieve drying bed the second molecular sieve drying bed heater for being heated to it, while with the
Three and the 4th molecular sieve drying bed connection second gas compressor and second gas heater, while with the third and fourth molecule
Sieve drying bed connection, for activating when remove molecular sieve drying bed in vapor the second condenser, and with second condensation
The second gas circulating pump of device connection；The second gas compressor collects storage tank with product oxygen；
The poor hydrogen tritide gas that the hydrogen collection is used for after tritium concentration is detected carries out shunting treatment, and collects tritium respectively
The hydrogen that concentration touches the mark and falls short of the target；
The product oxygen collects storage tank to be used to store dried oxygen；
The condenser system with the first condenser including being connected, the first cooling-water machine for being cooled down to it, with second
Condenser connection, the second cooling-water machine for being cooled down to it, and for obtained by condenser is cooled down containing HTO input
3rd liquid phase quality flowmeter of HTO collection system；
The detection and control system are done with SPE electrolytic cells module, supply system containing HTO, HTO collection system, hydrogen
Drying system, oxygen drying system, hydrogen collection, product oxygen collect storage tank, condenser system connection, for detecting and controlling
The pressure of system, liquid level, humidity and tritium concentration, and carry out emergency power off treatment for electrolytic cell hydrogen leak accident.
Specifically, the bipolar plate runner includes the compound runner bending connection successively from top to bottom by being not less than five foldings
The serpentine channel for constitute, being flowed wherein for fluid；The rear and front end for often rolling over compound runner is equipped with point-like matrix structure
The Cylinder Group of design, also, be equipped with staggeredly mode point on the compound runner of every folding and between the Cylinder Group of two ends
Compound runner is simultaneously divided into the parallel fluid channels ridge of N bar parallel fluid channels from top to bottom for cloth, 4≤N, and adjacent parallel fluid channels ridge it
Between be equipped with for connecting adjacent two parallel fluid channels, the openings to balance Fluid pressure and flow velocity in compound runner；
Meanwhile, from top to bottom, the bar number of its parallel fluid channels successively decreases described compound runner successively according to the mode of equal difference.
Further, in the present invention, on the anode bipolar plate runner, described entrance containing HTO is arranged on the bipolar plates
The end of the compound runner of the top in runner；Described water oxygen outlet is arranged on the combined-flow of bottom in the bipolar plate runner
The end in road；And on the cathode bipolar plate runner, described hydrogen outlet is arranged on answering for bottom in the bipolar plate runner
Collaborate the end in road.
Yet further, in anode bipolar plate runner and cathode bipolar plate runner, in addition to the compound runner of the folding of bottommost one
Other compound runners in bottom parallel fluid channels, its width is wider than other parallel fluid channels by 50%；Meanwhile, bottommost is answered
The width of all parallel fluid channels in the road of interflow is identical with the bottom parallel fluid channels width in other compound runners.
Further, the end that often roll over is used to turn to fluid in compound runner is equipped with the rounded corner that smoothly transits.
Specifically, the pump discharge of supply system containing HTO includes what is be connected with the entrance containing HTO on SPE electrolytic cells
Measuring pump, the pending storage tank containing HTO that delivery port is connected with the measuring pump pump intake, and pump discharge contains HTO storage tank with this
The water-circulating pump of water inlet connection；The storage tank containing HTO is connected with detection and control system；The pump intake of the water-circulating pump
It is connected with HTO collection system.
Specifically, the HTO collection system be connected with gas-liquid separator including water inlet, for collecting below standard containing
The cyclic water tank of HTO, and water inlet be connected with gas-liquid separator, the product HTO storage tank for collecting rich HTO；It is described to follow
Ring water outlet of water tank is connected with the pump intake of water-circulating pump, and cyclic water tank and product HTO storage tank with detection and control system
Connection.
Specifically, the hydrogen collection includes that what is be connected with first gas compressor refers to for collecting tritium level
The product hydrogen-holder of target hydrogen and the below standard hydrogen-holder for collecting below standard hydrogen；The product hydrogen-holder and
Below standard hydrogen-holder is connected with detection and control system.
Specifically, the detection and control system include storing up tank connected first tank gage containing HTO with pending, with
Second tank gage of cyclic water tank connection, tank connected 3rd tank gage is stored up with product HTO, is connected with product hydrogen-holder
First pressure sensor, the second pressure sensor being connected with below standard hydrogen-holder collects storage tank connected with product oxygen
3rd pressure sensor, is connected between cathode of electrolytic tank bipolar plates hydrogen outlet and first, second molecular sieve drying bed the
One dew point hygrometer, is connected to the second dew point hygrometer connected between first, second molecular sieve drying bed and first gas compressor, connection
In the 3rd dew point hygrometer of first gas circulating pump tail end, it is connected between gas-liquid separator and the three, the 4th molecular sieve dryings bed
The 4th dew point hygrometer, be connected to the three, the 4th molecular sieve dryings bed and second gas compressor between connect the 5th dew point hygrometer,
The 6th dew point hygrometer of second gas circulating pump tail end is connected to, is connected with SPE electrolytic cell modules, for characterization processes operating environment
Hydrogen alarm, and for detecting the magnetic mass spectrometer of rich HTO concentration after gas-liquid separator, for measuring hydrogen tritium level
QMS and for stopping the relay to SPE electrolytic cell module for power supply in hydrogen leak.
Based on said structure, present invention also offers the implementation method of the SPE electrolysis systems, comprise the following steps：
(1) pressurize test and debugging are carried out to system, it is ensured that reach operation and require；
(2) pipeline and storage container are transported to hydrogen carries out vacuumize process, until vacuum reaches below 5Pa；
(3) it is enough pending containing HTO to being input into pending storage tank containing HTO；
(4) contain HTO to the anode bipolar plate input of SPE electrolytic cell modules, connect straight after membrane module obtains fully wetting
Stream power supply；
(5) the lower electrolysis on anode catalyst layer containing HTO of current potential effect is oxygen and proton, and oxygen is returned through anode diffusion layer
To in the bipolar plate runner of anode bipolar plate, proton then passes through PEM, and hydrogen is reduced under cathode catalysis layer effect；
And the oxygen that the water not being electrolysed and electrolysis are produced then is exported from the water oxygen of the bipolar plate runner of anode bipolar plate and drawn, and it is passed through gas
Liquid/gas separator is separated；
(6) oxygen after separating enters product oxygen and collects storage in storage tank after drying, and reaches tritium enrichment index
Then enter product HTO storage tank containing HTO, below standard is incorporated into cyclic water tank containing HTO；
(7) gas containing hydrogen tritide being enriched with the bipolar plate runner on cathode bipolar plate is drawn in hydrogen outlet, then through drying
Afterwards, the hydrogen for reaching tritium level index enters storage in product hydrogen storage tank, and below standard gas containing hydrogen tritide is then entered into and do not reached
Mark hydrogen-holder；
(8) when pending tank level containing HTO is less than 5cm, by water-circulating pump by the tritium of not up to tritium concentration index
What water and condenser system were condensed is input into pending storage tank containing HTO containing HTO, or is introduced from outside into containing HTO；
(9) circulation step (4)~(8).
Compared with prior art, the invention has the advantages that：
(1) to be not only electrolysed hydrogen purity (>=99.999%) high for the SPE electrolytic cells module of present invention design, and can have
Effect reduces ohmic loss, has the advantages that required voltage is small, current density is big, operational heat amount is few, electrolytic efficiency is high.
(2) present invention greatly improves pure water diffusion and anode bipolar plate deoxygenation ability, its not only along journey pressure drop it is small,
Flow area is big, and membrane electrode high working efficiency.
(3) structure design by improving bipolar plate runner of the invention, is provided with is made up of the compound runner of many foldings thereon
Serpentine channel, and point-like matrix structure Cylinder Group is set in compound runner, so as to improve liquid phase carrier gas ability, solve
The problem of fluid exhaust problem in SPE electrolytic cell modules.
(4) the bar number of the parallel fluid channels in the compound runner of bipolar plate runner of the present invention is successively decreased design, runner using equal difference
Journey flow velocity increase afterwards improves the ability that anode bipolar plate carries oxygen, while stroke pressure advantageously ensures that liquid phase spreads after improving
Ability, lifts membrane electrode operating efficiency.And often roll over the institute of the compound runner of parallel fluid channels and bottom of compound runner bottom
There is the width of parallel fluid channels wider than other parallel fluid channels by 50%, can be distributed flow field velocity more uniform.
(5) end of the present invention for turning to fluid in the compound runner of every folding is equipped with the rounded corner that smoothly transits, can
Fluid is further reduced along journey pressure drop, it is advantageously each to fluid is evenly distributed in runner, reduce flow field dead band.
(6) the poor hydrogen tritide gas and oxygen drying system of present invention design are dry comprising two sets of independent molecular sieve drying beds respectively
Drying system, molecular sieve drying bed can be independent of each other with alternate run, while a set of molecular sieve drying bed is dried water removal,
Another set of molecular sieve drying bed can carry out pre- hot recycling, it is ensured that the uninterrupted operation of system, improve system operating efficiency.
(7) present invention realizes the circulation concentration containing HTO, so that not reaching by rational structure and flow scheme design
To tritium concentration index containing HTO circulation input raw material storage tank, what is touched the mark is stored in product storage tank containing HTO, at utmost real
Showed tritium-containing liquid waste goes tritiated treatment.
(8) hydrogen and oxygen that generation is electrolysed in SPE electrolysis systems of the present invention are isolated by semipermeable membrane, will not be produced
Detonation gas, has a safety feature；Simultaneity factor set hydrogen alarm, start cut-off relay in hydrogen leak, stop to
Electrolytic cell is powered.
(9) present invention combines multiple technologies principle and practical structures, and the ingenious, compact conformation of design, flow are apparent, operation
Convenient, operating flexibility is big, can meet whole process requirements that SPE is electrolysed tritium concentration process, and tritium concentration treatment greatly improved
Efficiency, realizes the relative equilibrium of cost and technology, the drawbacks of ideally solve prior art.Therefore, the technological progress is bright
It is aobvious, with prominent substantive distinguishing features and significant progress, it is highly suitable for carrying out popularization and application in association area.
Brief description of the drawings
Fig. 1 is system structure diagram of the invention.
Fig. 2 is the structural decomposition diagram of SPE electrolytic cell modules in the present invention.
Fig. 3 is the structural representation of bipolar plate runner in the present invention.
Fig. 4 is that the present invention uses the first molecular sieve drying bed and type three-molecular screen alternating drying bed dry hydrogen and oxygen respectively
Fundamental diagram.
Fig. 5 is that the present invention uses the second molecular sieve drying bed and the 4th molecular sieve drying bed dry hydrogen and oxygen respectively
Fundamental diagram.
Wherein, the corresponding each component names of reference are：
1-SPE electrolytic cell modules, 101- Cylinder Groups, 102- parallel fluid channels ridges, 103- parallel fluid channels, 104- openings,
105- smoothly transits rounded corner, and 106- anode bipolar plates, 107- anode seal circles, 108- anode diffusion layers, 109- is anode-catalyzed
Layer, 110- PEMs, 111- cathode catalysis layers, 112- cathode diffusion layers, 113- negative electrode sealing rings, 114- cathode bipolars
Plate, 115- bipolar plate runners, 2- the first liquid phase valves, 3- the first liquid phase quality flowmeters, the pending storage tanks containing HTO of 4-, 5-
One tank gage, 6- measuring pumps, 7- dc sources, 8- cut-off relays, 9- hydrogen alarms, 10- gas-liquid two-phase valves, 11- gas
Liquid/gas separator, 12- magnetic mass spectrometers, 13- second liquid phase valves, the tank gages of 14- second, 15- cyclic water tanks, 16- water-circulating pumps,
The liquid phase valves of 17- the 3rd, the liquid phase valves of 18- the 4th, 19- product HTO storage tanks, the tank gages of 20- the 3rd, 21- second liquid phase quality
Flowmeter, the liquid phase valves of 22- the 5th, the dew point hygrometers of 23- first, 24- the first gas phase valves, the bed heating of the molecular sieve dryings of 25- first
Device, the molecular sieve dryings of 26- first bed, 27- the second gas phase valves, the gas phase valves of 28- the 3rd, the molecular sieve dryings of 29- second bed adds
Hot device, the molecular sieve dryings of 30- second bed, the gas phase valves of 31- the 4th, the dew point hygrometers of 32- second, the gas phase valves of 33- the 5th, 34- the
One gas compressor, 35- QMSs, the gas phase valves of 36- the 6th, the dew point hygrometers of 37- the 3rd, 38- first gas heaters,
The gas phase valves of 39- the 7th, the gas phase valves of 40- the 8th, the gas phase valves of 41- the 9th, the gas phase valves of 42- the tenth, 43- first is condensed
Device, 44- first gas circulating pumps, the gas phase valves of 45- the 11st, 46- product hydrogen-holders, 47- first pressure sensors, 48-
First gas mass flowmenter, the gas phase valves of 49- the 12nd, the gas phase valves of 50- the 13rd, the below standard hydrogen-holders of 51-, 52-
Second pressure sensor, 53- second gas mass flowmenters, the gas phase valves of 54- the 14th, the liquid phase valves of 55- the 6th, 56-
One cooling-water machine, the liquid phase valves of 57- the 7th, the liquid phase valves of 58- the 8th, the liquid phase quality flowmeters of 59- the 3rd, the dew point hygrometers of 60- the 4th,
The gas phase valves of 61- the 15th, 62- type three-molecular screen alternating drying bed heaters, 63- type three-molecular screen alternating drying beds, the gas phases of 64- the 16th
Valve, the gas phase valves of 65- the 17th, the sieve adsorpting bed heaters of 66- the 4th, the molecular sieve dryings of 67- the 4th bed, 68- the tenth
Eight gas phase valves, the dew point hygrometers of 69- the 5th, the gas phase valves of 70- the 19th, 71- second gas compressors, the gas valves of 72- the 20th
Door, the dew point hygrometers of 73- the 6th, 74- second gas heaters, the gas phase valves of 75- the 2nd 1, the gas phase valves of 76- the two or two, 77- the
Two or three gas phase valves, the gas phase valves of 78- the two or four, the condensers of 79- second, 80- second gas circulating pumps, the liquid phase valves of 81- the 9th
Door, the cooling-water machines of 82- second, the liquid phase valves of 83- the tenth, the liquid phase valves of 84- the 11st, the gas phase valves of 85- the two or five, 86- products
Oxygen collects storage tank, the pressure sensors of 87- the 3rd, 88- third gas mass flowmenters, the gas phase valves of 89- the two or six.
Specific embodiment
The invention will be further described with embodiment for explanation below in conjunction with the accompanying drawings, and mode of the invention includes but not only limits
In following examples.
As shown in figure 1, the invention provides a kind of SPE electrolysis systems, which employs combined type flow field.The present invention includes electricity
Solution cell system, supply system containing HTO, gas-liquid separator 11, HTO collection system, hydrogen drying system for hydrogen, oxygen drying system,
Hydrogen collection, product oxygen collect storage tank 86, condenser system and detection and control system.
The cell system is used to be electrolysed containing HTO, obtains tritium concentration water phase and poor hydrogen tritide gas；It includes SPE electrolytic cells
Module 1 and dc source 7.As shown in Fig. 2 described SPE electrolytic cells module 1 includes being sequentially overlapped the anode bipolar plate of assembling
106th, anode seal circle 107, anode diffusion layer 108, anode catalyst layer 109, PEM 110, cathode catalysis layer 111, the moon
Pole diffusion layer 112, negative electrode sealing ring 113 and cathode bipolar plate 114；The jointed anode diffusion layer 108 of the anode bipolar plate 106
It is carved with surface in anode bipolar plate runner 115, and the bipolar plate runner and is respectively equipped with entrance containing HTO and water oxygen outlet；It is described
Cathode bipolar plate runner is also carved with the surface of the connection cathode diffusion layer 112 of cathode bipolar plate 114, and the bipolar plate runner only sets
There is hydrogen outlet；The described positive pole jointed anode bipolar plates 106 of dc source 7, negative pole connection cathode bipolar plate 106.This implementation
In example, diffusion layer, Catalytic Layer and PEM constituting membrane electrode assembly are the core components of SPE electrolytic cell modules.And it is described
The preferred high resiliency of sealing ring, corrosion resistant silicone rubber O-ring, thickness preferably 0.5~1mm, at the same in bipolar plates set sealing
Circle dashpot, agrees with sealing ring.
In above-mentioned part, described anode bipolar plate 106 and cathode bipolar plate 114 are preferably using titanium alloy or other are resistance to
The stainless steel that resistant alloy is surface-treated is made.Anode diffusion layer 108 carries out plating the stainless (steel) wire that tantalum is processed using surface,
The preferred sintered porous titanium of cathode diffusion layer 112, it is ensured that permeability and durability.The anode catalyst layer 109 uses IrO2Catalysis
Agent, cathode catalysis layer 111 uses the black catalyst of Pt, and negative electrode and anode catalyst layer are respectively coated with proton exchange through spraying coating process
The both sides of film 110, the PEM 110 is used as transmission H+Medium, using perfluoro sulfonic acid membrane, the preferred E.I.Du Pont Company of the present embodiment
The films of Nafion 111 of production.
Additionally, as another main improvement of the invention, as shown in figure 3, in the present embodiment, described bipolar plate runner
Including by the compound runner no less than five foldings (the present embodiment use five foldings) from top to bottom successively bending connect and compose, for containing tritium
The serpentine channel that water flows wherein.The rear and front end for often rolling over compound runner (depth preferably 1.2~2.0mm) is equipped with point-like
The Cylinder Group 101 (Cylinder Group in matrix is distributed in the mode that 60 ° of angles interlock, body diameter 2mm) of matrix structure design,
Also, it is equipped with every compound runner of folding and between the Cylinder Group of two ends and be distributed in staggeredly mode and by compound runner
It is divided into the parallel fluid channels ridge 102 (width is 1.5~2.0mm) of N bars parallel fluid channels 103 from top to bottom, meanwhile, adjacent concurrent flow
Be equipped between road ridge for connecting adjacent two parallel fluid channels, to balance passing through for the Fluid pressure in compound runner and flow velocity
Port 104.
Additionally, described compound runner is from top to bottom, the bar number of its parallel fluid channels successively decreases successively according to the mode of equal difference, this
In embodiment, the compound runner of the top has 108 parallel fluid channels, and equal difference is successively decreased a concurrent flow successively for compound runner down
The compound runner in road, i.e. bottom has 4 parallel fluid channels.Also, other the compound runners in addition to the compound runner of the folding of bottommost one
In bottom parallel fluid channels, its width is wider than other parallel fluid channels by 50%, and all flat in the compound runner of bottommost
The width of row runner is identical with the bottom parallel fluid channels width in other compound runners.
Further, since employing the design structure of serpentine channel, fluid when being reduction runner deflecting is often rolled over along journey pressure drop
In compound runner the rounded corner 105 that smoothly transits is equipped with for the end for turning to fluid.
The supply system containing HTO is used to contain HTO, and not up to tritium after SPE is electrolysed to the supply of SPE electrolytic cells module
The circulation containing HTO of concentration index is introduced into SPE electrolytic cell modules and continues with.This contain HTO supply system pump discharge include with
The measuring pump 6 of the connection of entrance containing HTO on SPE electrolytic cells, delivery port is pending containing tritium with what the pump intake of measuring pump 6 was connected
Water storage tank 4, and pump discharge contains the water-circulating pump 16 that the water inlet of HTO storage tank 4 is connected with this.Also, described storage tank containing HTO
4 are also associated with, for supplementing the pipeline containing HTO, including the first liquid phase valve 2 and the first liquid phase quality flowmeter 3, being followed by water
Ring pump 16 and the connection cyclic water tank 15 of the 3rd liquid phase valve 17, realize that concentration is below standard and contain HTO containing HTO and condenser system condensation
Circular treatment.
The gas-liquid separator 11 is exported with the water oxygen in SPE electrolytic cell modules by gas-liquid two-phase valve 10 and is connected, and
And be also connected with HTO collection system, oxygen drying system respectively, for the rich HTO and oxygen that flow out SPE electrolytic cells module
Two-phase mixture carries out gas-liquid separation, oxygen is entered oxygen drying system, and rich HTO enters HTO collection system.
The HTO collection system is used to detect the rich HTO concentration flowed out by Separate System of Water-jet that collection to reach concentration and refers to
Target contains HTO, and the below standard circulation containing HTO of concentration is input into supply system containing HTO.The HTO collection system include into
The mouth of a river is connected with gas-liquid separator 11, for collecting the below standard cyclic water tank containing HTO (being transmitted through second liquid phase valve 13)
15, and water inlet be connected with gas-liquid separator 11, the product tritium for collecting rich HTO (being transmitted through the 4th liquid phase valve 18)
Water storage tank 19；The delivery port of the cyclic water tank 15 is connected with the pump intake of water-circulating pump 16.Additionally, product HTO storage tank 19 also connects
The liquid phase valve 22 of second liquid phase mass flowmenter 21 and the 5th is connect, for the rich HTO of outwards output.
The hydrogen drying system for hydrogen is used to dry the poor hydrogen tritide gas flowed out by the hydrogen outlet in SPE electrolytic cell modules.Should
Hydrogen drying system for hydrogen includes being connected with hydrogen outlet and in the first molecular sieve drying bed 26 of parallel relationship and the second molecular sieve
Drying bed 30, is arranged on the first molecular sieve drying bed 26 the first molecular sieve drying bed heater for being heated to it
25, the second molecular sieve drying bed heater 29 for being heated to it is arranged on the second molecular sieve drying bed 30, while
With the first and second molecular sieve dryings bed the first gas compressor 34 and first gas heater 38 that are connected, while with first point
The connection of son sieve drying bed 26 and second molecular sieve drying bed 30, for activating when remove the of vapor in molecular sieve drying bed
One condenser 43, the first gas circulating pump 44 being connected with the first condenser 43, and be connected to gas phase valve 24 in pipeline,
27、28、31、33、36、39、40、41、42。
The oxygen drying system is used to dry the oxygen after gas-liquid separation, removes the vapor in oxygen, and to product
Oxygen collects storage tank and is input into qualified oxygen product.The oxygen drying system includes being connected with Separate System of Water-jet and is closed in parallel connection
The molecular sieve drying of type three-molecular screen alternating drying bed 63 and the 4th bed 67 of system, being arranged on type three-molecular screen alternating drying bed 63 is used for it
The type three-molecular screen alternating drying bed heater 62 for being heated, is arranged on the 4th molecular sieve drying bed 67 for being heated to it
The second molecular sieve drying bed heater 66, while with the third and fourth molecular sieve drying second gas compressor 71 for being connected of bed
With second gas heater 74, while with the third and fourth molecular sieve drying bed be connected, for activating when remove molecular sieve drying
Second condenser 79 of the vapor in bed, the second gas circulating pump 80 being connected with the second condenser 79, and it is connected to pipe
Gas phase valve 61,64,65,68,70,72,75,76,77,78 in road.The second gas compressor 71 is received with product oxygen
Collection storage tank 86.
The poor hydrogen tritide gas that the hydrogen collection is used for after tritium concentration is detected carries out shunting treatment, and collects tritium respectively
The hydrogen that concentration touches the mark and falls short of the target.The hydrogen collection includes the use being connected with first gas compressor 34
Below standard hydrogen-holder 51 in the product hydrogen-holder 46 of the hydrogen for collecting tritium level index and for collecting below standard hydrogen.
Also, the product hydrogen-holder 46 is connected with the gas phase valve 49 of first gas mass flowmenter 48 and the 12nd, and outwards output is produced
Product, the below standard hydrogen-holder 51 is by the outwards output of gas phase valve 54 of second gas mass flowmenter 53 and the 14th.
The product oxygen collects storage tank 86 to be used to store dried oxygen, and in the present embodiment, dry oxygen is by the
Two or five gas phase valves 85 are passed through product product oxygen and collect storage tank 86, and product oxygen collects the connection third gas quality stream of storage tank 86
The outside output products of 88 and the 2nd 6 gas phase valve of gauge 89.
The condenser system with the first condenser 43 including being connected, the first cooling-water machine 56 for being cooled down to it, with
Second condenser 79 is connected, the second cooling-water machine 82 for being cooled down to it, for obtained by condenser is cooled down containing HTO
It is input into the 3rd liquid phase quality flowmeter 59 of HTO collection system, and liquid phase valve 55,57,58,81,83 and 84.
The detection and control system are used for pressure, liquid level, humidity and the tritium concentration of detection and control system, and for electricity
Solution pond hydrogen leak accident carries out emergency power off treatment.The detection and control system include being connected with pending storage tank containing HTO 4
The first tank gage 5, the second tank gage 14 being connected with cyclic water tank 15, the 3rd tank gage being connected with product HTO storage tank 19
20, the first pressure sensor 47 being connected with product hydrogen-holder 46, the second pressure being connected with below standard hydrogen-holder 51 is passed
Sensor 52, the 3rd pressure sensor 87 that storage tank 86 is connected is collected with product oxygen, is connected to cathode of electrolytic tank bipolar plates hydrogen
The first dew point hygrometer 23 between outlet and first, second molecular sieve drying bed, is connected to first, second molecular sieve drying bed and the
The second dew point hygrometer 32 connected between one gas compressor 34, is connected to the 3rd dew point hygrometer of the tail end of first gas circulating pump 44
37, the 4th dew point hygrometer 60 between the molecular sieve drying of gas-liquid separator 11 and the three, the 4th bed is connected to, it is connected to the 3rd, the
The 5th dew point hygrometer 69 connected between four molecular sieve dryings bed and second gas compressor 71, is connected to second gas circulating pump 80
6th dew point hygrometer 73 of tail end, is connected, for the hydrogen alarm 9 of characterization processes operating environment with SPE electrolytic cell modules, and
Magnetic mass spectrometer 12, the and of QMS 35 for measuring hydrogen tritium level for detecting rich HTO concentration after gas-liquid separator
For stopping the relay 8 to SPE electrolytic cell module for power supply in hydrogen leak.
According to said system structure, workflow of the invention is described in detail below：
(1) pressurize test and debugging are carried out to system, it is ensured that reach operation and require；
(2) pipeline and storage container are transported to hydrogen carries out vacuumize process, until vacuum reaches below 5Pa；
(3) it is enough pending containing HTO to being input into pending storage tank containing HTO；
(4) contain HTO to the anode bipolar plate input of SPE electrolytic cell modules, connect straight after membrane module obtains fully wetting
Stream power supply；
(5) the lower electrolysis on anode catalyst layer containing HTO of current potential effect is oxygen and proton, and oxygen is returned through anode diffusion layer
To in the bipolar plate runner of anode bipolar plate, proton then passes through PEM, and hydrogen is reduced under cathode catalysis layer effect；
And the oxygen that the water not being electrolysed and electrolysis are produced then is exported from the water oxygen of the bipolar plate runner of anode bipolar plate and drawn, and it is passed through gas
Liquid/gas separator is separated；
(6) oxygen after separating enters product oxygen and collects storage in storage tank after drying, and reaches tritium enrichment index
Then enter product HTO storage tank containing HTO, below standard is incorporated into cyclic water tank containing HTO；
(7) gas containing hydrogen tritide being enriched with the bipolar plate runner on cathode bipolar plate is drawn in hydrogen outlet, then through drying
Afterwards, the hydrogen for reaching tritium level index enters storage in product hydrogen storage tank, and below standard gas containing hydrogen tritide is then entered into and do not reached
Mark hydrogen-holder；
(8) when pending tank level containing HTO is less than 5cm, by water-circulating pump by the tritium of not up to tritium concentration index
What water and condenser system were condensed is input into pending storage tank containing HTO containing HTO, or is introduced from outside into containing HTO；
(9) circulation step (4)~(8).
During above-mentioned gathered data, the dew point hygrometer data before and after Real-time Collection contrast work molecular sieve drying bed, such as
Really the second dew point hygrometer 32 or the 5th dew point hygrometer 69 reach -30 degree, then molecular sieve drying bed is disabled, while gas to be dried is cut
Another molecular sieve drying bed is changed to, and it carries out heating water removal activation to the former.
In the present embodiment, in process described above system, gas valve is gas diaphragm valve, and Liquid valve is liquid
Body ball valve, it is ensured that while accurate control gas and liquid flow, it is ensured that the stability of system operation.
Fig. 4 is that the present invention uses the first molecular sieve drying bed and type three-molecular screen alternating drying bed dry hydrogen and oxygen respectively
Fundamental diagram.Fig. 5 uses the second molecular sieve drying bed and the 4th molecular sieve drying bed dry hydrogen and oxygen respectively for the present invention
The fundamental diagram of gas.By taking Fig. 4 as an example, description hydrogen drying system for hydrogen open the first molecular sieve drying bed 26 dry hydrogens after,
To the technique of the activation of the second molecular sieve drying bed 30：
(1) first gas heater 38, the first condenser 43 and first gas circulating pump 44 are opened, the second molecular sieve is opened
Drying bed heater 29 simultaneously sets 350 DEG C of temperature；
(2) the poor tritium that the 6th gas phase valve 36 introduces quantitative first gas compressor 34 or hydrogen collection output is opened
Turned off after hydrogen；
(3) the poor hydrogen tritide gas after first gas heater 38 is heated, by molecular sieve in the second molecular sieve drying bed 30
Absorption water vapor；
(4) water vapour and poor hydrogen tritide gas are condensed in flowing into the first condenser 43, and water vapour is condensed into aqueous water and input is followed
Ring water tank 15, and poor hydrogen tritide gas enters first gas heater 38 through the pressurization Posterior circle of first gas circulating pump 44；
(5) circulation step (3), (4), until the registration of the 3rd dew point hygrometer 37 is down to -90 degree, close the second molecular sieve drying bed
Heater 29, first gas heater 38, the first condenser 43 and first gas circulating pump 44, reach through the detection of QMS 35
Product hydrogen product tank 46 is back to concentration index gas containing hydrogen tritide, below standard hydrogen-holder 51 is otherwise input into；
(6) preheating for completing the second molecular sieve drying bed 30 goes water to activate, and waits the first molecular sieve drying bed 26 to remove water energy
After power declines until the second dew point hygrometer 32 reaches -30 degree, switching is dried using the second molecular sieve drying bed 30, and is lived simultaneously
Change the first molecular sieve drying bed 26.
The present invention is designed by rational structure and operating process, not only can quickly and accurately control rich tritium after electrolysis
The tritium level of water, and significantly improve the efficiency of tritium enrichment.Therefore, the technology of the present invention progress is fairly obvious, and tritium is enriched with into system
The design of system and technique is lifted to a new height.
Above-described embodiment is only one of the preferred embodiment of the present invention, should not be taken to limit protection model of the invention
Enclose, it is all body design thought of the invention and mentally make have no the change of essential meaning or polishing, what it was solved
Technical problem is still consistent with the present invention, should be included within protection scope of the present invention.
Claims (10)
1. a kind of SPE electrolysis systems for tritium concentration, it is characterised in that：Including cell system, supply system containing HTO, gas
Liquid/gas separator (11), HTO collection system, hydrogen drying system for hydrogen, oxygen drying system, hydrogen collection, product oxygen are collected
Storage tank (86), condenser system and detection and control system；Wherein：
The cell system is used to be electrolysed containing HTO, obtains tritium concentration water phase and poor hydrogen tritide gas；It includes SPE electrolytic cell modules
(1) and dc source (7), described SPE electrolytic cells module (1) are including being sequentially overlapped anode bipolar plate (106), the anode of assembling
Sealing ring (107), anode diffusion layer (108), anode catalyst layer (109), PEM (110), cathode catalysis layer (111),
Cathode diffusion layer (112), negative electrode sealing ring (113) and cathode bipolar plate (114)；Anode bipolar plate (106) jointed anode
Anode bipolar plate runner (115) is carved with the surface of diffusion layer (108), and entrance containing HTO is respectively equipped with the bipolar plate runner
Exported with water oxygen；Cathode bipolar plate runner is carved with the surface of the cathode bipolar plate (114) connection cathode diffusion layer (112),
And the bipolar plate runner is provided only with hydrogen outlet；Described dc source (7) positive pole jointed anode bipolar plates (106), negative pole connects
Connect cathode bipolar plate (106)；
The supply system containing HTO is connected with the entrance containing HTO in the bipolar plate runner in anode bipolar plate, for SPE
The supply of electrolytic cell module contains HTO, and the circulation containing HTO of not up to tritium concentration index introduces SPE electrolytic cell moulds after SPE is electrolysed
Continued with block；
The gas-liquid separator (11) respectively with SPE electrolytic cell modules in water oxygen outlet, HTO collection system, oxygen dry system
System connection, rich HTO and oxygen two-phase mixture for SPE electrolytic cells module to be flowed out carry out gas-liquid separation, enter oxygen
Oxygen drying system, rich HTO enters HTO collection system；
The HTO collection system is connected with supply system containing HTO, dense by the rich HTO of Separate System of Water-jet outflow for detecting
Degree, collection reach concentration index containing HTO, and by concentration it is below standard containing HTO circulation input supply system containing HTO；
The hydrogen drying system for hydrogen is used to dry the poor hydrogen tritide gas flowed out by the hydrogen outlet in SPE electrolytic cell modules；It includes
It is connected with hydrogen outlet and in first molecular sieve drying bed (26) of parallel relationship and the second molecular sieve drying bed (30), if
Put in the first molecular sieve drying bed (26) for the first molecular sieve drying bed heater (25) heated to it, be arranged on
For the second molecular sieve drying bed heater (29) heated to it in second molecular sieve drying bed (30), while with first
With the second molecular sieve drying bed connection first gas compressor (34) and first gas heater (38), while with the first molecule
Sieve drying bed (26) and the second molecular sieve drying bed (30) connection, for activating when remove vapor in molecular sieve drying bed
First condenser (43), and the first gas circulating pump (44) being connected with the first condenser (43)；The first gas compression
Machine (34) is connected with hydrogen collection；
The oxygen drying system is used to dry the oxygen after gas-liquid separation, removes the vapor in oxygen, and to product oxygen
Collect storage tank and be input into qualified oxygen product；It includes being connected with Separate System of Water-jet and the type three-molecular screen alternating in parallel relationship is done
Dry bed (63) and the 4th molecular sieve drying bed (67), being arranged on type three-molecular screen alternating drying bed (63) is used for what it was heated
Type three-molecular screen alternating drying bed heater (62), is arranged in the 4th molecular sieve drying bed (67) be used to heat it second
Molecular sieve drying bed heater (66), at the same with the third and fourth molecular sieve drying second gas compressor (71) for being connected of bed and
Second gas heater (74), at the same with the third and fourth molecular sieve drying bed be connected, for activating when remove molecular sieve drying
Second condenser (79) of the vapor in bed, and the second gas circulating pump (80) being connected with the second condenser (79)；Institute
State second gas compressor (71) and collect storage tank (86) with product oxygen；
The poor hydrogen tritide gas that the hydrogen collection is used for after tritium concentration is detected carries out shunting treatment, tritium concentration is collected respectively and is reached
To index and the hydrogen for falling short of the target；
The product oxygen collects storage tank to be used to store dried oxygen；
The condenser system with the first condenser (43) including being connected, the first cooling-water machine (56) for being cooled down to it, with
Second condenser (79) connection, the second cooling-water machine (82) for being cooled down to it, and for condenser to be cooled down into gained
Containing HTO be input into HTO collection system the 3rd liquid phase quality flowmeter (59)；
The detection and control system and SPE electrolytic cells module, supply system containing HTO, HTO collection system, hydrogen desiccation system
System, oxygen drying system, hydrogen collection, product oxygen collect storage tank, condenser system connection, for detection and control system
Pressure, liquid level, humidity and tritium concentration, and carry out emergency power off treatment for electrolytic cell hydrogen leak accident.
2. a kind of SPE electrolysis systems for tritium concentration according to claim 1, it is characterised in that：The bipolar plates stream
Road include by the compound runner no less than five foldings from top to bottom successively bending connect and compose, for fluid flow wherein it is snakelike
Passage；The rear and front end for often rolling over compound runner is equipped with the Cylinder Group (101) of point-like matrix structure, also, multiple in every folding
It is equipped with the road of interflow and between the Cylinder Group of two ends and is distributed and compound runner is divided into N from top to bottom in staggeredly mode
It is equipped with for connecting phase between the parallel fluid channels ridge (102) of bar parallel fluid channels (103), 4≤N, and adjacent parallel fluid channels ridge
Adjacent two parallel fluid channels, the openings (104) to balance the Fluid pressure in compound runner and flow velocity；Meanwhile, described answers
From top to bottom, the bar number of its parallel fluid channels successively decreases successively according to the mode of equal difference in interflow road.
3. a kind of SPE electrolysis systems for tritium concentration according to claim 2, it is characterised in that the anode is bipolar
On plate runner, described entrance containing HTO is arranged on the end of the compound runner of the top in the bipolar plate runner；Described water
Oxygen outlet is arranged on the end of the compound runner of bottom in the bipolar plate runner；And on the cathode bipolar plate runner, it is described
Hydrogen outlet be arranged on bottom in the bipolar plate runner compound runner end.
4. a kind of SPE electrolysis systems for tritium concentration according to claim 3, it is characterised in that in anode bipolar plate
In runner and cathode bipolar plate runner, the bottom concurrent flow in other compound runners in addition to the compound runner of the folding of bottommost one
Road, its width is wider than other parallel fluid channels by 50%；Meanwhile, the width of all parallel fluid channels in the compound runner of bottommost is equal
It is identical with the bottom parallel fluid channels width in other compound runners.
5. a kind of SPE electrolysis systems for tritium concentration according to claim 4, it is characterised in that often roll over compound runner
In for make fluid turn to end be equipped with the rounded corner that smoothly transits (105).
6. a kind of SPE electrolysis systems for tritium concentration according to any one of Claims 1 to 5, it is characterised in that described
The pump discharge of supply system containing HTO includes the measuring pump (6) being connected with the entrance containing HTO on SPE electrolytic cells, delivery port and the meter
The pending storage tank containing HTO (4) of amount pump (6) pump intake connection, and pump discharge contains HTO storage tank (4) water inlet and is connected with this
Water-circulating pump (16)；The storage tank containing HTO (4) is connected with detection and control system；The pump intake of the water-circulating pump (16)
It is connected with HTO collection system.
7. a kind of SPE electrolysis systems for tritium concentration according to claim 6, it is characterised in that the HTO is collected
System is connected including water inlet with gas-liquid separator (11), for collecting the below standard cyclic water tank (15) containing HTO, Yi Jijin
The mouth of a river is connected with gas-liquid separator (11), product HTO storage tank (19) for collecting rich HTO；The cyclic water tank (15) goes out
The mouth of a river is connected with the pump intake of water-circulating pump (16), and cyclic water tank (15) and product HTO storage tank (19) with detection and control
System is connected.
8. a kind of SPE electrolysis systems for tritium concentration according to claim 7, it is characterised in that the Hydrogen collection
System includes the product hydrogen-holder of the hydrogen for collecting tritium level index being connected with first gas compressor (34)
(46) and for collecting the below standard hydrogen-holder (51) of below standard hydrogen；The product hydrogen-holder (46) and below standard hydrogen
Storage tank (51) is connected with detection and control system.
9. a kind of SPE electrolysis systems for tritium concentration according to claim 8, it is characterised in that the detection and control
System processed includes the first tank gage (5) being connected with pending storage tank containing HTO (4), the second liquid being connected with cyclic water tank (15)
Position instrument (14), the 3rd tank gage (20) being connected with product HTO storage tank (19), first be connected with product hydrogen-holder (46)
Pressure sensor (47), the second pressure sensor (52) being connected with below standard hydrogen-holder (51) is collected with product oxygen and stored up
3rd pressure sensor (87) of tank (86) connection, is connected to cathode of electrolytic tank bipolar plates hydrogen outlet and first, second molecule
The first dew point hygrometer (23) between sieve drying bed, is connected to first, second molecular sieve drying bed and first gas compressor (34)
Between connect the second dew point hygrometer (32), be connected to the 3rd dew point hygrometer (37) of first gas circulating pump (44) tail end, be connected to
The 4th dew point hygrometer (60) between gas-liquid separator (11) and the three, the 4th molecular sieve dryings bed, is connected to the three, the 4th molecules
The 5th dew point hygrometer (69) connected between sieve drying bed and second gas compressor (71), is connected to second gas circulating pump (80)
6th dew point hygrometer (73) of tail end, is connected, for the hydrogen alarm (9) of characterization processes operating environment with SPE electrolytic cell modules,
And for detecting magnetic mass spectrometer (12), the four-electrode spectrum for measuring hydrogen tritium level of rich HTO concentration after gas-liquid separator
Instrument (35) and for stopping the relay (8) to SPE electrolytic cell module for power supply in hydrogen leak.
10. the implementation method of a kind of SPE electrolysis systems for tritium concentration described in claim 9, it is characterised in that including with
Lower step：
(1) pressurize test and debugging are carried out to system, it is ensured that reach operation and require；
(2) pipeline and storage container are transported to hydrogen carries out vacuumize process, until vacuum reaches below 5Pa；
(3) it is enough pending containing HTO to being input into pending storage tank containing HTO；
(4) contain HTO to the anode bipolar plate input of SPE electrolytic cell modules, direct current is connected after membrane module obtains fully wetting
Source；
(5) the lower electrolysis on anode catalyst layer containing HTO of current potential effect is oxygen and proton, and oxygen returns to sun through anode diffusion layer
In the bipolar plate runner of pole bipolar plates, proton then passes through PEM, and hydrogen is reduced under cathode catalysis layer effect；And not
The oxygen that the water of electrolysis and electrolysis are produced then is exported from the water oxygen of the bipolar plate runner of anode bipolar plate and drawn, and is passed through gas-liquid point
Separated from device；
(6) oxygen after separating enters during product oxygen collects storage tank and stores after drying, and reach tritium enrichment index containing tritium
Water then enters product HTO storage tank, and below standard is incorporated into cyclic water tank containing HTO；
(7) gas containing hydrogen tritide being enriched with the bipolar plate runner on cathode bipolar plate is drawn in hydrogen outlet, then after drying, is reached
Hydrogen to tritium level index enters storage in product hydrogen storage tank, and below standard gas containing hydrogen tritide then enters into below standard hydrogen
Storage tank；
(8) when pending tank level containing HTO be less than 5cm when, by water-circulating pump by the HTO of not up to tritium concentration index with
And condenser system condensation containing HTO is input into pending storage tank containing HTO, or it is introduced from outside into containing HTO；
(9) circulation step (4)~(8).
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