Demonstration Plant for Distributed Production of Hydrogen from ...
A New Hydrogen Processing Demonstration System...A New Hydrogen Processing Demonstration System...
Transcript of A New Hydrogen Processing Demonstration System...A New Hydrogen Processing Demonstration System...
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A New Hydrogen Processing Demonstration System
James (Jim) KleinAnita PooreXin (Steve) XiaoDave Babineau
35th Tritium Focus Group (TFG) Meeting Princeton Plasma Physics Laboratory (PPPL), Princeton, NJMay 5-6, 2015
SRNL‐L2100‐2015‐00033
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Overview: Compare and Contrast Tritium Process Systems
Background• D (Deuterium) – Discovered in 1931• T (Tritium) – Discovered in 1934• Various uses for tritium• D-T Fusion Reaction
– D + T = He + n + 17.59 MeV
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Beginning Research
US Cold War Defense Programs • D + T = He + n + 17.59 MeV• 1940’s during WWII
– US Manhattan Project• US Nuclear Deterrent
Fusion Energy• D + T = He + n + 17.59 MeV• 1950’s
– US Atoms for Peace• Electric Power Generation
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Tritium Process
Tritium Supply
Tritium Evacuation
Tritium Clean‐up(impurityremoval)
ProcessInputs
Tritium Storage
Tritium Isotope
SeparationDetritiationProcessing
Emissions
Confinement
Tritium Fuel Cycle: Similar for All Uses
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Tritium Process
Tritium Supply
Tritium Evacuation
Tritium Clean‐up(impurityremoval)
ProcessInputs
Tritium Storage
Tritium Isotope
SeparationDetritiationProcessing
Emissions
Confinement
Compare and Contrast Tritium Process Systems/Fuel Cycles
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Tritium Fuel Cycle: Similar for All Uses
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Tritium Process
Tritium Supply
Tritium Evacuation
Tritium Clean‐up(impurityremoval)
ProcessInputs
Tritium Storage
Tritium Isotope
SeparationDetritiationProcessing
Emissions
Confinement
Tritium Fuel Cycle: Tritium Process
• Defense Programs– Components
The Illusion“Once the Tritium Process has been defined, all that is left to debate is what processes and equipment to use for the rest of the facility. Let’s focus funding on plasma science and materials development.”
• EXIT Signs– Glass Tubes
• ITER – Tokamak
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Cold War Defense Programs • Produced Material• Department of Energy Nuclear
Weapons Complex• 1950’s: Savannah River Plant
Fusion Energy
• Waste Product from CANDU Electricity Generation
• Tritium Removed from Heavy Water• Chalk River Lab Distribution
Tritium Supply
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Cold War Defense Programs • Far from Large Population
Centers• Large Land Areas
– Public far from Site Boundary– On-Site Waste Disposal
Fusion Energy• Research Based at
Universities/Technology Centers• Typically More Urban
– Close to Public• Waste Shipped Off-Site• Low Allowable Emissions
Tritium Facility Siting and Emissions
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Tritium Process Inventory
Cold War Defense Programs • “Large” Inventories to Meet
Stockpile Demands– Asset: Flexibility; Ready Supply
• Process Design Focus– Production; not Minimum Inventory
Fusion Energy• “Low” Inventories to Meet Safety
Basis Requirement• Minimum to Meet Process Needs• More Tritium, More Cost!• More Tritium, More Risks!
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Cold War Defense Programs • Component Filling
– Inherently Batch Process• “Baseline” Process Flow Rates
Fusion Energy (ITER)• Continuous During Test Reduces
Inventory Needed• Much Higher Process Flow Rates
Tritium Processing: Batch Versus Continuous
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Cold War Defense Programs • Typically Commercially Available
Equipment– Vacuum Pumps– Compressors
• Metal Hydride Technology
Fusion Energy (ITER)• Large Pumping Speeds• Continuous Duty Cycle• Custom Pump Development• Multiple, Sequenced Pumps
Discussion: Tritium Evacuation
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Discussion: Tritium Clean-Up/Gas Processing
Cold War Defense Programs
• Main Separation: Pd/Ag “Diffuser (Permeator) System
• Eventually, Catalytic Oxidation and Absorption
• Water “Cracking” Via Hot Metal
Fusion Energy (ITER)
• Main Separation: Pd/Ag Permeator (Diffuser) System
• Eventually, Catalytic Oxidation and Absorption
• Water Detritiation Process
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Discussion: Tritium Isotope Separation
Cold War Defense Programs
• Various Methods Used– Thermal Diffusion Columns– Batch Cryogenic Distillation
• Thermal Cycling Absorption Process (TCAP)
Fusion Energy (ITER)
• Cryogenic Distillation – Continuous Process– Four Column Design
(Not ITER Separation System)
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Discussion: Tritium Storage
Cold War Defense Programs
• Old Processes– Sub-atmospheric Tanks
• New Processes– Metal Hydride Storage Beds– Large Capacity Beds: > 300 gram
Fusion Energy (ITER)
• Metal Hydride Storage Beds– DU (depleted Uranium)– 70 g Limit
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Discussion: Tritium Supply
Cold War Defense Programs
• Pumps, Compressors, Metal Hydride Beds
• Compress Mixtures
Fusion Energy (ITER)
• Cryogenic Pellet Injectors– High Feed Rates– Inject D and T Separately
(JET Pellet Injector)
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Discussion: Rate-Inventory Matrix
Low Inventory Systems
High Inventory Systems
High Processing Rates
Fusion Research Tritium Systems
Low Processing Rates
US Cold War Tritium Systems
• Relative System Inventories and Tritium Processing Rates
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Discussion: Rate-Inventory Matrix
Low Inventory Systems
High Inventory Systems
High Processing Rates
Fusion Research Tritium Systems
Low Processing Rates
US Cold War Tritium Systems
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• Improvements to Cold War Processing Systems- Is Lower Inventory, Faster Systems the Right Path?
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Discussion: Rate-Inventory Matrix
Low Inventory Systems
High Inventory Systems
High Processing Rates
Fusion Research Tritium Systems
Low Processing Rates
Cold War Tritium Systems
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• All Processes Benefit from Lower Process Inventories- Less Public Dose from Accident Scenarios
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Discussion: Rate-Inventory Matrix
Low Inventory Systems
High Inventory Systems
High Processing Rates
Fusion Research Tritium Systems
Low Processing Rates
Cold War Tritium Systems
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2 ‐as needed
• Not All Processes Need Fast Processing Rates- “Right-Size” Processes Based on Need
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Conclusions: Part 1
Tritium Process Technology Development• Initiated as Part of US Nuclear Weapons Defense ProgramsAll Tritium Processes Contain Similar Processing Operations• Fusion Research Needs Exceed Existing Technology Base• New Processes and Technologies Under DevelopmentUS Cold War Era Facility Design Basis Outdated• Revised Processed to be Developed for Reduced Inventories
– Improved Safety to the Public• Need for Faster Processes: “Right-Size” Processes• Still Need Technology Development for Tritium Processes
– Tritium Releases to the Public Dominate System Designs– Yes: Continue Plasma Science and Materials Research Too!
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Part 2: Overview
• Hydrogen Processing Demonstration System (HPDS)• Enabling Activities/Tasks
– Revised Unloading Purification System (RUPS – this talk)– Optimized, Advanced Storage and Isotope Separation (OASIS – this talk)– Reduced Area Confinement and WAter Processing (RACWAP - not discussed)
• Anita promises to make me change the acronym!– Advanced HT Isotope Separations (not discussed)
• Plans– HPDS Cold Test Concept and Plans
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Tritium Processing at SRS: The Largest Metal Hydride Based Tritium Facility in the World
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H Area New Manufacturing – Tritiated Waste Gas Processing
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Reservoirs Unloading
MH Primary Separator Diffusers
Pumps
Vacuum Pumps
He‐3RUPS Boundary
Compressor
Cryosorption
Gas CylinderQ2 (Q=H,D,T)
Pd/k
AA BB
3 ft
Cooling nitrogen
FeedGas
ExhaustGas
Coolingnitrogen
Uses Hot and Cold Nitrogen
Uses Electric Heatersand Liquid Nitrogen
RUPS Boundary
Revised/Reservoir Unloading Purification System (RUPS)
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Previous Development Path: Piece‐wise Component Replacement• Replace existing unit operation with equivalent replacement
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Reservoirs Unloading
He‐3
Gas CylinderQ2 (Q=H,D,T)
New RUPS Process
RUPS Boundary
Reservoirs Unloading
MH Primary Separator Diffusers
Pumps
Vacuum Pumps
He‐3RUPS Boundary
Compressor
Cryosorption
Gas CylinderQ2 (Q=H,D,T)
RUPS Boundary
Revised/Reservoir Unloading Purification System (RUPS)
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New Development Path: New Requirements, Improved Processes• Replace system, not just components: “Right‐Size” System
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Storage and Isotope Separations
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MH T2 & D2Storage
MH Feed Bed
MH T2Storage
MH D2Storage
MH TCAPIsotope
Separation
Gloveboxes
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Storage and Isotope Separations: Current Hydride Storage Beds
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Three Generations of Metal Hydride Storage Beds
Previous Development Pathway• Stay with existing hydride storage material
(e.g. LaNi4.25Al0.75 or “LANA0.75”)• Develop Improved hydride beds• Rev. 0: Used Hot and Cold Nitrogen System• Rev. 1: Forced‐Atmosphere Cooling, Electric
Heaters (PACE/FACE Beds)• Rev. 2: More Efficient PACE Bed
• Four Inch Short Hydride (FISH) Bed• Some Beds Still Rely on LANA Alloys
• Retain He‐3• P‐C‐T Altered by Retained He‐3
1
10
100
1,000
10,000
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7T/M
Initial Properties
Aged Properties
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Storage and Isotope Separations: Current Isotope Separations
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Previous Development Pathway• Stay with known metal hydride
• Pd on kieselguhr (Pd/k)• Stay with Current Process
• Inert, Passive Plug‐Flow Reverser to Preserve Concentration Profile
• Close‐Couple Column with Heating and Cooling Systems to Reduce Cycle Times
• Use Internal Heat Transfer Foam to Improve Thermal Cycling Response
Two Generations of Isotope Separation Columns
FeedT2+H2
ProductT2
RaffinateH2
Pd/kcolumn with hot/cold jacket
Plugflowreverser (passive)
FeedT2+H2
ProductT2
RaffinateH2
Pd/kcolumn with hot/cold jacket
Plugflowreverser (passive)
FeedT2+H2
ProductT2
RaffinateH2
Pd/kcolumn with hot/cold jacket
Plugflowreverser (passive)
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Mix Tanks
MH T2 & D2Storage
MH Feed Bed
MH T2Storage
MH D2Storage
MH TCAPIsotope
Separation
Gloveboxes
Optimized, Advanced Storage and Isotope Separation (OASIS): New Boundary
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Gloveboxes
RUPS Q2 (Q=H,D,T)
Include Mix TanksIn Scope of System Redesign
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Mix Tanks
Gloveboxes
Optimized, Advanced Storage and Isotope Separation (OASIS)
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Gloveboxes
RUPS Q2 (Q=H,D,T)
Include Mix TanksIn Scope of System Redesign
T.B.D.Storage
T.B.D.Feed
T.B.D.Storage
AdvancedTCAP
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OASIS Tritium Storage and Pumping: New Focus
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New Development Pathway• Expand role of other metal hydride storage
materials (e.g. Depleted Uranium: DU)• New Storage Bed Concepts
• Storage and Separations• Evaluate Merit of Pumps vs Hydride Beds
• Gas Transfers• Gas Supplies• Gas Compression
• Evaluate System with Mixed Hydride Storage Beds
• DU for Storage?• LANA Beds for Supplying/Compressing?
• Incorporate He‐3 into Bed Design
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OASIS Advanced TCAP Process: New Focus
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New Development Pathway• Eliminate Use of Hot and Cold Nitrogen
• Liquid Nitrogen Cooling• Electric Heaters
• Advanced Column Designs• Business Proprietary
• Develop Active (Inverse Separation) Column• Molecular Sieve Selected
• Advanced Process Control Logic• Close Integration with Feed and Discharge
Systems
Possible Development Pathway• Re‐examine Cryogenic Distillation
FeedT2+H2
ProductT2
RaffinateH2
Pd/kColumn with thermal cyling
MS column with thermal cycling (active)
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Tritium Confinement at SRS
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Glovebox T2Stripping System
Gloveboxes
Catalyst Bed Zeolite Bed Mg BedGloveboxesTo Isotope Separation
Current Confinement• Large gloveboxes with many thousands of gloves
• Large glass panels• Many gloves per panel• Recirculating strippers with purge
Current Water Processing• All water entering or created in glovebox is processed
• Large amounts of protiated water• Use of Hot Magnesium Beds for Water Reduction
• Expensive, consumable waste vesselsNew Development Pathway: Topic of Future Presentations• Reduced Area Confinement and Water Processing (RACWAP)
System• Includes Advanced H‐T Separation Capacity TCAP Systems
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Hydrogen Processing Demonstration System (HPDS)
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Construct Cold (e.g. non‐rad) Hydrogen Processing Demonstration System• Develop Components for Tritium Processing• Test Integrated Processing Sub‐Systems• Develop and Deploy Analytical Measurement Systems
• Integrate measurements into component or system designs• Training Facility for New Employees• “Cold” Operator Training for New Tritium Processes• Component Evaluation Before Process Installation• Institutional Knowledge Transfer
• Program Based• Not Succession Plan of Individuals
• Based on Success of Test Facility for Current Tritium Process• “Advanced Hydride Laboratory” (AHL)
• Support Development of “Short Course” on Tritium Technology• Training Class for Fusion Researchers
• Work‐For‐Others (WFOs) Test Capabilities• Conduct cold testing for outside users??
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HPDS provides a FRAMEWORK for increasing MRL by integrating unit operations
HPDSInfrastructure
HPDS provides a space where technologies can be inserted for integrated and/or stand alone testing. Proof of concept or prototype units are tested prior to insertion into a production operation.
Balance of Plant UtilitiesPumping CapabilitiesProcess Controls/Monitoring
Safety Envelope (environmental/waste)Supply gases
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Hydrogen Processing Demonstration System (HPDS)
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New RUPS ProcessReservoirs
Unloading
Mix Tanks
He‐3Gloveboxes?
CompressorGas Cylinder
Mix Tanks
T.B.D.Storage
T.B.D.Feed
T.B.D.Storage
AdvancedTCAP
• Early In Planning Stages• New Process Design Bases Under Development• Flowsheet/Technology Selection in 2015• Process Design and Technology Testing Starting in 2016
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Conclusions
• Synergy Exists Between the Needs for the Use of Tritium- Improved Systems Benefit Everyone to Create Safer Systems
• “Right-Sizing” Requires System Replacement (not just components)
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Summaries Due: October 16, 2015Author Notification: December 11, 2015Full Papers Due: April 12, 2016Final Papers Due: August 2016
Technical Program Chair:Dr. James E. Klein Savannah River National Laboratory, USA
http://tritium2016.org
Authors should submit 300 word (min.) summaries in English via the conference website http://epsr.ans.org/meeting/?m=213). The summary should clearly state objectives, methods, results and conclusions of the work. MS Word format (use template).
General Chair:Dr. Robert P. Addis Savannah River National Laboratory, USA