University of Minnesota Wind to Ammonia Pilot Plant Presented by: - - PowerPoint PPT Presentation

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Aug 07, 2023 341 likes •462 views

University of Minnesota Wind to Ammonia Pilot Plant Presented by: Presented at: Michael Reese, Director - Renewable Energy Program REFUEL Kickoff Meeting West Central Research and Outreach Center August 17, 2017 Morris, Minnesota Denver,

SLIDE 1

University of Minnesota Wind to Ammonia Pilot Plant

Presented by: Michael Reese, Director - Renewable Energy Program West Central Research and Outreach Center Morris, Minnesota Presented at: REFUEL Kickoff Meeting August 17, 2017 Denver, Colorado

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University of Minnesota West Central Research and Outreach Center

NH3 Pilot Plant 1.65 MW Vestas V82 Wind Turbine 101 kW solar PV

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Renewable Hydrogen and Ammonia Pilot Plant

Hydrogen Storage Tanks Nitrogen Storage Tank Hydrogen, Nitrogen, and Ammonia Production Buildings 12.5 kV to 480 V Transformer Ammonia Product Storage (3000 Gallons) Safety Equipment & Shower Building Ammonia Pump and Loadout

SLIDE 4

Ammonia (NH3) Process Flow

Compressor

N2 H2 NH3 to Storage

250 psi

15°F

7.35 lb/h

Shell & Tube Heat Exchangers

S-1

930°F 820°F 180°F Electric Heater

15°F

1500 psi Chiller Condenser Separator

NH3 Reactor

Incoming gas Process gasses are heated Process gasses & NH3 are cooled Recycle gas (N2 & H2) 50°F 2000 psi 800°F

5°F

1500 psi Gas (N2 & H2) Gas (N2 ,H2 & NH3)

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Ammonia Reactor Skid

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Safety

Suggestions / Insights:

HAZOP review of designs and equipment
Hydrogen and ammonia safety training for staff (annual)
Set and follow Standard Operating Procedures (review and update as

needed)

Safety meetings prior to startup, service, repair, etc. (e.g. catalyst)
Inspect and maintain safety equipment
Calibrate, inspect, and maintain sensors and alarms
Replace equipment, piping, tanks, etc.
Meet with local fire and emergency responders
Review all incidents (no matter how small)
There will be leaks and multiple detection methods will be necessary
Do not become complacent and make safety a high priority each day!

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Troubleshooting

Lessons Learned: 1. Viton does not work under high temperatures and pressures with mixed hydrogen, nitrogen, and anhydrous ammonia 2. Buna works for solenoid and flow control valves 3. Neoprene works for use as

-ring material

SLIDE 8

Troubleshooting

Lessons Learn: 4. High temp sealants did not work

n reactor plugs – plugs needed to

be welded and re-stamped 5. Poly-carbonate glass can not be used

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Troubleshooting

6. Ammonia is corrosive and hard on compressors Lessons Learn: 7. Other issues – Flow meter and sensor accuracy under extreme conditions 8. We continue to learn more each day and welcome questions!

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Contact Information: Michael Reese, Director- Renewable Energy West Central Research & Outreach Center Phone: (320) 589-1711 Web: http://renewables.morris.umn.edu reesem@umn.edu University of Minnesota Collaborators: Alon McCormick, Professor* Ed Cussler, Professor* Joel Tallaksen, Scientist, WCROC Eric Buchanan, Scientist, WCROC Cory Marquart, Assistant Scientist, WCROC *Dept. of Chemical Engineering and Material Science Past funding provided by:

MN Corn Research & Promotion Council
U of MN IREE
U of MN MnDRIVE
MN Environment and Natural Resources Trust Fund
State of Minnesota