The Hydrogen challenge:injection into Snam network, process and fuel H2 Natural Gas mixtures

Snam Technical Dept. – Baker Hughes Annual meeting, Florence, February 2-4, 2020

Snam: an Italian and European leader in gas infrastructure

2

TRANSPORT

• 32.625 km gas pipelines total

length

• 13 compressor stations

(961 MW installed power)

Integrated operations in Italy

STORAGE

• 9 storages (compressor

stations and treatment

plants)

• 16.9 billion m3 storage

capacity (total , strategic

storage included)

LNG

• 1 (*) regasification

terminal

• 17,500 m3 - LNG

maximum daily

regasification capacity

(*) 100% ownership of Panigaglia,

49,07% of OLT and 7,3% of Adriatic

LNG

European presence through 7 International associates

Framework

3

H2NG mixture combustion emits less CO2 than natural gas one

H2 produced through electrolysis allows the energy storage\transport

coming from overproduction of renewable sources

Storage\transport energy from renewable sources

in Snam network Emission reduction

DecarbonisationContribution of hydrogen injection into gas network

Goal

Snam is experimenting impacts and advantages of the injection of H2 into its gas network, moving in ENERGY TRANSITION towards CARBON REDUCTION and final DECARBONISATION

3Compressor

station gas

turbines

3Compressor

station gas

turbines

• Collaboration with gas

turbine suppliers of Snamindustrial clients

• Collaboration with Snam gas

turbine suppliers

End Users with

production

processes sensitive

to gas quality

4End Users with

production

processes sensitive

to gas quality

4

Pipeline

2nd test Pipeline

1st test

• Mixture of H2NG (H2 – 5%

volume)

• End Users:• Pasta Factory• Water Bottling

Snam approach

4

• Mixture of H2NG (H2 – 10 % volume)

• End Users:• Pasta Factory• Water Bottling

In progressCompleted

April 2nd, 2019

Pipeline

1st test

December 16th, 2019

Pipeline

2nd test

21

Test 2019: features and constraints

5

Gas turbines of compressor stations

CNG distributors

End Users with production processes

sensitive to gas quality

Underground storage in porous

rocks

CONSTRAINTS:

Mixture features (Natural gas up to 10% H2)

• Quality characteristics set by the Ministerial Decree

18 May 2018 for the natural gas transport: respected;

• Materials HE (Hydrogen Embrittlement): checked;

• ATmosphères ed Explosives zones identification:

checked.

Public bodies Involved

National and Local Fire Departments

GoalInjection into a portion of the network of a mixture of H2NG up to 10 % of volume to check compatibility of current infrastructure to transport H2NG mixtures.

Test 2019: location and End Users’ features H2NG 5% - 10% H2

Reduction cabin n° 818 Contursi (SA)

H2NG

75 bar 5 bar

L ≈ 700m

R.C. 818End User 1

Pasta Factory

End User 2Mineral Water Bottling

Plant

• Snam pressure reduction plant with pre-

heating gas boilers.

Snam plant & Infrastructure

• NO CNG refueling stations supplied

• NO compression stations and storages connected

• Absence of redelivery points interconnected

with City Gates and reduction plant located in an

urbanized area

• Limited gas withdrawal over 3-4 weeks (4 Cylinder

Trailers) – 5% H2

• Industrial end customers with non-critical

production processes (Pasta Factory & Mineral

Water Bottling Plant)

End Users

• Limited gas withdrawal by using 16 Cylinder

Packs – 10% H2

H2NG mixture supplied in CYLINDER TRAILERS (5% H2) CYLINDER PACKS (10% H2)

2019 Tests: mixture H2NG 5% H2 & 10 % H2

Cylinders Packs [cylinders filled with compressed gas, nominal pressure 196 bar (3800 Sm3)]

Road going semi-trailer [cylinders filled with compressed gas, nominal pressure 196 bar (5000 Sm3)]

2019 Tests: results – Snam plant\ End Users

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• Regular working of Snam Reduction plant (piping and instrumentation)

• Regular working pre-heating section (gas boilers)

10% at a time Snam is testing positively End User readiness to H2NG mixtures

• Collaboration with gas turbine suppliers

• Definition of the maximum H2 limit that can be mixed

• Full scale factory\field tests.H2NG fuel H2 up to 5% in volume, variable.

3Compressor

station gas

turbines

3Compressor

station gas

turbines

End Users with

production

processes sensitive

to gas quality

4End Users with

production

processes sensitive

to gas quality

4

• Collaboration with gas turbine suppliers of Snamindustrial clients

• Definition of the minimum H2

limit that can be mixed

• Full scale factory test

Snam next steps

82020 Next Steps

ID Fhase FUEL1 Start Natural Gas (NG)2 Warm up NG3 Operation NG4 Full load NG5 Full load NG + 3% H26 Full load NG + 5% H27 Partial load (75%) NG8 Partial load (75%) NG + 3% H29 Partial load (75%) NG + 4% H2

10 Partial load (50%) NG11 Partial load (50%) NG+ 3% H212 Partial load (50%) NG + 4% H213 Partial load (50%) NG14 Stop NG

Pipeline

1° test

Conclusion

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Pipeline

1Pipeline

2nd test

Pipeline

1st test

Pipeline

1st test

Pipeline

2nd test

Green Hydrogen Fusilli

1. Extra virgin olive oil in a pan, two or three Anchovie’s fillets and garlic;

2. Add steamed Broccoli;

3. Cook your Hydrogen Fusilli, drain pasta “ al dente” and stir fry all.

Enjoy your meal and «Buon appetito»!