UE 10 - Guest lecture: Carbon Capture, Transport and Storage Flashcards
1
Q
Name and explain the CO2 capture methods.
A
CO2 capture methods
Post-combustion (+ acid gas removal)
- Fuel + Air
- Combustion
- Flue gas
- CO2 capture
- Clean flue gas + CO2
Oxy-fuel-combustion
- O2 + fuel
- Combustion
- CO2
Pre-combustion
- Fuel
- CO2 capture
- H2 + CO2
- Combustion
- Air –> Combustion + Clean flue gas
2
Q
What is missing?
Transportation modes
“…”
- Phase: Liquid
- Distance: Short (< 100 km)
- Quantity: Small
- Advantage: Flexible on land
“…”
- Phase: Liquid
- Distance: Short to long
- Quantity: Small
- Advantage: Flexibility
“…”
- Phase: Liquid
- Distance: Medium
- Quantity: Medium
- Advantage: Cost effective from point to point
“…”
- Phase: Supercritical (gaseous and liquid)
- Distance: Short to long
- Quantity: Large
- Advantage: Cost effective for scale up, continuous flow
“…”
- Phase: Liquid
- Long (> 200 km)
- Quantity: Large
- Advantage: Flexibility and cost effective for overseas
A
“Tank truck”
“ISO container”
“Rail”
“Pipeline”
“Ship”
3
Q
True or false?
- CO2 pipelines in operation since the 1970s
- There are currently 50 CO2 pipelines operating in the US through over 8,000 km which transport approximately 70 Mtpa of CO2 every year (GCCSI).
A
True!
4
Q
What types of CO2 underground storages are there?
A
- Aquifers
- Depleted gas and oil reservoirs
5
Q
True or false?
- CO2 is injected into underground storages in its supercritical state.
- Over time, natural trapping processes immobilize the CO2: first by trapping it in pore spaces, then dissolving it in brine and finally turning it into solid minerals-
- This makes the storage increasingly secure over time.
A
True!
