1. Jonathan MILES Argo Environmental Engineering Limited
FLARE RECOVERY SYSTEMS AND THE “FLARE BULLET” Economic approach to flare minimisation
Jonathan MILES
Argo Environmental Engineering Limited

2. CO2 from Power Generation and Fuel Gas CO2 from Flaring
The Environment
CO2 from Power Generation and Fuel Gas
CO2 from Flaring
VOC from tank emissions / transport

3. Environmental Emissions - UKOOA
Flaring rose in UK in 2006 to m tonnes
CO2 emissions in 2006 fell by about 1m tonnes

4. Started Emission Trading Scheme
UKOOA Commitment 47
UK Flaring in 2001 represented about 30% of Industry CO2 emissions (5.5 m tonnes)
Started Emission Trading Scheme
Participants agreed target 10% emission reduction below consent agreements

5. 7 of top 10 performers were BP operated
Best In Class?
Analysis has shown:
Best in class produces 0.63 ave kg CO2/boe Worst in class – ave kg
Of worst 10 performers in flaring only 3 had stranded gas reservoirs with 7 connected to gas gathering systems
Foinhaven has stranded gas reservoir but achieves in top 10 CO2 from Flare / boe
7 of top 10 performers were BP operated

6. How does reduced flaring save cost
The “Death Zone” on a flare – Turndown to 1-2%
Flare and associated equipment damage
Wasted Gas – especially if fuel gas deficient – burning diesel
CO2 or trading or tax regime.
Reputation
Potential revenue/cost saving of $1million per year

7. What is zero flaring

8. HP flare Flare Gas Recovery Bursting Disc To flare LO LO PT PT FOV NHH HH PT PT
FOV N
supply 2 FE HH XV
Check valve
Sources
HP K.O.
Drum
Drain

9. FOV Layout
To flare
Bursting disc
Tie
in 2
Manual valve
FOV
Tie
in 1

10. Fast Opening Valve
Mokveld valve has SIL-level 3 (MTBF=2160 years of operation to "full stroke")
Tyco valve has SIL-level 3 (MTBF=523 years of operation to "full stroke")

11. Flare Opening Assemblies Rupture disc/Buckling pin valve
Bursting disc

12. Flare Gas Recovery – economics
Annual value assuming:
Quota trading
Increased gas export
2 flare change outs
Annual revenue from flare gas recovery $1,000,000
Typical Installed Cost - $2-4 million (cheaper on new facilities)
Pay back time will typically be 2-4 years

13. Low Pressure System

14. Flare Gas Ignition
LP ignition system:
Automatic Pellet Launching cabinet and air launching bottle
Guide pipe
Pellet collector unit (optional)

15. LP system typical installation

16. Flare Gas Ignition System
Long-range ignition pellet
Armed by the launching pressure
Ignite when emerged from guide pipe
Independent of emerging velocity
Will not ignite if exposed to fire

18. Low pressure Ignition System Ekulama II - SPDC Nigeria

19. Low pressure Ignition System Ekulama II - SPDC Nigeria

20. No moveable parts or electronic equipment located near flare tip
Flare Gas Ignition
No moveable parts or electronic equipment located near flare tip
When required maintenance is performed at cabinet
All equipment in heat radiation areas are heat in resistant material
High reliability and long lifetime

21. Conclusions and Recommendations
Install FGR if technically feasible
Increased revenue typically $1million
Cost to install $2 – 4 million
Install Pellet Ignition system – suit all systems
Increased reliability of ignition
Increased safety
Reduced maintenance cost
Cost approx $150,000