flare recovery systems and the flare bullet economic approach to flare minimisation l.
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FLARE RECOVERY SYSTEMS AND THE “FLARE BULLET” Economic approach to flare minimisation . Jonathan MILES Argo Environmental Engineering Limited. The Environment. CO 2 from Power Generation and Fuel Gas CO 2 from Flaring VOC from tank emissions / transport. Environmental Emissions - UKOOA.

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flare recovery systems and the flare bullet economic approach to flare minimisation

FLARE RECOVERY SYSTEMS AND THE “FLARE BULLET”Economic approach to flare minimisation

Jonathan MILES

Argo Environmental Engineering Limited

the environment
The Environment
  • CO2 from Power Generation and Fuel Gas
  • CO2 from Flaring
  • VOC from tank emissions / transport
environmental emissions ukooa
Environmental Emissions - UKOOA

Flaring rose in UK in 2006 to 1.725 m tonnes

CO2 emissions in 2006 fell by about 1m tonnes

ukooa commitment 47
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
best in class
Best In Class?
  • Analysis 2000-2004 has shown:
    • Best in class produces 0.63 ave kg CO2/boe Worst in class – 38.61 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
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

How does reduced flaring save cost
flare gas recovery
Flare Gas Recovery

HP flare

To flare

Bursting Disc

LO

LO

HH

HH

PT

PT

FOV

N

supply

2

HH

FE

XV

Check valve

HP K.O.

Sources

Drum

Drain

fov layout
FOV Layout

To flare

Bursting disc

Tie

in 2

Manual valve

FOV

Tie

in 1

fast opening valve
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")
flare gas recovery economics
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
flare gas ignition
LP ignition system:

Automatic Pellet Launching cabinet and air launching bottle

Guide pipe

Pellet collector unit (optional)

Flare Gas Ignition
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

Flare Gas Ignition System
flare gas ignition20
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
conclusions and recommendations
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