Flue gas recirculation
Flue gas recirculation recycles exhaust from steam generators used in the steam-assisted gravity drainage (SAGD) process, just like exhaust is recycled in our cars. The technology reduces the amount of nitrogen oxides emitted into the air during the combustion of fuel and gas.
In the oil sands we use natural gas in our steam generators. By using a tube to take exhaust from the steam generator, we can recycle the exhaust back into the burner. The exhaust helps cool the burner flame, reducing emissions going into the air.
Results show our emissions from the boiler are down to 20 parts per million (ppm) from 40 ppm - a 50 percent reduction. We've successfully incorporated this technology into Christina Lake phase F and we plan to incorporate this technology in future facilities.