Sulphur Dioxide
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Waste sulphur and ammonia captured from the upgrading operation are used as feedstock to produce ammonium sulphate fertilizer at an on-site third party facility.

Sulphur Dioxide (SO₂)

In 2013, we started operations of a $1.6 billion emissions reduction facility

Emissions of sulphur dioxide (SO2) originate mainly from three fluid cokers and are managed through both dry and wet scrubbing technologies.

Other sources of SO2 include flaring and diverter stacks.When it is necessary to flare or divert gas, we take every possible action to reduce the duration of each incident. We will also decrease the amount of bitumen feed into the coker in order to minimize emissions.

Sulphur Dioxide Emissions (2008 - 2012)

Our $1.6 billion Emissions Reduction Project, on-line in 2013, will significantly decrease SO2 emissions going forward.

Flue-gas desulphurization

A flue-gas desulphurization (FGD) unit captures and converts SO2 emissions into an ammonium sulphate.

The ammonium sulphate is then used to produce fertilizer at an on-site third-party facility. Flue-gas desulphurization technologies are in use worldwide to control air pollution from coal plants, refineries, smelters and pulp and paper mills. The unit uses a wet process to remove SO2 and, as a result, a high amount of water vapour travels through the stack. SO2 recovery is around 96 percent. Unrecovered pollutants, such as ammonia, are emitted in trace amounts through the vapour. In response to stakeholder concerns regarding the visibility of the plume, investigations are underway to assess the options for the best technological or process solution to improve the unit’s performance and increase emissions recovery even further.