Pressurised Oxyfuel

TriGen reduces CO₂ emissions while producing clean power and water

• TriGen designs, constructs, operates and completes clean dispatchable power projects, including the commercial arrangements, integrating Power and O&G knowhow. Dispatchable power is power that can vary with demand.
• Dispatchable power is needed to complement and enable intermittent, weather dependent Renewable Power (e.g. power that is not available when the sun does not shine or when there is not enough wind)
• TriGen organizes all stakeholders: asset holders, suppliers of fuel and technology, customers of clean power and fresh water, financiers, and operators storing CO₂
• TriGen helps Oil Companies (NOCs, IOCs and Independents) reduce CO₂ emissions because CO₂ will be captured and stored
• TriGen uses pressurised rather than atmospheric oxyfuel combustion technology, aiming for higher efficiencies and compact power plants.
• Importantly, TriGen plants produce rather than consume fresh water
• The TriGen system also produces nitrogen and argon, as byproducts of the Air Separation Units required to produce the oxygen for oxyfuel combustion.

The oxyfuel process requires pure oxygen produced by an Air Separation Unit. This makes the process more expensive than conventional power plants. However, the system creates (tangible) compensating value in other areas. For example, lower quality fuels can be used, CO₂ can be directly injected, clean power and chemical water can be produced. Every project faces different challenges and generates value from different sources. TriGen, with its customers, identifies the highest value decarbonisation option and delivers the engineered solution. Typically, projects involve mature, producing assets and yield returns of over 15%.

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Oxyfuel is one of three carbon capture pathways that enable CCUS. The two other CCUS technologies are pre-combustion CCUS (gasification, often hydrogen related) and post-combustion (e.g. using liquid amines). Both of these processes are quite complex and expensive, but for different reasons.