A network which aims to provide an international forum for organisations with an interest in the development of Oxyfuel Combustion Technology.
Background
The enormous investment in R,D&D over the past 10 years has born its fruit and made a significant contribution to the maturity of the oxyfuel combustion technology for power plants with CO2 capture. Work has been done in all aspects of operation which include the fuel preparation, air separation unit, oxyfuel burners and boiler, flue gas processing, and CO2 processing unit. One of the key messages that has become evident from the different stakeholders attending our newtork meetings and OCC conferences is that this technology is ready for demonstration. How to achieve the goal to build an oxyfuel combustion power plant with CO2 capture and storage is an important priority in the next 5 years. Failure to achieve this goal means losing the progress made during the last decade.
Today, the Callide Power Station retrofitted with oxyfuel combustion technology and equipped with two trains of ASU and one of CPU processing a part of the flue gas and capturing about 20% of the total CO2 emitted from this plant, is now the largest operating oxyfuel power plant in the world. This could be classified as mini-demonstration plant rather than a large scale pilot plant. We are continuously learning from this project and a message from this technology demonstration is that oxyfuel combustion can be retrofitted. Operating Callide Oxyfuel Power Plant reliably and achieving a cumulative 10,000 operating hours by November 2014 will be its biggest achievement and contribution to the development of this technology. OCC4 will give a platform for CS Energy to share their operational experiences.
Total’s Lacq project is unique in such a way that a natural gas boiler has been successfully retrofitted with oxyfuel combustion. The operation of the Lacq boiler, from July 2009 to March 2013, providing steam to the natural gas processing plant was also able to cumulatively capture and transport >50K tonne of CO2 and inject it at the Rousse depleted gas reservoir. One of the key achievements of this project is demonstrating that dried CO2 with 5-7% O2 and small amount NOx (<0.1%) could be transported using carbon steel pipe and injected into a depleted gas reservoir without any cause for concern. Post-injection monitoring at Rousse storage is now on-going. This provides an opportunity to learn and develop storage guideline methodology for oxyfuel combustion technology.
Another important milestone in the development of oxyfuel combustion is CIUDEN’s 30MWth oxy-CFB test facility. This is the largest operating oxy-CFB boiler worldwide and has contributed significantly to the design validation and optimisation of the first generation CFB boiler for demonstration and development of next generation boilers. Work is on-going with an aim to develop collaborative programme for long term reliability testing and evaluation of other fuels including biomass and petcoke.
Network contacts
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