A team led by Air Products has been presented with an award for work addressing impurity removal in carbon dioxide (CO2) waste streams from coal-fired power plants.

The team, which included Imperial College London and Doosan Babcock Energy Ltd, was presented with the Rushlight Carbon Capture and Storage Award 2008, by Professor Gordon MacKerron, of the University of Sussex.

CO2 purification is an essential requirement for the compression, transport and potential sequestration of greenhouse gas emissions from power plants; the Rushlight Awards promote and celebrate the leading environmental technologies and innovations by organisations throughout the UK and Ireland.

Air Products’ Marketing Manager for Tonnage Gases in Europe, Middle-East and Africa accepted the award on behalf of the team, he said, “[the award] is a true recognition that technology can play an important part in making carbon capture and storage a real option for reducing greenhouse gas emissions and is an important and practical approach to the issue of CO2 purification.”

He added, “It also rewards technology that demonstrates novel advancement and shows evidence of progress in energy efficiency.”
Air Products is currently working on a number of carbon capture and storage demonstration projects across the world.

The company’s oxyfuel technology can reduce the cost of capturing CO2 for the power industry; it (the company) has specifically focused on the purification of the resulting oxyfuel combustion flue gas, developing a robust process for the efficient removal of trace impurities.

Air Products’ proprietary sour compression technology uses a staged compression process to optimise pressure, hold-up and residence time, allowing removal of impurities during the compression process.

This technology can allow cost savings in the oxyfuel combustion process and minimises the content of these components in the sequestered CO2.

The oxyfuel sour compression technology has been demonstrated in experimental work carried out by Imperial College London with actual flue gas from a 160kW coal-fired rig at Doosan Babcock in Renfrew, Scotland, as part of the Oxycoal-UK project.

Air Products has also announced another CO2 capture study for gasification, in collaboration with the Alberta Energy Research Institute, the study, due to be completed by October 2010, focuses on advanced carbon dioxide capture technology for use with gasification.