DNV GL approves Shell carbon capture technology

DNV GL has approved as qualified, technology for a full-scale demonstration project to remove carbon emissions at a waste-to-energy plant in Oslo, Norway.

Gassnova, the Norwegian state agency for carbon capture and storage projects, is supporting the project, which tested Shell’s CANSOLV CO2 carbon capture technology at Fortum Oslo Varme’s Waste-to-Energy plant at Klemetsrud in Oslo.

This project will contribute towards Norway’s target to reduce emissions with at least 50 %, and towards 55 per cent by 2030 compared to 1990 levels.

The Fortum Oslo Varme plant incinerates domestic and international sorted household and industrial waste. The excess heat is used to produce district heating and electricity.

DNV GL worked with Shell and Fortum Oslo Varme to verify the application of its recommended practices; DNVGL-RP-A203 Technology Qualification and DNVGL-RP-J201 Qualification procedures, for carbon dioxide capture technology. The recommended practices provide a systematic approach to technology qualification in a manner that ensures traceability throughout the process.

Steam and CO2 are emitted at Klemetsrud, where dust, dioxins, NOX HCL, SO2 and heavy metals are cleaned from the flue gas. The capture of more than 90 per cent of all CO2 in the flue gas was achieved during a pilot initiated in 2018. Going full scale with CCS, and with 50 per cent of waste incinerated at the plant being of biological origin, the environmental performance of the plant will be significantly improved by achieving net negative emissions.

Around 400,000 tonnes of CO2 can be captured at the site every year, the equivalent of removing 200,000 cars from regular use. The plan is that captured CO2 from the plant will be injected into geological formations thousands of metres below sea level West of Norway.

“The third-party technology qualification by DNV GL gave us confidence that the project risk related to implementing the Shell technology was low. The pilot plant demonstrated the ability to capture more than 90 per cent of the CO2 from the flue gas at our waste-to-energy plant in Oslo. When we establish a full-scale CO2-capture plant we can significantly reduce the city’s CO2 emissions. We aim to export the use of CCS to Europe’s waste-to-energy plants contributing to reaching the goals of the Paris Agreement,” said Jannicke Gerner Bjerkas, CCS-director in Fortum Oslo Varme.

Per Langer, Executive Vice President, City Solutions, Fortum added “We believe cities are leading forces for climate change and the Fortum Oslo Varme plant being connected to the city and its infrastructure is very well suited to act on climate change and create a cleaner world.”

DNV GL has also undertaken technology qualification at a second pilot site supported by Gassnova. In April, the risk management and quality assurance company approved CCS technology developed by Aker Solutions and tested at Norcem’s cement plant in Brevik, Norway.

Arve Johan Kalleklev, Regional Manager, Norway and Eurasia, DNV GL – Oil & Gas said: “Carbon capture and storage is currently the only technology capable of achieving the significant reductions in CO2 emissions needed to lessen the environmental impact of industrial processes around the world.”