Netstal GL – The Netstal lime factory has presented its project for capturing CO2 from lime production. The CO2 in the exhaust gas is to be highly concentrated and then liquefied. At the presentation, Federal Councilor Albert Rösti also attested to the technology’s high potential worldwide.
The Netstal lime factory(KFN) wants to liquefy around three quarters of its daily CO2 emissions from lime production instead of emitting them into the atmosphere. To this end, KFN plans to install an oxyfuel firing system with exhaust gas recirculation in the lime shaft kiln. Now the company has presented its corresponding project CO2 capture in the lime factory.
Federal Councillor Albert Rösti also took part in the presentation, KFN informed in a press release. The head of the Federal Department of the Environment, Transport, Energy and Communications had described the project as an important contribution to climate protection and also attested to the high potential of the corresponding technology worldwide.
With the aid of the oxyfuel firing system with flue gas recirculation and various innovations in the design of the lime kiln, the CO2 concentration in the flue gas is to be increased to more than 75 percent by volume. This makes it possible to subsequently liquefy the CO2 in an energy-efficient manner, KFN explains. The liquefied CO2 can then be sent for further processing or permanent storage.
Simulations and tests have already confirmed the potential of oxyfuel firing at the planned scale. KFN and technology partner Maerz Ofenbau are currently busy with preparatory work for the implementation in Netstal. KFN writes that there are still questions regarding financing. However, Konrad H. Marti, Head of Corporate Development at KFN, expects that the project can be realized in a commercially satisfactory manner in the near future. ce/hs
