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Federal Councilor Roesti visits Kalkfabrik Netstal, Switzerland, for a CO₂ pilot project

Kalkfabrik Netstal put a new natural gas-fired Maerz-PFR kiln into operation a few years ago. Now this kiln is to be converted as part of a pilot project for the extraction of CO2 for the food industry (Carbon Capture and Utilisation).

The latest Maerz EcoKiln® technology is to be used, with the aid of which the CO2 in the kiln exhaust gas is highly enriched on the one hand by recirculating oxygen-enriched flue gas instead of using combustion air (oxyfuel firing) and on the other hand by partial extraction of the cooling air. This avoids the costly further concentration of the CO2 in the flue gas with the help of an energy-intensive amine scrubber, but allows the use of an energetically much more favorable PSA system (Pressure Swing Adsorption) before the gas with highly concentrated CO2 is fed to liquefaction and further use.

This groundbreaking project has attracted the attention of UVEK, the Swiss Ministry for the Environment, Transport and Energy. The head of this ministry, Federal Councilor Dr Albert Roesti, visited Kalkfabrik Netstal on 22 May 2023 to gain a personal impression of the plant and the pilot project. On this occasion, Maerz was able to present the Maerz EcoKiln® technology to Mr Rösti's delegation as part of the plant tour.

The visit attracted a lot of interest in the local media - with the kind permission of Swiss Television you can find the video here (in Swiss German) and with the kind permission of the Glarner Tagblatt you can find the report on this visit here.


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