CO₂ capture from point source with low CO₂ concentration

Background
Industrial point sources with low CO₂ concentration represent a major challenge for existing capture technologies. GreenCap Solutions has developed a process for CO₂ capture based on physical adsorption in zeolite material, without the use of chemicals. The technology is energy-efficient, modular, and well suited for low-concentration sources. It has already been demonstrated in practical operation through Direct Air Capture (DAC) units, and applied in CO₂ recovery solutions in agriculture (Agtech) as well as in industrial applications requiring CO₂-free air.
The project now targets application in process industries, where capturing and concentrating CO₂ from low-concentration flue gases remains a critical hurdle. The technology will be validated under such industrial conditions in collaboration with a major Norwegian industrial partner.

Goal
The aim of the project is to verify the performance of GreenCap’s zeolite-based capture technology against real flue gas streams from industry, and to reduce risk prior to a potential pilot module. A key objective is to document how impurities in the flue gas affect material performance and CO₂ capture efficiency.

Activities
The project involves construction and operation of a test rig for CO₂ adsorption and desorption from low-concentration flue gas. The testing includes:
• Operation under realistic industrial conditions
• Data collection and evaluation of system performance and robustness
• Investigation of effects from impurities (SOx, NOx, HF, particles)
• Technical reporting and assessment of next steps

Results
The project will generate increased knowledge on the practical use of zeolite-based CO₂ capture in industrial environments with low CO₂ concentrations. The results will support decisions on further development and scaling.

Further Work
A follow-up phase is planned involving pilot-scale demonstration and extended data collection. The long-term solution is intended to serve as a modular capture system for industrial applications.

Publications
The project is carried out with support from CLIMIT. Results will be reported in accordance with Gassnova’s requirements and published within the limitations of existing confidentiality agreements with project partners.