Bench Scale Testing of Next Generation Hollow Fiber Membrane Modules
Carbon Management Technology Conference
2019
Carbon Management Technology Conference 2019 (CMTC 2019)
General Submissions
Session 1: Carbon Capture - Transformational and 2nd Generation (I)
Air Liquide is developing a next generation polyimide membrane material (PI-2) for application in our cold membrane hybrid process for CO2 capture. Combining the PI-2 membrane operation with an integrated CO2 compression and purification unit significantly reduces the overall cost of CO2 capture. The current work is aimed at developing the PI-2 material to a commercial scale, then validating its performance under real flue gas conditions.
Previous work showed promising results for the cold membrane hybrid process utilizing the commercially available Air Liquide PI-1 membrane bundles. The cold membrane technology was demonstrated at the National Carbon Capture Center (NCCC) with a 0.3 MWe field-test unit incorporating 12â diameter PI-1 commercial bundle. The cost of 90% CO2 capture from a 550 MWe net coal power plant was estimated to be between 40 and $45/tonne. The novel PI-2 membrane was tested at a smaller scale (1â modules) and exhibited up to 10 times the CO2 permeance and similar CO2/N2 selectivity as the PI-1 membrane. This corresponds to a potential cost reduction of $3/tonne for CO2 capture.
The current project seeks to develop this next generation PI-2 material to a technology readiness level of 5 via manufacturing scale-up and testing with 600 - 1,000 Nm3/h of real flue gas, 0.2 - 0.3 MWe equivalents. 6â diameter commercial membrane bundles have been fabricated and tested at NCCC. These bundles met the project success criteria with a productivity of over 640 Nm3/hr and permeate purity in excess of 60%, at 90% CO2 recovery. An advanced bundle formation technique, which further lowers the bundle cost and CO2 capture cost, is also being developed under the scope of this project. Further manufacturing scale-up is underway to verify the technique. A final techno-economic analysis (TEA) for a 550 MWe net power plant has been initiated.