Leenders Stefan H A M, Pankratova Galina, Wijenberg John, Romanuka Julija, Gharavi Farahnaz, Tsou Joana, Infantino Melina, van Haandel Lennart, van Paasen Sander, Just Paul-Emmanuel
Shell Global Solutions International B.V., Grasweg 31, 1031 HW, Amsterdam, the Netherlands.
ChemSusChem. 2023 Dec 19;16(24):e202300930. doi: 10.1002/cssc.202300930. Epub 2023 Sep 27.
Alternative to current liquid amine technologies for post-combustion CO capture, new technologies such as adsorbent-based processes are developed, wherein material lifetime and degradation is important. Herein a robust method to determine degradation rates in a laboratory setup is developed, which was validated with a continuous multi-staged fluidized bed pilot plant designed to capture 1 ton CO per day. An amine functionalized polystyrene adsorbent showed very good agreement between the experimental 1000-hour laboratory degradation rates and 2200 hours of degradation in a pilot plant. This validates how laboratory experiments can be extrapolated for sorbent screening and for scale-up. Resulting, the oxidative degradation in the desorber at high temperatures (120 °C) and low O concentrations (150 ppmv) is 3 times higher compared to the adsorber at low temperatures and high O (56 °C, 7 vol %). Laboratory degradation experiments can hence be used to further optimize process operations to limit degradation or screen for potential new adsorbents.
为了替代当前用于燃烧后二氧化碳捕集的液体胺技术，人们开发了诸如基于吸附剂的工艺等新技术，其中材料寿命和降解情况至关重要。在此，开发了一种在实验室装置中测定降解速率的可靠方法，该方法通过一个设计为每天捕集1吨二氧化碳的连续多级流化床中试装置进行了验证。一种胺官能化聚苯乙烯吸附剂在1000小时的实验室降解速率与中试装置中2200小时的降解情况之间显示出非常好的一致性。这验证了如何将实验室实验外推用于吸附剂筛选和放大。结果表明，在高温（120°C）和低氧浓度（150 ppmv）下解吸器中的氧化降解比在低温和高氧（56°C，7 vol%）下吸附器中的氧化降解高3倍。因此，实验室降解实验可用于进一步优化工艺操作以限制降解或筛选潜在的新型吸附剂。
