CO2 Post-Combustion Capture Using Amine Impregnated Synthetic Zeolites

本提案涉及主题4：新的创新二氧化碳捕获技术。拟议的研究将涉及使用从粉煤灰中获得的合成沸石来支持浸渍和固定的胺，以促进煤和天然气发电厂的二氧化碳燃烧后捕获（PCC）。在发电厂广泛实施二氧化碳的障碍之一是与最成熟的PCC技术（胺洗涤）中溶剂再生相关的能源成本，与类似规模的燃煤电厂相比，燃气电厂的二氧化碳浓度更低，O2浓度更高，烟气流速更高，因此能源成本将更大。因此，需要开发替代或第二代PCC技术，以降低这种能源损失，同时降低资本和运营成本。固体吸附剂环技术（SALT）是一种新型的低成本技术，可以克服胺吸收的主要缺点。该技术依赖于吸附剂，可以在相对较低的温度和较短的停留时间内实现高二氧化碳吸收量。胺浸渍或固定在介孔材料，特别是铝硅酸盐，已被发现是特别有效的。在拟议的研究中，从粉煤灰中生产的沸石将被优化为PCC，这将大大降低碱性吸附剂的制备成本。该项目将结合MEERI/卢布林和诺丁汉大学各自在沸石合成和开发PCC基本吸附剂方面的优势。沸石将在卢布林以几公斤的规模生产，以便于在诺丁汉用真实（燃气）烟道气的流化床中进行测试。生产成本估计为每公斤沸石约1欧元，这比使用传统来源生产的二氧化硅和沸石要低得多。拟议研究的成功结果将有助于使SALT成为PCC更具成本效益的过程。

This proposal addresses Topic 4 in the Call: New innovative CO2 capture technologies. The proposed research will address using synthetic zeolites obtained from fly ash to support impregnated and immobilised amines to facilitate CO2 post-combustion capture (PCC) in both coal and natural gas power plants. One of the barriers to the widespread implementation of CO2 in power plants is the energy cost associated with solvent regeneration in the most mature PCC technology, amine scrubbing, which will be even greater for gas-fired power plants because of the lower CO2 concentration, higher O2 concentration and higher flue gas flow rate compared to similar sized coal-fired power plant. Hence, alternative or second generation PCC technologies need to be developed that have the potential to lower this energy penalty and also have lower capital and operating costs. Solid adsorbent looping technology (SALT) is a novel, potentially low-cost that can overcome the main drawbacks of amine absorption. The technology relies upon adsorbents that can achieve high CO2 uptakes at relatively low temperatures with short residence times. Amines either impregnated or immobilsed on mesoporous materials, particularly aluminosilicates, have been found to be particularly effective.In the proposed research, zeolites produced from fly ash will be optimised for PCC as a route that will considerably reduce the preparation costs for basic adsorbents. The project will combine the respective strengths of MEERI/Lublin and the University of Nottingham in zeolite synthesis and developing basic adsorbents for PCC. The zeolites will be produced at Lublin on a scale of several kilograms to facilitate testing in a fluidised bed with real (gas-fired) flue gases at Nottingham. The production cost is estimated to be ca. 1 euro/kg of zeolite, which is considerably lower than using silicas and zeolites produced from traditional sources. The successful outcome of the proposed research will contribute to making SALT a more cost-effective process for PCC.