PFI-TT: Novel Vortex-Flow Driven Process for Producing Calcium and Magnesium Carbonates Using Anthropogenic CO2

PFI-TT：利用人为二氧化碳生产碳酸钙和碳酸镁的新型涡流驱动工艺

• 批准号: 2141091
• 负责人: Greeshma Gadikota
• 金额: $ 25万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-02-01 至 2025-01-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2141091&HistoricalAwards=false
• 关键词: PFI; TT; Novel; Vortex; Flow

The broader impact/commercial potential of this Partnerships for Innovation - Technology Translation (PFI-TT) project is to produce new products for filler materials and in construction materials. The proposed technology enables industries emitting CO2 and producing alkaline industrial residues to capture and convert their emissions into commercially useful and stable products. It will replace the mining of carbonate materials with engineered products, meeting the growing demand for green construction materials.The proposed project will lead to the development of an innovative low-temperature approach to convert captured CO2 emissions into calcium and magnesium carbonates with regular particle size distributions. Currently there is no process in industry that integrates CO2 capture and regeneration via solid carbonate formation with regular pore size distributions. The proposed technology is an energy-efficient alternative to conventional thermally driven energy-intensive grinding approaches. The project will address challenges associated with the low solubility of CO2 by harnessing regenerable solvents, such as sodium glycinate. As an alternative to thermal regeneration of solvents, the CO2-loaded solvents are chemically regenerated using calcium and magnesium bearing materials that react with CO2 to produce inorganic carbonates and regenerate the solvents. The chemical regeneration of solvents at 50-75 °C via solid carbonate formation is significantly lower compared to conventional thermal regeneration of solvents which occurs above 90 °C. Calcium and magnesium carbonates with well-ordered particle size distributions are realized using turbulent vortices in a Taylor-Couette reactor customized for these studies. The research will advance fundamental aspects of reactor engineering, tuning of multiphase chemical interactions, and practical challenges of scalable implementation.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这种创新合作伙伴关系的更广泛的影响/商业潜力 - 技术翻译（PFI -TT）项目是为填充材料和建筑材料生产新产品。提出的技术使行业排放二氧化碳并生产醇工业恢复，以捕获并将其排放量转换为商业有用和稳定的产品。它将用工程产品代替碳酸盐材料的采矿，满足对绿色建筑材料的不断增长的需求。拟议的项目将导致开发一种创新的低温方法，以将捕获的二氧化碳排放转换为具有常规粒径分布的钙和镁碳酸盐。当前，行业中没有通过固体碳酸盐形成和常规的孔径分布来整合二氧化碳捕获和再生的过程。提出的技术是传统热能驱动能源密集型研磨方法的节能替代品。该项目将通过利用再生溶液（例如甘氨酸钠）来应对与二氧化碳溶液的低溶液相关的挑战。作为溶液热再生的一种替代方法，使用钙和镁轴承材料与CO2反应以产生无机碳酸盐并再生溶液进行化学再生。与在90°C以上发生的溶液的传统热再生相比，通过碳酸盐形成在50-75°C下溶液的化学再生显着降低。钙和镁碳酸盐具有良好的粒度分布，使用用于这些研究定制的泰勒 - 库特反应堆中的湍流涡流实现。这项研究将推进反应堆工程的基本方面，对多相化学相互作用的调整以及可扩展实施的实际挑战。该奖项反映了NSF的法定任务，并被认为是值得通过基金会的智力优点和更广泛的影响来通过评估来获得支持的。