ECO-CBET: GOALI: CAS-Climate: Expediting Decarbonization of Cement Industry through Integration of CO2 Capture and Conversion

ECO-CBET：目标：CAS-气候：通过整合二氧化碳捕获和转化加速水泥行业脱碳

• 批准号: 2219086
• 负责人: Fateme Rezaei
• 金额: $ 169.56万
• 依托单位: Missouri University of Science and Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-01-01 至 2026-12-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2219086&HistoricalAwards=false
• 关键词: ECO; CBET; GOALI; CAS; Climate

The overall goal of this project is to deliver an innovative, integrated, and adaptable CO2 capture-conversion system to enable decarbonization of the cement industry while producing valuable cement supplements from waste CO2. In transitioning to a net-zero emission and circular economy, waste CO2 in industrial flue gases is considered as a valuable resource for production of a wide range of value-added products. Cutting America’s CO2 emissions in half by 2030 requires investment in industry sectors like cement that cannot shift entirely to carbon-free energy sources just yet. The U.S. is currently producing ~90 million tons of cement every year, emitting nearly the same amount of CO2. If no eco-efficient alternative cements can be invented to completely replace Portland cement, a promising strategy to decarbonize the cement industry in the foreseeable future is to transform Portland cement into blended cement. In this project, the approach is to capture CO2 from cement flue gas and use it as a renewable feedstock to produce blended cement using carbon-negatively processed industrial wastes. The proposed capture-conversion technology will be integrated into a cement production unit, where the CO2 comes from the flue gas of the cooler end of the kiln, and the waste materials and waste heat from the cement plant can be used to run the CO2 conversion process. The project team will explore the fundamental chemistry needed to develop economically viable technology to convert the captured CO2 to blended cement. The fundamental findings at the molecular level (reaction chemistry and sorbent development) will be merged with extensive process modeling, simulation, and design optimization, along with techno-economic analysis (TEA) and rigorous life cycle assessment (LCA) of representative cement manufacturing facilities with and without the integration of the CO2 capture-conversion process. The team will leverage convergence science principles to advance the scientific, technological, and socio-economic knowledge needed to overcome challenges associated with: 1) CO2 capture, 2) CO2 conversion, 3) process systems engineering and integration, and 4) environmental sustainability assessment for expediting the decarbonization of the cement industry. The project has the potential to open new opportunities for achieving net-zero CO2 emissions from the cement industry while producing a valuable cement supplement from waste resources (e.g., alkali industrial wastes such as off-specification coal ashes). Assuming broad technology adoption and replication, potential profitable CO2 emission reductions of 50 Mt/year are projected for U.S., the possibility of which is enhanced by collaboration with the Ash Grove Cement Company. Components of the collaboration with the Ash Grove partner include graduate student summer internships and seminars on CO2 capture-conversion by both University researchers and Ash Grove engineers.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.

该项目的总体目标是提供一个创新的、集成的、适应性强的二氧化碳捕获转换系统，以实现水泥行业的脱碳，同时从废二氧化碳中生产有价值的水泥补充物。在向净零排放和循环经济过渡的过程中，工业烟气中的废弃二氧化碳被视为生产各种增值产品的宝贵资源。要想在2030年前将美国的二氧化碳排放量减少一半，就需要对水泥等行业进行投资，而这些行业目前还不能完全转向无碳能源。美国目前每年生产约9000万吨水泥，排放几乎相同数量的二氧化碳。如果不能发明出生态高效的替代水泥来完全取代波特兰水泥，那么在可预见的未来，将波特兰水泥转化为混合水泥是使水泥行业脱碳的一个有希望的策略。在这个项目中，方法是从水泥烟气中捕获二氧化碳，并将其用作可再生原料，利用负碳处理的工业废物生产混合水泥。拟议的捕集-转化技术将被整合到一个水泥生产装置中，其中二氧化碳来自窑冷端的烟气，水泥厂的废料和废热可用于运行二氧化碳转化过程。项目团队将探索开发经济上可行的技术所需的基础化学，将捕获的二氧化碳转化为混合水泥。在分子水平上的基本发现（反应化学和吸附剂开发）将与广泛的过程建模、模拟和设计优化，以及技术经济分析（TEA）和严格的生命周期评估（LCA）相结合，对具有代表性的水泥生产设施进行整合和不整合二氧化碳捕获转换过程。该团队将利用融合科学原理来推进科学、技术和社会经济知识，以克服以下挑战：1)二氧化碳捕集，2)二氧化碳转换，3)过程系统工程和集成，以及4)加速水泥行业脱碳的环境可持续性评估。该项目有可能为水泥工业实现二氧化碳净零排放开辟新的机会，同时从废物资源（例如，碱工业废物，如不合规格的煤灰）中生产有价值的水泥补充物。假设广泛采用和复制该技术，预计美国每年可减少5000万吨二氧化碳排放，这一可能性通过与Ash Grove水泥公司的合作而增强。与Ash Grove合作伙伴的合作内容包括研究生暑期实习和由大学研究人员和Ash Grove工程师举办的二氧化碳捕获转化研讨会。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。