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创新，集成和适应性的CO2捕获转换系统，以使水泥行业脱碳，同时从废物CO2中产生有价值的水泥补充剂。在过渡到净零排放和循环经济时，工业烟气中的废物二氧化碳被认为是生产广泛增值产品的宝贵资源。到2030年，将美国的二氧化碳排放量减少到一半，就需要对水泥等行业的投资，而水泥却无法完全转移到无碳的能源上。美国目前每年生产约9000万吨水泥，进行几乎相同的二氧化碳。如果不能发明没有生态效率的替代水泥来完全取代波特兰水泥，那么在可预见的将来，将水泥行业脱碳的承诺策略就是将波特兰水泥转变为混合水泥。在该项目中，该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，以使用碳含碳处理的工业废物生产混合水泥。拟议的捕获转换技术将集成到水泥生产单元中，二氧化碳来自窑炉的冷却器端的烟道气体，并且可以使用水泥厂的废料和废热来运行二氧化碳转换过程。项目团队将探索开发经济可行的技术所需的基本化学反应，以将被捕获的二氧化碳转换为混合水泥。分子水平的基本发现（反应化学和吸附剂发育）将与广泛的过程建模，模拟和设计优化合并，以及代表性水泥制造设施的技术 - 经济分析（TEA）和严格的生命周期评估（LCA），无论有没有整合CO2捕获转换过程。该团队将利用融合科学原则来促进克服与以下方面相关的挑战所需的科学，技术和社会经济知识：1）二氧化碳捕获，2）CO2转换，3）流程系统工程和整合，以及4）环境可持续性评估，以加快水泥行业脱碳化的脱碳。该项目有可能为从水泥行业获得净零二氧化碳排放量开放新的机会，同时从废物资源（例如，碱性工业废物（如规范煤灰）中生产出宝贵的水泥补充剂）。假设采用广泛的技术采用和复制，预计美国的潜在盈利二氧化碳排放量为50吨/年，美国与Ash Grove水泥公司的合作可以增强其可能性。与Ash Grove合作伙伴合作的组成部分包括大学研究人员和Ash Grove工程师的学生暑期实习和二氧化碳捕获转换的半段。该奖项反映了NSF的法定任务，并通过基金会的知识分子优点和更广泛的影响审查标准，通过评估来诚实地对其进行评估。