Towards Achieving Zero Emissions through the use of an Environmentally Benign Non-Regenerable Solvent to Capture CO2 from Large Point Source Emitters for Direct Permanent Storage in Geological Formation or Usage in Accelerated Curing of Ready-mix Con

通过使用环境友好的不可再生溶剂从大型点源排放器捕获二氧化碳，直接永久储存在地质构造中或用于预拌混凝土的加速固化，从而实现零排放

• 批准号: RGPIN-2022-03431
• 负责人: Idem, Raphael
• 金额: $ 4.66万
• 依托单位: University of Regina
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=752793
• 关键词: Towards; Achieving; Zero; Emissions; through

Carbon capture, utilization and storage (CCUS) is the most mature and predominant technology that can abate anthropogenic climate change through the reduction of greenhouse gas emissions. It stands as the anchor technology that can address the removal of CO2 from a wide variety of large point-source emitters such as fossil fuel utilities, iron and steel industry, cement industry, natural gas processing, refineries, biomass/gas co-firing, etc. Although extensive work has been done in the capture of CO2 from utilities, reformate and natural gas, practical work is scant on a CO2 capture process for other large point source emitters whose exhaust gases may contain different components and concentrations. In a typical solvent based CO2 capture process, absorption of CO2 in the solvent occurs in the absorber. The release of CO2 from the solvent occurs in the desorber where heat energy is used to boil off the CO2 from the solvent. The entire process can be both very capital and energy intensive. The desorption process constitutes about 80% of the operating costs. If CO2 capture process is applied to treat all large point-source emitters, the cost to industry related to desorption will not be sustainable. Also, if the CO2 captured from these industries is used for enhanced oil recovery and/or manufacture of synthetic fuels as currently practiced, then CO2 abatement will not be achievable because CO2 will eventually be reintroduced back to the environment thereby negating the purpose of CO2 emissions abatement. On the other hand, direct storage in geological formation is presently extremely expensive. All these constitute major barriers to the widespread commercial application of CCUS. The overall goal of the research is to develop an innovative CO2 capture technology that will not require solvent regeneration. Instead, the environmentally benign CO2-rich solvent will be used as is for permanent storage in geological formations or accelerated curing of ready-mix concrete. The objectives are to: 1 Develop environmentally benign solvents for effective capture of CO2 from any large industrial emitter. 2 Develop an effective alkaline heterogeneous absorption catalyst to facilitate CO2 capture. 3 Develop a process that eliminates the desorber column and all its auxiliary parts. 4 Develop processes for CO2-rich solvent direct storage in geological formations or accelerated curing of ready-mix concrete. The benefits are: 1 Complete elimination of all the CCUS barriers. 2 Efficient and cost effective processes for storing CO2 in concrete or geological formations 3 Tremendous reduction in CO2 capture costs thereby making it feasible and attractive for all large point source emitters. 4 Enhancement of concrete properties. 5 Captured CO2 is permanently buried in concrete or geological formations which achieve the global net zero CO2 emissions. 6 Improvement of the business case for CO2 capture and wide applicability in any industrial exhaust gas stream.

碳捕获、利用和封存（CCUS）是通过减少温室气体排放来减缓人为气候变化的最成熟和最具优势的技术。它作为锚技术，可以解决从各种各样的大型点源排放器中去除CO2的问题，例如化石燃料公用事业、钢铁工业、水泥工业、天然气加工、炼油厂、生物质/天然气混合燃烧等。尽管在从公用事业、重整油和天然气中捕获CO2方面已经做了大量工作，对于其它大的点源排放器的CO2捕集过程的实际工作很少，所述其它大的点源排放器的废气可能含有不同的组分和浓度。在典型的基于溶剂的CO2捕获工艺中，在吸收器中发生溶剂中的CO2的吸收。CO2从溶剂中的释放发生在解吸器中，其中热能用于从溶剂中蒸发CO2。整个过程可能是非常资本和能源密集型的。解吸过程约占运营成本的80%。如果将CO2捕集工艺应用于处理所有大型点源排放者，则与解吸相关的工业成本将是不可持续的。此外，如果从这些工业中捕获的CO2用于提高石油采收率和/或如目前实践的合成燃料的制造，则CO2减排将是不可实现的，因为CO2最终将被重新引入到环境中，从而否定了CO2减排的目的。另一方面，在地质构造中直接储存目前极其昂贵。所有这些都是CCUS广泛商业应用的主要障碍。该研究的总体目标是开发一种不需要溶剂再生的创新CO2捕获技术。相反，这种对环境无害的富二氧化碳溶剂将被用于地质构造中的永久储存或预拌混凝土的加速固化。 目标是：1开发环境友好的溶剂，有效地捕获任何大型工业排放的二氧化碳。 2开发有效的碱性非均相吸收催化剂以促进CO2捕集。3开发一种去除解吸塔及其所有辅助部件的工艺。4开发将富二氧化碳溶剂直接储存在地质构造中或加速预拌混凝土固化的工艺。好处是：1完全消除所有CCUS障碍。 2用于在混凝土或地质构造中储存CO2的高效且具有成本效益的方法3 CO2捕获成本的巨大降低，从而使其对于所有大型点源排放者都是可行的和有吸引力的。4提高混凝土性能。5捕获的二氧化碳被永久地埋在混凝土或地质构造中，实现全球二氧化碳净零排放。6改进二氧化碳捕获的商业案例并广泛适用于任何工业废气流。