ANR- Understanding CO2 capture processes: a combination of reactive molecular simulation, thermodynamic modelling and experiments

ANR-了解二氧化碳捕获过程：反应分子模拟、热力学建模和实验的结合

• 批准号: 479466-2015
• 负责人: Smith, William
• 金额: $ 11.23万
• 依托单位: University of Guelph
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=580089
• 关键词: ANR; Understanding; CO2; capture; processes

Carbon Capture and Storage (CCS) technologies applied to fixed CO2 sources is currently considered to be one of the most promising methods to reduce greenhouse gas emissions. CCS is based on the selective separation of CO2 in the industrial effluent by chemical absorption into solution. An advantage of this technology is that it can be integrated into existing industrial sites without major facility modifications. Capture processes are based on absorption/desorption cycles of gas in aqueous solvent solutions. The most usual absorbents are alkanolamines, which are already used for the deacidification of natural gas. The aqueous amine solutions loaded with CO2 are subsequently regenerated by desorption in a stripper, and the solvent is returned to the absorber. CO2 is then compressed and transported for use elsewhere or for secure storage. The main drawback of the technology is the extremely high cost of linked to the energy cost of the desorption/compression step. The proposed project will combine the use of advanced molecular simulation methodologies, experimental measurement of physico-chemical properties and the development of robust thermodynamic models to provide key information on the molecular organization of such solutions and on their probable structure-property relationships. In the quest for improved solvents, the combination of those three scientific dimensions will enable the ability to provide clear and well-defined goals for the development of the processes on industrial scales. This project provides a synergistic collaboration between French and Canadian laboratories in joining their unique skills to describe in a realistic way the interactions involved in the water-amine-CO2 systems of interest.

应用于固定CO2源的碳捕获和封存(CCS)技术目前被认为是最有前途的温室气体减排方法之一。CCS的基础是通过化学吸收进入溶液选择性地分离工业废水中的二氧化碳。这项技术的一个优势是，它可以集成到现有的工业场地中，而不需要进行重大的设施改造。捕集过程基于气体在水溶液中的吸收/解吸循环。最常见的吸收剂是烷醇胺，它已经被用于天然气的脱酸。装载二氧化碳的胺水溶液随后在汽提塔中通过解吸再生，并将溶剂返回到吸收塔。然后，二氧化碳被压缩并运输到其他地方使用或安全存储。该技术的主要缺点是与解吸/压缩步骤的能源成本挂钩的极高的成本。 拟议的项目将结合使用先进的分子模拟方法、物理化学性质的实验测量和强大的热力学模型的开发，以提供关于此类溶液的分子组织及其可能的结构-性质关系的关键信息。在寻求改进的溶剂方面，这三个科学维度的结合将使人们能够为工业规模的工艺发展提供明确和明确的目标。 该项目提供了法国和加拿大实验室之间的协同合作，结合他们的独特技能，以现实的方式描述感兴趣的水-胺-二氧化碳系统中涉及的相互作用。