I-Corps: CO2 hydrate production for large-scale CO2 sequestration

I-Corps：用于大规模二氧化碳封存的二氧化碳水合物生产

• 批准号: 2202071
• 负责人: Vaibhav Bahadur
• 金额: $ 5万
• 依托单位: University of Texas at Austin
• 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: 2022-03-15 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2202071&HistoricalAwards=false
• 关键词: Corps; CO2; hydrate; production; large

The broader impact/commercial potential of this I-Corps project is the development of technology to sequester carbon dioxide (CO2) as CO2 hydrates. CO2 hydrates are ice-like solids, consisting of CO2 and water. Stable CO2 hydrates form at ~0 ̊C, and at moderate pressures (~450 psi) from a mixture of CO2 and water. CO2 hydrates can be safely sequestered long-term via multiple options (under seabed, under permafrost, depleted gas fields). This I-Corps project targets eventual commercialization of CO2 hydrates-based carbon capture and sequestration (CCS). Many commercialization partners exist among process industries, oil-gas industry, and utilities. A likely post-project scenario involves establishing a startup company as the commercialization vehicle (which develops sector-specific CCS solutions). Successful commercialization may lead to significant employment opportunities, and contribute to positioning the US as a leader in this field. Most importantly, it will augment the portfolio of technological and geoengineering solutions to tackle climate change. This project also will stimulate other applications of gas hydrates including desalination, gas separation and hydrogen storage.This I-Corps project is based on the development of technology to rapidly form CO2 hydrates from a mixture of CO2 and water. Key technological challenges underlying artificial synthesis of hydrates have been very slow growth rates, and low conversion rates of gas to hydrates. State of the art technology to speed up hydrate formation includes the use of chemical promoters, which are expensive and environmentally friendly. The team at UT Austin has made several scientific discoveries and developed multiple novel approaches to speed up growth of hydrates, which may cumulatively speed up hydrate formation by an order of magnitude faster than state-of-the-art. Specific novel advancements integrated in the proposed technology include recently discovered hydrate nucleation promoters, a technique to enhance gas-liquid interfacial area and convection, and the use of high thermal conductivity materials to speed up heat transfer. Cumulatively, these advancements may enable rapid, on-demand CO2 hydrate production without the use of chemical promoters. The intellectual merit of this project lies in the integration of multiple fundamental advancements to realize rapid hydrate formation in reactor configurations commonly used by the chemicals processing industry.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.

这个I-Corps项目更广泛的影响/商业潜力是开发以二氧化碳水合物形式封存二氧化碳的技术。二氧化碳水合物是冰状固体，由二氧化碳和水组成。稳定的CO2水合物在~0 ° C和中等压力（~450 psi）下由CO2和水的混合物形成。二氧化碳水合物可以通过多种选择（海底、永久冻土、枯竭气田）安全地长期封存。这个I-Corps项目的目标是最终实现基于二氧化碳水合物的碳捕获和封存（CCS）的商业化。在加工工业、石油天然气工业和公用事业中存在许多商业化合作伙伴。一个可能的项目后情景是建立一个创业公司作为商业化工具（开发特定部门的CCS解决方案）。成功的商业化可能会带来大量的就业机会，并有助于将美国定位为该领域的领导者。最重要的是，它将扩大技术和地球工程解决方案的组合，以应对气候变化。该项目还将促进天然气水合物的其他应用，包括海水淡化、气体分离和氢储存。该I-Corps项目的基础是开发从二氧化碳和水的混合物中快速形成二氧化碳水合物的技术。人工合成水合物的关键技术挑战是生长速度非常慢，天然气转化为水合物的转化率低。加速水合物形成的现有技术包括使用昂贵且环境友好的化学促进剂。UT Austin的团队已经取得了几项科学发现，并开发了多种新方法来加速水合物的生长，这可能会累计加速水合物的形成，速度比现有技术快一个数量级。拟议技术中集成的具体新进展包括最近发现的水合物成核促进剂，一种增强气液界面面积和对流的技术，以及使用高导热性材料来加速热传递。累积起来，这些进步可以在不使用化学促进剂的情况下实现快速、按需的CO2水合物生产。该项目的智力价值在于整合了多项基本进步，以在化学品加工行业常用的反应器配置中实现快速水合物形成。该奖项反映了NSF的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Analysis of CO2 hydrate formation from flue gas mixtures in a bubble column reactor

• DOI: 10.1016/j.seppur.2023.125261
• 发表时间: 2023-10
• 期刊: Separation and Purification Technology
• 影响因子: 8.6
• 作者: Awan Bhati;Aritra Kar;V. Bahadur

Numerical study on CO2 hydrate formation in a bubble column reactor from flue gas mixtures

鼓泡塔反应器中烟气混合物生成CO2水合物的数值研究

• 发表时间: 2023
• 期刊: Proceedings of ASME 2023 International Mechanical Engineering Congress & Exposition (IMECE
• 作者: Bhati A.;Kar A.;Bahadur V
• 通讯作者: Bahadur V

Hydrates Based Carbon Capture System in Texas: A Techno-Economic Perspective

德克萨斯州基于水合物的碳捕获系统：技术经济视角

• 发表时间: 2023
• 期刊: Proceedings of ASME 2023 International Mechanical Engineering Congress & Exposition (IMECE
• 作者: Acharya P. V.;Bhati A.;Bahadur V
• 通讯作者: Bahadur V