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CO2 Capture by Injection of Flue Gas or CO2–N2 Mixtures into Hydrate Reservoirs: Dependence of CO2 Capture Efficiency on Gas Hydrate Reservoir Conditions
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2018-03-14 00:00:00 , DOI: 10.1021/acs.est.7b05784 Aliakbar Hassanpouryouzband 1 , Jinhai Yang 1 , Bahman Tohidi 1 , Evgeny Chuvilin 2 , Vladimir Istomin 2 , Boris Bukhanov 2 , Alexey Cheremisin 2
Environmental Science & Technology ( IF 10.8 ) Pub Date : 2018-03-14 00:00:00 , DOI: 10.1021/acs.est.7b05784 Aliakbar Hassanpouryouzband 1 , Jinhai Yang 1 , Bahman Tohidi 1 , Evgeny Chuvilin 2 , Vladimir Istomin 2 , Boris Bukhanov 2 , Alexey Cheremisin 2
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Injection of flue gas or CO2–N2 mixtures into gas hydrate reservoirs has been considered as a promising option for geological storage of CO2. However, the thermodynamic process in which the CO2 present in flue gas or a CO2–N2 mixture is captured as hydrate has not been well understood. In this work, a series of experiments were conducted to investigate the dependence of CO2 capture efficiency on reservoir conditions. The CO2 capture efficiency was investigated at different injection pressures from 2.6 to 23.8 MPa and hydrate reservoir temperatures from 273.2 to 283.2 K in the presence of two different saturations of methane hydrate. The results showed that more than 60% of the CO2 in the flue gas was captured and stored as CO2 hydrate or CO2-mixed hydrates, while methane-rich gas was produced. The efficiency of CO2 capture depends on the reservoir conditions including temperature, pressure, and hydrate saturation. For a certain reservoir temperature, there is an optimum reservoir pressure at which the maximum amount of CO2 can be captured from the injected flue gas or CO2–N2 mixtures. This finding suggests that it is essential to control the injection pressure to enhance CO2 capture efficiency by flue gas or CO2–N2 mixtures injection.
中文翻译：
CO 2捕获由烟气或CO的注射2 -N 2个混合物成水合物油气藏：CO的依赖性2气体水合物储集条件捕集效率
将烟气或CO 2 -N 2混合物注入天然气水合物储层已被认为是CO 2地质储存的有前途的选择。然而，在其中所述CO热力学过程2本烟道气或CO在2 -N 2混合物被捕获作为水合物尚未很好地理解。在这项工作中，进行了一系列实验以研究CO 2捕集效率对储层条件的依赖性。一氧化碳2在存在两种不同饱和甲烷水合物的条件下，在2.6至23.8 MPa的不同注入压力和273.2至283.2 K的水合物储层温度下研究了捕集效率。结果表明，烟道气中超过60％的CO 2被捕获并以CO 2水合物或与CO 2混合的水合物形式储存，同时产生了富含甲烷的气体。CO 2捕集的效率取决于储层条件，包括温度，压力和水合物饱和度。对于特定的储层温度，有在该CO的最大数量的最佳储层压力2可以从被捕获注入烟道气或CO 2 -N 2混合物。这一发现表明，控制喷射压力以提高烟道气或CO 2 -N 2混合物喷射的CO 2捕集效率至关重要。
更新日期：2018-03-15
中文翻译：
CO 2捕获由烟气或CO的注射2 -N 2个混合物成水合物油气藏：CO的依赖性2气体水合物储集条件捕集效率
将烟气或CO 2 -N 2混合物注入天然气水合物储层已被认为是CO 2地质储存的有前途的选择。然而，在其中所述CO热力学过程2本烟道气或CO在2 -N 2混合物被捕获作为水合物尚未很好地理解。在这项工作中，进行了一系列实验以研究CO 2捕集效率对储层条件的依赖性。一氧化碳2在存在两种不同饱和甲烷水合物的条件下，在2.6至23.8 MPa的不同注入压力和273.2至283.2 K的水合物储层温度下研究了捕集效率。结果表明，烟道气中超过60％的CO 2被捕获并以CO 2水合物或与CO 2混合的水合物形式储存，同时产生了富含甲烷的气体。CO 2捕集的效率取决于储层条件，包括温度，压力和水合物饱和度。对于特定的储层温度，有在该CO的最大数量的最佳储层压力2可以从被捕获注入烟道气或CO 2 -N 2混合物。这一发现表明，控制喷射压力以提高烟道气或CO 2 -N 2混合物喷射的CO 2捕集效率至关重要。
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