Almazán Héctor, Fernández Javier, Blanco Sofía T
Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain.
Instituto de Investigación en Ingeniería de Aragón (I3A), Universidad de Zaragoza, Mariano Esquillor s/n, 50018 Zaragoza, Spain.
Energy Fuels. 2025 Jun 2;39(23):11173-11186. doi: 10.1021/acs.energyfuels.4c04818. eCollection 2025 Jun 12.
The feasibility of cocapturing CO with SO, CO, and (O or NO) from unpurified flue gas produced by oxy-fuel combustion and other processes was assessed by determining the influence of the simultaneous presence of these impurities on selected carbon capture and storage (CCS) operational parameters. These parameters were calculated based on experimental results obtained under CCS conditions. The density, vapor-liquid equilibrium, and speed of sound of [CO + 3.0038 mol % O + 0.09035 mol % SO + 0.17032 mol % CO] and [CO + 0.1410 mol % NO + 0.09100 mol % SO + 0.17002 mol % CO] mixtures were experimentally determined at temperatures between 263 and 373 K and pressures of up to 30 MPa for density and 190 MPa for speed of sound. Joule-Thomson coefficients and isentropic compressibilities of the mixtures were calculated from our experimental results. Using experimental and calculated data, we assessed the predictive capability of the EOS-CG, GERG-2008, and PC-SAFT equations of state. The simultaneous presence of the investigated impurities at the studied concentrations adversely affects the transport and storage steps in CCS; however, the behavior of the NO-containing mixture is very similar to that of pure CO. The implications of the chemical effects of the impurities were overlooked.
通过确定这些杂质的同时存在对选定的碳捕获与封存(CCS)运行参数的影响,评估了从氧燃料燃烧和其他过程产生的未净化烟道气中共捕获一氧化碳与二氧化硫、一氧化碳和(氧气或一氧化氮)的可行性。这些参数是根据在CCS条件下获得的实验结果计算得出的。在263至373K的温度范围内,以及密度高达30MPa、声速高达190MPa的压力条件下,对[一氧化碳+3.0038摩尔%氧气+0.09035摩尔%二氧化硫+0.17032摩尔%一氧化碳]和[一氧化碳+0.1410摩尔%一氧化氮+0.09100摩尔%二氧化硫+0.17002摩尔%一氧化碳]混合物的密度、气液平衡和声速进行了实验测定。根据实验结果计算了混合物的焦耳-汤姆逊系数和等熵压缩率。利用实验和计算数据,我们评估了EOS-CG、GERG-2008和PC-SAFT状态方程的预测能力。在所研究的浓度下,所研究杂质的同时存在对CCS中的运输和储存步骤产生不利影响;然而,含一氧化氮混合物的行为与纯一氧化碳非常相似。杂质化学效应的影响被忽视了。