A membrane contactor process for pre-combustion CO₂ capture from shifted synthesis gas originated from IGCC power plant is assessed from the technical and economical point of views. The process is designed as pressure swing absorption and desorption in a closed loop. The design basis for process simulation were synthesis gas containing CO₂ and H₂ only, and the CO₂ capture efficiency was fixed to 90%. The CO₂ gas was absorbed in ionic liquid [bmim][TCM] inside a hydrophobic, porous hollow fibre membrane contactor. One-dimensional mathematical model of membrane contactor developed in MATLAB was integrated to the process simulation software (HYSYS) through Cape-Open simulation compiler. The energy evaluation of this process revealed that compressors are the most energy demanding process equipment. The specific energy requirement for this process is estimated 0.75 MJ/kg CO₂. A parametric study was also performed to analyse the effect of CO₂ concentration in feed gas and liquid to gas ratio. The capital cost investment and total operating costs of CO₂ capture unit were also evaluated. The capital investment required for capturing 0.14 M ton CO₂/year including CO₂ compression is 47.4 M $, and the operating cost per year is 9.04 M $. The membrane absorber contributed about 39% to total investment cost. The specific cost of this capture unit is calculated to be 87 $/ton CO₂.

从技术和经济角度评估了一种膜接触器工艺，该膜接触器工艺用于从IGCC电厂产生的变换后的合成气中捕集预燃烧CO ₂。该过程设计为闭环中的变压吸收和解吸。工艺模拟的设计基础是仅包含CO ₂和H _2的合成气，并且CO _2的捕集效率固定为90％。一氧化碳₂气体被吸收在疏水性多孔中空纤维膜接触器内的离子液体[bmim] [TCM]中。通过Cape-Open模拟编译器将在MATLAB中开发的膜接触器的一维数学模型集成到过程模拟软件（HYSYS）中。该过程的能源评估表明，压缩机是最耗能的过程设备。该过程的比能量需求估计为0.75 MJ / kg CO ₂。还进行了参数研究，以分析进料气中CO ₂浓度和液气比的影响。还评估了CO ₂捕集单元的资本成本投资和总运营成本。捕获14万吨CO ₂所需的资本投资/年（包括压缩CO _2）为4740万美元，每年的运营成本为904万美元。膜吸收器约占总投资成本的39％。该捕集单元的特定成本经计算为87 $ /吨CO ₂。