物理性吸收技術之能耗低於二氧化碳化學吸收技術，然而僅適用於高二氧化碳分壓系統。創新的二氧化碳併合吸收與氣提薄膜模組(HASMC)，包括可藉由同時進行吸收與氣提，提升模組性能。模組類型包括使用空通道與具間隔物通道之平行流與交錯流模組。本研究在Aspen Custom Model (ACM)平台上建立二維與三維數學模式，針對使用碳酸丙烯酯物理性吸收劑與聚醚醚酮薄膜之系統，分析併合吸收與氣提薄膜模組之模組內部質傳特性、操作參數影響與不同通道截面設計之性能。 因上下游緊鄰之吸收與氣提邊界層配置，交錯流併合模組之吸收劑再生效果優於平行流併合模組，此外，因間隔物提供之紊流促進效應，相較於空通道，使用間隔物通道之併合模組具有較佳之吸收與氣提性能。因此，使用間隔物通道之交錯流模組可提供最高之吸收與氣提通量。平行流模組採用縮小通道高度與交錯流模組採用梯形截面之模組設計均僅能提供有限的通量提升。 平行流空通道模組之質傳係數與Shah et al. (1978)關聯式預測值較接近，其他模組之質傳係數則均高於各適用關聯式之預測值。 Physical absorption process is less energy consuming than chemical absorption, however, it is only feasible for high partial pressure carbon dioxide. A novel hybrid absorption/stripping membrane contactors (HASMC) can effectively enhance the system performance by simultaneous absorption and stripping. In this study, 2D and 3D mathematical models were developed on the platform of Aspen Custom Model (ACM) to investigate the performance and design of HASMC, including the parallel- and cross-flow configurations as well as using empty and spacer-filled channels. The physical absorbent studied is propylene carbonate and the membrane is PEEK (Poly (ether ether ketone). Because of the upstream-downstream adjacent boundary layers of absorption and stripping, cross-flow hybrid modules can provide better solvent regeneration effect than parallel-flow hybrid modules. Compared to empty channels, because of the turbulence promoting effect, emplying modules using spacer-filled channels can obtain higher absorption and stripping fluxes. Hence, the cross-flow hybrid module using spacer-filled channels provides highest absorption and stripping fluxes. Parallel-flow module with reduced channel height and cross-flow modules with trapezoidal cross-section can provide limited flux improvement. The mass transfer coefficients of the empty channel, parallel flow modules are closer to the correlation of Shah et al. (1978), and the mass transfer coefficients of other modules are all much higher than the predicted values from various applicable correlations.
