CAJ | 학술논문

采用ProMax2.0模拟了30% (质量分数)单乙醇胺填料塔吸收 - 解吸CO_2的传统流程,考察了贫吸收液CO_2负载(CLL)和溶液循环流速(SCR)对解吸用再沸器热负荷(Qreb)的影响.全系统模拟结果表明,当CO_2 移除效率为90%时,CLL增加导致Qreb显著下降后再缓慢上升,其最佳值为0.20 mol CO_2/mol MEA (MCPM),此时Qreb达最小值3.24 GJ/t CO_2.单独的解吸系统模拟结果显示,当CLL 和富吸收液CO_2负载(CRL)不变时,解吸塔中富胺进料流量的变化不影响热负荷.然而,由于全吸收 - 解吸系统CLL和CRL的变化则直接导致解吸塔富胺进料流量和热负荷的变化.
채용ProMax2.0모의료30% (질량분수)단을순알전료탑흡수 - 해흡CO_2적전통류정,고찰료빈흡수액CO_2부재(CLL)화용액순배류속(SCR)대해흡용재비기열부하(Qreb)적영향.전계통모의결과표명,당CO_2 이제효솔위90%시,CLL증가도치Qreb현저하강후재완만상승,기최가치위0.20 mol CO_2/mol MEA (MCPM),차시Qreb체최소치3.24 GJ/t CO_2.단독적해흡계통모의결과현시,당CLL 화부흡수액CO_2부재(CRL)불변시,해흡탑중부알진료류량적변화불영향열부하.연이,유우전흡수 - 해흡계통CLL화CRL적변화칙직접도치해흡탑부알진료류량화열부하적변화.
The effects of CO_2 lean loading (CLL) and feeding rate of rich amine on reboiler heat duty (Qreb) for 30wt% MEA-based CO_2 baseline absorption-stripping process with a packed-bed absorber and a packed-bed stripper were simulated with ProMax2.0. The simulation was conducted for a whole absorption-stripping system and a decoupled stripping system, respectively, to obtain the single effect for each CLL and the solution circulation rate (SCR) that would otherwise impact Qreb interactively in the whole process. The results for the whole process simulation at 90% CO_2 removal efficiency showed that Qreb was rapidly dropped and then slightly increased with the increase of CLL. The minimum Qreb point was 3.24GJA CO_2, where CLL and CO_2 rich loadings (CRL) were 0.20 and 0.493 MCPM, respectively, and SCR was 335 NM~3/h. In contrast, for the decoupled stripping system, an increase in feeding rate of rich a-mine to the stripper under fixed CLL and CRL had no effect on the Qreb. However, the change of SCR for the absorption-stripping system, which was caused by a variation of solution composition including CLL, CRL or both, showed an influence on the heat duty.