This work focuses on demonstrating the energetic performance and operational reliability in a continuous system of RTI's water-lean solvents for post-combustion CO₂ capture applications. RTI's Non-Aqueous Solvent, NAS-1A was subjected to 100 h of continuous, CO₂ capture and regeneration operation using a Lab-scale Gas Absorption System (LsGAS) while the CO₂ capture efficiency, mass balance, and total energy inputs were monitored. Throughout the test period, NAS-1A demonstrated stable operation with 90% CO₂ capture while requiring about 15% lower total energy input for solvent regeneration compared to 30 wt% monoethanolamine (MEA) solution. The use of a slipstream of CO₂-rich solvent from the absorber sump reduced the regenerated CO₂ temperature before the gas was further cooled by the overhead condenser at the top of the desorber. The rich-split setup combined with a wash section may be an effective approach to remove water and solvent vapor from the regenerated CO₂ as well as to recover heat at the top of the desorber. NAS-1B was later developed and included a modifier component that lowers the heat of CO₂ absorption and reduces the vapor pressure of the amine component. The total energy inputs for 90% CO₂ capture with NAS-1B was found to be 25% less than that of the MEA. A gas chromatograph was used to monitor the amine concentration in the gas leaving the absorber wash section. It was found that under similar operating conditions, the presence of the modifier in NAS-1B reduces the amine in the absorber off-gas from 143 ppm in NAS-1A to 20 ppm.

这项工作的重点是展示用于燃烧后 CO ₂捕获应用的 RTI 贫水溶剂连续系统的能量性能和运行可靠性。RTI 的非水溶剂 NAS-1A使用实验室规模的气体吸收系统 (LsGAS)进行 100 小时的连续 CO ₂捕获和再生操作，同时监测CO ₂捕获效率、质量平衡和总能量输入. 在整个测试期间，NAS-1A 在 90% 的 CO ₂捕获下表现出稳定运行，同时与 30 wt% 的单乙醇胺 (MEA) 溶液相比，溶剂再生所需的总能量输入降低了约 15%。CO ₂滑流的使用在气体被解吸器顶部的塔顶冷凝器进一步冷却之前，来自吸收器贮槽的富溶剂降低了再生的 CO ₂温度。富分流装置与洗涤段相结合可能是从再生 CO _{2 中}去除水和溶剂蒸气以及在解吸器顶部回收热量的有效方法。后来开发出 NAS-1B 并包含一种改性剂组分，可降低 CO ₂吸收热量并降低胺组分的蒸气压。90% CO ₂的总能量输入发现使用 NAS-1B 的捕获率比 MEA 少 25%。使用气相色谱仪监测离开吸收器洗涤段的气体中的胺浓度。发现在类似的操作条件下，NAS-1B 中改性剂的存在将吸收器废气中的胺从 NAS-1A 中的 143 ppm 减少到 20 ppm。