The design, capability and construction of a novel, experimental apparatus for the study of low temperature regeneration CO₂ capture agents is presented. The decisions and challenges in developing a new experimental capability are discussed, as well as how it addresses the experimental intermediate between bench scale experiments and large, application specific projects. To demonstrate the utility and capability of the apparatus, a low temperature regenerating CO₂ capture protic ionic liquid (PIL) solution – dimethylpropylenediamine acetate + 50% H₂O – was used to remove CO₂ from an incoming gas stream consisting of 10% (v/v) CO₂ in air. SuperPhobic^® 2.5 × 8 hollow fibre membrane contactors were used for both the absorption and regeneration processes. The loading-only experiment achieved pseudo steady state in approximately 12 min, achieving a pseudo steady-state mass transfer rate (K_overall) of (3.66 ± 0.2) × 10⁻⁵ m s⁻¹, and a CO₂ removal rate of 5.15 × 10⁻³ g m⁻² s⁻¹. This value is comparable to other ionic liquid CO₂ capture agents such as 1-ethyl-3-methylimidazolium ethylsulfate that have also been measured under pseudo-steady state conditions. In continuous operation, where CO₂ is absorbed and stripped in series, steady-state was achieved in approximately 15 h. Due to the higher concentration of CO₂ in the liquid under steady-state conditions, the value of K_overall decreased to (1.80 ± 0.1) × 10⁻⁵ m s⁻¹, with a CO₂ removal rate of 2.89 × 10⁻³ g m⁻² s^-1. The effects of several parameters on the steady-state CO₂ capture rate, namely vacuum pressure of regeneration and liquid flow through the contactor were studied. Several factors were found to affect the stability of the overall CO₂ removal rate, including H₂O loss from the aqueous solution. With the utility and flexibility of the designed system, we have demonstrated that PILs are certainly worthy of further investigation as CO₂ capture agents for a range of applications.

介绍了用于研究低温再生CO ₂捕集剂的新型实验装置的设计，性能和构造。讨论了开发新实验能力的决策和挑战，以及如何解决实验规模实验与大型，特定于应用程序的项目之间的实验中间问题。为了证明实用程序和设备的能力，低温再生CO ₂捕获质子型离子液体（PIL）溶液-醋酸dimethylpropylenediamine + 50％H ₂ -O -用于去除CO ₂从由10％的进入气流（ v / v）空气中的CO ₂。SuperPhobic脱气^®2.5×8中空纤维膜接触器用于吸收和再生过程。仅加载实验在大约12分钟内达到了伪稳态，达到了（3.66±0.2）×10 ^-5  m s ^-1的伪稳态传质速率（K _total），CO ₂去除率为5.15× 10 ^-3  g m ^-2  s ^-1。该值与其他离子液体CO ₂捕集剂（例如1-乙基-3-甲基咪唑乙基硫酸盐）相当，后者也已在拟稳态条件下进行了测量。在连续运行的情况下，CO ₂通过连续吸收和汽提，大约15小时即可达到稳态。由于CO浓度越高₂在稳态条件下的液体，K的值_整体降低至（1.80±0.1）×10 ^-5 米每秒^-1，与CO ₂的2.89×10去除率^-3 克间⁻²  s ^-1。研究了几个参数对稳态CO ₂捕集率的影响，即再生的真空压力和通过接触器的液体流量。被发现有几个因素影响整体CO的稳定性₂去除率，含H的₂O从水溶液中流失。凭借所设计系统的实用性和灵活性，我们证明了PIL作为CO ₂捕集剂在多种应用中的确值得进一步研究。