CO2 desorption from rich alkanolamine solution by using membrane vacuum regeneration technology

Membrane Stripping Technology for CO2 Desorption from CO2-rich Absorbents with Low Energy Consumption

“…This is expected since a lower liquid velocity leads to an increase in residence time (reaction time) in membrane module. The similar result was also reported by Wang et al [10] and Fang et al [12]. Additionally, PP membrane module presents a better performance than PVDF membrane module.…”

“…The pure CO 2 gas (purity > 99.9%), provided by Hangzhou Jingong Gas Co., Ltd., was used to prepare the CO 2 loaded solvent by introducing to the fresh solvent in a bubbling reactor. The CO 2 -loading of solutions can be determined by the standard method described in our previous work [12].…”

“…Kosaraju et al [8] firstly demonstrated the feasibility of CO 2 membrane stripping using commercial PP membrane contactors by long term running for 55 days. Fang et al [12] further studied CO 2 membrane stripping comprehensively with using monoethanolamine (MEA) as absorbent. Besides MEA absorbent, Wang et.…”

A review: Desorption of CO 2 from rich solutions in chemical absorption processes

“…A summary of membrane regeneration process is given in Table 3. The ideal membrane material should have the following characteristics: high mechanical strength; high permeate flux and selectivity for CO 2 ; great hydrophobicity without membrane wetting; high chemical and thermal stability; commercial application approvable (Fang et al, 2012).…”

“…And lean loading after regeneration with different methods, including thermal regeneration by two other authors, MVR with and without sweeping stream, was also compared. Fang et al (2012) selected MEA as absorbent and regenerated rich solutions in a polypropylene (PP) hollow fiber membrane contactor. Reduced pressure combined with the steam sweeping was used in the gas side of membrane.…”