气候变化领域集成服务门户(CCPortal): Process Operability Analysis of Membrane-Based Direct Air Capture for Low-Purity CO2 Production

CCPortal

DOI	10.1021/acsengineeringau.3c00069
	Process Operability Analysis of Membrane-Based Direct Air Capture for Low-Purity CO2 Production
	Gama, Vitor; Dantas, Beatriz; Sanyal, Oishi; Lima, Fernando V.
发表日期	2024
EISSN	2694-2488
英文摘要	Addressing climate change constitutes one of the major scientific challenges of this century, and it is widely acknowledged that anthropogenic CO2 emissions largely contribute to this issue. To achieve the net-zero target and keep the rise in global average temperature below 1.5 degrees C, negative emission technologies must be developed and deployed at a large scale. This study investigates the feasibility of using membranes as direct air capture (DAC) technology to extract CO2 from atmospheric air to produce low-purity CO2. In this work, a two-stage hollow fiber membrane module process is designed and modeled using the AVEVA Process Simulation platform to produce a low-purity (approximate to 5%) CO2 permeate stream. Such low-purity CO2 streams could have several possible applications such as algae growth, catalytic oxidation, and enhanced oil recovery. An operability analysis is performed by mapping a feasible range of input parameters, which include membrane surface area and membrane performance metrics, to an output set, which consists of CO2 purity, recovery, and net energy consumption. The base case for this simulation study is generated considering a facilitated transport membrane with high CO2/N-2 separation performance (CO2 permeance = 2100 GPU and CO2/N-2 selectivity = 1100), when tested under DAC conditions. With a constant membrane area, both membranes' intrinsic performances are found to have a considerable impact on the purity, recovery, and energy consumption. The area of the first module plays a dominant role in determining the recovery, purity, and energy demands, and in fact, increasing the area of the second membrane has a negative impact on the overall energy consumption, without improving the overall purities. The CO2 capture capacity of DAC units is important for implementation and scale-up. In this context, the performed analysis showed that the m-DAC process could be appropriate as a small-capacity system (0.1-1 Mt/year of air), with reasonable recoveries and overall purity. Finally, a preliminary CO2 emissions analysis is carried out for the membrane-based DAC process, which leads to the conclusion that the overall energy grid must be powered by renewable sources for the technology to qualify within the negative emissions category.
英文关键词	process design; membrane DAC; process operability; hollow fibers; CO2 capture
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Chemical
WOS记录号	WOS:001193617800001
来源期刊	ACS ENGINEERING AU
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/305622
作者单位	West Virginia University
推荐引用方式 GB/T 7714	Gama, Vitor,Dantas, Beatriz,Sanyal, Oishi,et al. Process Operability Analysis of Membrane-Based Direct Air Capture for Low-Purity CO2 Production[J],2024.
APA	Gama, Vitor,Dantas, Beatriz,Sanyal, Oishi,&Lima, Fernando V..(2024).Process Operability Analysis of Membrane-Based Direct Air Capture for Low-Purity CO2 Production.ACS ENGINEERING AU.
MLA	Gama, Vitor,et al."Process Operability Analysis of Membrane-Based Direct Air Capture for Low-Purity CO2 Production".ACS ENGINEERING AU (2024).