Facilitated Transport Membranes for Carbon Capture from Flue Gas and H2 Purification from Syngas: From Membrane Synthesis to Process Design
| Main Author: | |
|---|---|
| Language: | English |
| Published: |
The Ohio State University / OhioLINK
2018
|
| Subjects: | |
| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=osu1543333780761185 |
| id |
ndltd-OhioLink-oai-etd.ohiolink.edu-osu1543333780761185 |
|---|---|
| record_format |
oai_dc |
| spelling |
ndltd-OhioLink-oai-etd.ohiolink.edu-osu15433337807611852021-08-03T07:08:53Z Facilitated Transport Membranes for Carbon Capture from Flue Gas and H2 Purification from Syngas: From Membrane Synthesis to Process Design Han, Yang Chemical Engineering Polymers Membrane carbon capture gas separation facilitated transport Polymeric facilitated transport membranes (FTMs) driven by reversible amine-CO<sub>2</sub> reactions were developed in this study for selective CO<sub>2</sub> separation from flue gas (CO<sub>2</sub>/N<sub>2</sub>) and syngas (CO<sub>2</sub>/H<sub>2</sub>).For post-combustion carbon capture, a FTM was synthesized in a composite membrane configuration with a 170 nm selective layer coated on a nanoporous substrate. In the selective layer, polyvinylamine with amine-sites covalently bonded to the polymer backbone was used as fixed-site carrier and an amino acid salt, synthesized by deprotonating sarcosine with 2-(1-piperazinyl)ethylamine, was blended as mobile carrier. Multi-walled carbon nanotubes wrapped by a copolymer poly(vinylpyrrolidone-<i>co</i>-vinyl acetate) were dispersed in the selective layer as reinforcement fillers to refrain the selective layer penetration upon vacuum suction. The membrane demonstrated a CO<sub>2</sub> permeance of 1451 GPU (1 GPU = 10<sup>-6</sup> cm<sup>3</sup>(STP)·cm<sup>-2</sup>·s<sup>-1</sup>·cmHg<sup>-1</sup>) and a CO<sub>2</sub>/N<sub>2</sub> selectivity >140 at testing conditions relevant to this separation modality.A field trial with 1.4 m<sup>2</sup> spiral-wound membrane modules fabricated from this FTM was conducted with actual flue gas at National Carbon Capture Center in Wilsonville, AL. The separation performances of the modules agreed well with those of the lab-scale flat-sheet membranes. A 500-h stability was demonstrated in spite of the interference of system upset and flue gas outage. Two membrane processes were designed for the FTM to decarbonizing coal-derived flue gas with 90% CO<sub>2</sub> recovery. Power plant combustion air and a CO<sub>2</sub>-depleted retentate within the membrane system were identified as effective sweep gases to provide the transmembrane driving force. Both membrane processes yielded a capture cost ca. 40/tonne CO<sub>2</sub> in 2011 dollars, which nearly met the target set by the U.S. Department of Energy for 2025.For pre-combustion carbon capture, FTMs were tailored for a single-stage membrane process to decarbonize coal-derived syngas. In these membranes, water-swellable crosslinked polyvinylalcohol was used as polymer matrix, along with polyvinylamine as fixed-site carrier. The 2-(1-piperazinyl)ethylamine salts of sarcosine and 2-aminoisobutyric acid served as the mobile carriers, while 1-(2-hydroxyethyl)piperazine and poly(ethylene glycol) dimethyl ether were incorporated as enhancers for the sorption of CO<sub>2</sub>. Nanoporous graphene oxide was dispersed to avoid membrane compaction upon a high feed pressure. The synthesized membranes showed different extents of carrier saturation at a high feed CO<sub>2</sub> partial pressure. To capitalize this feature, a single-stage membrane process with hybrid membrane allocation was designed. Initial techno-economic analysis showed that the membrane process could achieve 90% CO<sub>2</sub> removal with >99.3% H<sub>2</sub> recovery. A 15.7% increase in the cost of electricity was estimated, which was more cost-efficient than conventional physical solvents. 2018 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1543333780761185 http://rave.ohiolink.edu/etdc/view?acc_num=osu1543333780761185 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
| collection |
NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Chemical Engineering Polymers Membrane carbon capture gas separation facilitated transport |
| spellingShingle |
Chemical Engineering Polymers Membrane carbon capture gas separation facilitated transport Han, Yang Facilitated Transport Membranes for Carbon Capture from Flue Gas and H2 Purification from Syngas: From Membrane Synthesis to Process Design |
| author |
Han, Yang |
| author_facet |
Han, Yang |
| author_sort |
Han, Yang |
| title |
Facilitated Transport Membranes for Carbon Capture from Flue Gas and H2 Purification from Syngas: From Membrane Synthesis to Process Design |
| title_short |
Facilitated Transport Membranes for Carbon Capture from Flue Gas and H2 Purification from Syngas: From Membrane Synthesis to Process Design |
| title_full |
Facilitated Transport Membranes for Carbon Capture from Flue Gas and H2 Purification from Syngas: From Membrane Synthesis to Process Design |
| title_fullStr |
Facilitated Transport Membranes for Carbon Capture from Flue Gas and H2 Purification from Syngas: From Membrane Synthesis to Process Design |
| title_full_unstemmed |
Facilitated Transport Membranes for Carbon Capture from Flue Gas and H2 Purification from Syngas: From Membrane Synthesis to Process Design |
| title_sort |
facilitated transport membranes for carbon capture from flue gas and h2 purification from syngas: from membrane synthesis to process design |
| publisher |
The Ohio State University / OhioLINK |
| publishDate |
2018 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=osu1543333780761185 |
| work_keys_str_mv |
AT hanyang facilitatedtransportmembranesforcarboncapturefromfluegasandh2purificationfromsyngasfrommembranesynthesistoprocessdesign |
| _version_ |
1719454902185361408 |