Details
| Original language | English |
|---|---|
| Pages (from-to) | 9377-9384 |
| Number of pages | 8 |
| Journal | Industrial and Engineering Chemistry Research |
| Volume | 49 |
| Issue number | 19 |
| Early online date | 2 Sept 2010 |
| Publication status | Published - 6 Oct 2010 |
Abstract
The production of O2-enriched air and of high-purity oxygen was studied in a flow-through and in a dead-end permeator with BaCo xFeyZr1-x-yO3-δ (BCFZ) hollow fiber membranes at high temperatures using (i) pressurized air/O 2-enriched air as feed, (ii) reduced pressure on the permeate side, and (iii) a combination of both. For the effective production of oxygen with a high space-time yield, a two-step process is proposed. In a first step, O 2-enriched air with an oxygen concentration of 30-50 vol % is produced in a flow-through permeator from 1 bar of air as feed applying a vacuum pump to keep the pressure on the O2-enriched air side at about 0.12 bar. In a second step, pure oxygen is produced in a dead-end permeator using the O2-enriched air from step 1 as pressurized feed and using again a vacuum pump to establish a reduced oxygen pressure of about 0.05 bar on the permeate side. The oxygen permeation fluxes increase with increasing temperature, pressure on the feed side, and oxygen concentration in the fed O2-enriched air. An oxygen permeation flux of 10.2 cm3 (STP) cm-2 min-1 was reached using O2-enriched air with 50 vol % O2 at 5 bar as feed and reduced pressure of 0.05 bar on the permeate side at 900 °C. A high oxygen purity up to 99.9 vol % and high permeation rates of almost 10 cm3 (STP) cm-2 min-1 were obtained at 900 °C in a 150 h operation under the conditions of 0.05 bar on the oxygen side and oxygen-enriched air at 4 bar on the feed side.
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Chemical Engineering(all)
- General Chemical Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Industrial and Engineering Chemistry Research, Vol. 49, No. 19, 06.10.2010, p. 9377-9384.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - High-purity oxygen production from air using perovskite hollow fiber membranes
AU - Liang, Fangyi
AU - Jiang, Heqing
AU - Schiestel, Thomas
AU - Caro, Jürgen
PY - 2010/10/6
Y1 - 2010/10/6
N2 - The production of O2-enriched air and of high-purity oxygen was studied in a flow-through and in a dead-end permeator with BaCo xFeyZr1-x-yO3-δ (BCFZ) hollow fiber membranes at high temperatures using (i) pressurized air/O 2-enriched air as feed, (ii) reduced pressure on the permeate side, and (iii) a combination of both. For the effective production of oxygen with a high space-time yield, a two-step process is proposed. In a first step, O 2-enriched air with an oxygen concentration of 30-50 vol % is produced in a flow-through permeator from 1 bar of air as feed applying a vacuum pump to keep the pressure on the O2-enriched air side at about 0.12 bar. In a second step, pure oxygen is produced in a dead-end permeator using the O2-enriched air from step 1 as pressurized feed and using again a vacuum pump to establish a reduced oxygen pressure of about 0.05 bar on the permeate side. The oxygen permeation fluxes increase with increasing temperature, pressure on the feed side, and oxygen concentration in the fed O2-enriched air. An oxygen permeation flux of 10.2 cm3 (STP) cm-2 min-1 was reached using O2-enriched air with 50 vol % O2 at 5 bar as feed and reduced pressure of 0.05 bar on the permeate side at 900 °C. A high oxygen purity up to 99.9 vol % and high permeation rates of almost 10 cm3 (STP) cm-2 min-1 were obtained at 900 °C in a 150 h operation under the conditions of 0.05 bar on the oxygen side and oxygen-enriched air at 4 bar on the feed side.
AB - The production of O2-enriched air and of high-purity oxygen was studied in a flow-through and in a dead-end permeator with BaCo xFeyZr1-x-yO3-δ (BCFZ) hollow fiber membranes at high temperatures using (i) pressurized air/O 2-enriched air as feed, (ii) reduced pressure on the permeate side, and (iii) a combination of both. For the effective production of oxygen with a high space-time yield, a two-step process is proposed. In a first step, O 2-enriched air with an oxygen concentration of 30-50 vol % is produced in a flow-through permeator from 1 bar of air as feed applying a vacuum pump to keep the pressure on the O2-enriched air side at about 0.12 bar. In a second step, pure oxygen is produced in a dead-end permeator using the O2-enriched air from step 1 as pressurized feed and using again a vacuum pump to establish a reduced oxygen pressure of about 0.05 bar on the permeate side. The oxygen permeation fluxes increase with increasing temperature, pressure on the feed side, and oxygen concentration in the fed O2-enriched air. An oxygen permeation flux of 10.2 cm3 (STP) cm-2 min-1 was reached using O2-enriched air with 50 vol % O2 at 5 bar as feed and reduced pressure of 0.05 bar on the permeate side at 900 °C. A high oxygen purity up to 99.9 vol % and high permeation rates of almost 10 cm3 (STP) cm-2 min-1 were obtained at 900 °C in a 150 h operation under the conditions of 0.05 bar on the oxygen side and oxygen-enriched air at 4 bar on the feed side.
UR - http://www.scopus.com/inward/record.url?scp=77957579311&partnerID=8YFLogxK
U2 - 10.1021/ie101311g
DO - 10.1021/ie101311g
M3 - Article
AN - SCOPUS:77957579311
VL - 49
SP - 9377
EP - 9384
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
SN - 0888-5885
IS - 19
ER -