Results 191 to 200 of about 10,276 (239)

Vacuum Pressure Swing Adsorption to Produce Polymer-Grade Propylene

Separation Science and Technology, 2010
We have evaluated the Vacuum Pressure Swing Adsorption (VPSA) technology to separate propane–propylene streams to produce polymer-grade propylene. Zeolite 4A is used as kinetic adsorbent since propylene diffuses much faster than propane. A single VPSA process is able to produce propylene with purity higher than 99.6%.
Carlos A. Grande, Frank Poplow, Alírio E. Rodrigues   +2 more
openaire   +1 more source

Optimization of Pressure Swing Adsorption and Fractionated Vacuum Pressure Swing Adsorption Processes for CO₂ Capture

Industrial & Engineering Chemistry Research, 2005
This work focuses on the optimization of cyclic adsorption processes to improve the performance of CO2 capture from flue gas, consisting of nitrogen and carbon dioxide. The adopted processes are the PSA (pressure swing adsorption) process and the FVPSA (fractionated vacuum pressure swing adsorption) process, modified from the FVSA (fractionated vacuum ...
Daeho Ko, Ranjani Siriwardane, Lorenz T. Biegler   +2 more
openaire   +1 more source

Vacuum Swing Adsorption for Propylene/Propane Separation with 4A Zeolite

Industrial & Engineering Chemistry Research, 2001
A vacuum swing adsorption process using 4A zeolite pellets with five steps was designed to split an equimolar mixture of propylene/propane. The equimolar feed of C3 is diluted to 50% with nitrogen at 5 bar and 423 K, and the product is obtained when the total pressure is lowered to 0.1 bar. After 15 cycles, cyclic steady-state conditions are reached, a
Francisco A. Da Silva, Alírio E. Rodrigues   +1 more
openaire   +1 more source

Industrial Scale Propylene/Propane Separation Using Pressure Vacuum Swing Adsorption

Industrial & Engineering Chemistry Research, 2018
Conventional propylene/propane separation via distillation is capital- and energy-intensive. Pressure vacuum swing adsorption (PVSA) is a potential low-cost alternative to C3 distillation.
Wee Chong Kuah, Surya Effendy, Shamsuzzaman Farooq   +2 more
openaire   +1 more source

Propylene/propane separation by vacuum swing adsorption using 13X zeolite

AIChE Journal, 2001
AbstractA vacuum swing adsorption process using 13X zeolite pellets with five steps was designed to split an equimolar mixture of propylene/propane: pressurization with feed; high‐pressure feed; high‐pressure purge with product; cocurrent blowdown; and counter‐current vacuum blowdown, where the enriched propylene product is withdrawn.
Francisco A. Da Silva, Alírio E. Rodrigues   +1 more
openaire   +1 more source

Hazardous dichloromethane recovery in combined temperature and vacuum pressure swing adsorption process

Journal of Hazardous Materials, 2011
Organic vapors emitted from solvents used in chemical and pharmaceutical processes, or from hydrocarbon fuel storage stations at oil terminals, can be efficiently captured by adsorption onto activated carbon beds. To recover vapors after the adsorption step, two modes of regeneration were selected and could be possibly combined: thermal desorption by ...
Ramalingam, Shivaji Ganesan, Saussac, Jerôme, Pre, Pascaline, Giraudet, Sylvain, Le Coq, Laurence, Le Cloirec, Pierre, Nicolas, Serge, Baudouin, Olivier, Déchelotte, Stéphane, Medevielle, Alice   +9 more
openaire   +4 more sources

The effect of nitrogen adsorption on vacuum swing adsorption based post-combustion CO2 capture

International Journal of Greenhouse Gas Control, 2018
The importance of nitrogen adsorption, an often neglected topic, on post-combustion CO2 capture using vacuum swing adsorption is evaluated. Several hypothetical adsorbents are generated by parametrizing their affinities using the Langmuir adsorption isotherm. By performing detailed process simulation and optimization, it is found that N2 affinity has a
Rajagopalan, A.K., Rajendran, A.
openaire   +2 more sources

Study of pressure/vacuum swing adsorption processes for CO₂ capture

2021
This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
openaire   +1 more source

New 13X zeolite for propylene/propane separation by vacuum swing adsorption

Separation and Purification Technology, 2013
Abstract Adsorption equilibrium isotherms for propane and propylene on a new 13X zeolite from CECA were measured at three temperatures (323, 373, 423 K) up to 5 bar. Maximum capacities of 3.47 and 3.08 mol/kg were found for propylene and propane, respectively. These values are significantly higher than those reported in literature.
M. C. Campo, A. M. Ribeiro, A. Ferreira, J. C. Santos, C. Lutz, J. M. Loureiro, A. E. Rodrigues   +6 more
openaire   +2 more sources

Vacuum Swing Adsorption Process for Oxygen Production–-A Historical Perspective

Separation Science and Technology, 1996
Adsorbent and cycle developments for the last 25 years have resulted in the advancement of vacuum swing adsorption processes for the production of oxygen from air, and in this review are traced and critically examined. The key criteria in the past developments and for future improvements are identified.
openaire   +1 more source