Results 231 to 240 of about 9,573 (261)

Novel Vacuum-Pressure Swing Adsorption Process for PEMFC Complaint Bio-Hydrogen Production

2022
The demand for low-carbon energy carriers to achieve a sustainable future has made hydrogen recovery from biogenic sources increasingly attractive. The current work reports the preliminary results of a lab-scale vacuum pressure swing adsorption (VPSA) system developed and integrated to a fixed-bed oxy-steam gasification unit to generate pure hydrogen ...
Singh, A., Shivapuji, A.M., Dasappa, S.
openaire   +1 more source

Activated Carbons for Ventilation Air Methane Enrichment by Vacuum Pressure Swing Adsorption

Advanced Materials Research, 2013
A coconut shell based activated carbon with BET surface area of 795 m2/g, micropore volume 0.37 mL/g and total pore volume 0.44 mL/g was prepared. With this activated carbon as adsorbent, the ventilation air methane (VAM) enrichment by vacuum pressure swing adsorption (VPSA) was investigated.
Shao Bo Ouyang, Shao Ping Xu, Ning Song
openaire   +1 more source

Removal of Carbon Dioxide from Natural Gas by Vacuum Pressure Swing Adsorption

Energy & Fuels, 2006
A vacuum pressure swing adsorption (VSA-PSA) process is studied for the removal of carbon dioxide in a contaminated stream of natural gas to achieve fuel grade methane. The adsorbent used was zeolite 13X (CECA) where CO2 is strongly adsorbed.
Simone Cavenati, Carlos A. Grande, Alírio E. Rodrigues   +2 more
openaire   +1 more source

Hybrid membrane-vacuum pressure swing adsorption: low-cost technology for simultaneous biomethane and carbon dioxide production from biogas

Bioresource Technology
Biogas production and upgrading allow to reduce methane and carbon dioxide emission through simultaneous production of biomethane and CO2. Membrane and vacuum pressure swing adsorption technologies can achieve this goal in a single unit, but currently these technologies have a high upgrading costs.
Mohammad Azadi Tabar, Hafez Maghsoudi, Joeri F.M. Denayer   +2 more
openaire   +3 more sources

Aspen adsorption simulation for the effects of purge flow rate and vacuum pressure in vacuum pressure swing adsorption

Materials Today: Proceedings, 2022
Sirawich Punpee, Chantaraporn Phalakornkule   +1 more
openaire   +1 more source

Effect of bed void volume on pressure vacuum swing adsorption for air separation

Korean Journal of Chemical Engineering, 2013
The effects of a poorly packed bed on the pressure vacuum swing adsorption (PVSA) process were in- vestigated experimentally and theoretically by a five-step two-bed PVSA system. At first, the adsorption dynamics of a zeolite LiX bed for air separation (78 mol% N2, 21 mol% O2 and 1 mol% Ar) was studied at various adsorption pressures and flow rates. In
Yo Han Kim, Dong Geun Lee, Dong Kyu Moon, Sang-Hoon Byeon, Hyung Woong Ahn, Chang Ha Lee   +5 more
openaire   +1 more source

Multi-bed Vacuum Pressure Swing Adsorption for carbon dioxide capture from flue gas

Separation and Purification Technology, 2011
Abstract A detailed framework for simulation of VPSA units is presented. Within this framework, a detailed description of the adsorbent column is provided and linked with other ancillary parts of the unit. This modeling strategy is particularly suitable to demonstrate how the entire unit works and to identify operating constraints that may be caused ...
Zhen Liu, Carlos A. Grande, Ping Li, Jianguo Yu, Alirio E. Rodrigues   +4 more
openaire   +1 more source

Comparative performance of industrial-scale oxygen production by pressure swing adsorption and vacuum pressure swing adsorption under plateau environment

Adsorption, 2023
Xianqiang Zhu, Yuan Sun, Shidong Zhou, Fangrui Feng, Jiahui Liu, Jiayun Ma, Shuhui Li, Zehao Niu   +7 more
openaire   +1 more source

Enhanced Computational Approach for Simulation and Optimisation of Vacuum (Pressure) Swing Adsorption

Systems and Control Transactions
Vacuum (pressure) swing adsorption (V(P)SA) has received considerable attention in the past decades. Existing studies typically estimate vacuum pump energy consumption using an approximate constant energy efficiency or an empirical energy efficiency correlation, leading to inaccurate representation of realistic vacuum pump performance. In this paper an
Yangyanbing Liao, Andrew Wright, Jie Li
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OZONE ENRICHMENT USING VACUUM PRESSURE SWING ADSORPTION

2020
Pokhrel, Ramesh, Raunak Pandey
openaire   +1 more source