Upgrading sub-quality natural gas by dual reflux-pressure swing adsorption using activated carbon and ionic liquidic zeolite

2020 ◽  
Vol 392 ◽  
pp. 123753 ◽  
Author(s):  
Roman Weh ◽  
Gongkui Xiao ◽  
Md Ashraful Islam ◽  
Eric F. May
Keyword(s):  
Activated Carbon ◽  
Natural Gas ◽  
Pressure Swing Adsorption ◽  
Pressure Swing

Application analysis of layered pressure swing adsorption method for offshore floating natural gas purification

2021 ◽  
pp. 1-11
Author(s):  
Wensheng Cao ◽  
Jianzhuang Xu ◽  
Christoph Bluth
Keyword(s):  
Activated Carbon ◽  
Natural Gas ◽  
Molecular Sieve ◽  
Pressure Swing Adsorption ◽  
Gas Production ◽  
Gas Purification ◽  
Mixed Gas ◽  
Adsorption Method ◽  
Natural Gas Purification ◽  
Pressure Swing

In view of the particularity of offshore operations, a new layered pressure swing adsorption (PSA) method for natural gas purification was proposed. CH4 is enriched in the three-component CH4/CO2/N2 crude mixed gas. The pressure swing adsorption process is based on the traditional method. The adsorption bed is divided into two layers, which are the first layer with activated carbon as the adsorbent to remove CO2 impurities, and the second layer with molecular sieve as adsorbent to remove N2 impurities. The process of PSA was simulated by Aspen Adsorption software. The simulation results show that after the process of double layered PSA, the purity of the product gas CH4 reached 98.7%, and the recovery rate of gas production was 89%. The concentration of CO2 was successfully reduced to 0.23% in the activated carbon layer, and the concentration of N2 was reduced to 1.2% in the molecular sieve layer of the first Tower.

Upgrading pipeline-quality natural gas to liquefied-quality via pressure swing adsorption using MIL-101(Cr) as adsorbent to remove CO2 and H2S from the gas

Fuel ◽  
2020 ◽  
Vol 281 ◽  
pp. 118985
Author(s):  
Phani Brahma Somayajulu Rallapalli ◽  
Kanghee Cho ◽  
Sun Hyung Kim ◽  
Jong-Nam Kim ◽  
Hyung Chul Yoon
Keyword(s):  
Natural Gas ◽  
Pressure Swing Adsorption ◽  
Pressure Swing

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

2013 ◽  
Vol 773 ◽  
pp. 907-911
Author(s):  
Shao Bo Ouyang ◽  
Shao Ping Xu ◽  
Ning Song
Keyword(s):  
Activated Carbon ◽  
Flow Rate ◽  
Gas Turbines ◽  
Pressure Swing Adsorption ◽  
Methane Concentration ◽  
Activated Carbons ◽  
Vacuum Pressure ◽  
Bet Surface Area ◽  
Vacuum Pressure Swing Adsorption ◽  
Pressure Swing

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. The influence of VPSA parameters such as feed flow rate, effluent flow rate and adsorption time on the performance of the VAM enrichment were examined. The results showed the methane concentration in the simulative VA gas could be enriched by VPSA from 0.52 vol.% to 1.51 vol.% with a methane recovery of 96.3 % at 25 °C and 200 kPa. The methane concentration in effluent gas was reduced to below 200 ppm. The as-prepared activated carbon could be used in the VAM enrichment by VPSA for lean-burn gas turbines.

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