Study Of Purity And Recovery Of Carbon Dioxidefrom Binary Mixture Of Natural Gas Usingdifferent Adsorbents In Pressure Equalizedpressure Swing Adsorption

• Main Author: Chong, Ching Yang
• Format: Monograph
• Language: English
• Published: Universiti Sains Malaysia 2017
• Subjects: T Technology; TP155-156 Chemical engineering
• Online Access: http://eprints.usm.my/53292/1/Study%20Of%20Purity%20And%20Recovery%20Of%20Carbon%20Dioxidefrom%20Binary%20Mixture%20Of%20Natural%20Gas%20Usingdifferent%20Adsorbents%20In%20Pressure%20Equalizedpressure%20Swing%20Adsorption_Chong%20Ching%20Yang_K4_2017.pdf; http://eprints.usm.my/53292/

The separation effect of methane (CH4) and carbon dioxide (CO2) which is binary mixture of natural gas was investigated with characterization tests, breakthrough study and pressure swing adsorption (PSA) process. 2 types of adsorbent were studied and compared which were activated charcoal and zirconium-benzenedicarboxylate (UiO- 66). The characterization tests showed that UiO-66 has higher BET surface area and activated charcoal has higher fixed carbon content. For breakthrough study, the breakthrough curves were obtained under the condition of 1 bar and room temperature. The effects of both adsorbents and different inlet gas ratio were investigated. UiO-66 has larger adsorption capacity proven by its longer breakthrough time. Besides, PSA process had utilized 2-bed adsorption under the conditions of 3 bar and room temperature. However, separation effect of this mixture was not effective and commercially attractive because 2 types of adsorbent used were not suitable for separating this binary gas. Hence, the purity was not achieved but the recovery could be obtained because UiO-66 showed more than 90% recovery on CO2.