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Methane enrichment from natural gas by plate pressure swing adsorption (psa) using activated palm kernel shell adsorbent

Methane enrichment from natural gas by plate pressure swing adsorption (psa) using activated palm kernel shell adsorbent / Hazlein Syuhada Razak Malek

Abstract Gas asli adalah campuran hidrokarbon dengan metana (CH4) sebagai komponen utama. Ketulenan CH4 amat berguna dalam menghasilkan bahan bakar alternative yang berkos rendah. Walau bagaimanapun, industri gas asli di Malaysia kini menghadapi masalah di mana kandungan CO2 tinggi dalam gas asli dalam lingkungan 28% hingga 87%. Oleh itu, kajian ini bertujuan untuk mencari ketulenan optimum dan pemulihan CH4 dengan kemasukan kandungan gas asli sebanyak 30% CH4 dan CO2 70%. Plat penjerapan buaian tekanan (PSA) digunakan untuk mengkaji pengayaan CH4 dengan menggunakan karbon aktif yang diperbuat dari tempurung isirung palma teraktif (PKS) sebagai adsorben. Campuran CH4-CO2 melalui plat PSA berlaku pada tekanan 3 bar dalam suhu bilik. Ketulenan dan pemulihan CH4 bergantung pada tekanan dan masa penjerapan. Keadaan yang optimum untuk menghasilkan kesucian dan pemulihan CH4yang tertinggi berlaku pada 2 minit penjerapan. Ketulenan CH4 tertinggi yang dihasilkan adalah sebanyak 49.8% manakala pemulihan sebanyak 82.9%. Di samping itu, ketulenan dan pemulihan CO2 tertinggi adalah sebanyak 75.2% dan 53.7%. _______________________________________________________________________________________________________ Natural gas is a mixture of hydrocarbon with methane (CH4) as the major component. CH4 purification is useful in producing low cost alternative fuel which is environmentally friendly. Malaysia natural gas fields is currently facing an issue where CO2 content in the natural gas is high in the ranges of 28% to 87%. This study is aimed at finding the optimum purity and recovery of CH4 with natural gas content of 30% CH4 and 70% CO2. Plate Pressure Swing Adsorption (PSA) was used to study the CH4 enrichment by using Activated Palm Kernel Shell (PKS) adsorbent. The CH4-CO2 mixture flowing through the plate PSA at 3 bar in room temperature. The purity and recovery of CH4 strongly depended on the adsorption time and pressure. The optimum operating condition to produce the highest purity and recovery of CH4 through activated PKS adsorbent occurred at 2 minute adsorption. The highest CH4 purity and recovery were 49.8% and 82.9% respectively while the highest CO2 purity and recovery were 75.2% and 53.7%.

Contributor(s): Hazlein Syuhada Razak Malek - Author Primary Item Type: Final Year Project Identifiers: Accession Number : 875008082 Language: English Subject Keywords: hydrocarbon; methane; fuel First presented to the public: 6/1/2019 Original Publication Date: 6/26/2019 Previously Published By: Universiti Sains Malaysia Place Of Publication: School of Chemical Engineering Citation: Extents: Number of Pages - 61 License Grantor / Date Granted:   / ( View License ) Date Deposited 2019-06-26 17:58:25.228 Submitter: Mohd Jasnizam Mohd Salleh

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