Titas Gas Case Study

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Localization of Fugitive Methane Emission from Natural Gas Distribution Network of Titas Gas for Reducing Environmental Risk Pradip C. Mandal*a,b, Syed M. Morshedb aDepartment of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia. bTitas Gas Transmission and Distribution Co. Ltd., 105, Kazi Nazrul Islam Avenue, Kawran Bazar, Dhaka-1215, Bangladesh. *pradip.mandal@petronas.com.my Titas Gas (TG), abbreviation of Titas Gas Transmission and Distribution Co. Ltd., the largest gas distribution companies of Bangladesh. Pipeline quality natural gas of TG contains approximately 96.12 % (mol/mol) methane. Fugitive emissions, an unintentional leak emitted from sealed surfaces, are the source of…show more content…
The values of KLeak are the indication of fugitive emission areas and the higher the KLeak value, the higher the gas releasing area. Fugitive natural gas emission can be reduced by seizing the high KLeak value components of the above ground facilities of TG. By reducing methane release to the atmosphere, TG can increase their revenues parallel to uphold their image to the international bodies. ACKNOWLEDGEMENT This work was supported by the Titas Gas Transmission and Distribution Company Limited for the project of Certified Emission Reductions (CERs) under Clean Development Mechanism (CDM). This work was also supported by the Universiti Teknologi PETRONAS. NOMENCLATURE Symbols Ad area of gas release point (m2) A area of cross-section of pipeline (m2) Cd empirical discharge coefficient, for subsonic of Reynolds number greater than 30,000, Cd = 0.61, for other situations Cd = 1 c speed of sound (m s-1) D pipeline diameter (m) f friction factor G mass flux (kgm-2s-1) KLeak leak constant (m2) Le equivalent length of pipeline (km) M molecular weight (kgkmol-1) P pressure (Pa) Q gas release rate (kg s-1) R constant of gas (Pa m3 mol-1 K-1) T temperature

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