Study on a new mode of waste heat utilization and purification of FPSO crude oil generator flue gas

Author of the article:WU Qilin, XIAO Kailun, LIU Lei, GUO Heng, MIAO Jian

Author's Workplace：CNOOC China Ltd., Shenzhen Branch, Shenzhen, Guangdong, 518054, China

Key Words：Generator flue gas; Waste heat recovery; Inert gas; Flue gas purification; New mode

Abstract：For most FPSO (Floating Production Storage and Offloading) crude oil generators, the waste heat and flue gas are not recycled and reused, and will cause environmental pollution after the flue gas is discharged directly. Based on the analysis of the status and demand of most FPSOs in China, a new mode of waste heat utilization and purification of flue gas from crude oil generator is designed. In this new mode, the waste heat of the crude oil generator medium temperature flue gas is recovered to provide heat for the heating medium system. Then the flue gas is introduced into inert gas system as inert seal gas in the oil tanks, and the remaining flue gas is discharged into the atmosphere after purification. This paper takes HYSY 118 FPSO as an example to carry out simulation application and theoretical analysis of the calorific value. The new mode in the simulation application has a good effect, and the economic and environmental benefits created for FPSO are very considerable, indicating that the new mode of waste heat utilization and purification of FPSO crude oil generator flue gas is completely feasible in theory and practice, and has great value for application and promotion.