Minimização de consumo de Tri-etileno-glicol no processo de desidratação de gás natural na central de processamento de Temane

Abstract

This report documents the Author’s internship experience with SASOL Petroleum Temane Limited in the central processing facility of Temane, during the period June 21, 2021 through September 28, 2021. It is intended to establish that this experience meets the objectives of the degree in Chemical Engineering internship. Following an examination of the internship objectives and integration within the production activities undertaken in the central processing facility, a project to minimize Tri-ethylene-glycol (TEG) losses was assigned, under wish most of the activities undertaken during the internship fall in. The Temane Gas processing chain includes operations such as phase separation, compression, dehydration, hydrocarbons dew point control (refrigeration) and treatment of liquids. Gaseous absorption is the process employed in the dehydration of natural gas, where TEG is used as the absorbent liquid, however there are records of excessive TEG losses, which were investigated through data analysis, operational testing and flooding level estimates of the absorption columns. It was found through data analysis and calculations of the flooding point that the operational flow is higher than the flooding flow and, on the other hand, it was verified through the operational test that the system presents minimum consumption of TEG when the supplied gas is at 30°C if the system pressure is 5500 Kpag or less.