Energy efficiency improvement in pipeline transportation: focus on waste heat recovery, pumping and compression efficiency and site data management
Proceedings Publication Date
The current energy market is directly influenced by different dynamics, and efficiency increase is one of the most important. The natural gas and oil pipeline segments of the industry face this challenge and recognize more and more the need for improving energy management, while reducing emissions. Pipeline stations present some efficiency improvement and emission reduction opportunities. The first opportunity is waste heat recovery in pipeline stations using simple cycle gas turbines as drivers. In fact, the simple cycle gas turbine efficiency can be augmented by 30 – 40% and even up to more than 50% through waste heat recovery. This article introduces the Organic Rankine Cycle (ORC) developed by GE, referred to as ORegenTM, a waste heat recovery system from gas turbine exhaust. This system is capable of recovering waste heat from gas turbine exhaust, operating at variable loads from 50 to 100% in mechanical drive applications, or located in areas where water is absent or scarce, overcoming the limitations of the traditional water/steam Rankine cycle when applied to mechanical drive gas turbine exhaust. Another opportunity for pipeline stations is to work on the efficiency of individual rotating machines through conversions, modifications and upgrades, gas turbines with enhancements in emission control and partial load efficiency, and centrifugal compressors and pumps with more efficient stages.