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Recovery of Wasted Mechanical Energy from the Reduction of Natural Gas Pressure

2014; Elsevier BV; Volume: 69; Linguagem: Inglês

10.1016/j.proeng.2014.03.080

1877-7058

Andrei Iancu, Tudorache Valentin, Cristina Ţărean, Niculae Toma,

Iron and Steelmaking Processes

At the present time in Romania, the transition from the natural gas transportation system to the distribution system is done only thru the use of pressure reducing stations. Here the pressure drop is usually done by using throttle valves or pressure reducing valves, where the gas energy is spent without doing any work. In this article we propose the use of turbo-expanders in the pressure reducing stations, where the natural gas pressure from the transportation grid is high and needs to drop to lower levels to enter the distribution grids, in this way part of the energy consumed in the compression stations are recovered. The plans are made at this time for a pilot project at the pressure reducing station in the city of Onesti, Bacau County.