Flare gas recovery at an LNG plant GL1/Z -Arzew

Abstract

Abstract Natural gas is the fastest growing source of fossil energy since the 1970s. Due to its economic and environmental benefits, natural gas is becoming more attractive to many countries every day. The properties of this product, as for example, the low combustion range characterizing it, make it one of the most used reliable sources known to date. Currently, it is the second most used energy source after oil. The GL1/Z plant -Arzew -SONATRACH Company is designed for the liquefaction of natural gas, which is an essential way of transporting gas over long distances. This liquefaction (at -160 ° C) is obtained by successive cooling through compressed refrigerants and then relaxed between two pressure stages. This liquefaction technique consumes a lot of gas considered as internal consumption. In addition to this loss, there is a certain amount of gas that is flared during startup which accounts for about 2/3 of the total amount of flared gas. The reduction of flared gases is important to reduce carbon emissions and rationally use natural gas. In this work we simulate by ASPEN-HYSYS software a three method of gas flare recovery such as power electric generation, LPG (Liquid Petroleum Gas ), and GTL technology (Gas to liquids) to evaluate natural gas resources of GL1/Z plant (SONATRACH Industry –Algeria).