Publications

Medco E&P Lematang (MEPL) attempts to optimize operation performance and chemical expenses by sourcing alternative H2S Adsorbent. PIMIT-B1 is high local content H2S licensed under ITB & PIM adsorbent. It is a new iron oxide based solid adsorbent for H2S removal. PIMIT-B1 was initially produced for the purpose of removal of H2S from natural gas feedstock in Ammonia Plants. Later, PIMIT-B1 was proposed to be applied in oil and gas upstream industries. This paper presents the results of performance evaluation of PIMIT-B1 in its use as H2S Scavenger adsorbent in Singa Central Processing Plant (CPP). PIMIT-B1 was placed in a tower that allows residue gas containing H2S from membrane unit to flow downward from the top section of the tower to its bottom section. For evaluation its performance, the sample gas was taken to measure H2S concentration in three sampling points along the tower, as well as inlet residue gas was taken on daily basis. These data are then processed to show the trends in which the H2S from residue gas are being adsorbed. These trends will show the breakthrough point, shape of breakthrough curve, and sulfur loading at any given time that are used to evaluate the performance of PIMIT-B1. From the data gathered until day 180 of adsorbent usage, with average flow of feed natural gas and average concentration of H2S 9.01MMscfd and 60.19ppmv respectively, the calculated breakthrough point of the bottom of the adsorbent bed is at the day 77. Prediction of the time when the bed becomes saturated based on the trends is day 266-269 and sulfur loading at the time is approximately 0.25. It was concluded that PIMIT-B1 can be implemented for further operation and be more economical in Singa CPP.