A Study on H2S Removal of Crude Oil by Using Some New Synthetic Scavengers and Optimization of Several Effective Parameters in Crude Oil Sweetening

In response to the quality upgrading of producing sweet crude oil for export، four different types of chemical scavengers have been formulated and produced in laboratory and scaled up to bench scale. Cold stripping، affective technical reducing، and removal parameters of the process have been studied on four different sour crude oils by each formulated scavenger. Experimental design was performed to optimize effective parameters by using Minitab-14 software package. Main parameters such as concentration، temperature، and effective time were studied. Under optimal values of 1100 ppm scavenger concentration، 50 °C temperature، and 15 minutes contact time، the H2S content was significantly removed from 950 ppm to less than 15 ppm for an Iranian light sour crude oil.