Black Smoke Assessment of Low Pressure Flare in South Pars Gas Field Off-Shore Platform Based on FLARENET Simulation and Flied Experiences

Abstract

Flaring is the combustion process used for the safe disposal of large quantities of waste gases and vapours in the petroleum and natural gas industries. Due to the fact that toxic and greenhouse gases are the main products of flaring which has devastating impact on environment and also ruin distinction of the operators of the plant specifically when accompany with black smoke, in the recent years, researchers and policy makers are focused on these issues by finding solutions and legislating protocols and environmental regulations. The present study revolved around potentials of smoking of Low Pressure (LP) flare system of South-Pars Phase 1 platform to throw some light on the exact operational and theoretical reasons and ultimately propose a practical solution in order to sort out the issue considering off-shore restrictions. In addition to investigating possibility of liquid carry over with waste gas to flare tip, the LP flare System is simulated for continuous scenario for evaluating composition of waste gas, moreover, the adequacy of knock out drum is assessed regarding its size and efficiency of separation of gas and liquid. The study showed that the low momentum of waste gas mixture is the main reason of smoking and injection of air as assistance creates effective mixing and smokeless flaring.