Simulation of kailashthila-1 gas processing plant

Abstract

Simulation of the Kailashtilla-I gas processing plant (Golapganj, Sylhet) has been carried out by the HYSIM process simulator. First, the simulation of the gas processing plant has been performed to carry out the material and energy balances of the plant based on the design parameters and then the performance of the plant has been studied using the operating data of different hours of a particular day. Kailashtilla-I is one of the oldest gas processing plant in Bangladesh. The existing gas processing plant at Kailashtilla-l consists of pressure reduction system and three flash separators to separate the gas and oil plus a gas dehydration and hydrocarbon recovery system consisting of a silica gel adsorption tower, regeneration and cooling towers and a condensate fractionation column. During the simulation of the plant, some changes have been made in the process flow diagram due to limitation of the HYSIM simulator, which cannot handle silica gel dehydration operation. The dehydration of the gas has been tried in two different ways, by cooling and by component splitter. The simulation has been performed based on the modified flow diagram with the design data. The gas compositions obtained for two different methods are almost similar. The plant has also been simulated using three sets of operating data from the log sheet. Due to the changes in the process flow diagram some small differences have appeared in material and energy balances.