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.
