Water Separation from Overhead Vapor Stream of Condensate Stabilization Tower of South Pars Phases 9 and 10 with using Heat Integration

The input food to stabilization tower of gas distillations in Phases 9&10 of Southern Pars contains 2000 ppm water which it should be separated in three-phase separator from the organic phase and the light gases in accordance with the designing of this amount of water. But this separation has not been done because of the high output temperature from air cooler (Tower condenser) being in 55 ° C in summer and all of the water together with gas is sent gas the distillation unit. The aforementioned tower condenser is air cooler now. Because of the Southern Pars climate, it is not possible even in the cold seasons to decrease temperature of the overhead vapor flow to an amount that leads to separation of even some of water existing in overhead flow in three-phase separator. Thus, this is not an operational and logical method. On the other hand, using the direct cooling due to ΔT and the high rate of the tower overhead vapor stream is very expensive, which is not costeffective. In this study, the processing integration was used to overcome the problem of water separation in the distillation tower condenser and the proposing method is used in the process through simulation which leads to good results. According to the literature, the use of low temperature of food flow in the condenser can be effective, as the simulation results revealed that by using the overhead vapor stream, one can condense the overhead vapor to the temperature of 21/9 ° C. In this temperature, approximately 75% of water is separated in the three-phase separator located in the top of the tower which will have an influential effect on increasing the produced gas quality. Furthermore, as the result of integration, air cooler will be omitted from the process that the capital return from this way is 3942 dollars.

the process integration. The condensates distillation tower, air cooler, concomitant water, condenser