الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Dehydration , or water vapor removal , is accomplished by reducing the
inlet water dew point to the outlet dew point temperature which will contain a
specified amount of water and recommended from pipeline specification.
Injection for the hygroscopic liquid is another technique for the dehydration
of the wet gas to reach the sales gas quality and pipeline specification as the
well known method is the absorption process in the tower , so this Thesis
study the both processes and applied both for the same case ( KHALDA
PROCESS ) by using the simulation software HYSYS as shown in appendix
(2) with the peng-robinson ( ver. 8.0 ) as fluid package then find the
advantage & disadvantage of each process.
from studying found that Injection process required higher absorbent flow
rate to achieve same target of dryness for the outlet of dry gas in case of
absorption process for both sides with and without stripping gas,
But while using same absorbent flow rates for both processes found that there
is very small difference in dehydration performance for both processes about
15-20 ppm water conc. difference In outlet sales gas, however, injection
process has higher outlet water content but in acceptable range so can be
applied and this can be neglected as injection process For both cases with &
without stripping gas usage can achieve lower absorbent losses than
absorption process over all flow rates of TEG & stripping gas . Beside that
reduce the amount of the HCS emissions.
Also the absorption process required higher pressure in the tower to avoid
the trays troubleshooting in the absorber as flooding , dumping and foaming
so more hydrocarbons dissolved that required more heat duty through reboiler
for releasing as indicated in studies beside that during releasing hydrocarbons
through flashing and regeneration led to higher losses that also can be
observed during studies of absorbent losses.
Another advantage of the injection process than absorption process is that
it is more compact as require less area than absorption process and this
advantage has the most important in off-shore plants that required compact
process, easy for installation , maintenance & operation as avoided the trays
troubleshooting in the absorber as flooding , dumping and foaming , also has
larger turndown ratio and higher flexibility with the high viscous liquid.