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Natural gas dehydration with TEG

Design an Natural gas dehydration unit with TEG as the absorbent.

The objective of the unit is to treat gas ( dehydrate ) to meet wter dewpoint of -10C at 6200 kpa

pressure.

Composition of the gas stream is as follows in dry basis. The stream is saturated with water.

And TEG used is

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Contactor data is :

Regenerator feed is heated to 105C in the lean / rich exchanger before entering the regenerator

Heat exchanger data is as follows :

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Regenerator operating conditions is

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There is some loss of TEG solvent . This loss is compensated by a make up pump, pumping about 2

USGPM of Lean TEG solvent.

The Regenerated TEG is cooled before entering the contactor and the heat exchanger data is as follows :

The gas testing facility consists of a testing unit, where TEG is removed and the remaining gas is checked

for water dew point. For this add a splitter with the following data

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With adjust function find out the water dew point of the stream.

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