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Improvement of energy utilization in natural gas dehydration plant through reducing electricity and steam demand

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As you can see here, the feed at the beginning enters three phase separator. Then the light hydrocarbon stream after injection of ethylene glycol through inline mixer. So a two phase flow is introduced to a stabilizer. This is basically a reboiled absorber tower. After absorption operation within tower the dry and heavy hydrocarbons from bottom is going to a pump and light and wet stream goes from upside to a compressor. Cause of pressurizing they get heated. And pump and compressor discharge shall pass toward two air cooler heat exchanger. 4

SEEE: S: EE

So according to the figure you can see the sources of energy consumption in this unit: steam for reboiler and power for motorized equipments 5

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(9)(17)(18)(13)(16)(14)(7) (1) (2)

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4/08 25/8(kWh/tNG )5/5(kWh/tNG ) 216/56 (kWh/tNG )137/25(kWh/tNG )

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(USD) : () :( ) :1046927/05132/5BEM

(USD) : () :( ) :996525/65140BEM

E- 101

E- 100

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17680 25600

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SET 2011

Improvement of energy utilization in natural gas dehydration plant through reducing electricity and steam demand

100 100 101 100 101 100 T approachT approach

2N Newton-Raphson

TACTmin

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TAC(T) G.A . :

( ) ( ) ( ) (kg/h)1500940512 (MJ/h)1721925/231066/5 (m2)---27 + 33/520/6 + 38 (kW)---272/5403/8

62% 35% 11% 53% 128/5 15

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1390

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