Hydrates and Glycols - NTNU
Hydrates and Glycols - NTNU
Hydrates and Glycols - NTNU
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Energy consumption<br />
•Water must be evaporated!<br />
Water<br />
MEG<br />
–Example:<br />
• Feed: 300 m 3 /d 60 wt% MEG<br />
• Feed temp: 30°C, boiling temp, 120°C<br />
Heat capacity (kJ/ kg K) 4.16 3.1<br />
Heat of vaporization (kJ/kg) 2603 968<br />
–Answer:<br />
• MEG<br />
• H 2 O<br />
180 m 3 /d=180 000 kg/d<br />
120 m 3 /d=120 000 kg/d<br />
–Heating from 30 to 120°C<br />
• MEG 180 000*3.10*90=5.02*10 7 kJ/d = 580 kW<br />
• H 2 O 120 000*4.16*90=4.49*10 7 kJ/d = 520 kW 1 100 kW<br />
–Vaporization<br />
• Not all water is evaporated (only to get 90wt% MEG)<br />
• H 2 O 90 000*2603=3.12*10 8 kJ/d = 2711 kW 2 700 kW 3.8 MW<br />
Classification: Internal 2010-08-25
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