Page 189 - Petroleum and Gas Field Processing

(c) If the heater fire tube is made of 6 in. pipe, determine the length

of the fire tube assuming a mean temperature difference of 130 F and an
2
overall heat transfer coefficient of 2000 BTU/h ft F.
(d) What would you suggest to reduce the retention time.
6. Determine the diameter and height of the coalescing section of a
vertical heater treater and the required heat duty, given the following
data:

Oil rate: 10,000 BPD (specific gravity ¼ 0.875,

C p ¼ 0.5 BTU/lb F)
Water content: 10% by volume (specific gravity ¼ 1.04,
C p ¼ 1.1 BTU/lb F)

Intel temperature: 90 F
Treating temperature: 160 F

Retention time: 20 min

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