Page 223 - Gas Purification 5E

Mechanical Design and Operation of Alkanolarnine Plants 209

Table 3-4
Recommended Maximum Process and Heat Medium Temperatures
I
Maximum Heat Medium 1
Temperature
Maximum Process L),OC (OF)
Amine Temp, OC (OF) Hot Oil Steam Reference
All 124 (255) - 149 (300) Dupart et al., 1993A
MEA 127 (260) - 149 (300) Dingman et al., 1966
MEA 121 (250) - 149 (300) COMOI-S, 1958
MEA 127 (260) - 141 (285) Ballard, 1966
MEA 116-127 e230 (<450) - Ballard, 1986A,
(240-260) 1986B
MEA - 188-227 - Carlson et al., 1952
(370440)
MEA 121 (250) - 135 (275) Hall and Polderman, 196(
Notes:
1. Fired heater reboilers should be designed to keep the tube wall temperature below 300°F which
limits the heatjlux to 6,500 to 8,500 Btu/fir)@2) (Manning and Thompson, 1991; Ballard, 1966).
Bacon (1987) recommends that thejred heater tube skin temperature be limited to a maximum of
350°F and heatjlux should be limited to 6,000 to 8,000 Bru/Fr)@2). bese constraints may requin
inlet ferrules to restrict heat jlux at the fired inlet.

Figure 3-10. Corrosion of carbon steel in an H2S-N2-MEA-H20 environment. (Froning
and Jones, 1958)