Page 746 - Corrosion Engineering Principles and Practice
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696 C h a p t e r 1 5 H i g h - Te m p e r a t u r e C o r r o s i o n 697
4.0
3.5
3.0
2.5
Penetration (mm) 2.0
2
10 ppm H S
1.5 100 ppm H S
2
1 ppm H S
2
1.0
0.5
0.0
260 310 360 410 460 510
Temperature (°C)
FIGURE 15.23 Effect of temperature upon sulfidation corrosion of S41000
after one year in H -H S gases at 34 atma.
2 2
loss by sulfidation to less than 0.25 mm is shown in Table 15.8 for
several gas compositions of H S-H at a pressure of 34 atm, which is
2
2
similar to hydrotreating in an oil refinery. The maximum allowable
temperatures for alloys exposed to different gas pressures and
compositions can be evaluated with this information.
