Page 55 - Gas Purification 5E

Alkanolamines for Hvdrogen Siiljide and Carbon Dioxide Removal 45

? I

““?I’

Figure 2-3. High-pressure gas-treating plant using Diglycolamine solution (Fluor
Econamine process). Courtesy of Fluor Daniel

HO HO
‘ \I I
\ II
H ( 32 cc I I
I I / I I\ II \ II
HO-C-C-N N-H N-CC-OH
I I \ I I/ It ,/ I I
H 2C cc
/ II /I I
HO HO
Monoethanolamine Diethanolamine Triethanolamine
HO
I I
-y . I I\
-CC - OH \I I H
cc
II
NH
-6 ’ cc I I I I \
I I/
II H
/I I
-cC-oH HO
II
Diisopropanolamine Methyldiethanolamine 2 (2- aminoethoxy) ethanol
Figure 2-4. Structural formulas for alkanolamines used in gas treating.