Instructor: Dr. Istadi (http://tekim.undip.ac.id/staf/istadi ) Email: istadi ...
Instructor: Dr. Istadi (http://tekim.undip.ac.id/staf/istadi ) Email: istadi ...
Instructor: Dr. Istadi (http://tekim.undip.ac.id/staf/istadi ) Email: istadi ...
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Comparison of Physical Solvents<br />
� Purisol has the highest cap<strong>ac</strong>ity for absorption of <strong>ac</strong><strong>id</strong><br />
gases and it is the most selective; however, it is the most<br />
volatile.<br />
� Selexol is more selective than Fluor solvent, but it<br />
dissolves propane.<br />
� All solvents exhibit significant affinity for heavy paraffins,<br />
aromatics, and water.<br />
� Water absorption make them good dessicants.<br />
� The loading cap<strong>ac</strong>ity of physical solvent is much higher<br />
than amines.<br />
� From Figure: At partial pressure of H 2S 200 psia, the<br />
loading (mol H 2S/gal solvent) of MEA (20% solution) is<br />
about 11.5, and at the same time, sulfolane (physical<br />
solvent) is about 18 and sulfinol (which is a mixed<br />
solvent) is about 19.
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