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UOP 211 PDF
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Caustic Solutions Analysis – Liberation Method
| Published by | Publication Date | Number of Pages |
| UOP | 01/01/1979 | 4 |
UOP 211 – Caustic Solutions Analysis – Liberation Method
This method is for plant control analysis of used refinery caustic solutions. It is especially useful for solutions containing Merox catalyst used for the extraction or sweetening of mercaptans. Two characteristics of a used caustic solution are determined; namely, total alkalinity and the caustic consumed by the presence of mercaptan. Free sulfur and polysulfide sulfur may interfere with the test. Hydrogen sulfide does not interfere.
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