UOP 629-08

This 4-part procedure is for the sampling of liquid hydrogen fluoride (HF) streams and the analysis of these streams for acidity, water content and acid-soluble oil. The method is applicable to fresh acid and alkylation process system acid. The acid-soluble oil determination is also applicable to regenerator bottoms samples. However, acidity and water determinations on regenerator bottoms samples must be conducted according to UOP Methods 379 and 382, respectively. The Appendix provides information about an online instrumental option that could significantly reduce the number of samples that are brought into the lab for analysis.