Im. Elgamal et Im. Elmansey, ASSESSMENT OF FLOW IMPROVERS BY PHOTO-ANALYSIS, Erdol und Kohle, Erdgas, Petrochemie vereinigt mit Brennstoff-Chemie, 46(11), 1993, pp. 418-423
Wax modification caused by flow improvers during crystal growth at low
temperatures in both Umbarka and Ras-Fanar Egyptian crudes was studie
d. The influence of type and concentration of wax crystal modifiers on
the morphology of the wax crystals using photoanalysis has been evalu
ated. The crystallization behaviour has also been affected by the dopi
ng temperature. A correlation between the pour point depression and th
e extent of wax modification was detected. Addition of asphaltene as a
natural pour point depressant affected wax morphology and configurati
on in Umbarka paraffinic crude.