| 摘要 |
<p>The agglomeration of congealed wax particles slurried in a liquid hydrocarbon carrier, especially during the transportation thereof, and the precipitation of wax with the hydrocarbon liquid are inhibited by incorporating into the slurry about 1-10,000 ppm of a hydrocarbon soluble polymer having a molecular weight of most preferably at least about 10,000. The slurry can be obtained by fractionating a hydrocarbon mixture, e.g. "waxy" crude oil, into at least a relatively high pour point fraction and a relatively low pour point fraction, congealing (preferably by prilling or dispersing in water) the high pour point fraction to obtain the wax particle, and thereafter slurrying at least a portion of the congealed fraction with preferably the low pour point fraction. The slurry is preferably transported in a pipeline. Examples of polymers include polyisobutylene, ethylene propylene copolymers, polysaccharides, etc.</p> |
