| 摘要 |
<p>1421803 Transporting hydrocarbon oils MARATHON OIL CO 24 Aug 1973 [18 Sept 1972] 40230/73 Heading C5E Hydrocarbon mixtures are rendered more transportable in pipelines and tanks by fractionating into a relatively low pour point fraction and a relatively high pour point fraction, congealing at least portion of the relatively high pour point fraction and slurrying the congealed material in the relatively low pour point fraction. Suitable feed mixtures are waxy crudes containing 1-80 wt. per cent wax and having pour points of -10‹ to 200‹ F., shale oil, tar sand oil, fuel oil and gas oil. The feed is preferably fractionated by distillation to separate 1-80 wt. per cent as the relatively high pour point fraction. The congealing can be performed by spraying the fraction into air and the prills formed, generally 0À05-20 mm. diameter, can be coated with CaCO 3 , synthetic resin, bentonite, kaolin or Fullers earth. Up to 50% of the relatively high pour point fraction can be cracked before congealing. 0À0001-20 volume per cent of sorbitan monolaurate or sodium petroleum sulphonate can be added to the high pour point fraction before congealing. Carbon dioxide, a drag reducing agent or diluent gasoline can be added to the slurry.</p> |
