||Preconditioning of Petroleum Residues for Subsequent Catalytic Processing and Manufacture of New Material: Petroleum Asphaltite. Compendium of Low- and Non-Waste Technology.
||Economic Commission for Europe (UN), Geneva (Switzerland). Working Party on Low and Non-Waste Technology and Re-Utilization and Recycling of Wastes.;Environmental Protection Agency, Washington, DC.
||21 Jul 81
Petroleum refining ;
Pollution control ;
Waste processing ;
Industrial wastes ;
Hazardous materials ;
Technology transfer ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
The process of hydrodesulfurization is developed so that it can be used after the de-asphalting of the residue with light gasoline. Heavy residual products of sulfur and high sulfur crude petroleum is de-asphalted with light gasoline (virgin gasoline) in standard extraction columns at a temperature of 140-190 deg. C and a dilution ratio of 3.51 to 51. The content of ash in the de-asphalted oil compared with the feed stock will be 2-4 times less and its coking tendency about 1.5-2 times less. In addition, 2-7 percent of the feed is in the form of a new product - petroleum asphaltite - containing 60-80 percent asphaltenes, 10-20 percent of resin and 10-20 percent of oil. The asphaltite is easily powdered and does not agglomerate in storage.