SECTION I(b)
11. “Schaumfahrweise” Process-I.G. Farben.
(b) Products.
The high olefine content makes the product suitable for chemical synthesis. The C3-C4 fraction may be polymerized.
The gasoline can be refined for removal of oxygenated products in the conventional manner of bauxite.
| Octane rating of treated gasoline: | 70 (Research) for 250° temperature |
| 75 (Research) for 275° Synthesis. |
The removal of oxygenated compounds is an important step if the fractions are to be used for polymerization (with AlCl3) or for the Oxo process.
The middle oil has a cetane number of 70 and may be used directly, but it is of course the preferred feed for lube oil synthesis and the Oxo reaction.
The wax may be cracked to give a 70% yield of olefinic middle oil. before it can be used for oxidation it is necessary to hydrogenate the olefins and at the same time remove the higher alcohols and esters.
About 70% of the total wax is hard wax with a melting point over 80-90° C.