Pyrolysis and Polymerization of Gaseous Paraffins and Olefins

Abstract

Polymerization of Gaseous Paraffins and Olefins oK NOWLEDGE of the reactions involved in the pyrolytic decomposition and polymerization of gaseous hydrocarbons isfundamental for an understanding of the means by which these hydrocarbons may be converted to higher boiling liquids.The literature dealing with the thermal decomposition of paraffins (and olefins) is extensive and has been reviewed by Egloff, Schaad, and Lowry (3).The literature dealing with the polymerization of olefins at superatmospheric pressure is meager, but mention should be made of the early work of Ipatieff (4), and the later investigations of Stanley ( 7), Nash, Stanley, and Bowen (5), Pease (6), Waterman and Tulleners (8), and the very informative articles -by Dunstan, Hague, and

Pressure Pyrolysis of Gaseous Paraffin hydrocarbons

“…3. Á natural gas fraction containing 2.5 per cent "air plus methane," 5.7 per cent propane, 50.5 per cent w-butane, 13.0 per cent isobutane, and 28.3 per cent pentanes, was pyrolyzed at 550°C. and at pressures from 17.5 to 70 kg.…”

The Thermal Stabilitiy of Paraffinic and Olefinic Hydrocarbons.

“…A comparison of the stabilities of ethylene and propene at pressures from 500 to 3000 lbs. per square inch showed (25) that ethylene was converted to liquids to a greater extent than propene when treated under the same conditions. This conclusion is opposite to the ones above, and it is difficult to explain except by differences in experimental method or pressure.…”

The Working Up of Lower, Normally Gaseous Paraffins and Mono-Olefins to Give Carburettor Fuels

“…The thermal polymerization of pure olefins has been investigated systematically by SULLIVAN, RUTHRUEF, and KUENTZEL, in particular [13]. They determined the best conditions for obtaining the maximum formation of polymerizates in the gasoline boiling range.…”

“…72. Polymerization of ethylene and propene at 35 atm according to SULLIVAN, RUTHBUFF, and KUENTZEL [13] 1. [75][76][77][78][79][80].…”