s application ser no 560 520 filed dec 12 1983 application_number US 30799189 A description sewage sludge varies significantly from community to community across the country but digested sludge usually contains the following components oils 2 to 5 asphaltenes 2 to 4 organic toluene insolubles 25 to 40 ash 7 to 15 and water 40 to 50 an important aspect of the present invention is that the sewage sludge does not have to be dried from the above values prior to chemical reformation by pyrolysis viewing fig1 where the present system is shown schematically mixer 39 mixes undried sewage sludge with an oil carrier as necessary which may be essentially recirculated yield produced by the system of course a system start up carrier oil may be provided for initial start up mechanical exchanger 40 both adds and withdraws equal volumes of the sewage sludge carrier oil to and from reactor 45 taking fresh material from mixer 29 and conveying such material to reactor 45 in continuous but pulsating fashion the accumulator 41 reduces the transient pressures produced by the pulsating action of the exchanger 40 pressure up device 43 is a piston and cylinder device that regulates input pressure to reactor 45 at a desired level typically less than 2000 psi in the reactor 45 the sewage sludge carrier oil mixture is typically heated to approximately 840 to 880 degrees f to produce the pyrolytic conversion of the organic constituents in the sewage sludge to oil and gas apparently by hydrogenation in addition to the further reformation by hydrogenation of the carrier oil in the reactor 45 the water.