NOVELTY - An apparatus comprises a fluidized bed pyrolysis reactor (2); a combustion chamber (1); a lift tube (4) located within the chamber and in fluid communication with the reactor, and a nozzle located within the lift tube for educting a inert fluidizable media located within the reactor upwardly through the lift tube.    USE - Used for the pyrolysis of agricultural biomass, preferably the pyrolysis of low density agricultural biomass, e.g. straw, stalks, husks, chaff, bark, wood chips, and waste products from agricultural or other industries.    ADVANTAGE - The apparatus is mobile; increases heat transfer; and leads to more rapid pyrolysis. The apparatus is well suited to the pyrolysis of low density agricultural biomass. The introduction of the fluidizable media into the freeboard area of the fluidized bed prevents light materials from escaping the bed. The downward circulation of the fluidizable media through the bed also entrains the biomass and advantageously prevents segregation. The introduction of the biomass within the bed is useful in preventing the escape of materials and in causing rapid heat transfer to the biomass. The apparatus is compact and may be readily mounted on a trailer or other mobile vehicle for transportation to various farm locations. This obviates the need for transporting the biomass over large distances, which dramatically reduces the overall cost of the process. A condensable gaseous product may be produced during the pyrolysis process that has significant economic value when recovered. The condensable gaseous product may comprise a fuel oil product or other complex hydrocarbon oils, and theses condensable gaseous products can represent a valuable income stream for farmers.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the pyrolysis of agricultural biomass involving providing the above apparatus, creating heat through combustion of fuel in the combustion chamber, fluidizing inert fluidizable media using a low oxygen content gas, educting biomass upwardly through lift tubes, transferring the heat from combustion chamber into biomass in lift tube, exiting heated biomass and circulating heated biomass.    DESCRIPTION OF DRAWING(S) - The figure shows a perspective illustration of an interior of the apparatus.    combustion chamber (1)    pyrolysis reactor (2)    lift tube (4)    inlet (5)    outlet (6)    distribution plate (18)    holes (19)    air inlets. (22)