NOVELTY - The system (10) has a heat exchanger jacket (2) connected to an outer wall of an auger housing (20) comprising a heated medium (4) for transferring heat of vaporization to a housing inner wall. A filter assembly (30) includes an inlet (34) connected to an auger housing outlet (24) for receiving pyrolytic vapor (14). The filter assembly filters a char component of a particulate material (12) from the vapor. A condenser includes an inlet (52) connected to an outlet of the filter assembly. The condenser thermally quenches the vapor such that a bio-oil product (13) is captured from the vapor.    USE - Process intensified fast mobile pyrolysis system for converting particulate materials i.e. wood particulate material, into bio-oil product (claimed) e.g. bio-oil renewable fuel and chemical, from a pyrolytic vapor reaction product.    ADVANTAGE - The system is simple in design and easy to construct. The system allows pyrolysis temperature to be widely varied within the system so as to achieve predetermined conversion efficiency. The system allows the heat to be exchanged from the heated medium to the housing walls, thus reducing overall amount of energy input into the system and improving stability of the bio-oil product. The filter assembly is jacketed for circulation of the heated medium around the filter assembly, thus thermally enhancing a filtration step and preventing premature condensation of the pyrolysis vapors in a filter cake, and hence improving the operability of the system.    DETAILED DESCRIPTION - The auger housing is a pyrolytic reactor auger housing. The filter assembly is a hot vapor filter (32). INDEPENDENT CLAIMS are also included for the following:    (1) a method for converting a particulate substrate into a bio-oil product    (2) a bio-oil product.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a process intensified fast mobile pyrolysis system.    Heat exchanger jacket (2)    Heated medium (4)    Process intensified fast mobile pyrolysis system (10)    Particulate material (12)    Bio-oil product (13)    Pyrolytic vapor (14)    Auger housing (20)    Auger housing outlet (24)    Filter assembly (30)    Hot vapor filter (32)    Inlet of filter assembly (34)    Inlet of condenser (52)