Abstract: A pyrolyser including (i) a pyrolysis chamber defining an interior compartment having an upper portion and a lower portion, wherein the pyrolysis chamber includes a feed inlet, a product outlet, an exhaust gas outlet, and an operational length comprising a linear distance from the feed inlet to the product outlet; (ii) a trough located in the lower portion of the interior compartment and extending through the pyrolysis chamber along the operational length of the pyrolysis chamber; and (iii) a material handling system comprising an paddle auger located within the trough and configured to convey biomass from the feed inlet towards the product outlet; wherein the paddle auger comprises an auger shaft, a plurality of sets of paddles directly or indirectly connected to the auger shaft, and a plurality of flights interconnecting the plurality of paddles is provided.