NOVELTY - The method involves preheating a reaction chamber (5) by introduction of partially combusted gas. Pre-heated oxygen-depleted gas is introduced into the reaction chamber to provide a circumferentially directed flow of fluid. A carbonaceous feedstock is introduced into the preheated reaction chamber. The carbonaceous feedstock is circulated rapidly about an axis of the reaction chamber in a toroidal band and heated by the flow of fluid. The carbonaceous feedstock is gasified in a toroidal bed reactor to produce syngas.    USE - Method for gasification of a carbonaceous feedstock i.e. biomass feedstock (claimed), to produce syngas in a toroidal bed reactor. Can also be used as a coal feedstock, a petroleum feedstock and a biofuel feedstock.    ADVANTAGE - The method enables providing the toroidal bed reactor to certain temperature quickly by using a combustion heater. The method is running a heat of the gasification in combination with a heat exchanger, thus maintaining the process temperature without requiring a use of the combustion heater. The method enables providing the reactor to operating temperature in quick and safe manner, thus allowing for energy efficient on-demand carbonaceous feedstock processing. The method enables saving energy by recovering. The heat exchanger reduces the temperature of the syngas, so that the syngas can be used as a fuel, and cool gases passed to the reactor to reduce the gasification and shut-down the reactor. The combustion heater provides the heat to the heat exchanger when that heater is isolated from the reaction chamber, thus allowing efficient double use of the combustion heater, saving equipment cost and reducing system complexity.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an apparatus for gasification of a carbonaceous feedstock.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of an apparatus for gasification of a carbonaceous feedstock.    Reaction chamber (5)    Cyclone (15)    Combustion heater (30)    Air pre-heater/cooler (35)    Recirculation fan (40)