NOVELTY - In a pyrolysis system for carbon-containing material, with a pyrolysis reactor (1) (supplied with low-oxygen combustion exhaust gas as low-oxygen pyrolysis atmosphere) and a heating section (3) (with burners (11, 20) heatable by pyrolysis gas) for heat exchange particles (10) fed via a closed circuit through the reactor and heating section, the heating section has a forced transporting device for the particles.    USE - For pyrolyzing carbon-containing material (such as biomass (e.g. energy plants or lignocellulose) or waste material (e.g. plastics), especially regenerative biomass) in the absence of oxygen (typically at 400-600 degrees C), to give solid pyrolysis coke, pyrolysis condensate liquid or vapor and pyrolysis gas. The products are controllable by varying the conditions; specifically rapid pyrolysis for less than 10 seconds gives a high yield of liquid condensate (pyrolysis oil or bio-oil) and a lower yield of coke and gas and increased times give increasing yields of coke and gas relative to liquid. The gas is used as fuel for pyrolysis process; and a mixture of the liquid and coke (in slurry form) is generally gasified to give a crude synthesis gas for production of motor fuels and/or basic chemicals.    ADVANTAGE - A high precipitation tower for the heat exchange particles is unnecessary, so that the system is compact and suitable for decentralized use (e.g. after being transported on a lorry). The thermal energy flow introduced by the particles into the pyrolysis reactor is also more easily adjusted and regulated, so that pyrolysis coke of specific particle size can be produced.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic diagram of one form of carbon-containing material pyrolysis system with indirect heating of the heating section.    Pyrolysis reactor (1)    Screw conveyor in pyrolysis reactor (2)    Heating section (3)    Screw conveyor in heating section (4)    Heat exchange particle supply (5)    Carbon-containing starting material supply (6)    Liquid pyroysis product outlet (7)    Solid pyrolysis product outlet (8)    Transporter (9)    Heat exchange particles (10)    Burner (11)    Solid partial material stream (12)    First heat exchange particle fraction (13)    Pyrolysys coke (14)    Non-separated part of partial material stream (15)    Rotating sieve (16)    Transporting unit (17)    Collection vessel (18)    Second heat exchange particle fraction (19)    Burner in collection vessel (20)    Supply of air for combustion (21)    Second collection vessel (22)    Condenser (23)    Gas line (24)    Fuel stream (25)    Circulating gas outlet (26)    Condensate line (27)    Mixing chamber (28)    Slurry stream (29)    Direction of rotation of conveyor screw of heating section (30)    Direction of rotation of conveyor screw of pyrolysis reactor (31)    Fluid partial material stream (32)    Lambda probe (33)