NOVELTY - A batch process for the pyrolysis of organic waste substances and biomaterials to give pyrolysis gas and oil plus carbon black, involves processing the material in containers which are transferred through a succession of thermally-insulated stations for drying, prepyrolysis, actual pyrolysis and gradual cooling, arranged in two parallel, energetically-coupled process lines with opposite heating and cooling directions effectively providing paired heat exchange.    USE - For the production of pyrolysis oil, pyrolysis gas and carbon black from organic waste and biomaterials.    ADVANTAGE - Improves the prior-art process with regard to energetic parameters (better use of heat), product quality and process throughput. The process is readily adapted for different starting materials and/or product requirements and also meets the relevant safety and environmental standards.    DETAILED DESCRIPTION - A batch process for the pyrolysis of organic waste substances and biomaterials (I) by continuous heating in a container in a pyrolysis furnace, followed by gradual condensation to obtain pyrolysis gas and oil, cooling the container under inert gas and removing the residual carbon black. In this process, heating and cooling are carried out gradually in separate, thermally-insulated stations with their own gas lines, for drying the material (I), prepyrolysis to remove harmful compounds, actual pyrolysis to give the target products in as pure a state as possible, and gradual cooling, the stations being arranged in two parallel, energetically-coupled process lines with opposite heating and cooling directions effectively providing paired heat exchange.    DESCRIPTION OF DRAWING(S) - The drawing shows a twin-line plant for pyrolysis of waste materials by a batch process according to the invention. (The drawing includes non-English language text).    drum-shaped pyrolysis containers (1)    tunnel-shaped insulated space (2)    pyrolysis furnace (3)    nitrogen from air separator (4)    nitrogen and/or gas lines (4a-d)    heat exchangers (5a, 5b)    off-gas from furnace (6)    condenser and quencher (7; 8)    off gas purifier (9)    pyrolysis gas line (10)    after-heater (11)    condenser (12)    tanks for pyrolysis oil fractions (14)    collecting tank (15)    storage tank for uncondensable pyrolysis gas (16)    gas line to burners (17)    drying phase; (V) prepyrolysis (T)    pyrolysis (P)    cooling (K)    further cooling. (N)