| 摘要 |
A heating chamber for solid material which chamber is rotatable about its longitudinal axis (10), preferably a low-temperature carbonization drum (8) for waste (W), is equipped with a number of heating tubes (12b) accommodated in the interior space (13) and aligned approximately parallel to one another. To ensure that only fine material can collect between the heating tubes (12b) and the interior wall (33) of the heating chamber, it is provided according to the invention for the heating tubes (12b), viewed in cross-section, to be arranged in a virtually closed row along the wall (33) of the interior space (13). In this, for example, circular row there are located dummies (12D) which are preferably easy to remove and preferably have the same diameter as the heating tubes (12b).
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