| 摘要 |
The invention relates to a waste-heat boiler ( 3 ) for a Claus plant, comprising a steam generation chamber that is surrounded by a pressure-proof jacket ( 14 ), a long tube bundle ( 18 ) of heat exchanger tubes that extend through the steam generation chamber and are inserted into tube sheets ( 19 ) at both ends, at least one additional tube bundle ( 20 ) of shorter heat exchanger tubes, which are likewise inserted into the tube sheets ( 19 ) at their outlet ends and open into an influx chamber ( 21 ) at their inlet ends, in addition to a head part ( 22 ) that is connected to the tube sheet ( 19 ) at the outlet end and is subdivided into sections. The long tube bundle ( 18 ) is traversed by a hot process gas that emerges from a combustion chamber ( 2 ). The influx chamber ( 21 ) is located inside the steam generation chamber and is exposed to a cooler process gas ( 10 ) from a catalyst stage ( 4 ) of the Claus plant. One tube bundle ( 18, 20 ) is allocated to each section of the head part ( 22 ). Devices for draining condensed sulphur are connected to the sections.
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