Heat-recovery boiler
AssigneeLurgi GmbH
InventorsWalter Boll, Werner Roll, Christoph Erdmann, Ulrich Wagner, Thomas Wurzel
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Abstract
The invention relates to a heat-recovery boiler (3) consisting of a tube bundle heat exchanger (7) which is incorporated into a pressure vessel (2) downstream of a gasification device. Displacement bodies (9) are inserted into pipes which are flowed around by hot process gas. According to said invention, in order to avoid corrosion problems like metal dusting, said displacement bodies (9) are made of graphite.
Claims10
A heat-recovery boiler (3), which comprises a tube bundle heat exchanger permanently installed in a pressurized container (2) and is downstream from a gasification device, a displacement body (9) extending over at least a part of the length of the pipe being inserted centrally and coaxially into each of the pipes (7), which the hot process gases flow through, to form an annular space (10) with the interior of the pipe, characterized in that the displacement body (9) comprises graphite.
Dependencies are inferred from the claim text.