Heating system for fluidized bed gas generator
AssigneesMannesmannrohren-Werke AG, Bergwerksverband GmbH
InventorsGuenter Buchner, Johannes Alkemper, Rainer Durrfeld, Heinz Gaessler
Life of this patent
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Abstract
The retort chamber for generating gas by applying hot steam to coal in a fluidized bed is heated by meandering tubes, dipping into the bed, and being suspended from long, hollow boxes which, in turn, are particularly suspended in the retort chamber. The boxes support also manifold tubes connected to the heating tubes and being further connected to a heating fluid feed and distribution as well as a collecting and discharge system.
Claims7
In a gas generator, using a fluidized bed of steam and coal generated and maintained in a horizontally positioned stationary cylinder, having an axis and a jacket, a heating system, comprising:
- a first and a second single-piece, long, hollow box, each being internally cooled and thermally insulated over its outer surface, said boxes having a horizontal disposition in and transversely to the axis of the cylinder, and being spaced from each other in a direction transverse to their axes;
- a first and a second plurality of heating tubes respectively suspended from the first and second boxes for downward extension, but not communicating with the hollow interior thereof;
- a plurality of manifold tubes supported on the boxes, each manifold tube lying on both boxes, said manifold tubes being connected to the heating tubes, in that each heating tube is connected to two of the manifold tubes for respectively feeding and discharging heating fluid;
- heating fluid feed and discharge duct means inside the cylinder and connected to the manifold tubes to respectively feed to some of them heating fluid and to receive heating fluid from others;
- and
- suspension means for suspending each of the boxes from above and bearing against the outer jacket of the cylinder and including thermal-expansion-compensating means.
Dependencies are inferred from the claim text.