Fluidized-bed heat generator with improved means for ash removal and heat recovery
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United States of America Patent
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Apr 12, 1988
Grant Date -
N/A
app pub date -
Dec 10, 1986
filing date -
Dec 18, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fluidized bed heat generator with improved collector for ash removal and heat recovery comprises a central hearth having a fluidization grid at its lower end. The side wall of the hearth is enclosed by a hollow peripheral enclosure to define an intermediate volume therebetween which is connected both to the upper part of the hearth and to fume tubes. These fume tubes extend through the peripheral enclosure and open into a fume exit conduit such that fumes and entrained ash from the hearth can be directed via the intermediate volume and the fume tubes to the fume exit conduit. Water is arranged to circulate within the peripheral enclosure around the hearth and fume tubes.
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