Patent ID: 9557115
Date: 2017-01-31
CPC Classifications: F28C,F28D,F28F

Claim:
1. A moving bed heat exchanger comprising: an enclosure having side walls, a roof and a floor; a tube bundle disposed within the enclosure; the tube bundle being operative to transport a cooling fluid; wherein the spaces between tubes of the tube bundle are operative to permit transport of hot solids and/or ash therebetween; an orifice plate disposed downstream of the tube bundle in the direction of the flow of hot solids and/or ash, the orifice plate including a plurality of vertically spaced plates, each of the plates defining a fewer number of orifices of larger diameter than that of the plate above, a total cross-sectional area of the orifices in each of the plates being substantially equal; and a plurality of valves disposed downstream of the orifice plate in the direction of the flow of hot solids and/or ash and vertically aligned with the orifices of the lower plate to receive the hot solids and/or ash passing through the orifice plate.