Heat exchange – Heating and cooling – Heating and cooling of the same material
Patent
1986-09-08
1988-11-15
Koczo, Michael
Heat exchange
Heating and cooling
Heating and cooling of the same material
165 84, 165169, 165110, 165920, 34175, 34177, 366 12, F25B 2900, F26B 1712, E01C 1910
Patent
active
047842164
ABSTRACT:
This application discloses several components relating to a heating apparatus which preferably are used in conjunction with each other in an apparatus for heating solid granular or particulate material, such as aggregate used to make asphalt concrete. One component of the present invention includes a heater-condenser unit which indirectly heats the material by circulating heat transfer fluid within hollow plates contained in a housing holding the material. The material is heated, the heat transfer fluid is condensed and a condensate removal means associated with the hollow plates removes the condensate from the housing. The heat transfer fluid used in the heater-condenser preferably is supplied in the form of a vapor or gas evolved from liquid contained in material heated by another type of heater. In this other type of heater, the material to be dried enters a chamber containing hollow heat exchange plates through which a primary heat transfer fluid is circulating. The material is heated to a temperature at which the liquid is evaporated and the evolved vapor is collected within the heater, routed through an accumulating apparatus and transferred out of the heater to the heater-condenser.
Other components associated with the present invention include a material flow control apparatus to be attached to the bottom of a bottom discharging solid material containing hopper. The flow control apparatus includes a plurality of bars adjustably extending into the hopper.
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Bracegirdle Paul E.
Garbelman David L.
Murray Stuart W.
Swisher, Jr. George W.
Bracegirdle Paul E.
CMI Corporation
Koczo Michael
Neils Peggy A.
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