Rotary kiln heat exchanger and method of assembling same
AssigneeHarbison-Walker Refractories Company
InventorsJohn Thibault, John Stephansky, John N. Snyder
Life of this patent
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Abstract
Rotary kiln heat exchangers having precast hub and leg assemblies are disclosed. The hub and leg assemblies include interlocking features which secure the heat exchanger components together. A method of installing such heat exchangers in rotary kilns is also disclosed. Installation is relatively fast and simple, and the heat exchangers are capable of withstanding the harsh operating conditions of rotary kilns for extended periods of time.
Claims24
A precast monolithic rotary kiln heat exchanger hub comprising at least one recessed surface configured for engagement with a heat exchanger leg.
A rotary kiln heat exchanger assembly comprising:
- a heat exchanger hub including recesses;
- and
- heat exchanger legs received in the heat exchanger hub recesses.
A precast rotary kiln heat exchanger leg comprising an end configured for engagement with a heat exchanger hub.
A precast rotary kiln heat exchanger leg comprising an end including at least one recess or protrusion for engagement with an interior wall of a rotary kiln.
A rotary kiln comprising:
- a refractory lining in the kiln;
- and
- a heat exchanger assembly in the kiln including a heat exchanger hub comprising recesses, and heat exchanger legs received in the heat exchanger hub recesses.
A method of installing a heat exchanger in a rotary kiln comprising:
- positioning first and second heat exchanger legs in the kiln at initial positions;
- installing a hub between the first and second legs by moving the first and second legs from their initial positions to installed positions in which the first and second legs are engaged with the hub;
- and
- installing a third heat exchanger leg by engaging the third heat exchanger leg with the hub.
Dependencies are inferred from the claim text.