Waste heat system

摘要

A preheat charging system for preheating scrap metal prior to delivery to a melting furnace. The system includes a preheating station having a heating chamber adapted to receive scrap metal. Hot gas from a burner chamber is circulated around the scrap metal. The burner chamber is adapted to receive exhaust gas from a hot exhaust gas source such as a melting furnace. A burner apparatus is mounted within the burner chamber in a flow path of an exhaust inlet port. The burner is configured to supply supplemental heat on demand to the heating chamber to supplement the hot exhaust gas. A first fan can be provided to direct exhaust air from a furnace to the burner chamber. A second fan can be provided for directing air into the burner apparatus.

主权项

1. A system for preheating scrap metal prior to delivery to a melting furnace, the system comprising:
a conveyor station including:
a scrap heating chamber;a scrap inlet for receiving scrap metal into the scrap heating chamber;a scrap outlet for discharging scrap metal from the scrap heating chamber; anda treatment gas inlet port disposed between the scrap inlet and the scrap outlet for receiving hot exhaust gas into the scrap heating chamber for heating the scrap metal; the system further comprising a gas preheating station including: a burner chamber including a hot exhaust gas inlet port for receiving hot exhaust gas from a hot exhaust gas source; and
a hot exhaust gas outlet port; anda burner apparatus including a burner and an associated fan, the burner mounted within the burner chamber in a flow path between the exhaust inlet port and the outlet port, the burner configured to supply supplemental heat on demand to the preheating station to increase the hot exhaust gas temperature;wherein the hot exhaust gas outlet port is in fluid communication with the treatment gas inlet port of the conveyor station for delivering the hot exhaust gas thereto for heating the scrap metal.