HEAT EXCHANGE METHOD

WIPO Patent Application WO/2002/003003

A1

A heat exchange method capable of suppressing a loading on a rotating motor and a wear of a seal part and simultaneously performing a recovery of heat from exhaust gas and a reduction in NOx, comprising the steps of detecting the density of Nox in the exhaust gas exhausted from a furnace (10) such as a billet heating furnace and a billet heat treatment furnace having a rotating regenerative heat exchanger installed therein and controlling the speed of a rotor (3) by a controller (14) so as to increase the speed of the rotor (3) of the rotating regenerative heat exchanger when the density of Nox is increased, whereby the speed of the rotor is not required to be increased at all times for the maximum load of the furnace, and the load on the motor and the wear of the seal part can be suppressed.

FUKUTANI KAZUHIKO (JP)
OHKOHCHI TOSHIHIRO (JP)
TSUBOI SHUICHI (JP)
MIYAMOTO TOMOHARU (JP)

PCT/JP2001/005719

January 10, 2002

July 02, 2001

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ALSTOM POWER NV (NL)
FUKUTANI KAZUHIKO (JP)
OHKOHCHI TOSHIHIRO (JP)
TSUBOI SHUICHI (JP)
MIYAMOTO TOMOHARU (JP)

C21D1/00; C21D1/52; F23L15/02; F23N5/00; F27D17/00; F27D19/00; F27D21/00; F28D11/02; F28D19/04; F28D21/00; (IPC1-7): F28D19/04; F23C11/00; F23L7/00; F23L15/02; F23N5/00

JPH06313508A	1994-11-08
JPS5336736A	1978-04-05
JP8020070B2
JPS59130949U	1984-09-03

Yoshitake, Kenji (Fuji Bldg. 2-3 Marunouchi 3-chome Chiyoda-ku, Tokyo, JP)

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