Title:
【発明の名称】ボードを乾燥させるための方法及び乾燥機
Document Type and Number:
Japanese Patent JP2664000
Kind Code:
B2
Abstract:
In order to dry boards, the boards are guided on racks through a drier and brought into contact with drying air in two stages. In a stage A with a higher drying power, the drying air is supplied at a higher temperature and with an at least average humidity, and in the other stage B, it is supplied at an average temperature and with a low humidity. The waste heat of the outgoing air from stage A is used for preheating the drying air. This process should reduce the consumption of primary energy. For that purpose, a process is known that consists of also using the outgoing air condensation heat. This has the inconvenience, however, of requiring substantially more secondary energy, as important air mass flows are required to transfer heat because of the low condensation temperature. Primary energy should be reduced by using condensation heat without substantially increasing secondary energy requirements. According to the invention, the outgoing air from stage A is supplied to stage B through a heat exchanger arranged in the rack of the drier. The drying air of stage B is supplied in counter-current through the drier with a low humidity and temperature, so that the boards are dried in stage B both by condensation heat and by radiant heat. Thus only a reduced mass flow of drying air is required to transfer the condensation heat. The consumption of primary and secondary energy is low. This invention is suitable for drying boards as for buildings and gypsum plain boards or fiber boards.
More Like This:
| WO/1989/002568 | METHOD AND APPARATUS FOR DRYING SOLID MATERIAL |
Inventors:
BAANAA FURIITORITSUHI
BURAUN MANFUREETO
RANGU KAARUUFURIITORITSUHI
REEN GERUHARUTO
MAURAA KAARU
SHUMITSUTO MANFUREETO
SHUTAINKUURU YOOZEFU
BURAUN MANFUREETO
RANGU KAARUUFURIITORITSUHI
REEN GERUHARUTO
MAURAA KAARU
SHUMITSUTO MANFUREETO
SHUTAINKUURU YOOZEFU
Application Number:
JP50618994A
Publication Date:
October 15, 1997
Filing Date:
July 27, 1994
Export Citation:
Assignee:
BABUKOTSUKU BEE ESU HAA AG
International Classes:
F26B3/28; F26B15/12; F26B15/18; F26B21/00; F26B21/04; F26B21/06; F26B23/00; F26B23/02; F26B23/10; (IPC1-7): F26B15/12; F26B15/18; F26B21/00; F26B21/04
Domestic Patent References:
| JP60120177A | ||||
| JP52154164A | ||||
| JP645093U |
Attorney, Agent or Firm:
Toshio Yano (3 outside)