Method of autoclaving porous piece-goods especially moulded bodies of porous concrete
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United States of America Patent
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-
Nov 22, 1994
Grant Date -
N/A
app pub date -
Oct 20, 1992
filing date -
Oct 24, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of autoclaving porous piece-goods, by steam under pressure, wherein the autoclaving operation includes sequential phases of heating with steam, holding, and then relaxing the pressure and temperature, wherein the holding phase includes a drying process. In order to obtain as dry a product as possible with the smallest possible energy input, it is provided that a drying process is carried out within the holding phase in which the autoclave is heated more than to compensate for heat losses and to a temperature above the temperature of vaporization of the water so that the material is dried by controlled discharge of steam from the interior of the autoclave. The steam discharged from one or more autoclaves during the drying process is used to heat up at least partially an autoclave to be heated.
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