A throughdrying process and system for the manufacture of a tissue web conveys
a fibrous web of cellulose fibers through a throughair drying station that includes
one or more throughair dryers. The throughair drying station is supplied with a
heated drying medium from a source. After drying the web, the drying medium is
conducted away from the throughair drying station as moisture laden exhaust air
that is collected, dried, and at least partially recirculated back to the throughair
drying station as a supplement to the source of heated drying medium, thereby reducing
the load on the heated drying medium source.
