Abstract: The invention relates to a method of drying particle material in a bed under pressure by indirect heating. The method according to the invention is carried out so that the steam driven off from the material is superheated with heat of a higher temperature, that the steam is passed through the material bed, which is advanced slowly. The steam leaves the bed at a low speed, thereby preventing greater material particles from following along with the steam from the bed. The steam heat is recovered in a manner known per se.

Abstract: A method of cooking cellulose material and effectively preserving the heat and terpentine content of the cooking liquor is disclosed. The cooking liquor is allowed to expand and the expansion steam (blow steam) is conveyed into a bed of cellulose material in a storage container (3', 3) to heat and impregnate the cellulose material before cooking. A heated zone is maintained in the bed of material below the surface of the bed by regulating the flow of expansion steam into the container. Uncondensed, evil-smelling and poisonous gases are at the same time prevented from flowing out into the atmosphere. These gases are drawn off from the storage container for destruction.