Showing papers by "Jordan University of Science and Technology published in 1985"

Hydrolysis of lignocellulosic material

Abstract: A continuous hydrolysis process for the hydrolysis of wood or other lignocellulose material into sugars and other products has an overall countercurrent flow of liquids and solids but an integral co-current flow of the liquids and solids as part of the process. As shown in Figure 2, woodchip or other feedstock is formed into a slurry which is acidified, pressurised and heated before being hydrolysed in reactors J. Three heat exchangers L1, L2 and L3 form a closed circuit in which exchanger L2 recovers heat from the slurry, L1 returns heat to the slurry and L3 makes up lost heat. The slurry is cooled before pressure reduction by pressure reducing means N and separation of the solids and liquid. The cooling prevents flashing to steam of part of the liquid in the slurry so that the process is single phase where generation of steam is avoided. After separation the solids can proceed to further processing or to discharge as lignin as indicated by arrow B. The liquid can proceed to further processing or discharge as indicated by arrow D.

Self-inking stamp with adjustable printing members

Abstract: A self-inking stamping device of the type which inverts as it travels between inking and printing positions upon movement of an actuating member. A stamping insert is pivoted on the actuating member and comprises a frame which is provided with a fixed printing plate and a stamping belt unit movably mounted in the frame of the stamping insert and comprising a plurality of juxtaposed parallel endless stamping belts, which are longitudinally adjustable relative to each other and carry type protruding through an aperture of the printing plate. The stamping belt unit is adjustable by a screw mechanism in a direction which is normal to the plane of the printing plate. In order to ensure that the inking and printing operations will always be performed under the same conditions, regardless of the thickness of the printing plate, the pivot of the stamping insert is held without backlash in the stamping belt unit, the frame of the stamping insert is provided with slots, which are normal to the plane of the printing plate, and the pivot extends through said slots so that said pivot is adjustable relative to the frame along said slots in unison with the stamping belt unit.