Titre: MANUFACTURE OF ABRASION-RESISTANT COKE Auteur:Juentgen, Harald; Knoblauch, Karl; Degel, Josef; Zuendorf, Dieter; Giessler, Klaus Date:
28 April 1981
Sujet:Medicine ; Sciences ; Chemistry Description:
Bodies are press-molded from a mixture of particulate fuel and a binder. These bodies are heated to a temperature between about 600-900.degree.C. in a rotary furnace to degas them. The degassing is carried out without subjecting the bodies to mechanical stresses and without permitting combustion of the expelled volatile gases. The resulting shaped coke has a greatly improved abrasion resistance.
Titre: ADSORPTIONSMITTEL FUER KREISLAUFPROZESSE Auteur:Juentgen, Harald; Knoblauch, Karl; Zuendorf, Dieter Date:
25 January 1973
Sujet:Performing Operations ; Transporting ; Physical OR Chemical Processes OR Apparatus In General ; Separation ; Chemistry ; Metallurgy ; Inorganic Chemistry ; NON-Metallic Elements ; Compounds Thereof ; Medicine ; Sciences ; Chemistry ; Chemistry Description:
1366406 Active carbon; purifying sewage BERGWERKSVERBAND GmbH 17 July 1972 [15 July 1971] 33381/72 Headings C1A and C1C Active carbon is prepared by mixing non- gaseous carbon containing material with 5 to 20% by wt. of the mix of pitch and/or tar extruding the mixture into strands of 1-15 mm. maximum cross-sectional dimension cutting the extruded strands in lengths of 1À5-15 mm. immediately after they leave the extrusion aperture, and coking the resulting lengths at a temperature of 600‹ to 1000‹ C. and activating the coked material with steam at 750-1000‹ C. Preferably the strands have a maximum crosssectional dimension of 3-10 mm. and are cut into lengths of 8 to 12 mm. immediately after leaving the extrusion aperture. The extrusion nozzle preferably has a conical inlet. The strands may be cut so that their cut length is up to 3 times preferably between 1 and 1¢ times their maximum cross-sectional dimension. The particles may be rendered approximately spherical by utilizing a length approximately equal to the cross-sectional dimension and coking in a rotary furnace. The active carbon produced may be used in purifying gases, vapours or liquids using a treatment chamber from which exhausted carbon is withdrawn to a regenerating step and the regenerated carbon recycled. Thus waste water from steam treating sewage sludge which water contains 1800 mg./ litre of organic carbon may be purified by being passed through a bed of such carbon, which may be withdrawn and regenerated with steam at 850‹ C. The loss by abrasion per cycle of regeneration was much reduced.