Memo on a visit in Wesseling and Gelsenberg on November 4 and 5, 1942

Technical Report · Wed Nov 11 00:00:00 EDT 1942

OSTI ID:6130210

Wissel, K

This memo briefly described the arrangement of chambers at Wesseling and some difficulty there with electric preheaters. It gave more detail about the operations in Gelsenberg. Gelsenberg had recently changed its target level for solids in the sludge residues from 25% or more down to 20% to 22%; as a result, the reaction ovens ran more evenly and with no runaway temperature increases. Gelsenberg used a liquid phase catalyst containing 1.8% Luxmasse, 1.2% iron sulfate, and 0.3% sodium sulfide. The centrifuge oil, pasting oil, and the centrifuge residue, respectively, contained 11% to 12%, 10%, and 35% solids. Residues left on the sieve before the centrifuge amounted to about 1 metric ton per day, with 6 liquid-phase chambers and a 1 mm-mesh sieve. Cold paste could not be added to the ovens continuously over a long period of time without causing an excessive concentration of asphalts in the sludge; the addition of cold paste had to be intermittent. Gelsenberg averaged 295 operating days per year in liquid-phase operations, as opposed to 320 operating days for vapor-phase operations. The starting material for vapor phase (5050 chambers) had 0.3% sulfur added, and it had a distillation endpoint of 335/sup 0/C. The starting material for the next step, the 6434 chambers, contained 0.15% phenols; those chambers gave a yield of 0.4 by 1 kg/liter of reaction space/hr.

• Research Organization: Hydrierwerke Poelitz, A.G. (Germany)
• OSTI ID: 6130210
• Report Number(s): TOM-77-00686
• Country of Publication: United States
• Language: German

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