Comparison of liquid phase operations, Poelitz and Gelsenberg
1942
A comparison is presented of liquid phase coal hydrogenation at the Poelitz and Gelsenberg plants for January through April 1942. Coal analyses are compared for water and ash content in both raw and cleaned coal. Comparisons of catalyst with reference to dried coal are given for Bayer mass, iron sulfate, and sulfigran. Coal paste solid content and residue composition are also compared. High pressure oil yield is compared based on the available oil yield plus the losses occurring in low pressure operations. Comparisons are also given for amount of solids in centrifuge residue, low temperature carbonization analysis and theoretical liquefaction. Since calculation of gasification did not rest on a sound basis, gasification comparisons are computed from the difference between theoretical liquefaction and high pressure oil yield. Balances for the two plants are compared in a table. Differences in operating results are said to have arisen from varying carbon-content of coal, variable conversion, variable losses in residue processing, variable gasification and indeterminate gas and oil losses, and variable gasoline and lubricating oil concentration in the oil yield. 1 table.
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