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U.S. Department of Energy
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Comparison of sludge separation processes in the BERC used lubricating oil re-refining process. Final report

Technical Report ·
OSTI ID:6088394
Alternative methods to separate the sludge from the solvent/oil mixture encountered in the BERC Oil Re-refining Process were investigated in the laboratory and in a centrifuge vendor's pilot plant. The test results indicated that a combination of gravity settling to effect a gross separation and centrifugation of the sludge underflow to increase oil recovery would be the best economical situation. Based upon this process change, the budget estimate for the capital and operating costs were revised for a 10-million-gallon per year plant. The revised economic estimates based upon current conditions showed: (1) the total capital requirements would be approximately $2.8 million, (2) the total manufacturing cost would be $0.45 per gallon, (3) the cash flow return on investment before taxes would be approximately 54 percent.
Research Organization:
Benham-Blair-Holway and Spragins, Tulsa, OK (USA)
DOE Contract Number:
EY-77-C-02-4343
OSTI ID:
6088394
Report Number(s):
BETC-4343-1
Country of Publication:
United States
Language:
English