ORGANIC COLLANT RECLAMATION. Quarterly Progress Report No. 11, December 15, 1961 to March 15, 1962

Technical Report · Sat Apr 14 23:00:00 EST 1962

OSTI ID:4804983

Scola, D A; Adams, J S; Richiusa, C C

Coolant reclamation studies were devoted to process development and product evaluation. The solvent distribution process for reclaiming both OMRE Core I and OMRE Core II high boiler and spent coolant was extended to formulated spent coolant mixtures containing 5, 10, 30, 40, and 50 wt% high boiler. Fractionation of the high molecular weight fraction from the low molecular weight fraction (reclaimed coolant) was achieved in all cases. Cost calculations show that spent coolant containing 20 wt% or greater high boiler (HB) would be economical to reclaim. Economic evaluation shows that at these HB concentrations, the solvent distribution reclamation process gives a yearly profit of about 0,000 and a per cent return on investment of 38 to 50%. In addition, several blends of solvents were used to reclaim Core II high boiler and spent coolant. These results make the process more general so that it is not dependent on present solvent compositions or sources. The results also showed thnt isodctane (branched chain aliphatic) does not give maximum yields of reclaimed coolant. Electron irradiation on Santowax-omp solutions of reclaimed high boiler gave residue values (after distillation) which were decreased by 40 to 50% compared to residue values from the m-terphenyl blank. Wiped-film distillation of OMRE Core II high boiler gave a 27% yield of reclaimed coolant at its maximum temperature 1323 deg C1 and minimum pressure (0.5 mm Hg). An economic evaluation of this process gives a profit of 2,000 per year when compared to the case where high boiler is discarded and replaced with new terphenyl. Optimum conditions for hydrocracking 15.8% partially reduced high boiler using copper chromite catalyst were obtained. The process can operate from 495 to 550 deg C, at 500 to 1500 psig, and with a liquid hourly space velocity of l.8to 4.8 hr/sup -1/. The process is characterized by low coke formation under all conditions. A six-hour run gave a coke yield of 0.4 wt%/hour based on feed material. The product showed considerably better coolant properties than high boiler or partially reduced high boiler. Good yields (60 to 80%) of product having low viscosity (0.8 cp at 265 deg C), low average molecular weight (254 to 350), an increased thermal decomposition temperature (390 deg C), and low fouling tendency (~5 mg) were obtained. Cost evaluations of a 60, 70, and 80% yield process show a profit of pared to the process where high boiler is burned and replaced with new terphenyl. The fundamental aspects of the coolant program have begun. Dihydroresorcinol ethylenol ether 1680 g), 3- phenylcyclohexen-2-one 1200 gl, and 3bromo-ethylbenzene (140 g), intermediates in the synthesis of mono-methyl and -ethyl terphenyls and 1-phenyl-3xenyl- cyclohexadiene-1,3 Idihydroquaterphenyl) were synthesized. The radiation and thermal stability of the methyl- and ethyl terphenyls as well as the fouling ability will be determined. (auth)

• Research Organization: Monsanto Research Corp. Boston Labs., Everett, Mass.
• NSA Number: NSA-16-024940
• OSTI ID: 4804983
• Report Number(s): IDO-11052
• Country of Publication: United States
• Language: English

Related Subjects

BOILING
CATALYSIS
CHROMIUM COMPOUNDS
COPPER COMPOUNDS
DECOMPOSITION
DISTILLATION
DISTRIBUTION
ECONOMICS
EFFICIENCY
HIGH TEMPERATURE
MIXING
OMRE
ORGANIC COMPOUNDS
ORGANIC COOLANT
POLYMERS
POWER PLANTS
QUANTITY RATIO
REACTOR TECHNOLOGY
REACTORS
SEPARATION PROCESSES
SOLUTIONS
SOLVENTS
STABILITY
VELOCITY
VISCOSITY