Used mineral motor oil ecological recycling procedure

Details Used mineral motor oil ecological recycling procedure Used mineral motor oil ecological recycling procedure

1994-04-21

1997-06-17

Reifsnyder, David A.

Liquid purification or separation

Processes

Separating

106277, 203 12, 208179, 208181, 208184, 208 44, 210776, 210787, 210806, 210909, 210912, C08L 9500, C10G 700, C10G 900, C10G 3306

Patent

active

056393830

ABSTRACT:
This procedure includes detecting and rejecting the used mineral motor oils containing polychlorinated biphenyls (PCB's) and/or polychlorinated triphenyls (PCT's) before filtering; before the decantation and/or distillation step, if necessary, submitting the used mineral motor oil to thermal shock treatment. In the recycling process, stabilizing the used mineral motor oils that normally contain heavy metals by adding to bitumen, using 0 to 15 percent of used mineral motor oil and a minimum of 85 percent bitumen for bituminous pavements and 1 to 20 percent of used mineral motor oils and a minimum of 80 percent bitumen for bitumen emulsions and paints. Also in the recycling process the used mineral motor oils are mixed with bitumen and paraffinic elastomers, stabilizing the heavy metals contained in the used mineral motor oils, getting usual bituminous pavements, self-draining bituminous pavements, sport pavements, etc. EPM EPDM or butyl rubber are used as paraffinic elastomers.

REFERENCES:
patent: 4021333 (1977-05-01), Habiby et al.
patent: 4053401 (1977-10-01), Fukushima et al.
patent: 4211576 (1980-07-01), Yan
patent: 5141628 (1992-08-01), Martin et al.

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