Mineral oils: processes and products – Refining – Purifying used oil
Patent
1986-10-06
1989-03-28
Shine, W. J.
Mineral oils: processes and products
Refining
Purifying used oil
208251H, 208254H, 208216R, 2082621, 2082625, 210663, 210664, 210669, 210668, 210909, C10M17500
Patent
active
048161381
ABSTRACT:
The invention concerns a process for converting toxic liquid waste materials containing harmful amounts of biologically difficult to degrade toxic waste materials containing organic halogen compounds, and which also may contain organically bound oxygen, nitrogen and/or sulfur, into an innocuous hydrocarbon stream. These waste materials together with hydrogen are passed over a hydrogenating catalyst at 250.degree.-400.degree. C. and under increased pressure. The effluent of this hydrogenolysis is cooled and separated into a non-toxic liquid hydrocarbon stream, a hydrogen halogenide, ammonia, and/or a hydrogen sulfide containing stream and a gaseous stream of light hydrocarbons and hydrogen. The waste material which contains 0.5-60 weight % halogen and possibly contains up to 10% sulfur and/or small amounts of nitrogen-containing compounds is conditioned and this conditioned stream is passed, together with hydrogen under a prssure of 30-80 bar and with a LHSV of 0.5-2.5 H.sup.-1, over a column filled with absorbent, to guard the hydrogenating catalyst, and subsequently over the hydrogenating catalyst.
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Laghate Ashok S.
Visser Leo
Kinetics Technology International B.V.
Myers Helane
Shine W. J.
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