Low temperature stabilization of liquid oils
AssigneeTopsoe A/S
InventorsMagnus Zingler Stummann, Jostein Gabrielsen
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Abstract
The invention relates to a process for hydrotreating a liquid oil stream such as pyrolysis oil stream by, in continuous operation, reacting the liquid oil stream with hydrogen in the presence of a nickel-molybdenum (Ni—Mo) based catalyst at a temperature of 20-240° C., a pressure of 100-200 barg and a liquid hourly space velocity (LHSV) of 0.1-1.1 h−1, and a hydrogen to liquid oil ratio, defined as the volume ratio of hydrogen to the flow of the liquid oil stream, of 1000-6000 NL/L thereby forming a stabilized liquid oil stream.
Claims1
A process for hydrotreating a liquid oil stream by, in a continuous operation in a fixed bed reactor, reacting the liquid oil stream with hydrogen in the presence of a nickel-molybdenum (Ni—Mo) based catalyst at a temperature of 20-240° C., a pressure of 100-200 barg, a liquid hourly space velocity (LHSV) of 0.1-1.1 h−1, and a hydrogen to liquid oil ratio, defined as the volume ratio of hydrogen to the flow of the liquid oil stream, of 1000-6000 NL/L, thereby forming a stabilized liquid oil stream;
- wherein a carbonyl number of the stabilized liquid oil stream is below 3.0 mol/kg, as measured by ASTM E 3146, and wherein a ratio of the carbonyl number of the liquid oil stream to a carbonyl number as measured by ASTM E 3146 in mol/kg of the stabilized liquid oil stream is monitored and maintained at 1.7 or higher.
Dependencies are inferred from the claim text.