Hydrogenation of micro- and macro-crystalline paraffin(s) - on catalyst for hydrogenative demetallisation and catalyst for hydrogenation, giving better colour levels

摘要

In hydrogenation of macro- and micro-crystalline paraffins in a mixed catalyst bed, at 280-345 deg.C, H2 pressure of 75-150 kg/sq. cm, ratio of H2:feed of 150-400 Nl/l and hourly rate, WHSV, of 0.2-0.8/h, the microcrystalline paraffin feed is contacted with 2 catalyst beds, (a) the first bed comprising a catalyst for hydrogenative demetallisation, with a proportion by vol. of 10-95(25-75)%, and (b) the second bed comprising a catalyst for hydrogenative treatment. ADVANTAGE - Adequate colour levels are maintained for a longer time, and the periods of operation can be lengthened, in an efficient, continuous, catalytic process.