Treatment of Middle Cut

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    Chapter 5-Treatment of kerosene

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    Kerosene Treatment

    Kerosene cut : 140-270C

    SRK

    Straight Run KeroseneC10-C14

    1. Kerosene Hydro-desulfurisation

    2. Smoke point improvement Extraction process (Edeleanu process)

    Removal of Aromatics

    Hydro-treatment

    Conversion of Aromatics to

    Naphthenes

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    Kerosene hydro-desulfurisation

    T : 350 C

    Catalyst : Cobalt or Ni-Mo

    P -5 Kgf/cm2

    H2S, NH

    3, H

    2O, H

    2C1-C5cracking

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    Kerosene smoke point-Edeleanu process

    Mainly for Assam crude (High Aromatic content)

    Feed : Kerosene free of water and air;

    SO2as solvent(BP -10 C)

    -15 C-26 C 13 kg/cm2 7 kg/cm2 -0.5 kg/cm2

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    Kerosene smoke point-Hydrotreating

    Semi-Adiabatic

    reactor

    Pt metal

    1-5 ppm of

    sulphur

    P- 50-70 kgf/cm2, T-260-300 C, Space velocity: 2.5-3.5

    Smoke point : Feed

    20 mm and Product

    31Aromatics% : Feed17 and Product -1.5

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