《Table 2 Comparison of experiment value and value calculated by kinetic model of olefin conversion1)

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《Kinetic Model of Hydrogenation for Removal of Trace Olefins from Alkylation Mixture Formed during Linear Alkylbenzene Synthesis》

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1) Hydrogenation conditions covered:a temperature of 30°C and a hydrogen partial pressure of 1.0 MPa.

The hydrogenation reaction system included three phases consisting of gas，liquid，and solid catalyst.At the lower reaction temperature，the saturated vapor pressure of hydrocarbons was far less than the reaction pressure and the hydrogen partial pressure was close to the reaction pressure.It was assumed that the gas phase only contained hydrogen，and the hydrogen partial pressure was equal to the reaction pressure.The hydrogenation experiments for removal of trace olefins were carried ou in a fixed bed reactor to investigate the effects of WHSV hydrogen partial pressure，and reaction temperature on olefin conversion.The experimental results under different conditions are listed in Table 1.The results in Table 1 showed that the conversion increased with the decrease of WHSV（SF），and the increase in hydrogen partial pressure or reaction temperature.This might occur because the increase of the hydrogen partial pressure or the reaction temperature both could increase the reaction rate.Reducing the weight hourly space velocity of the hydrogenation feedstock could prolong the contact time with the catalyst bed，which was advantageous to the improvement in olefins conversion rate.