Abstract:

In this paper n-hexane is chosen as typical volatile in condensed mode polymerization
process,and the adsorption equilibrium of volatile in polyethylene particles is studied
through experiments at differenttempera-tures, pressures and particle diameters. It is
found that more adsorbed quantity of volatile atequilibrium can be obtained with lower
temperature, higher pressure andsmaller particle diameter. Underpolymerization conditions,
the adsorbed quantity at equilibrium is more strongly affected by temperature thanby
pressure, and if the diameter distribution of particles is very wide the effect of diameter
on the adsorbedquantity must be taken into consideration. With theoretical analyses a model
is proposed for calculating theadsorbed quantity of volatile at equilibrium.

Key words: adsorption equilibrium, adsorption model, polyethylene process, condensed modeminipage

摘要： In this paper n-hexane is chosen as typical volatile in condensed mode polymerization
process,and the adsorption equilibrium of volatile in polyethylene particles is studied
through experiments at differenttempera-tures, pressures and particle diameters. It is
found that more adsorbed quantity of volatile atequilibrium can be obtained with lower
temperature, higher pressure andsmaller particle diameter. Underpolymerization conditions,
the adsorbed quantity at equilibrium is more strongly affected by temperature thanby
pressure, and if the diameter distribution of particles is very wide the effect of diameter
on the adsorbedquantity must be taken into consideration. With theoretical analyses a model
is proposed for calculating theadsorbed quantity of volatile at equilibrium.

关键词: adsorption equilibrium;adsorption model;polyethylene process;condensed modeminipage