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Article Dans Une Revue Chemical Engineering Science Année : 2000

Residence time distribution in a corotating twin-screw extruder

Résumé

A modeling study for the polymer flow and mixing in a corotating twin-screw extruder is presented. The residence time distribution (RTD) in a fully intermeshing corotating twin-screw extruder was measured, using iron powder as tracer, and an LDPE as flow material. Pulse-type input signal experiments were performed in different working conditions. To fit the experimental data obtained on two different screw profiles, the one- and two-parameter flow models described in literature were tested. The best fitting of the experimental RTD curves was obtained by using a delayed tanks in series model with internal recirculation, or a delayed axial dispersion model. This is consistent with the physical characteristics of the flow in a fully intermeshing corotating twin-screw extruder.

Dates et versions

hal-01703131 , version 1 (07-02-2018)

Identifiants

Citer

Jp Puaux, G Bozga, A Ainser. Residence time distribution in a corotating twin-screw extruder. Chemical Engineering Science, 2000, 55 (9), pp.1641-1651. ⟨10.1016/S0009-2509(99)00430-3⟩. ⟨hal-01703131⟩
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