Modeling residence time distributions for single screw extrusion process

Yeh, An‐I; Jaw, Yih-Mon

doi:10.1016/s0260-8774(98)00001-6

Cited by 48 publications

(57 citation statements)

References 20 publications

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“…Friction is the main mode of material conveyance in a single screw extruder (Yeh & Jaw, 1998). Because water acts as lubricant in the extruder (Hayasi et al, 1992), an increase in moisture content resulted in decrease in the friction between the material, screw shaft, and barrel ) resulted in less disturbance to cell wall of the corn stover.…”

Section: Effect Of Independent Variables On Sugar Recoveriesmentioning

confidence: 99%

Application of Response Surface Methodology to Optimize Alkali Concentration, Corn Stover Particle Size, and Extruder Parameters for Maximum Sugar Recovery

Karunanithy¹,

Muthukumarappan²

2011

Biofuel Production-Recent Developments and Prospects

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Section: Effect Of Independent Variables On Sugar Recoveriesmentioning

confidence: 99%

Application of Response Surface Methodology to Optimize Alkali Concentration, Corn Stover Particle Size, and Extruder Parameters for Maximum Sugar Recovery

Karunanithy¹,

Muthukumarappan²

2011

Biofuel Production-Recent Developments and Prospects

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“…Parameter values of P and d at different channel depth for 500 mm mixing length Table 10. Shear rate of S2 screw at different screw speeds (12) As described by Wolf, during mixing glass fiber length was reduced by undergoing three interactions of fiber-equipment, fiber-fiber, and fiberpolymer [6]. Normally shear force of glass fiber applied by the melt would not bring glass fiber to be fractured because actual shear force resulted by the melt was far less than theoretical shear force derived by Salines as described above.…”

Section: Influence Of Shear Forcementioning

confidence: 92%

“…So that the force of glass fiber underwent during the process of LFT-PP extrusion would be about 10M Pa, as shown by Equation (11): (11) Salinas et al posted essential condition presented by Equation (12) that fiber would fracture during the compounding [17]. As for glass fiber, = 10 6 MPa.…”

Section: Influence Of Shear Forcementioning

confidence: 99%

“…The flow in CSTR was taken for mixed flow and the flow in PFR was considered as plug flow, so Yeh et al introduces d, the fraction of dead volume in CSTR into Wolf model, so the model named Yeh model is expressed by Equation (9) [15]: (9) The parameters d and P of above two models can be obtained by non-linear regression calculation, and were associated with fiber degradation.…”

Section: Rtd Modelmentioning

confidence: 99%

“…An alternative analysis is the construction of a flow pattern with conceptual models. The most widely reported models include a combination of plug flow and mixed flow [12][13]. Mean residence time (MRT) was used for evaluating the extent of fiber fracture, but no paper was reported using the RTD model for the evaluations between processing condition, machine design and fiber fracture.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Relationship between fiber degradation and residence time distribution in the processing of long fiber reinforced thermoplastics

Zhuang¹,

Ren²,

Zong³

et al. 2008

Express Polym. Lett.

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Abstract. Long fiber reinforced thermoplastics (LFT) were processed by in-line compounding equipment with a modified single screw extruder. A pulse stimulus response technique using PET spheres as the tracer was adopted to obtain residence time distribution (RTD) of extrusion compounding. RTD curves were fitted by the model based on the supposition that extrusion compounding was the combination of plug flow and mixed flow. Characteristic parameters of RTD model including P the fraction of plug flow reactor (PFR) and d the fraction of dead volume of continuous stirred tank reactor (CSTR) were used to associate with fiber degradation presented by fiber length and dispersion. The effects of screw speed, mixing length and channel depth on RTD curves, and characteristic parameters of RTD models as well as their effects on the fiber degradation were investigated. The influence of shear force with different screw speeds and variable channel depth on fiber degradation was studied and the main impetus of fiber degradation was also presented. The optimal process for obtaining the balance of fiber length and dispersion was presented.

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Experimental Pretreatment Systems from Laboratory to Pilot Scale

Elander

2013

Aqueous Pretreatment of Plant Biomass for Biological and Chemical Conversion to Fuels and Chemicals

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Modeling residence time distributions for single screw extrusion process

Cited by 48 publications

References 20 publications

Application of Response Surface Methodology to Optimize Alkali Concentration, Corn Stover Particle Size, and Extruder Parameters for Maximum Sugar Recovery

Application of Response Surface Methodology to Optimize Alkali Concentration, Corn Stover Particle Size, and Extruder Parameters for Maximum Sugar Recovery

Relationship between fiber degradation and residence time distribution in the processing of long fiber reinforced thermoplastics

Experimental Pretreatment Systems from Laboratory to Pilot Scale

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