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Table 1 Overview of selected E-milling process equipment

From: Enzymatic corn wet milling: engineering process and cost model

Description

Detail

Belt conveyer

55.556 kg/s m loading rate/belt width

Pretreatment tanks

3 tanks

6 h residence time

90% volume

55°C

Sulfur burner

600 ppm of SO2 in pretreatment tanks

Enzymatic treatment tank

4 tanks

3 h residence time

75% volume

50°C

4.5 pH

Centrifuge 1

Mill Starch (MS) thickener

7939 l/min throughput

25% (w/w) solids in underflow

Centrifuge 2

Primary separator

3218 l/min throughput

33% (w/w) solids in underflow

Centrifuge 3

Gluten thickener

3112 l/min throughput

17% (w/w) solids in underflow

Centrifuge 4

Clarifier

3945 l/min throughput

28% (w/w) solids in underflow

Hydrocyclone

Last stage of starch washing

4558 l/min throughput

1.3 kg fresh water/kg of dry corn