These vegetable oil & biodiesel processing plants(cotton oil mills) are with big capacity which mostly use in middle-large scale oil mill. They can be divided into two kinds: One is hot processing, which includes steam cooker and oil mill. The steam cooker is used for oilseeds pretreatment before pressing.
Screw Expeller Pressing
Oil expeller of this model is a very popular one of a series of oil expellers, which is a biofuel press with wide usage and good quality.This machine is suitable for the extraction of vegetable oils from such oil-bearing materials as rape seed, peanuts, sesame seed, cotton seed, Soya beans, coconuts, tea seed, sunflower seed, etc.
Screw Oil expeller of this model is a very popular one of a series of oil expellers, which is a biofuel press with wide usage and good quality.

>Name of oil seed	>Capacity (kg/24h)	(%) Oil yield	(%) Residual oil in dry cake
>Rape seed	>9000～10000	33～38	6～7
>Peanuts	>9000～10000	38～45	5～6
>Sesame seed	>6500～7500	42～47	7～7.5
>Cotton seed	>9000～10000	30～33	5～6
>Soya beans	>8000～9000	11～14	5～6
>Sunflower seed	>7000～8000	22～25	8～9.5
>Rice bran	>5500～6500	10～14	7～8

Inside diameter of steaming kettle: φ1220 mm;
3, Stirring shaft speed: 35 rpm;
4, Steam pressure:                      5～6 kg/cm2;
5, Pressing bores:     Front section   φ180 mm; Rear section   φ152 mm;
6, Pressing worm speed:                     8 rpm;
7, Feed shaft speed:                      69 rpm;
8, Pressing time in cape:               2.5 min;
9, Seed steaming and roasting time:     90 min;
10, Max. temperature for seed steaming and roasting: 125-128 ℃;
11, Power demand:                           18.5 kw;
12, Overall dimensions (L×W×H): 2850×1850×3270mm;
13, Weight:                5000 kg


The other is the cold processing. The advantage of this kind of machine is lower temperature when press the seeds. It is about 80 degree, which can protect the nutrition element in the oil.