EVALUATION OF DEVELOPED OILSEED EXPRESSION MACHINE

El-Nakib, Abd El-Kader A.; Abdel Mawla, H. A.; Rasmy, A. M.; Geasa, M. M.

doi:10.21608/mjae.2012.101192

EVALUATION OF DEVELOPED OILSEED EXPRESSION MACHINE

Document Type : Original Article

Authors

¹ Prof., of Agric. Eng., Fac. of Agric. Eng.., Al-Azhar University, Egypt.

² Prof. of Agric. Eng., Fac. of Agric., Eng. Dep. Al-Azhar University. Assiut branch, Egypt.

³ Assoc. Prof., of Agric. Eng., Fac. of Agric. Eng.., Al-Azhar University, Egypt.

⁴ Assoc. Lect., of Agric. Eng., Fac. of Agric., Eng. Dep. Al-Azhar University. Assiut branch, Egypt.

10.21608/mjae.2012.101192

Abstract

The aim of this study was to develop and test an oilseed expression machine for oil production. The tested parameters were: (1) Machine setting of one stage and double stage expression (2) Screw speeds of 30, 50, 70 and 90 rpm (3) Cake output clearance 0.5, 0.8, 1.1 and 1.4 mm (4) for double stage expression setting intermediate choke gap of 0.6, 0.8, 1.0 and 1.2 mm. and (5) Moisture content of oilseed 6 %, 8% and 10%.
Results obtained increasing in expression efficiency by: reducing the choke gap, reducing the screw rotational speed, increasing seeds moisture-content to 8% (d.b),and using double stage machine.
Maximum oil expression efficiency was 86% at 0.5 mm choke gap, 30 rpm screw rotational speed, 6% moisture content and two stage machine setting with 0.6 mm intermediate choke gap. On the other hand, minimum oil expression efficiency was 52% at 1.4 mm choke gap, 90 rpm screw rotational speed, 6% moisture content and single stage machine.
The evaluated parameters affecting the expression process, oil productivity, expression efficiency, expressed oil temperature, oil production cost are discussed in the paper.

Main Subjects

Processing Engineering of Agricultural Products

References

Al-Ashry, A. (1999) Development of a sample machine for expression of some oilseeds. Ph.D. Th., Uni. of Monofia.

Amin I. A., F. A. Shafik, And N. Y. Soliman. (2007). Production expansion potentials for edible corn oil in Egypt. National Research Centre, Egypt. J. of App. Sci. Res., 3(1): 50-55.

Awady, M. N., )1978(, Engineering of tractors and agricultural machinery, Text Bk.,Col. Ag., Ain-Shams U., 5^Th Ed.:164-167. ( In Arabic updating 1998 ).

Beerens, P. (2007) Screw-pressing of jatropha seeds for fuelling purposes in less developed countries. M.Sc. Th. Eindhoven. Uni. of Tech. Netherlands: 1-2

Singh Kk, D. P. Wiesenborn , K. Tostenson And N. Kangas (2002) Influence of moisture content and cooking on screw pressing of crambe seed. J. Am. Oil Chem. Soc. USA (79):165–170.

Sivakumaran, K., And J. W. Goodrum (1987). Influence of internal pressure on performance of a screw expeller. ASAE (30): 1167–1171.

Willems, P. (2007) Gas assisted mechanical expression of oilseeds: Ph.D. Th., Uni. of Twente, Netherlands: 32.