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Improved Screw Design for Rice Husk Briquette Machine

Md. Ahiduzzaman
Scientific Officer
Farm Machinery and Postharvest Technology Division, Bangladesh Rice Research Institute, Gazipur-1701.

Dr. MA Bqui
Chief Scientific Officer
Farm Machinery and Postharvest Technology Division, Bangladesh Rice Research Institute, Gazipur-1701.

Abstract/ Executive Summary:

Comparative performance of improved screw and traditional screw was evaluated in the research workshop, BRRI. The production rate using improved and traditional screw was found 123.48 kg/hr and 81.87 kg/hr respectively. Good quality briquette was produced successfully with improved screw for 16 hours. Then the briquette was broken into small pieces. Screw life of improved screw is almost double than that of traditional screw. In terms of energy consumption about 55% of energy can be saved using the improved system due to optimum die heating. The improved screw system provided clean and less smoky environment.

Keywords: Electric heater, Electricity consumption, Fuel, Briquette,Screw, Energy consumption, Environment

Location: FMPHR Research Workshop, Gazipur

Start Date: 01-07-2003

End Date: 30-06-2004

Program Area: Farm Mechanization

Commodity: Rice mill

Objectives:

1. To reduce/optimise the energy use during the production process of Briquette

2. To improve the screw life for making briquettes with husk of parboiled rice

Methodology:

A new improved screw was made with hot die steel and with tungsten carbide tip. The traditional screw was made with mild steel and hard-faced with hard craft arc rod (BOC Bangladesh Limited). The screw length was 496 mm. At starting end shaft diameter was tapered to 35 mm and at the finishing end to 21 mm. The numbers of flight were 7. The performance data of traditional screw was collected from the local briquette machine at Kaliakoir, Gazipur. Performance test was conducted in the FMPHT division laboratory to evaluate the performance of improved screw than that of traditional screw. Parboiled husk containing moisture content 9.32% to 10.44% was used to produce briquette. Data on briquette production, required energy, density of briquette and crushing strength were collected at 1 hour intervals. The non-linear regression model and coefficient of determinant (R2) were determined using MS Excel software.

Source of Information: BRRI Annual Research Review 2003-04

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

• Good quality briquette was produced successfully with new improved screw for 16 hours long • Screw life of improved screw is almost double than traditional system. • About 55% of energy can be saved using the improved system due to optimum die heating and a higher production rate in comparison with commercial use • Usage of improved screw provided less smoky work environment

Knowledge Management: Report/Proceedings