Design and Development of Briquetting Machine for Eco-Friendly Fuel
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Date
2010
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Publisher
MPUAT, Udaipur
Abstract
Rajasthan having total surplus biomass potential of 40 MT with a contribution of mustard stalks of 7.1 MT. As mustard was not useful for any other purpose it was very difficult to dispose the mustard stalk waste. The regular practise of burning is not an efficient solution thus the Mustard stalk was utilised for production of briquettes as an energy fuel. The crops to residue ratio of different biomass were also listed in the research carried out. The properties study of mustard stalk was carried out for the details estimation of characteristics of mustard stalks. The mustard stalk characteristic like bulk density, calorific value and angle of repose were carried out during the study was 158 kg/m3, 3765.23 kcal/kg, 39.8 degree. It was observed that the raw mustard stalk having a coefficient of friction of 0.531 on mild steel and aluminium sheet was less than the values on stainless steel, galvanised iron and plywood sheet. The thermo-gravimetric analysis of mustard was giving the details of weight loss of material with time and temperature for mustard stalk. The lignin content of the mustard was found to be 23.5 % with cellulose of 52.5 %. The ultimate and proximate analyses of mustard stalk were also done during the study.
The screw press briquetting machine was design and developed for 150 kg/h capacity. Detail design calculation of screw, drive power required, pulley design, and required speed were done for screw press briquetting machine. The drive power of 20 hp motor was used to get the 7.1 time denser briquette through this developed screw press. Beside of this the preheating system design was also done for the mustard stalk and parameter for the desired temperature and speed of conveyer. Biomass heating was an efficient route of lignin flow in case of binder less briquetting thus the mustard stalk was heated to the temperature of 120OC in the preheater followed by the die heating during briquetting.
The briquette of 80 mm diameter and 110mm length was produced with a 25 mm concentric hole in between using developed screw press. The characteristics of mustard stalk briquette produced were also carried out at the end of the study. The properties of briquettes like bulk density, durability, radial compressive strength, water resistance and shatter index were found to be of 1134 kg/m3, 70.22 %, 15.75 kgf/mm2, 50 min, and 4200. It was also found that the briquette formed during the experimentation was stable.
The briquetting machine efficiency, heater efficiency and volumetric energy density were calculated on the basis of power consumed and the out put energy, and volumetric change in density after briquetting. The economic analysis of the briquetting process was evaluated for the net present worth, benefit to cost ratio and payback of the system and found to be Rs. 579882.6 /- after 20 years, 1.29 and 1.86 years respectively
Description
Design and Development of Briquetting Machine for Eco-Friendly Fuel
Keywords
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Citation
Mandwe and Sharma, 2010