Performance Characterization of Waste to Electric Prototype Uses a Dual Fuel Diesel Engine and a Multi-Stage Downdraft Gasification Reactor

Abstract:

In this research, the characterization of waste to electric prototype performance using dual fuel diesel engine and multi stage downdraft gasification reactor was conducted. Syn-gas was produced by gasification process using downdraft gasification reactor with municipal solid waste feeding. The gasification system consists of feeding system, gasification reactor, gas refinery unit, dual fuel engine generator set and system control. Before entering the gasification reactor, municipal solid waste undergoes pre-treatment process, which consists of crusher, mixing and compacting into pellets of solid waste municipal. Municipal solid waste downdraft gasifier reactor converted pellets municipal solid waste throught drying, pyrolisis, partial oxidation and reduction processes to raw syn-gas. Using syn gas refinery unit, content dust and particles on raw syn gas was cleaned by water in current mode in water scrubber, where its also acts like a cooler unit. Syn gas is further used as fuel in dual fuel diesel engines with an input mechanism using a ventury mixer. The ventury mixer mechanism was used to manage the ratio of syn gas and combustion air. Yanmar diesel engine was modified with dual fuel that used air gas integration model and coupled with generator to resulted electrical power output. Downdraft gasification reactor resulted syn gas with efficiency to 66 % with gas composition CO, CH₄ and H₂ are 18.01%, 1.12% and 12.55% (vol%) and heating value of 4 MJ/Kg. Multistage mechanism can reduce the tar content until only 60 mg/Nm³. Engine performance on dual fuel mode operation with specific fuel consumption 0,17 kg/kwh of diesel fuel and 8 kg/kwh of msw pellets at 80% engine load. Overall, in this dual fuel system, syn gas from gasification process is able to substitute diesel consumption up to 44%.

• Periodical: Materials Science Forum (Volume 964)
• Pages: 80-87
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.964.80
• Online since: July 2019
• Authors: Bambang Sudarmanta*, Sampurno Sampurno, Bambang Arip Dwiyantoro, Satriyo Endra Gemilang, Ary Bachtiar Krisna Putra
• Keywords: Downdraft Gasifier, Dual Fuel, Municipal Solid Waste, Syn Gas Fuel, Ventury Mixer

References

[1] Arena, U., Process and Technological Aspects of Municipal Solid Waste Gasification - A Review, Waste Management 32 (2012) 625–639.

DOI: 10.1016/j.wasman.2011.09.025

[2] Sudarmanta, B., Prabowo and Kadarisman," The performance of fossil diesel-syn gas dual fuel compression ignition engine for 3 kW power generation, Renewable Energy issue, Jurnal Industri, Fakultas Teknologi Industri- ITS, vol 9, 2010, pp.1-6.

[3] Basu, P., Biomass Gasification, Pyrolysis, and Torrefaction Practical Design and Theory, 2nd edition, Elsevier, San Diego, USA, (2013).

[4] Sudarmanta, B., Gafur, A., Saleh, A.R., Dwiyantoro,B.A and Sampurno The effect of the two-stage gasifying agent on biomass downdraft gasification to the gasifier performance,, AIP Conference Proceedings. 1983, 020036 (2018); AIP Publishing.

DOI: 10.1063/1.5046233

[5] Guo, F; Dong, Yuping; Dong, Lei; Gu, Chenlong (2014), Effect of Design and Operating Parameters on The Gasification Process of Biomass in A Downdraft Fixed Bed - An Experimental Study, International Journal of Hydrogen Energy 39 (2014) 5625e5633.

DOI: 10.1016/j.ijhydene.2014.01.130

[6] Saleh, A.R & Sudarmanta, B.,Experimental investigation on multi-stage downdraft gasification: Influence of air ratio and equivalent ratio to the gasifier performance,, AIP Conference Proceedings, 1983, 020036 ( 2018); AIP Publishing.

DOI: 10.1063/1.5046222

[7] Sudarmanta, B., "Dual fuel engine performance using biodiesel and syn-gas from rice husk downdraft gasification for power generation. In this conference proceedings International Seminar on Sustainable Biomass Production and Utilization: Challenges and Opportunities, presented at University of Lampung, Lampung (2009).

[8] Milne, T.A., Evans, R.J., Abatzaglou, N., 1998, Biomass gasifier tar,, Their nature, formation, and conversion. Nopomber, http://dx.doi.org/10.2172/3726.

DOI: 10.2172/3726

[9] Basu, P. Biomass gasification and pyrolysis handbook, (2010).

[10] Saleh, A.R., Sudarmanta, B. & Ependi, D.R. Numerical study of gasification pelletized municipal solid waste using multi-stage air inlet downdraft gasifier,, IOP Conference Series: Materials Science and Engineering, (2018).

DOI: 10.1088/1757-899x/434/1/012177