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Journal of Applied Sciences

Year: 2010 | Volume: 10 | Issue: 5 | Page No.: 406-412
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Authors

S. Hassan

Z.A. Zainal

M.A. Miskam

Keywords

Research Article

A Preliminary Investigation of Compressed Producer Gas from Downdraft Biomass Gasifier

S. Hassan, Z.A. Zainal and M.A. Miskam
The developmental work on compressing of producer gas from downdraft gasifier using a single stage normal air compressor has been studied and evaluated. Producer gas, which generated from the downdraft gasification process is basically a combustible gas which can be used for heating purposes and as an alternative fuel to generate power in an Internal Combustion (IC) engine. In the current practice, the producer is used directly from downdraft gasifier mixed with air through a carburetor, mixer or simple T-joint before entering the cylinder of an IC engine. The producer gas has to be consistently generated and supplied to the engine and any shortcomings or unstable gas from the gasifier will affect the quantity and quality of the gas required. In this study, air compressor was used to induce the producer gas from the gasifier at 670 L min-1, compressed it to 7.6 bar gauge pressure and discharged it to a specified flow rate. The discharged flow rate of the producer gas was regulated at 130, 150 and 170 L min-1 consistently at an output pressure of 2.0, 2.5 and 3.0 bar, respectively. It was found that the blue flame producer gas was able to flare continuously through two outlets of producer gas ports after the gasifier and one outlet of producer gas port after the air compressor. The discharged flow rate of producer gas was constant over the entire range set of pressures. Since, the output pressure was regulated higher than the atmospheric, the density of the producer gas proportionally increased with the increase in pressure and the gas flow rate supplied can be controlled to the desired consumption particularly in the IC engines.
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