Abstract
Production of hydrogen rich product gas through thermochemical energy conversion having the biomass gasification is making significant inroads for green hydrogen fuel generation. In the present work, detailed physical and chemical characterization, air and air–steam biomass gasification of four biomasses i.e., Kasai Saw Dust, Lemon Grass, Wheat Straw and Pigeon Pea Seed Coat from four different group of biomass production system at different steam to biomass ratio, equivalence ratio and with and without binder is analysed. Waste engine oil as an additive/binder is used. Experimental investigation for air and air–steam gasification is applied and compared. Product gas constituents, hydrogen production is examined with different steam to biomass (S/B) ratio and equivalence ratio. The equivalence ratio varies from 0.20 to 0.40 and the S/B ratio between 0 and 4. The waste engine oil (5 and 10 wt%) is mixed with the biomass during palletization. Results show maximum H2 production and HCV of product gas at an air to fuel of 0.26 and 2.4 steam to biomass ratio. This study considers the rarely studied Indian biomasses with waste engine oil as an additive for hydrogen-rich product gas production having small scale biomass gasifier.
Highlights
Energy from biomass can be considered an environmentally friendly and renewable energy sources [1]
The experimentation has been performed in two stages in which the air and steam gasification both are performed for the same biomass and the results are compared based on Syngas composition, hydrogen yield and other performance parameters considering the equivalence ratio (ER) and Steam to Biomass (S/B) ratio as the prime considerations
The temperature is obtained from the thermocouple installed at 15 min during the gasification process of all the four feedstocks Kasai sawdust, lemongrass, wheat straw and pigeon pea seed coat for ER of 0.2, 0.26, 0.33 and 0.398 are depicted in figure 5
Summary
Energy from biomass can be considered an environmentally friendly and renewable energy sources [1]. Biomass energy has a huge potential to come out with the world's energy demand while without increasing the environmental problems. The biomasses can be utilized using the various routes of thermochemical conversion process like combustion, pyrolysis, gasification and liquefaction [2]. The conversion method opted are depends on the key decision factors like category and amount of biomass, required configuration of output fuel, fuel transportation, end-user applications and infrastructure availability. For developing and agriculture-based economy like India with the increasing energy demand creates huge pressure on energy resources. The availability of agricultural wastes, wastes after food processing industry is in huge amount and this should be utilized as much as possible to cope up with energy demand without depending on fossil fuel. In the year 2015, it is estimated in another study around 5×109 metric tons annually by A Kumar et al, 2015 [5]
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