Experimental evaluation of a 35 kVA downdraft gasifier

Keche, Ashok J.; Rao, G. Amba Prasad

doi:10.1007/s11708-013-0247-9

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…Different species have different composition of Syngas after gasification. There are different types of Indian biomass like Bamboo, Gulmohur, Dimaru, Shisham/Sesame, Neem wood [20]- [21] Babul wood [22], Mango Wood, Tung shells [23] Bagasse, Jatropha shells [24], Pongamia residue [25], garden waste [26] are considered for study by the researchers. Still a lot of agricultural by-products, forest and processing industry wastes are required to examine.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Rich Product Gas from Air–Steam Gasification of Indian Biomasses with Waste Engine Oil as Binder

Sharma¹,

Gupta²,

Pandey

2022

Waste Biomass Valor

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Present study concerns with the production of H2 rich product gas by thermochemical energy conversion having biomass gasification as a route for the four biomasses i.e., Kasai Saw Dust, Lemon Grass, Wheat Straw and Pigeon Pea Seed Coat. The biomasses are from the family of woody biomass, grasses, agricultural waste and food process industry wastes. Waste engine oil as an additive is used, which also acts as a binder. Air gasification and Air-steam gasification is applied and compared for product gas composition, hydrogen yield and other performance parameters like lower heating value, energy yield. Product gas constituents, hydrogen production is examined with different steam to biomass ratio (S/B ratio) and equivalence ratio. The equivalence ratio varies from 0.20-0.40 and the steam to biomass ratio varies between 0-4. The waster engine oil is mixed with the biomasses with different percentage of 5 and 10 wt%. For enhancement of feedstock quality palletization process is applied. The H2 yield is greatly affected by the equivalence ratio. Results show maximum H2 production and higher calorific value of product gas at an air to fuel of 0.26 for all the biomass pallets. Also, the S/B ratio observed as important aspect for hydrogen enrichment. Hydrogen yield is maximum at 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 and will be beneficial for small scale hydrogen-rich syngas production considering the central Indian region originated biomasses. Statement of Novelty (SON):Research work belongs to eco-friendly use of rarely studied Indian biomass pallets. Equivalence air to fuel ratio (E/R ratio), steam to biomass ratio (S/B ratio) and waste engine oil as additive have been considered to upgrade H2 content and Calorific Value (CV) of the product gas. Novelty of work include use of waste engine oil as additive to make biomass pallets.

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Section: Introductionmentioning

confidence: 99%

Hydrogen Rich Product Gas from Air–Steam Gasification of Indian Biomasses with Waste Engine Oil as Binder

Sharma¹,

Gupta²,

Pandey

2022

Waste Biomass Valor

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“…Among all these technologies, pyrolysis and gasification are the technologies which involve a limited supply of oxygen. While pyrolysis is carried out at nearly 20 0:1 air fuel ratio, gasification occurs at about 1.8:1 air fuel ratio [14]. Currently, incineration and gasification are becoming the most used WtE technology [15].…”

Section: Introductionmentioning

confidence: 99%

The Exergy Analysis for the Air Gasification in a Hybrid Fixed Bed Gasifier

Moshi

Kivevele²,

Jande³

2021

CJAST

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Municipal solid waste (MSW) is becoming a concern as population in urban area is increasing. Several disposal methods (landfill and biochemical) have been used. However, waste to energy (WTE) particularly gasification technology is a potential technology for energy recovery. The system is used to convert biodegradable material into syngas under limited gasifying media. This study presents numerical analysis of producer gas for the two air paths in the hybrid fixed bed gasifier (HFBG). It was revealed that the optimum operating condition was achieved when the air ratio at the first air flow path (AIR1) was 0.3. Furthermore, the exergy efficiency of about 81.51% was achieved.

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“…Due to the simplicity and low cost, air is often used as gasification medium [3,4] for distributed power generation. The process usually produces producer gas with 3-6 MJ/Nm 3 of the lower heating value (LHV) at 60%-85% of the cold gas efficiency [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Pilot scale autothermal gasification of coconut shell with CO2-O2 mixture

et al. 2015

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This paper explored the feasibility and benefit of CO 2 utilization as gasifying agent in the autothermal gasification process. The effects of CO 2 injection on reaction temperature and producer gas composition were examined in a pilot scale downdraft gasifier by varying the CO 2 /C ratio from 0.6 to 1.6. O 2 was injected at an equivalence ratio of approximately 0.33-0.38 for supplying heat through partial combustion. The results were also compared with those of air gasification. In general, the increase in CO 2 injection resulted in the shift of combustion zone to the downstream of the gasifier. However, compared with that of air gasification, the long and distributed high temperature zones were obtained in CO 2 -O 2 gasification with a CO 2 /C ratio of 0.6-1.2. The progress of the expected CO 2 to CO conversion can be implied from the relatively insignificant decrease in CO fraction as the CO 2 /C ratio increased. The producer gas heating value of CO 2 -O 2 gasification was consistently higher than that of air gasification. These results show the potential of CO 2 -O 2 gasification for producing high quality producer gas in an efficient manner, and the necessity for more work to deeply imply the observation.

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Experimental evaluation of a 35 kVA downdraft gasifier

Cited by 6 publications

References 16 publications

Hydrogen Rich Product Gas from Air–Steam Gasification of Indian Biomasses with Waste Engine Oil as Binder

Hydrogen Rich Product Gas from Air–Steam Gasification of Indian Biomasses with Waste Engine Oil as Binder

The Exergy Analysis for the Air Gasification in a Hybrid Fixed Bed Gasifier

Pilot scale autothermal gasification of coconut shell with CO2-O2 mixture

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