10.1186/2251-7715-1-6

Performance analysis of a co-gasifier for organic waste in agriculture

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  • Abtin Ataei*1,
  • Alireza Azimi2,
  • Sahand Behboodi Kalhori2,
  • Maryam Foroughi Abari3,
  • Hadi Radnezhad3,
  1. Department of Energy Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
  2. Department of Mechanical Engineering, Power and Water University of Technology, Tehran, Iran
  3. Department of Environmental Science, Islamic Azad University, Khorasgan Branch, Isfahan, Iran

Received: 2012-06-30

Accepted: 2012-06-30

Published in Issue 2012-09-14

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Ataei, A., Azimi, A., Behboodi Kalhori, S., Foroughi Abari, M., & Radnezhad, H. (2012). Performance analysis of a co-gasifier for organic waste in agriculture. International Journal of Recycling of Organic Waste in Agriculture, 1(1). https://doi.org/10.1186/2251-7715-1-6
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Abstract

Background

Agricultural waste has been proposed as an alternative energy resource to meet fossil fuel crisis, green house emission, and other environmental impacts worldwide. In Iran, rice husk and bagasse are main resources of biomass which can be used to produce syngas. This paper deals with a simplified model of combined gasification of coal and biomass processes considering chemical equilibrium.

Results

It should be noticed that the CO2 which is produced from agricultural waste gasification is natural because the biomass absorbs CO2 from nature and gives it back after gasifying; however, mixing agricultural waste with coal leads to enrich syngas quality and gasifier efficiency.

Conclusions

In this regard, an advanced coding was developed to simulate the thermodynamics of the co-gasifier and to find the produced syngas composition. The effects of moisture content, steam-to-biomass ratio, and gasifier temperature are then discussed on the system performance. Additionally, co-gasification of rice husk/coal was compared with co-gasification of bagasse/coal. The results indicated that adding coal to biomass increases lower heating value of syngas from 4,694 kJ/Nm3 to 5,321 kJ/Nm3 and gasifier efficiency from 71.29% to 77.85%.

Keywords

  • Agricultural waste,
  • Bagasse,
  • Co-gasification,
  • Performance analysis,
  • Rice husk
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