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Comparison of the Gasification of Cashew Wood and Cashew Nut Shells Chars with CO2 and Steam

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Author Affiliations

  • 1Département de Physique, BP.523 Ziguinchor, Sénégal, Université Assane Seck de Ziguinchor, Ziguinchor, 523, Senegal
  • 2Département de Physique, BP.523 Ziguinchor, Sénégal, Université Assane Seck de Ziguinchor, Ziguinchor, 523, Senegal and Centre de recherche de Royallieu, EA 4297-TIMR, Université de Technologie de Compiègne, Compiègne, BP20529 – 60205, France
  • 3Centre de recherche de Royallieu, EA 4297-TIMR, Université de Technologie de Compiègne, Compiègne, BP20529 – 60205, France
  • 4Centre de recherche de Royallieu, EA 4297-TIMR, Université de Technologie de Compiègne, Compiègne, BP20529 – 60205, France

Res.J.chem.sci., Volume 6, Issue (9), Pages 11-18, September,18 (2016)

Abstract

Cashew (biomass) is a fairly common plant in the tropics, while pyrolysis/gasification seems to be the best option for his recovery. Experimental gasification with carbon dioxide and steam in a fixe bed reactor studies are reported for a highly reactive South Senegal cashew wood, and cashew nut shells chars. Gasification tests were made in two atmospheres and at three different temperatures between 950°C, 1000°C, and 1050°C. The latter is done in order to investigate the effect of reactivity of these char samples. Gasification rate of carbon conversion at a given temperature is found to be dependent to the gasifying agent, suggesting the use of three models such as the volume reaction model (VRM) which is found to be the more suitable model compared to the shrinking core model (SCM) and the random pore model (RPM). The results show that in the presence of CO2 and water vapor, the activation energies of the cashew wood is greater than those obtained for cashew nut shells. However, by using an empirical function computing time of reaction, the experimental results show that the kinetic reaction of the cashew nut shells with steam and CO2 is faster compared to cashew wood; probably due to the nutshells liquid content (CNSL). In addition, results showed that char-steam reactivity is different to char-CO2 reactivity.

References

  1. Wan Nor R.W.I., Mohamed W.M.H., Mohd A.Y. and Taufiq-yap Y.H. (2012)., A review on bio-oil production from biomass by using pyrolysis method., Renew. Sust. Energ. Rev., 16, 5910-5923.
  2. Rabany C., Rullier N. and Ricau P. (2015)., Analysis of cashew production, processing and trade in Africa. The African cashew sector in 2015: General trends and country profiles., http://www.rongead.org/IMG/pdf/african_cashew _market_review_rongead_ica_2015.pdf. November 25, 2015.
  3. Kentaro U., Tomoaki N. and Kunio Y. (2012)., Analysis of an updraft biomass gasifier with high temperature steam using a numerical model., Appl. Energ., 90, 38-45.
  4. Van de Steene L., Tagutchou J.P., Mermoud F., Martin E., and Salvador S. (2010)., A new experimental continuous fixed bed reactor to characterize wood char gasification., Fuel, 89, 3320-3329.
  5. Tingting L., Zhang L., Dong L. and Chun-Zhu L. (2014)., Effects of gasification atmosphere and temperature on char structural evolution during the gasification of Collie sub-bituminous coal., Fuel, 117, 1190-1195.
  6. Leteng L. and Michael S. (2013)., Investigation of the intrinsic CO2 gasification kinetics of biomass char at medium to high temperatures., Appl Energ, 109, 220-228.
  7. Susanna N., Alberto G.B. and Pedro O. (2013)., Gasification of char from dried sewage sludge in fluidized bed: Reaction rate in mixtures of CO2 and H2O., Fuel, 105, 764-768.
  8. Sansha C., Hein W.J.P.N., John R.B. and Raymond C.E. (2013)., Improved reactivity of large coal particles by K2CO3 addition during steam gasification., Fuel Process. Technol., 114, 75-80.
  9. Thilakavathi M., Nader M. and Pulikesi M. (2011)., Reaction kinetics and mass transfer studies of biomass char gasification with CO2., Chem. Eng. Sci., 66, 36-41.
  10. Jie Wang, Mingquan J., Yihong Y., Yanmei Z. and Jianqin C. (2009)., Steam gasification of coal char catalyzed by K2CO3 for enhanced production of hydrogen without formation of methane., Fuel, 88, 1572-1579.
  11. Velmurugan A., Loganathan M. and James G.E. (2014)., Experimental investigations on combustion, performance and emission characteristics of thermal cracked cashew nut shell liquid (TC-CNSL)–diesel blends in a diesel engine., Fuel, 132, 236-245.
  12. Dong K.S., Sun Ki L., Min Woong K., Jungho H. and Tae-U.Y. (2010)., Gasification reactivity of biomass chars with CO2., Biomass. Bioenerg., 34, 1946-1953.
  13. Guizani C., Escudero S.F.J. and Salvador S. (2013)., The gasification reactivity of high-heating-rate chars in single and mixed atmospheres of H2O and CO2., Fuel, 108, 812-823.
  14. Qinglong X., Sifang K., Yangsheng L. and Hui Z. (2012)., Syngas production by two-stage method of biomass catalytic pyrolysis and gasification., Bioresource Technol., 110, 603-609.
  15. Piyali D. and Anuradda G. (2003)., Bio-oil from pyrolysis of cashew nut shell- a near fuel., Biomass and Bioenergy, 25, 113-117.
  16. Tippayawong C.C., Promwangkwa A. and Rerkkriangkrai P. (2011)., Gasification of cashew nut shells for thermal application in local food processing factory., Energy for Sustainable Development, 15, 69-72.
  17. Li X.T. and Grace J.R. (2004)., Biomass gasification in a circulating fluidized bed., Biomass. Bioenerg., 26, 171-193.
  18. McKendry Peter (2002)., Energy production from biomass (part 1): overview of biomass., Bioresource Technol., 83, 37-46.
  19. Roberts D.G and Harris D.J. (2007)., Char gasification in mixtures of CO2 and H2O: competition and inhibition., Fuel, 86(17–18), 2672-2678.
  20. Erich F. and Lalit M.M. (1998)., Carbon Reinforcements and Carbon/Carbon Composites., Technology & Engineering, 281-282.
  21. Octave Levenspiel (1999)., Chemical Reaction Engineering., Industrial & engineering chemistry research, Third Edition, John Wiley & Sons, New York, 566-582, ISBN. 0-471-25424-X.
  22. Gaye Ö.Ç., Hayrettin Y. and Güniz G.A. (2007)., Physical and chemical properties of selected Turkish lignites and their pyrolysis and gasification rates determined by thermo-gravimetric analysis., J Anal Appl. Pyrol., 80, 262-268.
  23. Hyo J.J., Sang S.P. and Jungho H. (2014)., Co-gasification of coal–biomass blended char with CO2 at temperatures of 900–1100°C., Fuel, 116, 465-470.
  24. Gangil S. (2014)., Dominant thermogravimetric signatures of lignin in cashew shell as compared to cashew shell cake., Bioresource Technology, 155, 15-20.