Effect of Oven Drying and Reactor Temperature on Rice Husk Pyrolysis in a Fixed Bed Reactor

Pious Oluwatomi Okekunle, Olasunkanmi O. Ajayi, Olayinka O. Bolarinwa, Ibraheem O. Alayande, Mustapha A. Fatai

Abstract


This work investigated the effect of different oven drying and furnace temperatures on product yield distribution of rice husk pyrolysis. Rice husk was procured from a rice milling plant in Ogbomoso, South-Western Nigeria and was sundried for 3 days, and then oven dried at different temperatures (60, 75, 90, 105 and 120 ⁰C) for 30 minutes in Chemical Engineering Laboratory, Ladoke Akintola University of Technology, Ogbomoso, Nigeria. The samples were then pyrolysed at different reactor temperatures (400, 500, 600 and 700 °C) with a residence time of 25 minutes. The retort was inserted into the furnace after being fed with the sample. For each run, the reactor temperature was set to be 100 oC higher than the desired temperature in order to compensate for heat loss during retort insertion. Moisture loss was in the range 5.58% (at 60 oC drying temperature) to 9.03% (at 120 oC drying temperature). The yields of tar, gas and char were then obtained after pyrolysis and expressed in percentage of the weight of the initial sample. Tar (liquid), char and gas yields were in the range of 8-12%, 30-50% and 18-58%, respectively at different oven drying and reactor temperatures. Findings showed that char yield was largely influenced by oven drying temperatures at reactor temperature of 700 oC. Results also showed that the yield of liquid can be optimized at reactor temperature of 500 oC while that of gas at 700 oC. Oven drying and reactor temperature conditions strongly influenced the yield of bio-fuels from rice husk pyrolysis.


Keywords


Rice husk, microwave oven drying, biomass, pyrolysis, fixed bed reactor

Full Text:

PDF

References


Shackley, S., Carter, S., Knowles, T., Middelink, E., Haefele, S., Sohi, S., Cross, A., and Haszeldine, S. (2012) Sustainable gasification – biochar systems? A case – study of rice – husk gasification in Cambodia, Part 1: Context, chemical properties, environmental and health and safety issues. Energy Policy 42: 49-58.

McKendry, P. (2002a) Energy production from biomass (Part 1): Overview of biomass. Bioresources Technology 83(1): 37-46.

Mckendry, P. (2002b) Energy production from biomass (Part 2): Conversion technology. Bioresources Technology 83(1): 47-54.

Bridgwater, A.V. (1999) Principles and practice of biomass fast pyrolysis processes for liquids. Journal of Analytical and Applied Pyrolysis 51(1-2): 3-22.

Sukumar, V., Manieniyan, V., and Sivaprakasam, S. (2015) Bio oil production from biomass using pyrolysis and upgrading - A review. International Journal of Chem. Tech. Research 8(1):196 – 206.

Issagulov, A.Z., Kim, V.A., Kvon, S.S., Kulikov, V.Y., and Tussupova, A.U. (2014) Production of technical silicon and Silicon carbide from rice – husk, METABK 53(4): 685-688.

Milovanovic, V. and Smutka, L. (2017) Asian countries in global rice market. Acta Universitatis Agriculturae Et Silviculturae Mendelianae Brunensis 65(2): 679-688.

Merem, E.C., Twumasi, Y., Wesley, J., Isokpehi, P., Shenge, M., Fageir, S., Crisler, M., Romorno, C., Hines, A., Hirse, G., Ochai, S., Leggett, S., Nwagboso, E. (2017) Analyzing rice production issues in the Niger State area of Nigeria’s Middle Belt. Food and Public Health 7(1): 7-22.

Okutani, T. (2009) Utilization of silica in rice hulls as raw materials for silicon semiconductors. Journal of Metals, Materials and Minerals 19(2): 51-59.

Wannapeera, J., Worasuwannarak, N., and Pipatmanomai, S. (2008) Product yields and characteristics of rice husk, rice straw and corncob during fast pyrolysis in a drop-tube/fixed-bed reactor. Songklanakarin J. Sci. Technol. 30(3): 393-404.

Ahmad, K., Ali, M., Ibrahim, A. and Baig, W.M. (2014) Optimising the yield of silicon carbide synthesised from indigenous biomass husk using different catalysts. Journal of Material Science and Engineering 3(3): 1-4.

Lin, K.S., Wang, H.P., Lin, C.–J., and Juch, C.–I. (1998) A process development for gasification of rice husk. Fuel Processing Technology 55:185–192.

Abalaka A.E. (2012) Effect of method of incineration of rice husk ash blended concrete. ATBU Journal of Engineering Technology 5(1): 34-47.

Abrishamkesh, S. Gorji, M., Asadi, H., Bagheri-Marandi, G.H., and Pourbabaee, A.A. (2015) Effect of rice husk biochar application on the properties of alkaline soil and lentil growth. Plant Soil Environ. 61(11): 475- 482.

Hsu, C.-P., Huang, A.- N., and Kuo, H.-P. (2015) Analysis of the rice husk pyrolysis products from a fluidized bed reactor. Procedia Engineering 102: 1183 – 1186.

Noorhaza, A., Norazana, I., Mohd. Kamaruddin, A. H., Hasrinah, H., Roshafima, R. A., Aziatul, N. S., and Umi A. A. (2014) Thermogravimetric analysis of rice husk and coconut pulp for potential biofuel production by flash pyrolysis. The Malaysian Journal of Analytical Sciences, 18(3): 705 – 710.

Kumar, S., Sangwan, P., Dhankar, R., Mor, V., and Bidra, S. (2013) Utilization of rice husk and their ash: A review. Research Journal of Chemical and Environmental Science 1(5): 126-129.

Bronzeoak (2003) Rice husk ash market study. DTI, London, p. 62. In: Shackley, S., Carter, S., Knowles, T., Middelink, E., Haefele, S., Sohi, S., Cross, A., and Haszeldine, S. (2012) Sustainable gasification – biochar systems? A case – study of rice – husk gasification in Cambodia, Part 1: Context, chemical properties, environmental and health and safety issues. Energy Policy 42: 49-58.

Wang, X., Chen, H., Luo, K., Shao, J. and Yang, H. (2008) The influence of microwave drying on biomass pyrolysis. Energy & Fuel 22(1): 67 – 74.

Okekunle, P.O., Adetola, S.O., Itabiyi, O.E., Alayande, I.O., Ogundiran, H.O., and Odeh, K.G. (2016) Experimental investigation of the effect of microwave drying and reactor temperature on product yields from pyrolysis of cassava chaff. Nigerian Journal of Technology 35(4): 874 – 879.

Okekunle, P.O., Watanbe, H., Pattanotai, T., and Okazaki, K.(2011) Numerical and experimental investigation of intra-particle heat transfer and tar decomposition during pyrolysis of wood biomass. Journal of Thermal Science and Technology 6(3): 360-375.

Di Blasi, C. (2008) Modelling chemical and physical processes of wood and biomass pyrolysis. Progress in Energy and Combustion Science 34: 47-90.

Okekunle, P. O. and Osowade E. A. (2014) Numerical investigation of the effect of reactor pressure on biomass pyrolysis in thermally thin regime. International Journal of Chemical and Process Engineering Research 27:12-22.

Yan, Q., Toghiani, H., Yu, F., Cai, Z., and Zhang, J. (2011) Effect of pyrolysis conditions on yield of bio-chars from pine chips. Forest Products Journal 61(5): 367-371.

Jindo, K., Mizumoto, H., Sawada, Y., Sanchez-Monedero, M.A., and Sonoki, T. (2014) Physical and chemical characterization of biochars derived from different agricultural residues, Biogeosciences 11(3): 6613–6621.


Refbacks

  • There are currently no refbacks.


Copyright (c) 2020 Pious Oluwatomi Okekunle

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