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Experimental determination of bed agglomeration tendencies of some common agricultural residues in fluidized bed combustion and gasification

Natarajan, E, (författare)
Centre for New and Renewable Sources of Energy, Department of Mechanical Engineering, Anna University
Öhman, Marcus (författare)
Gabra, M, (författare)
Luleå tekniska universitet
visa fler...
Nordin, A, (författare)
Energy Technology Centre, Department of Inorganic Chemistry, Umeå University
Liljedahl, T, (författare)
Department of Chemical Engineering and Technology, Chemical Technology, Royal Institute of Technology
Rao, A N, (författare)
Centre for New and Renewable Sources of Energy, Department of Mechanical Engineering, Anna University
visa färre...
1998
Engelska.
Ingår i: Biomass and Bioenergy. - 0961-9534 .- 1873-2909. ; 15:2, s. 163-169
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • <p>Ever increasing energy demand and the polluting nature of existing fossil fuel energy sources demonstrate the need for other non-polluting and renewable sources of energy. The agricultural residues available in abundance in many countries can be used for power generation. The fluidized bed technology seems to be suitable for converting a wide range of agricultural residues into energy, due to its inherent advantages of fuel flexibility, low operating temperature and isothermal operating condition. The major ash-related problem encountered in fluidized beds is bed agglomeration which, in the worst case, may result in total defluidization and unscheduled downtime. The initial agglomeration temperature for some common tropical agricultural residues were experimentally determined by using a newly developed method based on the controlled fluidized bed agglomeration test. The agricultural residues chosen for the study were rice husk, bagasse, cane trash and olive flesh. The results showed that the initial agglomeration temperatures were less than the initial deformation temperature predicted by the ASTM standard ash fusion tests for all fuels considered. The initial agglomeration temperatures of rice husk and bagasse were more than 1000°C. The agglomeration of cane trash and olive flesh was encountered at relatively low temperatures and their initial agglomeration temperatures in gasification were lower than those in combustion with both bed materials. The use of lime as bed material instead of quartz improved the agglomeration temperature of cane trash and olive flesh in combustion and decreased the same in gasification. The results indicate that rice husk and bagasse can be used in the fluidized bed for energy generation since their agglomeration temperatures are sufficiently high.</p>

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Energiteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Energy Engineering (hsv//eng)

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Energiteknik
Energy Engineering

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Av författaren/redakt...
Natarajan, E
Öhman, Marcus
Gabra, M
Nordin, A
Liljedahl, T
Rao, A N
Om ämnet
TEKNIK OCH TEKNOLOGIER
TEKNIK OCH TEKNO ...
och Maskinteknik
och Energiteknik
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Biomass and Bioe ...
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