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Mathematical description of the kraft recovery boiler furnace

DOI: 10.1016/s1570-7946(03)80249-3
  • Chemistry
  • Computer Science
  • Mathematics


Abstract It is proposed a new (hybrid) approach for the mathematical description of the black liquor burning process in an industrial recovery boiler furnace. The system is divided into four different regions and the concentration of each chemical substance in each region is calculated by direct minimisation of the corresponding Gibbs free energy. The particulate formation is separately described through a neural network trained with industrial data. The resulting hybrid model satisfactorily reproduces black liquor burning data obtained from literature and industrial sources.

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