Case Study Syngas and Hydrogen by Gasification of Biomass

3 Case Study Syngas and Hydrogen by Gasification of Biomass 

Pyrolysis of Biomass The kinetic parameters of the pyrolysis of solid materials can be determined by means of non-isothermal thermogravimetric measurements. The rate of release of volatile matter may be described by a simple first-order expression  

Example 6.2.2 Transient heating of a biomass particle during pyrolysis 

The equations for transient heat transfer given in Section 3.2.1.5 can be used to derive the heating rate of a biomass/char particle. The particles are heated in the gasifier by heat transfer from the hot surrounding gas and by radiation from the reactor wall. To estimate the thermal resistance by convective heat transfer to the particle compared to the resistance by heat conduction in the particle, we use the Biot number [Eq. (3.2.47)] for a spherical particle  

The second parameter we need to know is the Fourier number [Eq. (3.2.46)]  

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