Jouni Tummavuori , Hannu Venäläinen, Timo Nyrönen

Termogravimetrian käyttömahdollisuudet polttoainetutkimuksessa. Osa I. Sovellutusmahdollisuuksista turvetutkimuksissa

Tummavuori J., Venäläinen H., Nyrönen T. Termogravimetrian käyttömahdollisuudet polttoainetutkimuksessa. Osa I. Sovellutusmahdollisuuksista turvetutkimuksissa.

Tiivistelmä

This study involves the determination of some kinetic parameters of the various peat samples. Also, the effect of the peat type and the degree of the humification to the kinetics of the pyrolysis was of interest. These experiments were performed both in the inert gas and in the air nitrogen gas mixture. The energy of the activation as well as the rate constant clarify the changes of the matter during the pyrolysis. These facts are met, if we want to distinguish the nature and the behaviour of the products formed in the pyrolysis. The kinetic parameters were calculated using two different methods, both giving the similar results. The reference substance employed was cellulose since it is one of the main components of the peat and its pyrolysis is well studied. We conclude, that the pyrolysis of the peat can be investigated assuming the first order kinetics. Further, the differences between the peat types were considerable which leads to the fact, that the selection of the peat type reflects the gaseous products formed during the pyrolysis and is important e.g. in the gasification studies.

Vastaanotettu 31.10.2017 Julkaistu 1.1.1978

Katselukerrat 2647

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