Open AccessInfluence of the Heat Loss on the Performance of a Two-stage Gasification Reactor
Author(s) -
Martino Paolucci,
Carlo Borgianni,
Sonia Panzieri,
Benedetta de Caprariis,
Paolo De Filippis
Publication year - 2021
Publication title -
international journal of geology
Language(s) - English
Resource type - Journals
ISSN - 1998-4499
DOI - 10.46300/9105.2021.15.9
Subject(s) - raw material , exothermic reaction , wood gas generator , waste management , heat of combustion , waste heat recovery unit , solid fuel , nuclear engineering , process engineering , materials science , pulp and paper industry , environmental science , chemistry , thermodynamics , combustion , heat exchanger , organic chemistry , engineering , coal , physics
This paper investigates the gasification efficiency of a two stage gasifier, described in all detail in previous works, as a function of the heat loss across the reactor walls. The behaviour of the reactor was simulated using a simple mathematical model already reported in previous papers. The examined heat loss ranges from 0% of the heat produced by the exothermic reactions into the reactor, up to 20%. Calculations have been performed by keeping constant both the injected total oxygen and its partition between the two stages, while different feedstocks have been used, such as landfill gas, municipal solid waste (MWS), willow and rice straw. The results of calculation show that the gasification efficiency at fixed oxygen injection is greatly influenced by the feedstock. The elaboration of the obtained data indicates also that the trend of the gasification efficiency vs. heat loss is a function of the high heating value of the feedstock and of the ratio between the oxygen present into the reactor (injected + the one of the feedstock) and the stoichiometric oxygen necessary to transform the feeding into carbon dioxide and steam.