Reactivity of chars gasified in a fixed bed reactor with the potential utilization of excess process heat

Cempa, M.; Smoliński, A.

doi:10.1016/j.jsm.2017.12.001

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Tytuł artykułu

Reactivity of chars gasified in a fixed bed reactor with the potential utilization of excess process heat

Autorzy

Cempa M. , Smoliński A.

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DOI

10.1016/j.jsm.2017.12.001

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Abstrakty

The aim of the work presented in this paper was to determine the reactivity of chars and their selection for further research purposes concerning coal gasification processes with the utilization of process excess heat. Char reactivity can be defined as the ability of coal to react with such reactants as steam, oxygen or carbon dioxide. Reactivity determines reaction rates and therefore it is a decisive factor relating to the efficiency of combustion and gasification processes. In light of the above, reactivity may be regarded as an important parameter to be considered in the design and operation of the industrial systems of coal processing. The experimental work was conducted by means of a thermogravimetric analyzer (TGA) at temperature ranges of 700, 800 and 900 °C, with oxygen as a gasifying agent. The parameters of maximum reactivity R_max as well as of 50% of the conversion reactivity R₅₀ were calculated. The times t_max and t₅₀ necessary for attaining the maximum reactivity R_max and 50% conversion reactivity R₅₀ were also determined. The correlation between the experimentally determined values of R_max, R₅₀, t_max and t₅₀,additionally the physico-chemical parameters of the coals were examined by means of PCA analysis.

Słowa kluczowe

coal gasification reactivity TGA PCA analysis

zgazowanie węgla reaktywność TGA analiza PCA

Wydawca

Elsevier
Główny Instytut Górnictwa

Czasopismo

Journal of Sustainable Mining

Rocznik

2017

Tom

Vol. 16, iss. 4

Strony

156--161

Opis fizyczny

Bibliogr. 38 poz.

Twórcy

autor

Cempa M.

mcempa@gig.eu

Central Mining Institute, Department of Environmental Monitoring, Plac Gwarków 1, 40-166 Katowice, Poland

autor

Smoliński A.

asmolinski@gig.eu

Central Mining Institute, Department of Energy Saving and Air Protection, Plac Gwarków 1, 40-166 Katowice, Poland

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Uwagi

Opracowanie w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-36a38e12-f668-4a91-84a4-4b39423e19da