Date of Publication:2022-10-06

Journal:化工学报

Affiliation of Author(s):建设工程学部

Volume:70

Issue:8

Page Number:2946-2953

ISSN No.:0438-1157

Abstract:The effects of intrinsic minerals and three inorganic components (CaO, Fe2O3 and Al2O3) on the semi-coke combustion reactivity of maceral with different reducibility were investigated on a thermogravimetric analyzer. The results indicated that the combustion reactivity of maceral chars from the weakly reductive coal is better than that from the reductive coal. The inherent mineral matter of vitrinite reduces the ignition temperature of vitrinite chars, while the inherent mineral matter of inertinite shows obvious inhibition effect on their chars combustion reaction. Three added mineral matter inhibit the combustion reaction of maceral chars from the reductive coal, and the relative inhibiton sequence could be described as follows: Al2O3>CaO>Fe2O3, while CaO has a little catalytic effect on the combustion reaction of maceral chars from the weakly reductive coal, and the inhibition effect of Al2O3 and Fe2O3 on the combustion reaction of maceral chars from the weakly reductive coals is lower than that on the combustion reaction of maceral chars from the reductive coal.

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