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A mechanism investigation of synergy behaviour variations during blended char co-gasification of biomass and different rank coals
Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai.
Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai.
Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai.
Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai.
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2018 (Engelska)Ingår i: Renewable energy, ISSN 0960-1481, E-ISSN 1879-0682, Vol. 131, s. 597-605Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Co-gasification reactivity of rice straw and bituminous coal/anthracite blended chars under CO2 atmosphere was evaluated using thermogravimetric analysis, and the influences of coal type and gasification temperature on synergy behaviour variations on co-gasification reactivity as carbon conversions increased were quantitatively studied. Furthermore, the chemical forms and concentrations of AAEM species at different co-gasification conversions were quantitatively analyzed for revealing co-gasification synergy mechanism. The results demonstrate that as conversions increased, synergy behaviour on co-gasification reactivity of rice straw-bituminous coal blends was shown as the weakened inhibition effect firstly and then the enhanced synergistic effect. Moreover, the inhibition effect on co-gasification reactivity of rice straw-bituminous coal blends was sustained up to higher conversion with the increment of gasification temperature. Differing from rice straw-bituminous coal blends, synergistic effect on co-gasification reactivity of rice straw-anthracite blends was obviously enhanced at early stage of co-gasification and started to slowly weaken after reaching the most significant synergistic effect at middle stage of co-gasification. Additionally, it was revealed that synergy behaviour variations on co-gasification reactivity of rice straw-bituminous coal blends were mainly attributed to the combination effects of active K and Ca transformation during co-gasification, while those of rice straw-anthracite blends indicated a good correlation with active K transformation during co-gasification.

Ort, förlag, år, upplaga, sidor
Elsevier, 2018. Vol. 131, s. 597-605
Nationell ämneskategori
Energiteknik
Forskningsämne
Energiteknik
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URN: urn:nbn:se:ltu:diva-70276DOI: 10.1016/j.renene.2018.07.075ISI: 000449892600053Scopus ID: 2-s2.0-85053204682OAI: oai:DiVA.org:ltu-70276DiVA, id: diva2:1237389
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Validerad;2018;Nivå 2;2018-08-08 (andbra)

Tillgänglig från: 2018-08-08 Skapad: 2018-08-08 Senast uppdaterad: 2018-11-30Bibliografiskt granskad

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