Interaction and kinetic analysis for coal and biomass co-gasification by TG–FTIR

Chen, Xu; Hu, Song; Xiang, Jun; Zhang, Liqi; Sun, Lushi; Chao, Shuai; Chen, Qindong; He, Limo; Edreis, Elbager M.A.

doi:10.1016/j.biortech.2013.11.101

Cited by 95 publications

(40 citation statements)

References 27 publications

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“…The interaction between coal and biomass during thermal co-conversion is an issue yet to be solved; some devolatilization and pyrolysis results of coal and biomass blends have revealed no or very little synergy between the two fuels [44][45][46][47][48][49][50][51][52][53][54][55][56] while others have revealed significant synergy [43,[57][58][59][60][61][62][63][64][65][66][67][68][69][70][71]. It is important to segregate the synergistic effect from the catalytic effect engendered by biomass mineral matters; most of the studies that found synergistic effects between the two fuels failed to segregate these two phenomena.…”

Section: Feedstockmentioning

confidence: 99%

“…However, the existence of non-catalytic synergistic effect remains controversial. Some researchers [43,[57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][101][102][103][104][105][106][107][108] have shown evidence of synergy between biomass and coal while others [44][45][46][47][48][49][50][51][52][53][54][55][56] found no evidence of synergy. Trevor and Kandiyoti [109] pointed out that the way biomass components are intermeshed affects the distribution of pyrolysis products.…”

Section: Synergy Through Other Mechanismsmentioning

confidence: 99%

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A Review of Thermal Co-Conversion of Coal and Biomass/Waste

2014

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Abstract:Biomass is relatively cleaner than coal and is the only renewable carbon resource that can be directly converted into fuel. Biomass can significantly contribute to the world's energy needs if harnessed sustainably. However, there are also problems associated with the thermal conversion of biomass. This paper investigates and discusses issues associated with the thermal conversion of coal and biomass as a blend. Most notable topics reviewed are slagging and fouling caused by the relatively reactive alkali and alkaline earth compounds (K 2 O, Na 2 O and CaO) found in biomass ash. The alkali and alkaline earth metals (AAEM) present and dispersed in biomass fuels induce catalytic activity during co-conversion with coal. The catalytic activity is most noticeable when blended with high rank coals. The synergy during co-conversion is still controversial although it has been theorized that biomass acts like a hydrogen donor in liquefaction. Published literature also shows that coal and biomass exhibit different mechanisms, depending on the operating conditions, for the formation of nitrogen (N) and sulfur species. Utilization aspects of fly ash from blending coal and biomass are discussed. Recommendations are made on pretreatment options to increase the energy density of biomass fuels through pelletization, torrefaction and flash pyrolysis to reduce transportation costs.

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Section: Feedstockmentioning

confidence: 99%

Section: Synergy Through Other Mechanismsmentioning

confidence: 99%

A Review of Thermal Co-Conversion of Coal and Biomass/Waste

2014

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“…Biomass gasification technology is one of the major biomass energy conversion technologies (Porbatzki et al 2011). It has broad application prospects because of its high conversion efficiency, simple usage, inexpensiveness, and the fact that it is free from the restrictions of fuel regionalism (Xu et al 2014). Co-gasification of biomass and coal can be regarded as a bridge to the use of both fossil and renewable fuels; the synergistic effect makes the oil tar burn completely, which reduces pollution (Brown and Liu 2000).…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Co-Gasification of Low-Quality Lean Coal and Biomass

Zhu

Zhou

et al. 2015

BioResources

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The co-gasification behaviors of composite samples of biomass and lean coal were investigated under a CO2 atmosphere. The composite behaviors were determined based on thermogravimetric analysis and the CoatsRedfern method. These methods were used to analyze the kinetics of the processes. The results showed that the temperature ranges of the lean coal, biomasses, and the gasification ability of each biomass were different, and the coordination effects of each biomass varied. The addition of alkali metals had little influence on the pyrolysis efficiency and the peak temperature of composite samples of soybean stalk and lean coal, but it did promote gasification. In the processes of pyrolysis and gasification, composite samples of soybean stalk and lean coal exhibited lower activation energies than unmixed samples, but there was no significant enhancement with the extra alkali metal.

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“…Thus, both E and A can be determined by the slope and intercept of the line (Ahamad and Alshehri, 2012;Jiang et al, 2010;Xu et al, 2014).…”

Section: Analysis Of Kinetics Parametersmentioning

confidence: 99%