Combustion kinetic behavior of different ash contents coals co-firing with biomass and the interaction analysis

Luo, Rui; Zhou, Qulan

doi:10.1007/s10973-016-5867-y

Cited by 28 publications

(6 citation statements)

References 42 publications

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“…The co-combustion of coal with biomass (Akram et al 2015;Kumar and Singh 2016;Luo and Zhou 2017) and sludge (Areeprasert et al 2016;Kumar and Singh 2017) have been widely studied and the results verify the feasibility of co-combustion. Due to the demand of MSW disposal, the co-combustion of coal and MSW has also attracted more attention in recent years.…”

Section: Introductionmentioning

confidence: 94%

Co-combustion of municipal solid waste and coal gangue in a circulating fluidized bed combustor

Qin

Zhao

Chen

et al. 2018

Int J Coal Sci Technol

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Mixed incineration of municipal solid waste (MSW) in existing coal gangue power plant is a potentially highefficiency and low-cost MSW disposal way. In this paper, the co-combustion and pollutants emission characteristic of MSW and coal gangue was investigated in a circulating fluidized bed (CFB) combustor. The effect of MSW blend ratio, bed temperature and excess air ratio was detailedly studied. The results show the NO x and HCl emission increases with the increasing MSW blend ratio and the SO 2 emission decreases. With the increase of bed temperature, the CO emission decreases while the NO x and SO 2 emission increases. The HCl emission is nearly stable in the temperature range of 850-950°C. The increase of excess air ratio gradually increases the NO x emission but has no significant effect on the SO 2 emission. The HCl emission firstly increases and then decreases with the increase of excess air ratio. For a typical CFB operating condition with excess air ratio of 1.4, bed temperature of 900°C and MSW blend ratio of 10%, the original CO, NO x , SO 2 and HCl emissions are 52, 181, 3373 and 58 mg/N m 3 respectively.

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Section: Introductionmentioning

confidence: 94%

Co-combustion of municipal solid waste and coal gangue in a circulating fluidized bed combustor

Qin

Zhao

Chen

et al. 2018

Int J Coal Sci Technol

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“…Because of the significant differences in pyrolysis characteristics at different temperatures, the fitting results have large errors and cannot objectively reflect the pyrolysis of the residue, therefore, the pyrolysis process is divided into three stages of low-temperature, midtemperature, and high-temperature for kinetic fitting. Combined with the TG-DTG curve and the tangent method, 47,50 we divide the whole process into three temperature ranges: low-temperature section (250−360 °C), mid-temperature section (360−550 °C), and high-temperature section (550− 800 °C). Table 3 gives the pyrolysis characteristic indexes of FCSs.…”

Section: Resultsmentioning

confidence: 99%

“…As shown in Figure , the pyrolysis process of FCSs can be divided into three stages: − the first stage occurs at around 100 °C. At this stage, water and small molecule gases (N 2 , CO 2 , CH 4 , etc.)…”

Section: Resultsmentioning

confidence: 99%

Analysis of Pyrolysis Performance and Molecular Structure of Five Kinds of Low-Rank Coals in Xinjiang Based on the TG-DTG Method

Shan

Zhao

et al. 2022

ACS Omega

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Taking five coal samples (FCSs) in Xinjiang as the research object, characterizations such as proximate analysis, ultimate analysis, Fourier transform infrared (FTIR), and thermogravimetry-differential thermal analysis (TG-DTG) were carried out. The Coats–Redfern model was used to simulate pyrolysis kinetics of FCSs under different reaction orders (ROs). The results showed that except for HSBC, the R 2 of the other four coal samples are all higher than 0.9, which showed a good correlation effect. FCSs present similar reaction activation energy in the same RO and temperature range. Results of FTIR showed that the hydroxyl groups of FCSs, in the range of 3100–3600 cm–1, were mainly self-associated hydroxyl hydrogen bonds and hydroxyl π bonds, and they occupied over 63%. Among them, the pyrolysis characteristic index (D) of XBC was 4.139 × 10–6, higher than those of other samples, and it showed good pyrolysis performance. Moreover, by reducing the temperature range appropriately, the fitting results showed a better correlation effect.

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“…Combustion Characteristic Index. The ignition temperature and the burnout temperature of five OSs were determined by the tangent method, 41,42 the initial combustion temperature (T i ) reflects the combustion performance of the fuel, the smaller the T i , the easier the fuel will catch fire. The burnout temperature (T f ) represents the final temperature that can be reached when the combustible materials in the fuel are burned out.…”

Section: Resultsmentioning

confidence: 99%

Functional Group Characteristics and Pyrolysis/Combustion Performance of Karamay OS Based on FT-IR and TG–DTG Analyses

Shan

et al. 2021

ACS Omega

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Proximate analysis, ultimate analysis, Fourier-transform infrared spectroscopy (FT-IR), and thermogravimetry−differential thermal analysis characterization were carried out on oily sludge (OS) samples OS1−OS5, from Karamay, Xinjiang, China. The Coast− Redfern model (CRm) was used to simulate the pyrolysis and combustion kinetics of oily samples. The results showed that the peak area percentage of benzene ring trisubstitution of OS5, in the range of 700−900 cm −1 , is close to 75%, corresponding to its high volatile content. Based on the kinetic analysis by the CRm, it is found that the fitting degree of the five samples is better when the reaction order is selected as n = 2, with R 2 close to 1.00 and 2RT/E to 0. Among them, the S N and D W of OS5 are 17.8 × 10 −10 % 2 min −2 °C−3 and 0.10899 × 10 −5 % min −1 °C−2 , respectively, higher than those of other samples, indicating a good combustion performance.

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Combustion kinetic behavior of different ash contents coals co-firing with biomass and the interaction analysis

Cited by 28 publications

References 42 publications

Co-combustion of municipal solid waste and coal gangue in a circulating fluidized bed combustor

Co-combustion of municipal solid waste and coal gangue in a circulating fluidized bed combustor

Analysis of Pyrolysis Performance and Molecular Structure of Five Kinds of Low-Rank Coals in Xinjiang Based on the TG-DTG Method

Functional Group Characteristics and Pyrolysis/Combustion Performance of Karamay OS Based on FT-IR and TG–DTG Analyses

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