Fast co-pyrolysis of coal and biomass in a fluidized-bed reactor

Wang, Jianfei; Yan, Qixuan; Zhao, Jing‐Tai; Wang, Zhiqing; Huang, Jiejie; Gao, Songping; Song, Shuangshuang; Fang, Yitian

doi:10.1007/s10973-014-4043-5

Cited by 30 publications

(14 citation statements)

References 29 publications

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“…Various studies have been conducted on the co-pyrolysis of BM and other fuels, including switch grass, rice straw, sawdust, crystalline cellulose and lignin with bituminous coal [60][61][62], olive stone, wheat straw, almond shells and pine sawdust with coal [63], corncob wood waste, wheat straw, rice straw, sawdust and pine with subbituminous coal [64][65][66][67][68][69], and corncob and hazelnut shells with lignite [59,70]. Plastics have also been co-pyrolyzed with BM, resulting in improvements in the properties of pyrolysis products while using plastic residues as an alternative.…”

Section: Co-pyrolysismentioning

confidence: 99%

“…However, the synergetic effects of co-pyrolysis could not be generalized. Several studies have observed a promotion or inhibition effect on the yield of products, including the yield of oils, gas, non-condensable gases and solids [64,67,68]. Some studies have found inhibitory effects on the pyrolysis rate and activation energy due to a decrease in the heat transfer, while other studies have proved the promotion effects on the oil yield, a decrease in the solids yields as well as in the reaction temperatures [32,37,62].…”

Section: Effects Of Co-pyrolysismentioning

confidence: 99%

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Current status of co-pyrolysis of oil shale and biomass

Cerón¹,

Järvik²,

Konist³

et al. 2021

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The use of biomass (BM) and oil shale (OS) blends for the production of cleaner and improved fuels and chemicals through co-pyrolysis has recently attracted attention. The potential benefits, synergetic effects, interactions and promotion and inhibition effects of co-pyrolysis of BM and OS are reviewed and analyzed in this article based on an overview of various recent studies of co-pyrolysis, including the experimental and operational parameters and the yield and composition of the products. The effects of co-pyrolysis on different feedstock blends are discussed to guide future research on BM and OS copyrolysis. The effects of different pyrolysis parameters that can improve the pyrolysis process and quality of products are also reviewed. These parameters include CO 2 and steam atmospheres, heating rate, reaction temperature and particle size. Overall, in most cases reviewed, co-pyrolysis can enhance the yields of bio-oils, producer gas and chars as well as improve their properties while reducing the environmental effects of fossil fuels.

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Section: Co-pyrolysismentioning

confidence: 99%

Section: Effects Of Co-pyrolysismentioning

confidence: 99%

Current status of co-pyrolysis of oil shale and biomass

Cerón¹,

Järvik²,

Konist³

et al. 2021

View full text Add to dashboard Cite

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“…Other reports also suggest that the mix proportions, rate of heating, and so on will influence the products and behaviors of co-pyrolysis of coal and biomass. [10][11][12][13][14] Guo et al 15 compared the co-combustion performance of biomass particles with bituminous coal and Xiaolongtan lignite using TGA. The result showed that the maximum combustion rate and combustion index increase while the burnout temperature decreases with an increase in the proportion of biomass.…”

Section: Introductionmentioning

confidence: 99%

Co-combustion performance analysis of a Fujian anthracite with Cunninghamia lanceolate and Mycorrhizal plants

Zou

Chen

Zheng

et al. 2021

Progress in Reaction Kinetics and Mechanism

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The co-combustion characteristics of Fujian anthracite with two biomasses (i.e. Cunninghamia lanceolata) and Mycorrhizal plants in different proportions were investigated using thermogravimetric analysis. The result showed that first, the co-combustion processes of Fujian anthracite with the two biomasses ( Cunninghamia lanceolata and Mycorrhizal plants) proceeded in three stages, separation and combustion of volatiles, combustion of fixed carbon in the biomass, and combustion of fixed carbon in Fujian anthracite. Secondly with increasing proportion of biomass, the co-combustion of Fujian anthracite with Cunninghamia lanceolata and Mycorrhizal plants shifted to a low-temperature zone, with a lower ignition temperature, shortened burnout time, and growth of both combustibility index ( Ci) and comprehensive combustion index S. Finally, at different mixing proportions, the comprehensive combustion index S during co-combustion of FW with Mycorrhizal plants is always larger than that during co-combustion with Cunninghamia lanceolata; therefore, FW and Mycorrhizal plants exhibit superior comprehensive co-combustion performance to FW and Cunninghamia lanceolata. Analysis of various parameters pertaining to combustion performance shows that the ignition and combustion performance of Fujian anthracite was improved as long as the Fujian anthracite was mixed with around 20% biomass.

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“…Further fractionation results in the formation of simple gases like CO, CO 2 , CH 4 , H 2 and other C x H x (Wang et al, 2014). The characterization of these volatiles is dependent on the particle size distribution, heating rate and the heating temperature.…”

Section: Introductionmentioning

confidence: 99%

Flame speed and K st reactivity data for pulverised corn cobs and peanut shells

Saeed

Andrews

Phylaktou

et al. 2017

Journal of Loss Prevention in the Process Industries

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Power generation using waste material from the processing of agricultural crops can be a viable biomass energy source. However, there is scant data on their burning properties and this work presents flame speed and explosion K st data for two agricultural waste materials: corn cobs and peanut shells. Both parameters were measured on the ISO 1 m 3 dust explosion equipment. Two coarse size fractions of corn cobs (CC) and peanut shells (PS) of size less than 500 µm were tested using the Leeds 1 m 3 vessel and were compared with two pulverized coal samples. This is typical of the size fraction used in pulverized coal power stations and of pulverized biomass currently used in power generation. The explosion parameters minimum explosive concentration (MEC), rate of pressure rise (dP/dt), deflagration constant (K st ), peak to initial pressure rise (P m /P i ), turbulent and laminar flame speeds were determined using a calibrated hemispherical disperser in the 1 m 3 vessel. MEC were measured in the range of 0.6-0.85 in terms of burnt equivalence ratio, Ø burnt , which were comparable to the coal samples. The measured K st (25-60 bar m/s) and turbulent flame speeds (~1.3 m/s) were lower than for coal, which was a reflection of the lower calorific value. These results showed that these crop residues are technically feasible power plant fuels to burn alongside coal or as a renewable biofuel on their own.

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Fast co-pyrolysis of coal and biomass in a fluidized-bed reactor

Cited by 30 publications

References 29 publications

Current status of co-pyrolysis of oil shale and biomass

Current status of co-pyrolysis of oil shale and biomass

Co-combustion performance analysis of a Fujian anthracite with Cunninghamia lanceolate and Mycorrhizal plants

Flame speed and K st reactivity data for pulverised corn cobs and peanut shells

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