Two stages holding pyrolysis of lignite under coke-oven gas

Gu, Ning; Hu, Shuangqi; Cao, Yang; Jin, Riya

doi:10.1016/j.jaap.2010.06.004

Cited by 9 publications

(2 citation statements)

References 21 publications

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“…Coal pyrolysis using hydrogen-rich mixed gases such as coke oven gas has been studied [14][15][16][17]. Liao et al [14] investigated the pyrolysis of lignite under coke oven gas and found that pyrolysis under this gas leads to a higher oil yield and larger benzenetoluene-xylene (BTX) fractions, phenol-cresols-xylenols (PCX) fractions, and naphthalene yields than hydropyrolysis at the same partial pressure of H 2 gas.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Pyrolysis of Bituminous Coal under Pyrolysis Gas over a Ni/MgO Catalyst

Zhu

Zhang

et al. 2017

Chem Eng & Technol

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To improve the yield and quality of coal pyrolysis tar while using pyrolysis gas (PG), a Ni/MgO catalyst was introduced to catalyze the pyrolysis of bituminous coal under a PG atmosphere. The effects of pyrolysis temperature, gas flow rate, catalyst packing methods, and atmosphere composition on coal pyrolysis were investigated. The yield and quality of tar obtained from Shihezi (SHZ) bituminous coal pyrolysis under N 2 , PG, and PG over a Ni/MgO catalyst were found to vary with the increase of pyrolysis temperature. The catalyst packed in the upper layer results in higher tar yields, but mixing the catalyst and coal leads to an increase in the maltene yield. The components in PG improved the tar yield and tar quality. Finally, a higher tar yield can be obtained from SHZ coal pyrolysis under CO/H 2 , CO 2 /H 2 , and CO 2 /CH 4 atmospheres using a Ni/MgO catalyst.

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Section: Introductionmentioning

confidence: 99%

Catalytic Pyrolysis of Bituminous Coal under Pyrolysis Gas over a Ni/MgO Catalyst

Zhu

Zhang

et al. 2017

Chem Eng & Technol

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“…It is no doubt that coal pyrolysis and combustion will still be an important way of coal utilization in a relatively long term in the future. However, the direct combustion of coal often suffers low combustion efficiency and serious pollutions . Compared with direct combustion of raw coal, the char from low‐temperature pyrolysis can combust more efficiently with less pollution .…”

Section: Introductionmentioning

confidence: 99%

Comparative study on structural properties and combustion kinetics of Chinese Shenhua long flame raw coal and its pyrolytic char

Wang

Song

Zhou

et al. 2017

Env Prog and Sustain Energy

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Research on the structural and combustion properties of coal is of great importance for its conversion and applications in view of fundamental studies. In this work, we conducted the first detailed study on the structural properties and combustion kinetics of Chinese Shenhua raw coal (RC) and its pyrolytic char (PC). The combustion kinetics was simulated by using the random pore model (RPM). The results showed that RC and PC were composed of both a plant‐cell‐like structure and a discrete particulate structure. In addition, PC had a larger specific surface area, finer particles, higher aromaticity, and higher degree of aromatic ring condensation than those of RC. Combustion of PC showed higher ignition temperature, lower burnout temperature, and a higher combustion index compared to RC. A high correlation coefficient R2 (0.999) and a low average error θ (0.008) were obtained using the RPM. The combustion apparent activation energy E and the structural parameter ψ of RC were 40.30 kJ mol−1 and 0.53, respectively. For PC, the values of E and ψ were estimated to be 60.01 kJ mol−1 and 0, respectively. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 766–774, 2017

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Study on the relationship between pyrolysis volatile products and structure of Shengli lignite using TG-FTIR-GC/MS

Liu

Wang

Zhang

et al. 2021

J Therm Anal Calorim

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Two stages holding pyrolysis of lignite under coke-oven gas

Cited by 9 publications

References 21 publications

Catalytic Pyrolysis of Bituminous Coal under Pyrolysis Gas over a Ni/MgO Catalyst

Catalytic Pyrolysis of Bituminous Coal under Pyrolysis Gas over a Ni/MgO Catalyst

Comparative study on structural properties and combustion kinetics of Chinese Shenhua long flame raw coal and its pyrolytic char

Study on the relationship between pyrolysis volatile products and structure of Shengli lignite using TG-FTIR-GC/MS

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