A review of low-rank coals liquefaction processes containing water and syngas (or CO)

Li, Huan; Peng, Wencai; Zhu, Di; Gu, Jiale; Wu, Youqing; Huang, Sheng; Gao, Jin‐Sheng; Zhao, Baofeng; Guan, Haibin; Li, Chao; Xu, Jing; Bai, Jinfeng; Lv, Yanli; Jy, Yang; Chen, Dabo; Wu, Shiyong

doi:10.1016/j.fuel.2022.126260

Cited by 15 publications

(2 citation statements)

References 94 publications

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“…The sulfur contained in coals is a harmful component both its impact on the environment and technological point of view [5]. As high-quality coals are produced, coal of poorer quality is increasingly being used, which will negatively affect the environmental situation [6]. Low-quality coals are characterized by a predominance of sulfide sulfur: mainly pyrite (FeS 2 ), as well as chalcopyrite (CuFeS 2 ) and marcasite (iron polysulfide, FeS 2 ) [7].…”

Section: Introductionmentioning

confidence: 99%

Thermal decomposition of sulfur brown coal

Tsvetkova,

Kislov,

Zaichenko

et al. 2024

E3S Web Conf.

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Section: Introductionmentioning

confidence: 99%

Thermal decomposition of sulfur brown coal

Tsvetkova,

Kislov,

Zaichenko

et al. 2024

E3S Web Conf.

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“…Coal consumption in China accounts for more than 50% of primary energy, which is expected to be maintained for a long time. , Consequently, China’s recourse to mitigating the import pressure of oil and gas resources involved a reliance upon substantial coal resource production, particularly through coal tar production by pyrolysis. Coal tar production through pyrolysis refers to a mixed product containing a diverse array of intricate organic constituents obtained by heating coal to elevated temperature in an inert atmosphere and cooling the output pyrolysis gas. − A diverse array of valuable products, including coal tar, crude benzene, and semi-coke, could commonly be derived . Simultaneously, the hierarchical and qualitative utilization of tar holds the potential to facilitate the more efficient utilization of this resource.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Vacuum Distillation Separation Characteristics of Tar Containing Solid Particles: Distributions of Light Components

Yang,

Hou,

Wang

et al. 2024

ACS Omega

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The impacts of the composition and properties of tar products on their utilization are of great importance, while the consequences of varying tar separation conditions on distillation fractions remain underexplored. Solid impurities in special tar products (e.g., subsurface in situ pyrolysis-derived tar-like substances) can contribute to the separation as well. In the present study, low-temperature coal tar (LTCT) was used as an analogue to pyrolysis product, mixed with semi-coke and coal dust, representing pyrolytic byproducts and nonpyrolytic substances, respectively. The LTCT mixtures were tested with vacuum distillation at various pressures and temperatures. The results revealed the role of pressure in fraction distribution across temperatures, with higher pressure concentrating fractions at lower temperatures. The impact of solid impurities on distillation primarily stemmed from adsorption. Minimal concentrations of solid impurities carried coal dust/semi-coke into the distillation, but higher levels retained them in the residue. The adsorption of coal dust was quite high at lower temperatures and waned as temperature increased, unlike semi-coke, which had consistent adsorption throughout the distillation. The present study can advance the understanding of vacuum distillation for tar products in the presence of solid impurities, offering a framework for the effective distillation/utilization of coal tar. By probing separation conditions, tar properties, and solid impurity effects, the present research will refine strategies for optimizing coal tar use, crucial for enhancing energy security and sustainable progress in China.

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Study on hydrogenation of oxygenated aromatic hydrocarbons via water-gas shift reaction in a subcritical CO-H2O system

Peng

et al. 2023

Fuel

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A review of low-rank coals liquefaction processes containing water and syngas (or CO)

Cited by 15 publications

References 94 publications

Thermal decomposition of sulfur brown coal

Thermal decomposition of sulfur brown coal

Experimental Study on Vacuum Distillation Separation Characteristics of Tar Containing Solid Particles: Distributions of Light Components

Study on hydrogenation of oxygenated aromatic hydrocarbons via water-gas shift reaction in a subcritical CO-H2O system

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