Journal ArticleDOI
Hydrothermal dewatering of a Chinese lignite and properties of the solid products
TLDR
In this article, a lignite from Shengli mine in Chinese Inner Mongolia was upgraded by hydrothermal dewatering (HTD), and the effects of the HTD process on the solid product yield and the removal rate of elements, organics and inorganics in this coal were determined.About:
This article is published in Fuel.The article was published on 2016-09-15. It has received 89 citations till now. The article focuses on the topics: Coal & Equilibrium moisture content.read more
Citations
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Journal ArticleDOI
Moisture removal mechanism of low-rank coal by hydrothermal dewatering: Physicochemical property analysis and DFT calculation
TL;DR: In this article, the effects of pore structure and oxygen functional group content on moisture distribution were investigated, and the types of non-covalent interactions of both hydrophobic and hydrophilic sites in lignite with water were vividly demonstrated using color-mapped reduced density gradient isosurface.
Journal ArticleDOI
Construction of the molecular structure model of the Shengli lignite using TG-GC/MS and FTIR spectrometry data
TL;DR: In this article, the molecular structure model of Shengli lignite was determined via TG-GC/MS for the analysis of the pyrolysis products' structure and contents, in combination with ultimate analysis and FTIR for the determination of its structure parameters.
Journal ArticleDOI
Effects of hydrothermal upgrading on the physicochemical structure and gasification characteristics of Zhundong coal
TL;DR: In this paper, the physicochemical structure and gasification characteristics of Zhundong coal were investigated, and the results showed that the properties of the upgraded coal were effectively improved and the coal rank increased after HT upgrading.
Journal ArticleDOI
Co-Hydrothermal Carbonization of coal-biomass blend: Influence of temperature on solid fuel properties
TL;DR: In this article, the synergistic effects of miscanthus on coal during Co-HTC was evaluated by evaluating mass yields, energy content, ultimate analysis, and proximate analysis.
Journal ArticleDOI
Study on the pyrolysis kinetics of low-medium rank coals with distributed activation energy model
Jingchong Yan,Muxin Liu,Zhihao Feng,Zongqing Bai,Hengfu Shui,Zhan-Ku Li,Zhiping Lei,Zhicai Wang,Shibiao Ren,Shigang Kang,Hong-Lei Yan +10 more
TL;DR: In this paper, a coal pyrolysis model based on distributed activation energy model (DAEM) was proposed to analyze coal pyrotechnic properties and kinetics of four low-medium rank coals.
References
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Journal ArticleDOI
Humidity fixed points of binary saturated aqueous solutions
TL;DR: In this paper, an evaluated compilation of equilibrium relative humidity in air versus temperature from pure phase to approximately 105 pascal (1 atm) in pressure is presented for 28 binary saturated aqueous solutions.
Journal ArticleDOI
A review on water in low rank coals: The existence, interaction with coal structure and effects on coal utilization
TL;DR: In this paper, a comprehensive overview on the fundamental understanding of water in brown coal and lignite, including the physical and chemical structure of coal, the forms of water present in low-rank coals, migration of water during drying, coal structure changes during moisture loss, moisture re-adsorption, and effects of water removal on subsequent applications including combustion, gasification and liquefaction are also summarized.
Journal ArticleDOI
Pyrolysis behavior and bonding information of coal — A TGA study
TL;DR: In this paper, the authors used a TGA coupled with a mass spectrometer to study pyrolysis of 34 Chinese coals and found that the mass loss registered in TGA during temperature programmed heating is attributed mainly to devolatilization of fragments generated from cleavage of covalent bonds.
Journal ArticleDOI
Analysis of carboxyl group in coal and coal aromaticity by Fourier transform infrared (FT-IR) spectrometry
TL;DR: In this paper, the content of COOH group in coal was calculated from the FT-IR analysis with the aid of the molar absorption coefficient, which had been derived using various aromatic carboxylic acids.
Journal ArticleDOI
A study of spontaneous combustion characteristics of a turkish lignite: particle size, moisture of coal, humidity of air
TL;DR: In this paper, the authors evaluated the spontaneous combustion characteristics of Askale lignite from Turkey using Crossing Point Methods adapted to our laboratories conditions, and determined the three predominant oxygen functional groups (carboxyl, hydroxyl and carbonyl) in untreated and moist coal samples with wet chemical methods.
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Hydrothermal dewatering of lower rank coals. 1. Effects of process conditions on the properties of dried product
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