Effect of density on physicochemical and thermal conversion characteristic of Naomaohu coal

Chen, Tianju; Dai, Ruowei; Yellezuome, Dominic; Zhang, Ke; Zhao, Ruyan; Liu, Guangrui; Wu, Jinhu

doi:10.1016/j.fuel.2020.119045

Cited by 8 publications

(1 citation statement)

References 29 publications

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“…The amount of CO and CO 2 gases produced in the oxidation process reflects the oxidation of coal samples and the difficulties associated with coal spontaneous combustion. 39 By analyzing the influence of inhibitors on gas production in the coal oxidation process, the inhibitor performance can be studied. 40 Figure 14 shows the three-dimensional infrared spectra of the gas products of different samples.…”

Section: Resultsmentioning

confidence: 99%

Characterization and Performance Testing of an Intumescent Nanoinhibitor for Inhibiting Coal Spontaneous Combustion

et al. 2022

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Considering disadvantages such as the low thermal stability and environmental pollution of existing gel inhibitors, a green and stable intumescent nanoinhibitor (INI) was prepared and tested. First, polyacrylamide (PAM), nano-silica, and intumescent flame retardant (IFR) were selected as raw materials. The INI was prepared by nanoparticle modification and cross-linking polymerization. Then, the structure and physical properties of INI were tested by Fourier transform infrared spectroscopy, scanning electron microscopy, and rheological experiments. Meanwhile, the inhibition performance of INI was studied through thermogravimetric analysis-Fourier transfer infrared spectroscopy (TGA-FTIR) analysis. The results suggest that the nanomodification improved the dispersibility of INI particles. The addition of modified nano-silica (MNS) and IFR enhances the strength of the reticular structure, thereby improving the transport convenience and covering ability of the INI gel. At high temperatures, IFR can generate a porous foamed carbon layer that further coats the coal. After INI inhibition treatment, the characteristic temperature and activation energy of coal were significantly improved, and the production of carbon monoxide and carbon dioxide decreased. Hence, irrespective of physical properties, physical inhibition performance, or chemical inhibition performance, INI performed well. Research results can provide valuable references for the preparation and performance study of a coal spontaneous combustion inhibitor.

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Section: Resultsmentioning

confidence: 99%