Study on the Structure of a Novel CMS@C12H22O14Fe Suppressant and Its Mechanism of Inhibiting Coal Dust Deflagration
Abstract
:1. Introduction
2. Experiment
2.1. Preparation of Suppressors
2.1.1. Experimental Raw Materials
2.1.2. Preparation of Suppressor
2.2. Characterization and Analysis of Experimental Materials
2.2.1. Particle Size Distribution
2.2.2. Morphological Analysis
2.2.3. X-Ray Diffraction Analysis
2.2.4. Infrared Spectrum Analysis
2.2.5. Thermogravimetric Analysis
2.3. Experimental Equipment
3. Results and Analysis
3.1. Analysis of Flame Propagation Inhibition of Lignite Coal Dust by CMS@C12H22O14Fe
3.2. Infrared Analysis of Lignite Pulverized Coal Flame Suppression by CMS@C12H22O14Fe
3.3. Mechanism of Coal Dust Detonation Suppression by CMS@C12H22O14Fe
- (1)
- Physical inhibition
- (2)
- Chemical inhibition
4. Conclusions
- (1)
- The optimal loading of the active component was ascertained by regulating the loading of CMS@C12H22O14Fe when the addition was 10 wt.%. After a comprehensive analysis of the flame morphology, color, and propagation speed, it was discovered that with the increase in loading capacity, the flame propagation inhibited by the explosion suppressant showed a trend of first increasing and then decreasing.
- (2)
- When the loading of C12H22O14Fe was 50 wt.% in the suppressant, the flame suppression effect was the best.
- (3)
- The addition amount of CMS@C12H22O14Fe was further altered, and through re-analyzing the morphology, color, and propagation speed of the flame, it was ascertained that with the increase in the addition amount, the effect of explosion suppression was gradually enhanced. The flame could be suppressed when the addition amount of CMS@C12H22O14Fe-50 was 30 wt.%.
- (4)
- The FT-IR results of coal dust combustion before and after adding the 30 wt.% CMS@C12H22O14Fe-50 were compared. This comparative analysis further corroborates that the suppressant exhibits an excellent inhibitory effect on coal dust. In combination with the characterization analysis, this shows that the CMS@C12H22O14Fe suppressant undergoes the processes of dehydration, heat absorption, and chemical decomposition, which reveals the physical and chemical inhibitory mechanism of the CMS@C12H22O14Fe suppressant on coal dust.
- (5)
- The preparation of CMS@C12H22O14Fe composite powders by anti-solvent crystallization is an efficient and environmentally friendly technological route, but its process stability is limited by key parameters: the solubility of the active component (C12H22O14Fe) in deionized water, and the dispersion characteristics of the carrier material (CMS) in anhydrous ethanol. These parameters have a direct impact on the loading uniformity and coating efficiency of the active component. Especially in large-scale production scenarios, the control of particle size distribution and consistency of inhibitor loading may face engineering challenges. In the future, automated process control systems need to be developed to achieve industrial-grade batch stability by monitoring solvent ratios in real-time.
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
Abbreviations
MDPI | Multidisciplinary Digital Publishing Institute |
DOAJ | Directory of Open-Access Journals |
TLA | Three-letter acronym |
LD | Linear dichroism |
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Industrial Analysis (%) | |||
---|---|---|---|
Mad | Aad | Vad | FCad |
1.89 | 9.07 | 36.56 | 52.48 |
Deionized Water (g/100 mL) | Anhydrous Ethanol (g/100 mL) | |
---|---|---|
C12H22O14Fe | 11.8 | indissolvable |
CMS | insoluble | insoluble |
D [2,3] | D [3,4] | D10 (µm) | D50 (µm) | D90 (µm) | |
---|---|---|---|---|---|
CMS | 4.767 | 28.347 | 1.625 | 19.751 | 68.688 |
CMS@C12H22O14Fe | 6.256 | 34.531 | 2.370 | 28.258 | 76.947 |
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Zhang, Y.; Yang, Y.; Han, J.; Dongye, S.; Wang, F.; Liu, W.; Wang, L.; Zhang, Y. Study on the Structure of a Novel CMS@C12H22O14Fe Suppressant and Its Mechanism of Inhibiting Coal Dust Deflagration. Processes 2025, 13, 650. https://doi.org/10.3390/pr13030650
Zhang Y, Yang Y, Han J, Dongye S, Wang F, Liu W, Wang L, Zhang Y. Study on the Structure of a Novel CMS@C12H22O14Fe Suppressant and Its Mechanism of Inhibiting Coal Dust Deflagration. Processes. 2025; 13(3):650. https://doi.org/10.3390/pr13030650
Chicago/Turabian StyleZhang, Yansong, Yang Yang, Jin Han, Shengjing Dongye, Fei Wang, Wenjie Liu, Lei Wang, and Yang Zhang. 2025. "Study on the Structure of a Novel CMS@C12H22O14Fe Suppressant and Its Mechanism of Inhibiting Coal Dust Deflagration" Processes 13, no. 3: 650. https://doi.org/10.3390/pr13030650
APA StyleZhang, Y., Yang, Y., Han, J., Dongye, S., Wang, F., Liu, W., Wang, L., & Zhang, Y. (2025). Study on the Structure of a Novel CMS@C12H22O14Fe Suppressant and Its Mechanism of Inhibiting Coal Dust Deflagration. Processes, 13(3), 650. https://doi.org/10.3390/pr13030650