Water-induced thermal Decomposition of Fireworks Gunpowder Chemical Composition
R. Manikandan1, S. Rajesh2, K. Subash3
1R. Manikandan, Department of Mechanical Engineering, Kalasalingam Academy of Research and Education College, Krishnankoil (Tamil Nadu), India.
2S. Rajesh, Department of Mechanical Engineering, Kalasalingam Academy of Research and Education College, Krishnankoil (Tamil Nadu), India.
3K. Subash, M.Tech ISE, Department of Mechanical Engineering, Kalasalingam Academy of Research and Education College, Krishnankoil (Tamil Nadu), India.
Manuscript received on 28 November 2019 | Revised Manuscript received on 17 December 2019 | Manuscript Published on 31 December 2019 | PP: 250-254 | Volume-8 Issue-4S2 December 2019 | Retrieval Number: D10511292S219/2019©BEIESP | DOI: 10.35940/ijrte.D1051.1284S219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In the firework industry, thermal decomposition is the main source of minor and fatal accidents. The existence of moisture and hygroscopic property of the fireworks chemical powders leads to thermal decomposition. In this study, firework chemicals combinations are modified by adding charcoal as one of the chemical powder. Here the gun powder is made using different chemical powders like potassium nitrate, sulfur, charcoal and it could be stored in shadow shed (stage-I) and followed by drying platform (stage-II). During this storage time, thermal analysis is carried out using Differential Scanning Calorimetric (DSC). DSC result of gun powder (after preparation) shows that thermal decomposition starts at 262.67°C and enthalpy is -521.57J/g. The gun powder from shadow shed it is 263.93°C and enthalpy is -378.21J/g. The onset temperature of the gun powder collected from the drying platform is 265.25°C and enthalpy is -284.01J/g. The sample after preparation contains more amount of moisture content absorbs more heat and initiates the thermal decomposition as earlier than the sample collected from shadow shed and drying platform. The heat dissipation rate is also reduced for stage I than stage II. So, the thermal hazards associated manufacturing process is very high when it contains more amount of moisture content.
Keywords: Gun Powder, Thermal Analysis, Moisture Content, DSC Test.
Scope of the Article: Thermal Engineering