Dissertation > Excellent graduate degree dissertation topics show

Effects of Typical Suppressant on the Explosion Performance and Mechanism of Ammonium Nitrate

Author: TanLiu
Tutor: LiuDaBin
School: Nanjing University of Technology and Engineering
Course: Chemical Engineering
Keywords: ammonium nitrate ammonium nitrate fuel oil suppressant thermal stability
CLC: TQ564
Type: Master's thesis
Year: 2014
Downloads: 9
Quote: 0
Read: Download Dissertation

Abstract


This study aimed to study the performance of ammonium nitrate(AN)-additives mixtures, with an emphasis on the analysis of heat sensitivity performance and the explosive performance. The KCl, NaCl, and NH4H2PO4were added to the AN by mechanical mixing methods and the solution mixing methods. Relative thermal stability were determined by differential scanning calorimetry (DSC), the spread of detonation ability of the modified AN and ANFO was tested by the United Nations gap test, the Koenen test was used to measure the sensitiveness of AN and ANFO substances to intense heat with varied confinement.The result show that:when AN contained25%KCl,20%NaCl and30%NH4H2PO4, AN initial reaction temperature increased to220.14℃,261.57℃,215.96℃respectively, KCl, NaCl, and NH4H2PO4as additive can improve the AN initial reaction temperature. The three additives also can reduce the thermal sensitivity of the AN, the modified AN that prepared by the solution mixing method the critical value of KCl and NaCl are30%-35%,35%-40%, the critical value of NH4H2PO4less than10%, for the mechanical mixture method the critical value of KC1and NaCl are30%-35%,35%-40%, the critical value of NH4H2PO4less than10%.The results of DSC and the Koenen test results show that the mixed method is not significantly affected the results. The results of the UN gap test are shown that:the modified AN that prepared by a solution mixing method the critical value are10%-15%、10%-15%、25%-30%, for the mechanical mixture method the critical value are15%-20%、30%-35%、20%-25%, Within the scope of the critical value, the detonation of the modified ammonium nitrate can’t stable spread. That suggests that there have a great impact on the detonation of AN for the different additives and different method of mixing.

Related Dissertations

  1. Thermal Stability of Complexes of Chitosan Quaternary Ammonium Salt and Metal Ion,O634
  2. Synthesis and Application of the chloro- methoxy fatty acid methyl esters,TQ414.8
  3. Syntheses, Structures and Properties of Metal-organic Frameworks Based on Dicarboxylate Ligands,O621.13
  4. The Screening of the Rice Germplasm Resources on Al Tolerance and the Impact of Different Forms of N Element on Al Tolerance in Rice (Oryza sativa L.),S511
  5. Imidazolium ionic liquids Thermal Analysis,O626.23
  6. Syntheses, Structures, and Property Studies of Coordination Polymers Assembled from 2, 4-Dibenzoylisophthalic Acid,O634
  7. Synthesis, Characterization and Properties of One-dimensional Silicon Carbide Nanomaterials,TB383.1
  8. Irrigation and nitrogen levels on nitrogen utilization and soil nitrogen supply capacity and its impact on the risk of loss,S511
  9. Experimental Study on the Treatment of High Concentration Ammonium Nitrate Wastewater,X703
  10. Effects of Top and Nitrogen Nutrition Regulations in Rizosphere to Flue-cured Tobacco Yield and Main Chemical Qualities,S572
  11. Study on Simultaneous Removal of SO2 and NO of Phenolic Carbon Foam Modified by Metal Compound/ Ammonium Nitrate,X701.3
  12. Study on Variation of Carbon and Nitrogen Components of Soil in Napahai Wetland Reserve,S153
  13. Study on Modification of Ammonium Polyphosphate and Its Application in High-density Polyethylene,TQ325.12
  14. Study on the Sythesis and Properties of Fluorene-containing Benzoxazines,TQ323.1
  15. Heat-resistance Modification of Methyl Vinyl Silicone Rubber and Application,TQ333.93
  16. Study on the Molecular Structure and Processing Roperties of Chlorinated Poly(Vinyl Chloride),TQ325.3
  17. Preparation and Characterization of Novel Polymer-Based Form-Stable Phase Change Materials,TB332
  18. Fe-based bulk metallic glass Development and Characterization,TG139.8
  19. Preparation, Characterization and Properties of Cu-Zr-Al and Cu-Zr-Al-Y/Ag Amorphous Alloys,TG139.8
  20. Preparation and Properties of Quaternary Fe-B-Nb-Y(Er) Bulk Metallic Glasses,TG139.8
  21. Experimental Investigation of AZ80A Alloy Processed by Multi-Directional Forging and Equal Channel Angular Extrusion,TG115.53

CLC: > Industrial Technology > Chemical Industry > Explosives industry, match industry > Rampant explosives
© 2012 www.DissertationTopic.Net  Mobile