2004, Volume 6, Issue 11
Strategic Study of CAE >> 2004, Volume 6, Issue 11
Thermal Stability Evaluation of Non-explosive and Irrestorable Fertilizer-grade Ammonium Nitrate
1. Beijing General Research Institute of Mining and Metallurgy, Beijing 100044, China
2. University of Science and Technology Beijing, Beijing 100083, China
Next Previous
Abstract
A new method using accelerating rate calorimeter (ARC) was introduced in this paper to evaluate the thermal stability of energetic materials. By the method, the adiabatic decompositions of ammonium nitrate (AN) and non-explosive and irrestorable fertilizer-grade ammonium nitrate (NEIFAN) were investigated. The curves of thermal decomposition temperature and pressure versus time, self-heating rate and pressure versus temperature were obtained. The kinetic parameters such as apparent activation energy and pre-exponential factor were calculated. The effects of thermal inertia factor on the results of measurement of the adiabatic ARC are discussed. It was indicated that NEIFAN has better thermal stability and safety. At the same time, it can be shown that the elimination of NEIFAN explosive characteristic is due to the improvement on its thermal stability.
Keywords
fertilizer-grade ammonium nitrate ; non-explosivity ; irrestorability ; accelerating rate calorimeter ; thermal stability
Figures
图1
图2
图3
图4
图5
References
[ 1 ] OxleyJimmieC , JamesL , Smith, etal.Ammoniumnitrate:thermalstabilityandexplosivitymodifiers[J].ThermochimicaActa, 2002, 384:23～45
[ 2 ] TurcotteR , LightfootPD , etal.ThermalhazardassessmentofANandAN basedexplosives[J].JournalofHazardousMaterials, 2003, A101:1～27
[ 3 ] 钱新明, 傅智敏, 张文明, 等.NH4NO3和NH4ClO4的绝热分解研究[J].含能材料, 2001, 9 (4) :156～160 link1
[ 4 ] 唐双凌, 刘祖亮, 朱广军, 等.添加剂对硝酸铵爆轰安全性和热稳定性的影响[J].化肥工业, 2003, 30 (4) :28～32 link1
[ 5 ] 王国利, 李建军, 汪旭光.采用加速度量热法评价工业炸药热安全性的研究[J].爆破器材, 1997, 26 (6) :1～5 link1
[ 6 ] TownsendDI , TouJC .Thermalhazardevaluationbyanacceleratingratecalorimeter[J ].ThermochimicaActa, 1980, 37:1～30
[ 7 ] MoresS , NolanPF .Developmentofinstrumentationandmodelinginacceleratingratecalorimetry[M ].ChemicalEngineeringResearchCentre, London:SouthBankUniversity, SE1OAA , 1996
[ 8 ] PickardJM .UtilizationofacceleratingratecalorimetryforthecharacterisationofenergeticmaterialsatMRC Mound[J].JournalofHazardousMaterials, 1983, 7 (3) :281～292
[ 9 ] Nationalfiveprotectionassociation, NFPA49HazardousChemicalData[S ].Quincy, Massachusetts, 1994
[10] FisherHG , GoetzDD , Determinationofself acceleratingdecompositiontemperaturesusingtheacceleratingratecalorimeter[J].JournalofLossPreventionintheProcessIndustries, 1991, 4:305～316
[11] WilberforceJK .TheuseoftheacceleratingratecalorimetertodeterminetheSADToforganicperoxides[J].JournalofThermalAnalysis, 1982, 25:593～596
京公网安备 11010502051620号
