EFFECTS OF COPPER OXIDE AND SULFURIC ACID ON THE PYROLYSIS BEHAVIOR OF AMMONIUM NITRATE UNDER THERMAL RADIATION EXPERIMENTS
Journal Title: International scientific journal Science and Innovation - Year 2023, Vol 2, Issue 5
Abstract
Statistics have indicated that industrial accidents of ammonium nitrate were primarily caused by uncontrolled external fires where heating was dominantly controlled by radiation, and yet existing studies at milligram scale cannot fully simulate the real fire scenarios. To explore the pyrolysis behavior in typical fires, this study conducted thermal radiation experiments using pure ammonium nitrate, and its mixtures with copper oxide and sulfuric acid. Different from the pyrolysis process identified in milligram scale tests, the bench-scale pyrolysis of ammonium nitrate under radiation consisted of four stages. Pyrolysis structure model of each stage was built to reveal the differences in dominated thermal behavior. Results indicated that two additives had different thermochemical effects on pyrolysis of ammonium nitrate. Sulfuric acid accelerated the reaction rate of each stage by generating catalytic nitric acid; copper oxide reduced the number of reaction stages into three via surface absorptions. The time and mass loss rate of different stages were determined. Recommendations on effective emergency response were made to prevent the transition of slow decomposition into fast decomposition, and thus to intervene the fire-induced domino effect of ammonium nitrate. This study helps to understand the pyrolysis behavior of ammonium nitrate under fire exposure, and provides insights for pyrolysis modeling and firefighting in industry of interest.
Authors and Affiliations
Asadjon Qambarov, Tursunoy Navruzova, Mukhlisa Davlatmirzaeva, Iskandar To‘raboyev, Zarifjon Salimov
Keywords
Related Articles
- EP ID EP717306
- DOI 10.5281/zenodo.7979264
- Views 74
- Downloads 0
INVESTIGATION OF GASTROINTESTINAL HELMINTH INFECTIONS IN SHEEP IN THE KOSHRABOT AND ISHTIKHAN DISTRICTS OF SAMARKAND REGION
The article presents the results of a study of some gastrointestinal helminthiasis in sheep under the care of the population in the Koshrabot and Ishtikhan districts of the Samarkand region. In particular, the article pr...
CONCEPT OF SOCIAL DANGER OF FRAUD AND DESCRIPTION
In this article, the author gives a general description of the concept of fraud and some of its specific aspects. In addition, the components of the structure of the fraud crime are analyzed, and the social danger of th...
INTERACTIVE METHODS OF APPLYING MODERN TECHNOLOGIES TO THE TEACHING PROCESS
The article focuses on modern technologies in teaching and highlights how they can be used effectively and its creative methods to apply
THE ROLE OF MICROORGANISMS IN THE ECOLOGICAL CONDITION OF SOIL
The article examines the influence of heavy metals, such as Cr, Ni, Cd, Pb, and Cu on humus content and mobile forms of nutrients (NPK) in various types of irrigated soils, with contamination levels 3, 5, and 10 times hi...
INTEGRATED TEACHING OF LISTENING AND READING: IMPORTANCE AND ISSUES
This article explores the importance of integrated teaching of listening and reading in language instruction. The interdependence and reciprocal relationship between these two language skills are recognized, highlighting...