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 45
- Downloads 0
RESEARCHING THE METHODS OF ASSESSING THE FINANCIAL POSITION OF AN ENTERPRISE
The information base is considered for the analysis of the financial condition. Assessing the financial position of an enterprise is a key task for management, investors and creditors, allowing to understand the sustaina...
FEATURES OF FORMATION OF ACMEOLOGICAL COMPETENCE OF FUTURE TEACHERS-PSYCHOLOGISTS
Psychological and pedagogical activity is an activity to create conditions for personal self-development, freedom of choice and creativity. The determining condition for the implementation of these goals is the awakening...
SENTIMENTAL ANALYSIS IN COMPUTER LINGUISTICS
The article describes the scientific views on the systematic approach to sentiment analysis and perceptual analysis of the text. The most common way to evaluate character weights in natural language processing (NLP) info...
ASSESSMENT OF AIR EMISSIONS IN THE PROCESS OIL AND GAS PROCESSINGS
In this work, the Bilo studied a large number of emissions into the atmosphere of acidic components of the Oil and Gas Processing Plants and their impact on the ecology of these regions.
EFFECTIVENESS OF USING PEDAGOGICAL TECHNOLOGIES IN FORMING THE COMPETENCES OF STUDENTS' INTEREST IN NATIONAL CRAFT
This article talks about the importance and effectiveness of using pedagogical technologies in the formation of students' competences of interest in national handicrafts.