Identification, Assessment and Estimation of Ozone Layer Destruction Hazardous Substances and Substitution Strategies in Petrochemical Industries
Publish place: 3rd National Congress on Civil Engineering
Publish Year: 1386
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
NCCE03_442
تاریخ نمایه سازی: 27 شهریور 1385
Abstract:
Ozone layer destruction gases like halogenated hydrocarbons are used in some processes like solvent extraction, fire fighting, and as refrigerants in petrochemical industries. In this study, national acts and protocols in addition of international regulations, about ozone layer destruction gases were reviewed. According to protocols' constraints, the strategy of substitution of these gases by ozone friendly gases (with considering their potential of ozone layer destruction) was followed. For this purpose, application of destructive gases in a Petrochemical Complex as case study was assessed and estimated using mass balance method. According to results of this research, it is suggested that instead of Halon 1211, CO2 gas is used as extinguisher and R-22 is good substitute for R-12. Candidate substitutions were selected depend on those potential of ozone layer destruction and they were proposed to company to perform. Finally, substitution of gases was assessed and recommended to all of petrochemical industries in Iran.
Keywords:
Ozone Depletion Substances (ODSs) , Ozone Depletion Potential (ODPs) , CFCs , Halogenated hydrocarbons (halons) , refrigerants , R-12 , R-22
Authors
E. Fatehifar
Environmental Engineering Research Center, Sahand University of Technology, Tabriz, IRAN
M. A. Kaynejad
Environmental Engineering Research Center, Sahand University of Technology, Tabriz, IRAN
A. Alizadeh Osalu
Environmental Division, HSE Dept., Tabriz Petrochemical Complex, National Petrochemical Company, IRAN