International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 04 Issue: 01 | Jan -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 5.181 | ISO 9001:2008 Certified Journal | Page 1138 GASOLINE VAPOUR RECOVERY SYSTEM NISHA SHERIEF, PRAVEEN P, MEBIN DEVASIA, LINUS C LAWRENCE, ALBIN E.J, NIBIN F BENNAN JYOTHI ENGINEERING COLLEGE, CHERUTHURUTHY, THRISSUR, KERALA, INDIA ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract – Gasoline emissions in service station is one of the biggest issues that people are taking it under consideration , because the rate of the gasoline emissions are very high backs to the high temperature rates. Gasoline emissions should also be taking seriously because the high value of gasoline. These emissions contribute to the formation of smog and the control of these emissions has been applied internationally for some years. Vapor recovery is the preferred control technology after prevention and minimization. Gasoline vapour recovery system is a system to capture the vapours of gasoline so that it does not escape into atmosphere. The vapours are converted into liquid gasoline and again fed to the tank. The system is mainly applied to large storage tanks where there is huge emission of gasoline vapours. Key Words: Gasoline Vapour Recovery System, Air pump, Heater, Storage tank, dehydrating agent 1.INTRODUCTION Gasoline is a transparent, petroleum-derived liquid that is used primarily as a fuel in internal combustion engines. It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives. A 42-gallon barrel of crude oil yields about 19 gallons of gasoline, when processed in an oil refinery. Gasoline is a commodity used worldwide. During its use, carbon dioxide, nitrous oxides and hydrocarbons are emitted as a result of combustion processes taking place in a vehicle. Further emissions, consisting of hydrocarbons, take place during the storage and distribution of gasoline due to evaporation. The hydrocarbons emitted during gasoline storage and distribution can be broadly classified as volatile organic compounds (VOCs). VOCs make up a major class of air pollutants and are a brad collective term for different organic compounds. These include pure hydrocarbons, partially oxidized hydrocarbons and organics containing chlorine, sulfur and nitrogen; with most VOCs being toxic and/or carcinogenic Gasoline, as used worldwide in the vast number of internal combustion engines used in transport and industry, has a significant impact on the environment, both in local effects (e.g., smog) and in global effects (e.g., effect on the climate). Gasoline may also enter the environment as uncombusted, as liquid and as vapors, from leakage and handling during production, transport and delivery, from storage tanks, from spills, etc. Volatile organic compounds (VOCs) are among the most common air pollutants emitted by chemical process industries, and include hydrocarbons such as olefins, paraffin and aromatics. VOCs adversely affect air quality as it is one of the precursors of ground level ozone (GLO), the primary component of smog. It can also have a negative impact on human health due to its toxicity. During gasoline storage and distribution, VOCs are emitted due to evaporation, where the rate of evaporation depends on factors such as the vapor pressure of the liquid, temperature and turbulence. Besides being an environmental hazard, these fugitive VOCs emissions actually cost lot money. So by minimizing the escaped vapors from bulk storage at marketing depot and the storage tank at service station we maximize the profits of the owners of the marketing depot and the service station. Once released into the atmosphere VOC can react in the presence of sunlight with nitrogen oxides emitted from combustion processes to form ground level ozone and other components of photochemical smog. The potential impacts of ground-level ozone include reduced lung function, increased incidence of respiratory symptoms, respiratory hospital admissions and mortality. Ground-level ozone can also cause damage to many plant species leading to loss of yield and quality of crops, damage to forests and impacts on biodiversity. Benzene is a VOC and a component of petrol. It is also a known human carcinogen and is associated with a heightened risk of illnesses such as leukemia. 2.DESIGN OF THE SYSTEM Figure 1. Gasoline Vapour Recovery System