الفهرس 
INTRODUCTIONيوجد فقط 14 صفحة متاحة للعرض العام
 |  | from | 99 |  |  |
| | | from | 99 | | |
المستخلص
Conventional energy sources are limited in the world and energy conservation is necessary nowadays. Efficiency improvement is necessary for saving fuel and energy cost. Boiler is a steam generating device provides heat in process industry. The generation of steam is carried out by harnessing thermal energy generated via combustion process. The present study was carried out to improve energy efficiency in steam boiler by modifying firing system in Alexandria National for Refining and Petrochemicals Company ”ANRPC” by changing current fuel ”heavy fuel oil” by alternative fuel ”process fuel gas”. Alternative fuels become very important owing to increased environmental protection concern, the need to reduce dependency on petroleum. The combustion of current fuel(heavy fuel oil ) results in emission of gases associated with global warming, climate change, acid rain and air pollution and This is a result of its specifications .process fuel gas have better properties led to increase the amount of heat saving as combustion air and excess air reduced, in addition, decreased the volume of combustion product especially carbon dioxide from 118,000ton/ year to 15,000ton/ year and get rid of 857 ton/year from sulfur dioxide at leads to environmental pollution reduction, the finding shows boiler efficiency enhanced . Process fuel gas boasts many important advantages over other fuel. So, it is the fuel of choice in this study for energy enhancement.