01-01-2015, 04:01 PM
Flame heaters, also known as industrial process furnaces or heaters are an important equipment in many chemical processing units. Fiery heaters supply heat to process threads at elevated temperatures. More than 60 per cent of the energy used at the refinery produced by fuel-burning heaters. In addition to plants, heaters is also used in many industries, chemical process, such as ethylene, ammonia, mineral fertilizers and other energy conservation in each fired heater Technology is integrated, it is important with the increase in the cost of primary energy. This study aims to develop a systematic procedure of integrating energy useful for energy conservation and optimization design of laid-off processes of heating integrated. Orientation tools can be used for optimization and quickly reduce the potentially large space of design alternatives to a small set of candidate designs that deserve closer attention. Methods based on pinch analysis fire heater and background process have been adapted for this study. Algorithmic and graphic methods are proposed to predict the energy requirements to the detailed design of the flue heater integrated process. Based on a simplified model of the heater, fire the analytical procedure is developed for integration into the overall process of heater. This procedure helps in calculating the minimum fuel required. minimum and maximum pre-heating of air temperaturesfor energy efficientintegration of fire are also determined by the heater. Shows that forfired heated air heaters with flue gas heat only the minimum required fuel depends on the air temperature, pre-heating, as long as it is within the minimum and maximum range. Process heat below the pinch can be used to further reduce the need for fuel. In this case, shows that the maximum limit up to which can be used for process heat below the cord. In some cases, multiple heaters must meet the total demand TPV. methodology proposed to target the minimum number of elements required to meet energy demand. Fuel and air temperature required for each flue heater preheating, you may need to re evaluated to set achievable goals. With multiple heaters, responsibilities of different heaters can be changed to make it easier to design the entire network of the heat exchanger. Through the new site of the composite curve is maximum potential indirect integration between several plants.Site Grand composite curve is a general requirement of usefulness at any temperature after reaching maximum integration between the different processes through intermediate liquids. the importance of the choice of intermediate parameters of liquid, for indirect integration processes involving heaters demonstrates. Effect of steam as an intermediate liquid has been studied for improved integration between the plants working draft fire heater helps in the assessment of work split between convection and radiation heater fire sections. the detailed design of the flue heater also reported in this study. the application of the proposed of tools for the development and design of the heater is integrated energy efficientfired process demonstrates through case study of crude OIL distillation.