Pinch technology is the state of the art-technique for design of energy efficient processing that allows the calculation of theoretically minimum data utilities consumption for a process based on the thermal data of process stream. The goal of Pinch analysis is to maximize the process to process heat recovery and minimize the utility requirements of heat exchanger system which offers maximum scope for energy and cost saving. The main factor that must be considered here is the determination of the stream utility used in the plant for extraction process of thermal data in the system that requires optimization. This analysis on production of 50 000MT/Annum isobutylene plant establishes the Grand Composite Curve of the process as a function of temperature and it is important to determine the Pinch point that can be defined as the temperature where the net deficit or surplus is equal to zero. This analysis is based on thermodynamic principle that set energy savings and cost targets prior to the design of a Heat Exchanger Network with ΔTmin=13°C and ΔTmin=14°C, where the process to design and implement is complicated and critical part in order to minimizing the energy consumption and maximizing the heat and energy recovery. From this research, it can be seen that the application of heat integration using Pinch analysis method can minimize the energy usage besides lowering the production cost of 50 000 MT/A isobutylene. By using ΔTmin=13°C, the payback period for investment in this new heat exchanger network in this plant are 4.2 months while ΔTmin=14°C result in lesser payback period of 2.3 months.
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