Abstract

AbstractEnergy savings in industrial NH3 plant by heat recovery in the waste heat system. Minimization of energy consumption is nowadays a primary goal in the design of NH3 plant. In this context two aspects are particularly important: first, the process steps and their combination must be selected in such a way that the level of energy that has to be supplied to the plant is kept low from the very beginning; second, heat recovery must be optimized by the choice of process conditions and use of appropriate equipment. An industrial NH3 plant built according to these principles can operate at a consumption of as low as 29.5 GJ/t NH3, using proven processes and equipment. The first plant of this new generation with a capacity of 1120 t/d is currently under construction for Canadian Industries Ltd. (CIL) in Canada.

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