Abstract

Heat integration studies will only be of benefit if applied to the whole of the process system. Hence, possibilities of heat integration should be investigated at the very first stage of plant design. At such a primary stage, only approximate solutions are required, so as to produce ideas for generating an economically promising flowsheet of the process. The present paper discusses the application of the pinch method to the heat integration of continuous tank reactors into the heat recovery system. Conditions of energy saving through heat integration are investigated, considering the resulting changes in reaction and process parameters. Furthermore, the changes in capital costs of both the reactor and the heat exchanger network are included in the cost estimations when searching for the optimum design. To simplify the design calculations, the general approach in this paper is restricted to an irreversible, exothermic reaction.

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