engleski

Energy improvements of the ammonia refrigeration system of ammonia production

Many older industrial processes today require reconstruction in order to increase energy efficiency, production capacity and reduce pollution. Often, improving the operation of a single unit operation in the process influences detrimentally other units in the plant that need adjustment to the new situation. This work addresses cooling system of the synthesis section of the ammonia plant, designed by Pullman Kellog LTD. The process of ammonia production can be divided into two parts: preparing the gasses needed for the ammonia reaction and ammonia synthesis with refrigeration loops. The existing plant was reconstructed with application of new technologies, and after reconstruction energy efficiency and production capacity was increased and environmental emissions reduced. With all the improvements, there is the possibility for additional savings because the cooling system remained unchanged. Cooling system was analyzed using techniques for heat integration, in order to further reduce energy expended per unit of final product.

pinch analysis ; energy improvements ; refrigeration system

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