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UPDATED 1 Sept: The EI library in London is temporarily closed to the public, as a precautionary measure in light of the ongoing COVID-19 situation. The Knowledge Service will still be answering email queries via email , or via live chats during working hours (09:15-17:00 GMT). Our e-library is always open for members here: eLibrary , for full-text access to over 200 e-books and millions of articles. Thank you for your patience.
Optimize ammonia plant operation. R. Lin, R. de Boer and B. Poe. Hydrocarbon Processing, June 1999, 78(6), 91--100.
Features of a typical ammonia plant are described and illustrated. The main processing operations are natural gas desulphurization, primary reforming, secondary reforming, water gas shift conversion, carbon dioxide removal, methanation, synthesis gas compression, ammonia conversion and associated separation systems. Technical aspects of each process are discussed. Interaction between processing units, weather changes, catalyst deactivation, equipment degradation and fluctuations in feed gas flow and composition mean that ammonia plants do not operate in an optimum way. An economic optimizer model is recommended and results obtained on a 1000 tons/day unit are described and illustrated. A model-based advanced process control system is used and payback is 4 to 7 months. 4 refs.
Abstract details
Journal title: Hydrocarbon Processing
Subjects: Climate science, Process and resources engineering, Compression, Resource use and management, Process control, Refining, Natural gas, Oil and gas, Desulphurization, Carbon dioxide
