Process Design for the Annual Production of 120,000 Tons of Ammonium Phosphate-Based Compound Fertilizers

I. Design requirements: Students are required to use their knowledge of chemical engineering to design a production process for ammonium phosphate-based compound fertilizers with an annual output of 120,000 tons, including the process flow, process parameters, process flow diagrams, as well as strategies for managing waste materials. II. Design basis: 1. Annual production volume: 120,000 tons; 2. Annual working days: 300 days, with 22.5 hours of work per day ； III. Design Content: 1. Overview (the industrial development history and prospects of phosphate fertilizers, the industrial development of phosphate fertilizers in China, and future outlooks) ； 2. Principles for selecting raw materials, evaluation of raw materials ； 3. Properties and uses of phosphoric acid, theoretical basis for the wet-process production of phosphoric acid, process flow and parameters, main equipment, etc ； 4. Classification and uses of phosphate fertilizers ； 5. Raw materials required for the production of ammonium phosphate-based compound fertilizers ； Requirements for material balance and energy balance ； 6. Selection of the production process flow for ammonium phosphate-based compound fertilizers, process flow diagrams, and technical operation requirements for each stage of the process ； 7. Draw a typical control flow diagram for a forced-circulation evaporator ； 8. Safety regulations for operations during the production process and treatment of \"three wastes\" ； 9. Comments on this design (including safety, environmental protection, existing problems, improvement methods, etc.). 　IV. Design outcomes: Design specification. (Design of cover, abstract, table of contents, main text, design summary, references, acknowledgments) Typical control flow diagram of the evaporator. V. Design evaluation: Assess the advancement, applicability, and economic benefits of this design.

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