DESIGN AND SIMULATION OF HIGH PRESSURE (HP) UREA SYNTHESIS LOOP

Abstract

This thesis explores the design and simulation of a High-Pressure Urea Synthesis Loop employing the Stamicarbon Process. The report commences with a meticulous selection of technology through an extensive literature review, covering fundamental aspects of Urea synthesis and comparing available technologies, specifically Stamicarbon and Snamprogetti. The rationale behind choosing the Stamicarbon process is established, laying the foundation for the planned investigation and future project direction. The thesis outlines a comprehensive process flow diagram, detailing Urea production within the High-Pressure Loop. Key raw materials, including Ammonia and CO2, form the basis of the process, with additional components such as Water/Steam and Air also the part of the process. Detailed specifications of the critical equipment within the High-Pressure Loop are provided including, including the HP Reactor, HP Carbamate Condenser, HP Scrubber, and HP Stripper. Material and energy balances were carefully examined across the equipment. The High Pressure Urea synthesis loop is also simulated with the use of Aspen Plus. There was a strong emphasis on improving the economic aspects of this procedure. Designing and simulating a high pressure Urea synthesis loop requires selecting the optimal configuration and operating parameters to reduce overall annual costs.