Presented By
Mohammad Shamsus Saleheen
#0602001 Md. Abu Abdullah Al Hasanat #0602002
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Outline of the Presentation
Objectives Simulating an ammonia plant using Aspen HYSYS A simplified block diagram of Haldor Topsoe ammonia production process Steady-state Model Comparison of steady-state simulation results with real plant data Response of the Model to Changes in Process Variables Scope of future work
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Objectives
Building a steady-state model of an industrial scale ammonia plant Comparison of simulation model performance with real plant To study the variation of performance of the plant on some specific variables
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Simulating an Ammonia Plant Using Aspen HYSYS
Creating a component list
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2. Selection of an appropriate Fluid property model 3. Creating Reaction Set
4. 5.
Modeling of the primary reformer Developing the model of ammonia synthesis loop
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A Simplified Block Diagram of Haldor Topsoe Process
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Steady-State Model
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Comparison of Steady-State Simulation Results with Real Plant Data
Variables Product flow rate, kg/hr NH3 % in Product PRF outlet temperature ⁰C H2/N2 after shift convertor PRF outlet composition of CH4 (%) Plant Data 1078 kg/hr 99.34 796 2.896 6.65 Simulation Data 1080 kg/hr 95.26 807.4 2.806 5.85 Deviation from Plant Data, % 0.18553 4.10710 1.43216 3.10773 12.0300
Source: Real plant data obtained from Jamuna Fertilizer Company Ltd, Jamalpur
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Comparison of Steady-State Simulation Results with Real Plant Data
Product ammonia flow rate(1000 NM3/hr) JFCL HYSYS Model 1078 1080
Product ammonia percentage 99.34 95.26
H2/N2 after shift converter 2.896 2.806
PRF outlet temperature (°C) 796 807.4
Source: Real plant data obtained from Jamuna Fertilizer Company Ltd, Jamalpur
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Response of the Simulation Model to Changes in Process Variables
Effect of 5% change in Converter Feed