Abstract:
The increasing global demand for ammonia, primarily used as a key raw material in the
production of fertilizers and other chemical compounds, necessitates efficient and costeffective production methods. This thesis aims to address this challenge by conducting a
comprehensive study focused on process modelling, optimization, and cost analysis of
ammonia production from natural gas. The first phase of the thesis involves process
modelling, where a detailed investigation of the Haber-Bosch synthesis process is carried
out. Various process parameters, such as temperature, pressure, and flow rates, are
analysed using advanced simulation tools. A robust and accurate process flow diagram is
developed using Aspen HYSYS, offering valuable insights into the complex kinetics and
dynamics of ammonia synthesis. In the optimization phase, pinch analysis is carried out
with the help of Aspen Energy Analyzer to enhance the efficiency and sustainability of
the ammonia production process. Pinch analysis is used to determine the optimal operating
conditions, maximizing ammonia yield while minimizing energy consumption, utilities
required and greenhouse gas emissions. The final aspect of this thesis involves conducting
a comprehensive cost analysis of ammonia production from natural gas. An economic
evaluation is performed, taking into account various factors such as feedstock prices,
energy costs, capital investments, and environmental compliance. This is done by
activating Aspen Economic Analyzer in the HYSYS simulated model. The objective is to
identify potential cost reduction strategies while ensuring the overall economic viability
and competitiveness of ammonia production. The findings of this thesis contribute
significantly to the field of ammonia production, providing valuable insights into process
optimization and cost-efficient production methods. The developed process model and
optimization strategies offer a reliable framework for industrial implementation, fostering
sustainable ammonia production from natural gas. As the world seeks to address the
challenges of population growth and food security, this research contributes to the global
endeavour to achieve sustainable and responsible production of essential chemical
commodities.
