Integration of a novel Ammonia synthesis process with ORC cycle as a waste heat recovery unit: Energy and Exergy Analysis

This study aims to design and introduce a novel ammonia synthesis process that uses an organic Rankine cycle as a waste heat recovery system. Two methods of the first and second law of the thermodynamic are used to investigate the proposed system. In this novel system, liquid ammonia is produced at three plug flow reactors, and waste heat of the process is rejected to the evaporator of the ORC cycle. The net-work production and the proposed system's exergy efficiency are obtained at ۲۷۳۵ KW and ۴۱%, respectively. Also, the results show that this system can produce ۴۰۳۸ kgmole/h liquid helium.

Keywords:

Ammonia Synthesis , Organic Rankine Cycle , Waste Heat Recovery , Exergy Analysis