Plug Flow Reactor Simulation in DWSIM | Ammonia Synthesis (N₂–H₂ System)

In this video, we simulate a plug flow reactor (PFR) in DWSIM for the gas-phase synthesis of ammonia from nitrogen and hydrogen.

🔹 Problem Description

The reaction
N2+3H2→2NH3
is carried out in an isothermal plug flow reactor, with thermodynamic properties evaluated using the Peng–Robinson equation of state.

Feed conditions:
Mass flow rate: 3600 kg/h
Temperature: 425 °C
Pressure: 200 bar
Mole fractions: N₂ = 0.5, H₂ = 0.5
Reactor specifications:

Reactor type: Plug Flow Reactor
Volume: 1 m³
Length: 1.5 m
Reaction kinetics:
Rate constant: k = 0.004

🔹 What you will learn
How to define reaction kinetics in DWSIM
How to set up a plug flow reactor
How to analyze outlet composition and ammonia formation

🔹 Software Used
DWSIM – Open Source Process Simulator

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