Green Ammonia Process
- / Undefined Technology Provider
- Generic Green Ammonia Process
- Industrial Gas Production
- Haber-Bosch Process
The majority of global Hydrogen Consumption is for Ammonia (NH3) Production, commonly using the Haber-Bosch process. Green Ammonia is produced through an integrated Process comprising the following Technology Components:
⚡ 𝗘𝗹𝗲𝗰𝘁𝗿𝗼𝗹𝘆𝘀𝗶𝘀 – Splits Water into Hydrogen (H2) and Oxygen (O2).
💧 𝗗𝗲𝗵𝘆𝗱𝗿𝗮𝘁𝗶𝗼𝗻 – Removes Water that is a Poison to the Reactor Catalyst.
🌬️ 𝗔𝗶𝗿 𝗦𝗲𝗽𝗮𝗿𝗮𝘁𝗶𝗼𝗻 𝗨𝗻𝗶𝘁 (𝗔𝗦𝗨) – Separates Nitrogen (N2) from Air via Distillation or Adsorption.
➡️ 𝗖𝗼𝗺𝗽𝗿𝗲𝘀𝘀𝗼𝗿𝘀 – Attain high pressures (~150 bar) to favor NH3 production as the Haber-Bosch Reaction has 4 mols of Gas as Reactants and 2 mols as Products.
⚗️ 𝗔𝗺𝗺𝗼𝗻𝗶𝗮 𝗥𝗲𝗮𝗰𝘁𝗼𝗿 – Uses an Iron Oxide Catalyst to produce NH3. A feed stoichiometric H2:N2 ratio of 3 is ideal.
❄️ 𝗥𝗲𝗳𝗿𝗶𝗴𝗲𝗿𝗮𝘁𝗶𝗼𝗻 – Condenses NH3 to separate it from unreacted Gases.
♻️ 𝗥𝗲𝗰𝘆𝗰𝗹𝗲 – Unreacted Gases are sent back to the Reactor to improve overall conversion from ~15% per-pass to 95%+. A Purge Line might be needed to assist with imbalances in the N2 and H2 feed.
It is important to simulate the Ammonia Reactor to optimize its operating temperature and layout.
This is because if the temperature is:
🔥 𝗧𝗼𝗼 𝗛𝗶𝗴𝗵 – The equilibrium would become unfavorable for NH3 Production as the Reaction is exothermic. This results in excessive Recycle flow rates required.
🧊 𝗧𝗼𝗼 𝗟𝗼𝘄 – The rate of Reaction will slow to a stop, as the Reaction has a high activation energy requirement.
Thus, optimizing the number and volume of Catalyst Beds and the methods of Interstage Cooling (via Heat Exchanger or Quench) is key to maximizing NH3 Production.
Source: Joaquim Tsu, Bryan Research & Engineering, LLC, 28 Feb 2023, Green Ammonia Process Simulation, Linkedin
- Updated by
-  Kokel, Nicolas
- 3/1/2023 9:00 AM
- Added by
-  Kokel, Nicolas
- 3/1/2023 5:24 AM
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