Technology Overview

Green ammonia synthesis is a potential alternative fuel solution in future green energy systems. Green ammonia, produced from electrolysis using renewable energy, can replace fossil fuels in maritime transport and power generation, while also playing an important role in green fertilizer production and long-term energy storage.

Technical Characteristics

Green ammonia production includes hydrogen production via electrolysis, nitrogen production through an Air Separation Unit (ASU), and the ammonia synthesis process. Conventional technologies such as Steam Methane Reforming (SMR) and Autothermal Reforming (ATR) are also referenced, with the addition of carbon capture technologies to reduce CO₂ emissions, resulting in blue ammonia.

Technology	Efficiency	Advantages	Disadvantages
SMR + ASU	High	Widely used	High CO₂ emissions
ATR + ASU	Flexible	Adjustable H:CO ratio	Dependent on fossil fuels
Electrolysis	High	Uses renewable energy	High cost

The production cost of green ammonia remains high, mainly due to dependence on renewable electricity costs and hydrogen electrolysis technology. However, costs are expected to decline in the future with technological advancements and scaling.

Application in Vietnam

In Vietnam, green ammonia has not yet been deployed at a commercial scale. In the long term, it is considered a promising solution for energy storage and use as fuel or industrial feedstock.