Larsen & Toubro’s (L&T), green molecules arm L&T Energy Greentech, recently bagged the tender for building India’s biggest green hydrogen plant at Indian Oil Corporation Ltd’s (IOCL) Panipat refinery.
About Green Ammonia:
Ammonia (NH3) is a nitrogen and hydrogen based chemical compound widely used in the production of fertilisers and industrial chemicals.
Ammonia is currently produced from natural gas and, in its production process, emits 2 tonnes of CO₂ for every tonne of ammonia.
For this reason, conventional ammonia is referred to as grey ammonia.
Green ammonia, on the other hand, does not emit CO₂ in its production process.
Production Process:
To produce green ammonia, green hydrogen must first be obtained through a process of water electrolysis.
That is, water is decomposed into hydrogen and oxygen, using electrical energy generated from renewable sources.
The hydrogen is then combined with atmospheric nitrogen through a process known as Haber-Bosch synthesis, which allows hydrogen and nitrogen to react at high pressure and temperature in the presence of a catalyst to form ammonia.
The end result is the production of green ammonia using green hydrogen and atmospheric nitrogen.
Green ammonia production is where the process of making ammonia is 100% renewable and carbon-free.
Applications:
It is widely used in the production of agricultural fertilisers as ammonia is an essential source of nitrogen for plant growth.
It is also used as a raw material in the production of a variety of chemical products, such as nitric acid, synthetic fibres, explosives, dyes, and pharmaceuticals.
It can be used in fuel for engines such as locomotives and shipping, replacing diesel and marine fuel oil.
It can be used as a fuel source for electricity power generation.
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