29/08/26 Sat 7:59am
Hydrogen Fuel:
- Most abundant element in the universe
- But does not exist by itself in nature
- But it is available bonded to other elements.
- such as water, natural gas, coal, gasoline, methanol
production methodologies:
- Hydrogen can be produced from a number of different sources, including natural gas Coal or biological material.
- Generally two methods followed for hydrogen production.
- Electrolysis
- Synthesis gas production from steam reforming or partial oxidation.
Hydrogen Fuel Production via Electrolysis
- It is a prominant option for hydrogen production from renewable resources.
- It is the process of using electricity to split water into hydrogen and oxygen.
- This reaction takes place in a unit called electrolyzer
Hydrogen Fuel Production via Steam Reforming
- most of the hydrogen produced through intensive process called steam methane reforming
- high temperature steam ( 700 - 1000 ) is used to produce hydrogen from a methane source, such as natural gas.
- Methane reacts with steam under 3-25 bars of pressure in a presence of catalyst to produce hydrogen, carbon monoxide, and small amount of carbon dioxide
- it is a endothermic reaction, heat must be supplied to the process for the reaction to proceed
Steam Methane Reforming reaction:
Water Gas shift Reaction: