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Green hydrogen technology.pptx

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This document discusses different methods of hydrogen production and storage. It covers the importance of hydrogen as an alternative energy source and outlines several green hydrogen technologies, including electrolysis methods like alkaline electrolysis, PEM electrolysis, and solid oxide electrolysis. The document also briefly mentions hazards of hydrogen and compares the costs of hydrogen to other fuels.

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• Importance of Hydrogen • Colors of Hydrogen • Green Hydrogen Technologies • Hydrogen Storage and Transportation • Hazards associated with Hydrogen • Hydrogen cost comparison CONTENT 1
• Hydrogen is widely used in chemical & food industry and Refinery processes. • The demand for energy is growing and Oil, coal, and natural gas supplies are not replenished as it is consumed, so an alternative must be found. • Hydrogen can be produced locally from numerous sources. • The use of hydrogen greatly reduces pollution if produced from renewable energy sources like Solar and Wind. WHY HYDROGEN IS SO IMPORTANT? 2
3
H2O H2 + ½ O2 PRODUCTION OF GREEN HYDROGEN ELECTROLYSIS 4
ALKALINE WATER ELECTROLYSER 5
• Alkaline Water Electrolyser has a porous separator (Diaphragm) to physically separate the hydrogen and oxygen gases while still enabling the transport of the liquid electrolyte. • The most established and well-matured technique. • low costs (not using noble electrodes) and long-term stability. • The electrodes are made of carbon steel plates with Nickel coating for corrosion resistance. • The electrodes are also coated with special catalysts which reduces the cell voltage thus the power consumption is also significantly reduced. FEATURES OF ALKALINE WATER ELECTROLYSER 6
ALKALINE ELECTROLYSER CELL 7
PEM ELECTROLYSIS 8
• Polymer electrolyte membrane (PEM) includes a solid electrolyte that electronically isolates the anode from the cathode • This solid electrolyte serves as a physical divider between the anode (Oxygen side) and the cathode (Hydrogen side) and prevents the mixing of the generated gases. This divider enables operations with differential pressure. • The concern for the PEM electrolysers is it presently needs significant amounts of platinum and Iridium for their catalyst layers. • PEMs offer a more compact design with smaller footprint. FEATURES OF PEM ELECTROLYSIS 9
PEM ELECTROLYSIS
SOLID OXIDE ELECTROLYSER CELL (SOEC) 11
SOLID OXIDE ELECTROLYSER CELL (SOEC) 12 • SOEC is the least developed electrolysis technology. • It is developed and demonstrated on laboratory scale and not yet widely commercialized. • SOECs use solid ion-conducting ceramics as the electrolyte, enabling operation at significantly higher temperatures. • Potential advantages are high electrical efficiency, low material cost and the options to operate in reverse mode as a fuel cell or in co-electrolysis mode producing syngas (CO2 + H2) from water steam (H2O).

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Green hydrogen technology.pptx

  • 1. • Importance of Hydrogen • Colors of Hydrogen • Green Hydrogen Technologies • Hydrogen Storage and Transportation • Hazards associated with Hydrogen • Hydrogen cost comparison CONTENT 1
  • 2. • Hydrogen is widely used in chemical & food industry and Refinery processes. • The demand for energy is growing and Oil, coal, and natural gas supplies are not replenished as it is consumed, so an alternative must be found. • Hydrogen can be produced locally from numerous sources. • The use of hydrogen greatly reduces pollution if produced from renewable energy sources like Solar and Wind. WHY HYDROGEN IS SO IMPORTANT? 2
  • 3. 3
  • 4. H2O H2 + ½ O2 PRODUCTION OF GREEN HYDROGEN ELECTROLYSIS 4
  • 6. • Alkaline Water Electrolyser has a porous separator (Diaphragm) to physically separate the hydrogen and oxygen gases while still enabling the transport of the liquid electrolyte. • The most established and well-matured technique. • low costs (not using noble electrodes) and long-term stability. • The electrodes are made of carbon steel plates with Nickel coating for corrosion resistance. • The electrodes are also coated with special catalysts which reduces the cell voltage thus the power consumption is also significantly reduced. FEATURES OF ALKALINE WATER ELECTROLYSER 6
  • 9. • Polymer electrolyte membrane (PEM) includes a solid electrolyte that electronically isolates the anode from the cathode • This solid electrolyte serves as a physical divider between the anode (Oxygen side) and the cathode (Hydrogen side) and prevents the mixing of the generated gases. This divider enables operations with differential pressure. • The concern for the PEM electrolysers is it presently needs significant amounts of platinum and Iridium for their catalyst layers. • PEMs offer a more compact design with smaller footprint. FEATURES OF PEM ELECTROLYSIS 9
  • 11. SOLID OXIDE ELECTROLYSER CELL (SOEC) 11
  • 12. SOLID OXIDE ELECTROLYSER CELL (SOEC) 12 • SOEC is the least developed electrolysis technology. • It is developed and demonstrated on laboratory scale and not yet widely commercialized. • SOECs use solid ion-conducting ceramics as the electrolyte, enabling operation at significantly higher temperatures. • Potential advantages are high electrical efficiency, low material cost and the options to operate in reverse mode as a fuel cell or in co-electrolysis mode producing syngas (CO2 + H2) from water steam (H2O).