New generation energy system based on electricity and hydrogen.
Hydrogen and electricity are convertible to each other. It is expected to establish an environmentally friendly energy cycle by using them.
Hydrogen energy characteristics.
|Production method||Raw materials||Energy||Features||Description||Instruments|
|Conventional technology||Steam reforming||Water Methane||Heat||Cheapest method, account for 90% of world's H2 production, emits CO2||Hydrocarbon and water vapor are heated in the presence of catalyst. H2 or mixture of CO and H2 is|
obtained. Light hydrocarbons such as methane, LPG, naphtha are used as raw materials. These materials needs to be desulfurized before use.
|Conventional technology||Electrolysis||Water||Electricity||Used in the area where electricity is inexpensive (PV, wind power, etc.)||Electrolysis is no longer used in Japan because hydrogen production from fossil fuel is much more cheaper.|
|Conventional technology||Byproduct hydrogen|
|Supplies H2 for fuel cell, vehicles enough up to 2020-2030||Hydrogen obtained as byproduct in manufacturing processes of steel, caustic soda, etc|
Low-quality coal waste
|Carbon injected into a furnace reacts with O2 in the air to be CO2 and/or CO, or reacts with water vapor|
to be CO and H2. The obtained CO goes through
reaction with water vapor, it is dissolved into CO2 and H2.
CO + H2O -> CO2 + H2
|Future technologies||Thermochemical, biomass gasification, photolysis, etc.||Water||Heat, electricity, solar (renewable energy)||Use of natural energy Low-density||Thermochemical: dissolves water by using heat or water vapor generated from power generation process.|
Photolysis: dissolve water via catalyst and sunlight.
Coating for prevention of hydrogen diffusion in the measurement cell (hydrogen sulphide) : Gold and Ceramic
For certain configurations, the process fluids generate hydrogen atoms that may be diffused through the metal diaphragm.
The contamination of the oil associated with this diffusion degrades the transmitter’s measurement accuracy and life time.
Thanks to our unique gold and ceramic double-coating diaphragm, the hydrogen’s permeation is stopped.
In this configuration, the transmitters may be used in sulphur reduction installations, hydrogen production units, oil refineries and putrefaction mud treatment works.