Hydrogen Production — Development of Hydrogen Liquefaction ...
Hydrogen
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Transcript of Hydrogen
HydrogenOpening up new possibilities with the highest thermalconductivity and pressure of all fuel gases
Hydrogen (H2) is an odourless, colourless and tasteless gas that is producedthrough natural gas steam reforming or the electrolysis of water. Lighter than air, itburns with an invisible, clean (carbon-free and soot-free) flame. It is the only fuelgas that does not contain any carbon atoms. H2 has the highest thermalconductivity of all gases. Combined with oxygen, the hydrogen flame reaches atemperature of 2834°C.
It is often mixed with argon to create a range of argon/hydrogen shielding gases forTIG and plasma welding. These shielding gas mixtures are primarily used forwelding austenitic stainless steels and some nickel alloys. Hydrogen can also beused with argon in a range of gas mixtures for plasma-cutting (stainless steel andaluminium mainly).
In addition, it can be combined with oxygen for underwater flame-cutting. Deepercutting applications require higher fuel and oxygen pressures. Hydrogen is idealhere as it is supplied at higher pressures than other fuel gases. In the glassindustry, hydrogen is used to form the rim on glasses.
Hydrogen has a vast application spectrum beyond its value as a fuel gas. It is usedin the production of carbon steels, special metals and semiconductors. In theelectronics industry, it is widely employed as a reducing agent and as a carrier gas.High-purity hydrogen is also used as a carrier gas in gas chromatography.
Other processes that rely on hydrogen include the hydrogenation of vegetable andanimal oils to produce margarine and other fats, hydro-treatment of petroleumproducts, desulphurisation of fuels, heat treatment of metals and leak testing.
Various petrochemical and chemical processes also employ hydrogen. It powersflames and torches in industry and laboratories. Although used as a rocket fuel inliquid form, it is perhaps better known these days as a green source of power forfuel-cell vehicles.
Other applications include HF/DF chemical lasers, solid physics research, bubblechambers in nuclear plants, the synthesis of ammonia and the cooling ofturbogenerators in electrical power plants.
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Hydrogen - Products and Supply > Fuel Gases | Linde Industrial Gases
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