| Projects in the metal manufacturing sector |
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There is a high potential for CDM projects in the metal manufacturing sector. Steel, aluminum or magnesium plants emit considerable amounts of greenhouse gases because of their high energy demand in the production process.
Therefore plant owners are invited to implement CDM projects in the area of waste heat recovery and energy efficiency improvement.
Furthermore there is a possibility for greenhouse gas reduction which depends on the production process itself: For example in the conventional magnesium manufacturing sulfur hexafluoride (SF6) is used as a cover gas for molten magnesium to prevent the oxidation of the magnesium in the furnace. SF6 has an extremely high Global Warming Potential (GWP), rated at approximately 22,000 times higher than CO2.
Recent research studies have analysed other effective cover gases to prevent the burning of magnesium during the production process, e.g. HFC 134a. This gas has a lower GWP than SF6, it’s only 1,300. Such greenhouse gas emission cuts have a huge potential to generate carbon credits. |
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