Uncategorized

ALCCCACCCS™ AND VAMCO™

By September 4, 2024 No Comments

ALCCCACCCS™

The ASCON Limestone Carbonation Carbon Capture And Carbon Cured Cement Storage™ (ALCCCACCCS™) is a carbon dioxide capture technology, where limestone is heated up to 650 degrees Celsius, converting the limestone into calcium oxide, whereby a flue gas with greenhouse gas (GHG) emissions is passed through the calcium oxide. In essence 100% of the carbon dioxide in the flue gas has an affinity to the calcium oxide, impregnating the calcium oxide and ultimately this exothermic reaction results in the conversion of the calcium oxide to calcium carbonate which is used as a feedstock for carbon cured cement that is a permanent carbon dioxide storage for the built environment and in enhanced weathering (EW) applications. There is no energy penalty as the heat from the exothermic reaction is recirculated, utilising heat exchangers to heat up the next batch of limestone.

_______________________________________________________________________________________

VAMCO™

Value-Added Allotropy Metathesis of Calcium Oxide (VAMCO) is a point source carbon capture technology where limestone is heated up to 650 degrees Celsius in a carbonator converting the limestone into calcium oxide, whereby a flue gas with greenhouse gas (GHG) emissions is passed through the calcium oxide. In essence 100% of the carbon dioxide in the flue gas has an affinity to the calcium oxide, impregnating the calcium oxide and ultimately this exothermic reaction results in the conversion of the calcium oxide to calcium carbonate, the allotropy process and at this point, everything is similar to the ASCON Limestone Carbonation Carbon Capture And Carbon Cured Cement Storage™ (ALCCCACCCS™) carbon capture technology. The calcium carbonate enters a calciner which is heated to between 850 degrees Celsius to 950 degrees Celsius degrading the calcium carbonate in an endothermic process where calcium carbonate converts separately into calcium oxide and carbon dioxide, the metathesis and allotropy processes. The captured carbon dioxide is compressed for utilisation or geological sequestration, whilst the calcium oxide is recirculated to the carbonator for the next carbon capture cycle. The energy penalty is from 0 -2% depending on the season as the initial exothermic carbon capture process heat is utilised in the latter endothermic process and supplemented with auxiliary heat during winter which might have a conservative maximum 2% heat penalty.