How does calcium formate reduce carbon dioxide emissions?

The reason why calcium formate can include "carbon reduction" in the process sheet is that it turns two types of waste gases that would otherwise turn into CO ₂ into raw materials.

More than 80% of the tail gas from steel mills or yellow phosphorus furnaces is carbon monoxide (CO), which used to only be ignited and released. 1 m ³ of CO ultimately generates 1.57 kg of CO ₂; Nowadays, after purification, CO is carbonylated with carbide slag (Ca (OH) ₂) at 1.5-6 MPa and 170-200 ℃ to obtain Ca (HCOO) ₂ in one step. CO is no longer burned and is directly "stored" in the product, with a carbon locking capacity of approximately 0.38 tons per ton of calcium formate.

The traditional neutralization method involves the reaction of calcium carbonate and formic acid, resulting in a by-product of 0.44 tons of CO ₂ per ton of product; The tail gas carbonyl method does not have this side reaction, and the process comparison life cycle assessment shows a 20% reduction in global warming potential.

Taking a 50000 ton plant as an example, it digests 45000 Nm ³/h converter gas annually, which is equivalent to reducing CO2 emissions by 52400 tons; If calculated at a carbon price of 90 yuan/ton, carbon assets alone are worth 27 million yuan/year.

In short, calcium formate has turned the CO and waste residue that should have been emptied into high value-added products through a closed-loop path of "treating waste with waste", providing quantifiable and tradable carbon reduction solutions for industries such as steel and phosphorus chemicals.