Lime base demercuration adsorbent composition and its manufacture craft

摘要

The present invention relates to a sorbent composition containing core-shell type particles for removing heavy metals, in particular mercury, from gas, said core comprising a calco-magnesium compound having the formula aCaCO3.bMgCO3.xCaO.yMgO. zCa (OH) 2.tMg (OH) 2.ul, where I represents the impurities, a, b, x, y, z and t are each mass fractions 0 and ≤ 100%, u is a mass fraction ≥ 0 and ≤20% by weight, and being coated with a shell having a thickness in the range of 50 nm to 20 μm, and comprising at least one metal salt and a sulfur-based compound and its method of preparation.