Magnesium Hydroxide for Flue Gas Desulfurization Products > Magnesium Hydroxide (Brucite Powder) »Environmental Protection

Magnesium Hydroxide for Flue Gas Desulfurization

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Commercial name: Brucite
Chemical content: Mg (OH)2
Physical property: Magnesium hydroxide is soluble in dilute acid and ammonium salt solution; it is almost insoluble in water and alcohol. Solubility (18℃) is 0.0009 g / 100 g in water. It is easy to absorb carbon dioxide from the air. When being heated to 350℃, Magnesium Hydroxide will become Magnesium Oxide and water.

Application: Flue Gas Desulfurization

Reaction

Mg(OH)2+SO2 → MgSO3+H2O
MgSO3+SO2+H2O → (Mg(HSO3)2
Mg(HSO3)2+Mg(OH)2 → 2MgSO3+2H2O

Features of Magnesium Hydroxide for Flue Gas Desulfurization

1. High efficient
Chemical reactivity of magnesium hydroxide is much higher than calcium-based desulfurizer; and the molecular weight of magnesium hydroxide is smaller than calcium carbonate and calcium oxide. So the flue gas desulphurization efficiency of magnesium hydroxide is much higher than calcium-based desulfurizer at the same condition. Normally the desulphurization efficiency of magnesium hydroxide is 95~98%, and the desulphurization efficiency of limestone/parget is only 90~95%.
2. Less investment
Because of its flue gas desulphurization efficiency, small size absorption tower can be designed; less circulation size can be used; small power can be supplied. So the whole investment can have a 20% cost savings.
3. Lower operating cost
The main cost is desulfurizer and utilities. The consumption of magnesium hydroxide is around 40% of CaCO3 for removing same quantity SO2. The liquid-gas-ratio is very important while comparing the utilities. The liquid-gas-ratio of CaCO3 system is 15L/m3 and the ratio of Mg(OH)2 system is less than 7L/m3. Moreover, the by product can be sold when use Mg(OH)2 system.
4. Stable operation
There is no scaling when use Mg(OH)2 system. The PH value can be controlled between 6.0 and 6.5 by using Mg(OH)2 system, which can solve the problem of equipment corrosion.

Data Sheet

Grade XK-325 XK-1250 XK-5000 XK-10000
Mg(OH)2 content % 94 94 94 94
Moisture content % 0.5 0.5 0.5 0.5
Loss on ignition % 31 31 31 31
Particle Size D97 45 18 6.5 3
D90 38 15 5.5 2
D50 15 4 2 1.5
Specific surface area (m2/g) ≤6 ≤6 ≤8 ≤8
Density (g/cm3) 2.3 2.3 2.3 2.3
Oil absorption (ml/100g) 50 55 55 55
Whiteness (R45T%) 90 92 95 96
Specific conductivity (uS/cm) 350 350 350 350
Stearic acid % 0.5~2 (will be coated according to customer demands) Grade: XK-1250SA, XK-5000SA, XK-10000SA
Silane % 0.5~1 (will be coated according to customer demands) Grade: XK-1250S, XK-5000S, XK-10000S

Packing

25kg/bag PP woven bag with PE liner/paper bag with PE liner 1000kg/bag, Jumbo bag

Storage

Store in dry and cool place, and keep away from moisture

Transportation

This is not dangerous product. Please make sure that there are covers avoid raining and moisture during transportation.