Impregnated compounds react with mercury on contact.
Special chemically-treated carbon designed to permanently trap highly toxic mercury gas.
Impregnated compounds react with mercury on contact.
Pellets for gas streams, granules for liquid beds.
Locks mercury into a solid the carbon never releases.
Mercury gas requires a chemical trap, not just a physical one.
If you try to catch mercury with plain carbon, changes in temperature will cause the mercury to simply detach and blow away. By injecting sulfur into the carbon, the mercury hits the sulfur and turns into "mercuric sulfide" (a stable solid). It literally turns from a gas into a rock, meaning it can never escape again.
10–15
% Sulfur
The amount of sulfur baked into the carbon to react with the incoming mercury.
The carbon is one stage in a train, not the whole of it.
We test the gas to see how much mercury is present, how hot the gas is, and what else is in it. This tells us if we need sulfur or iodine.
A large tank (called a guard bed) is filled with the treated carbon and placed directly in front of sensitive machinery to protect it.
As gas flows through, the mercury reacts with the sulfur inside the carbon, instantly turning into a harmless solid rock.
Once the sulfur is all used up, the carbon is completely full of solid mercury. It is carefully removed and disposed of following strict environmental rules.
The grades that fit mercury removal — and what each is good at.
Pellets · Granules
The industry standard. The carbon is soaked in sulfur. When mercury touches it, it creates a permanent solid compound that will never release the toxic gas.
Pellets · Granules
An alternative used in specific gases where sulfur might cause problems. It works the same way but uses iodine to trap the mercury.
What each property actually governs once the bed is running.
How much sulfur is loaded into the carbon. More sulfur means it can catch more mercury, but it needs enough empty space for the gas to enter.
The total weight of mercury the carbon can hold before it is completely full.
Pellets or granules must be sized so the gas can flow through the tank without being blocked.
Normal carbon only holds things physically, like a sponge. Mercury is slippery and will just fall back out of the sponge if the temperature changes. You need the sulfur to chemically glue it in place.
It reacts with the sulfur to become mercuric sulfide. This is a very stable, safe solid rock. It means the mercury is permanently trapped.
No. Because the mercury is permanently chemically locked into the carbon, you cannot wash or bake it out. The full carbon must be safely disposed of as hazardous waste.
Send the stream analysis and the operating conditions, and we will come back with the grade, the bed size and the changeout interval the duty actually needs.