FGD Gypsum

We have recently commissioned FGP gypsum plant in our power plant, Gypsum produced having 32-37% SO3, with use of petcoke can anybody help wht can be done to increase SO3 in FGD gypsum and how it can be checked that all so3 from fuel has been converted in CaSO4

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re FGD Gypsum

Teoretical content SO3 in dihydrat must be 46 %. If you has less SO3, you use not pure limestone.

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re FGD Gypsum

If you have pure limestone and you are unable to change the scrubbering sistem, you can increase the absorption of SO3 only increasing the reactivity of limestone. This can be done in two ways – thin grinding or compacting and next fine grinding.

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