Power Plant Desulfurization
Limestone/ gypsum dry process/ semi dry process/ wet process desulphurization is a process to desulfurize flue
gas. It has the advantages of mature technology, low investment, high efficiency, low operating cost, and is
suitable for large capacity units. It is the most widely used desulfurization process in the world.
GkM takes “practical, innovative, environmental protection, low energy consumption” as the concept of
industrial equipment manufacturing. With more than 30-year experience, GkM is committed to providing power plant
and its cooperative enterprises with integrated desulfurizer project solutions and product customization
services. At present, GkM has designed and established dozens of advanced wet desulfurization process production
lines for large power plants such as China Guodian Corporation, China Huadian Corporation, State Power
Investment, CHINA HUANENG, China Resources (Holdings)…Limestone is crushed, grinded and slurried and then transported to the absorption tower. The slurry in the
absorber is sent to the spraying device by circulating pump for spraying.
Raw material: limestone, quick lime (CaO), Gypsum
Powder fineness: 250 mesh, d90; 350 mesh, d90
In order to ensure the comprehensive utilization of desulfurization gypsum and reduce wastewater discharge,
the content of CaCO3 in limestone used for desulfurization should be higher than 90%. The fineness of limestone
powder should guarantee 90% screening rate of 250mesh for boilers burning medium and low sulphur fuel coal, and
90% screening rate of 325mesh for boilers burning medium and high sulphur content coal. Quicklime can also be
used as absorbent. The purity of quicklime should be higher than 85%.