Application of Zeron 100 in Flue Gas Desulphurisation Plant
Flue Gas Desulphurisation also called as FGD is widely used for removal of sulphur containing gas mainly SO2 from the flue gas discharges of coal fired power stations. Wet Flue Gas Desulphurization (FGD) or scrubber systems are widely acknowledged technology for removing sulphur di-oxide from the exhaust flue gas in coal and oil fired power stations.
Zeron 100 is a composition with microstructure containing 50% austenite and 50% ferrite. This yields the property of strength with ductility and it is available in both cast and wrought iron forms. The excess presence of chromium, molybdenum and nitrogen gives in this alloy provides an excellent resistance to corrosion of chloride containing fluids. The presence of tungsten and copper provides the resistance to acids like sulphuric and hydrochloric acid.
In certain FGD plants hot and strong acids can condense. Zeron 100 has extremely high resistance to organic and mineral acids. Many acid systems contain chlorides, and the unique combination of Zeron 100 offers excellent resistance to those fluids. It has a much reduced corrosion rate than any nickel alloys that are considered. The excellent corrosion resistance of Zeron 100 makes it highly suitable for a wide range of applications in FGD plant.
Cast Zeron 100 is used for valves, pumps and agitators and the wrought product is used for ducting, where the acid condensation may be up to 300 degree C. The other applications of Zeron 100 include sprinkler heads, gas distribution plants, absorption towers and centrifuges. Rather than making the absorber tower in clad steel it can be made of Zeron 100, super duplex stainless steel.
Zeron 100 is also widely in Slurry pumps agitator stools and gas distribution plants. When cast iron are used in FGD pumps, minor repairs cannot be done or repaired whereas Zeron 100 has the advantage that minor damage can be weld and repaired.
It is widely applicable to use this alloy in FGD plants where there is
(1) General corrosion. It has a very lower corrosion rate for welded Zeron 100 comparing to other specified nickel alloys. It can withstand the aggressive environment comparing to other alloys.
(2) Crevice Corrosion: The alloys used for Flue Gas desulphurisation scrubber systems suffer from crevice corrosion. The excellent resistance of Zeron 100 to crevice corrosion is very much applicable in FGD power plants.
It can be readily welded by the common arc process. The combination of good corrosion resistance and high strength has made Zeron 100 excellently suitable for a wide range of application in Flue Gas Desulphurisation plants. The excellent result of the Zeron 100 test has lead to the usage of the alloy for several components in the FGD technology.
MEIP is a ISO 9001: 2008 certified company and it offers comprehensive services including feasibility studies, engineering, procurement, construction, management, operation, maintenance and after sales service of FGD systems. It is the licensee of MHI Japan’s Flue Gas Desulfurization (FGD) plants in India and shall carry out Engineering, Procurement and Construction (EPC) of FGD plants.
Zeron 100 is a composition with microstructure containing 50% austenite and 50% ferrite. This yields the property of strength with ductility and it is available in both cast and wrought iron forms. The excess presence of chromium, molybdenum and nitrogen gives in this alloy provides an excellent resistance to corrosion of chloride containing fluids. The presence of tungsten and copper provides the resistance to acids like sulphuric and hydrochloric acid.
In certain FGD plants hot and strong acids can condense. Zeron 100 has extremely high resistance to organic and mineral acids. Many acid systems contain chlorides, and the unique combination of Zeron 100 offers excellent resistance to those fluids. It has a much reduced corrosion rate than any nickel alloys that are considered. The excellent corrosion resistance of Zeron 100 makes it highly suitable for a wide range of applications in FGD plant.
Cast Zeron 100 is used for valves, pumps and agitators and the wrought product is used for ducting, where the acid condensation may be up to 300 degree C. The other applications of Zeron 100 include sprinkler heads, gas distribution plants, absorption towers and centrifuges. Rather than making the absorber tower in clad steel it can be made of Zeron 100, super duplex stainless steel.
Zeron 100 is also widely in Slurry pumps agitator stools and gas distribution plants. When cast iron are used in FGD pumps, minor repairs cannot be done or repaired whereas Zeron 100 has the advantage that minor damage can be weld and repaired.
It is widely applicable to use this alloy in FGD plants where there is
(1) General corrosion. It has a very lower corrosion rate for welded Zeron 100 comparing to other specified nickel alloys. It can withstand the aggressive environment comparing to other alloys.
(2) Crevice Corrosion: The alloys used for Flue Gas desulphurisation scrubber systems suffer from crevice corrosion. The excellent resistance of Zeron 100 to crevice corrosion is very much applicable in FGD power plants.
It can be readily welded by the common arc process. The combination of good corrosion resistance and high strength has made Zeron 100 excellently suitable for a wide range of application in Flue Gas Desulphurisation plants. The excellent result of the Zeron 100 test has lead to the usage of the alloy for several components in the FGD technology.
MEIP is a ISO 9001: 2008 certified company and it offers comprehensive services including feasibility studies, engineering, procurement, construction, management, operation, maintenance and after sales service of FGD systems. It is the licensee of MHI Japan’s Flue Gas Desulfurization (FGD) plants in India and shall carry out Engineering, Procurement and Construction (EPC) of FGD plants.
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