One of the new products in the ARC product portfolio, ARC T7AR is a heavily ceramic reinforced version of ARC S7, and is designed to handle high temperatures, corrosive chemicals and severe sliding abrasion.
In early
2014, a biomass power plant in Germany contacted Chesterton to see if we could
provide a product to solve an abrasion problem in their flue gas cleaning
system. This was a system from Alstom called a Novel Integrated
Desulphurisation system or ‘NID’. This equipment consists of a ‘J’ duct reactor
where hydrated lime is mixed with the flue gas to remove the pollutants. This
is a dry scrubbing system and this creates high levels of abrasion from the
particles in the reactor. The power plant had seen severe wear to the ceramic
tile lining used in the reactor after only 12 months operating.
With
operating temperatures up to 170C and 70 tons per hour of hydrated lime
injected into the reactor, along with corrosive flue gas, it was seen to be a
very difficult application but the customer chose ARC T7AR to replace the
ceramic tiles.
The ARC
T7AR lining was inspected after 2 years in continuous service and the customer
reported that the lining is still in very good condition. In the ceramic tile
lined areas there are numerous holes completely through the steel substrate.
According
to Alstom, the NID system is suitable for use in power plants (coal, oil shale,
pet coke), waste to energy plants and industrial plants such as steel mills. As
of 2013 a total of 12 GW of plants worldwide have been fitted with this type of
FGD system. A list is available with the names of the plants where the NID
scrubber is in use.
Please contact Nick Wilson to find out if there is a NID
scrubber that needs ARC T7AR in your territory!
Nick Wilson - nick.wilson@chesterton.com
