Posted on 16 Jun 2022
Specialized Danieli Centro Combustion has just completed the revamping of the hot-dip galvanizing line #1 at the Marcegaglia plant in Ravenna, Italy.
The turnkey revamping of the hot-dip galvanizing furnace was performed whilst limiting the outage duration to just fifty days, as requested by Marcegaglia.
In fact, the pre-assembly strategy for steel structures, furnace casing and piping, along with a massive pre-test of the automation system, made it possible to save ten days of erection time.
The job consisted of revamping of the horizontal direct-flame fired section and relevant pre-heating section, plus that of the after-pot cooling system.
This, together with the installation of new burners fed by pre-heated combustion air –achieved by a new centralized recuperator in the waste gas duct– allowed for a production increase of 20% and a reduction of 20% of specific furnace natural-gas consumption.
Furthermore, the increase of the cooling capacity of the after-pot cooling section led to a 15% reduction of the specific electric consumption.
Source:Danieli
