Sorg and Wiegand-Glas have celebrated 10 years of trouble-free operation of a batch pre-heater at Wiegand-Glas’ Steinbach, Germany site.

Sorg delivered 10 years of operation with only routine maintenance work required, before the preheater was shut down and inspected in March 2021 prior to the planned reconstruction of furnace No. 1.

The inspection concluded only minor wear on the heat exchangers and screws, confirming Sorg’s structural and technical design of its batch preheater.

The preheater was completely cleaned and worn parts were replaced.

The exhaust gas routing was optimised based on experience of 10 years of operation and further improvements were made to the batch supply, which was modified by EME to further minimise the wear.

Sorg completed the re-commission in October 2021, and the first round of operational results show that the preheater achieves its full performance- even with higher tonnage, and now has a further reduced amount of dust in the flue gas.

Sorg is confident that the system will deliver 10+ more years of considerable energy savings, CO2 reduction and trouble-free operation for Wiegand-Glas.

Sorg installed the first batch preheater on the Wiegand-Glas’s newly constructed furnace No. 1 in 2011.

The preheater, dimensioned for a capacity of 250 tpd, was set up next to the melting tank due to the structural situation inside the building.

All three elements of the Batch3 concept were implemented for the first time, which included Sorg’s preheater, the dust-tight EME-NEND batch charger and the IRD doghouse.

The EME-NEND batch charger sought to eliminate dust around the furnace, while the IRD doghouse for glazing the batch aimed to reduce dust inside the furnace.

The second batch preheater, installed by Sorg at Wiegand-Glas in 2012, will undergo the same treatment in 2022.

Sorg is currently processing an order for another batch preheater in Europe designed for an output of 450 t / d.