Use of a multi-flue stack

In order to obtain maximum advantage from thermal buoyancy, hot emissions may be combined into the minimum practicable number of ehimneys. A multiplicity of discharge points may thus be avoided. This is particularly important when new plants are being designed or when ehanges are being made to existing processes. 

Gathering multiple off-gas streams into one stack allows control of the emissions and increases the total volume (and load) going to treatment and thus reduees the total emission level. 

This technique can only be implemented in new plants or when existing installations require substantial changes. 

To increase the possibility to measure and control the foundry operation. 

This technique finds multiple implementation around Europe. 

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