The Lurgi process is characterized in the use of a static bed furnace, and has the advantages that the gasification temperature is as low as 1100° C.; the removal of ashes is relatively easy; the amount of dust generated is by far less than that in the case of a fluidized bed furnace...
The most used techniques are: ultrasound testing [6–8], including phased array ultrasonic testing [9,10]; radiography testing [11,12]; magnetic particle and other flux leakage-based inspections [13]; approaches based on acoustic emission [14–16]; hybrid testing methods [17]; and several ...