Physical simulation of cohesive zone in COREX melter gasifier

In order to simulate the cohesive zone of COREX melter gasifier, a thermal physical model was established. With thermocouples and an observation panel, the bed information inside the model was obtained. In the experiment, the influences of operating parameters, such as discharge rate, wax/maize volume ratio, blast temperature and blast volume on the cohesive zone were investigated. It was found that, with the increase of the selected parameters values, the possibility of raceway collapsing increases. When the disharge rate is increased, the location of the cohesive zone becomes lower and its thickness decreases. When the wax/maize volume ratio is increased, the location of the cohesive zone becomes higher and its thickness increases before collapsing, and its location becomes lower and the thickness increases after collapsing. When the blast temperature is increased, the cohesive zone position becomes higher and its thickness increases before collapsing, and the cohesive zone position becomes lower and its thickness decreases after collapsing. When the blast volume is increased, the cohesive zone position becomes higher and its thickness increases before and after collapsing.