Tuyere coke probing was conducted at the Baosteel Corex Plant in order to gain a better understanding of the structure of the char bed in the melter gasifier （ MG ）. After screening, the specimens were observed by a...Tuyere coke probing was conducted at the Baosteel Corex Plant in order to gain a better understanding of the structure of the char bed in the melter gasifier （ MG ）. After screening, the specimens were observed by an optical microscope to determine the mechanism of the char bed formation. X-ray diffraction （XRD） was used to clarify the degree of graphitization and infer thermal history of coke. The results show that the amount of powder coming from lump coal in the burden is much more than that from coke. Based on this, measures for improving the char bed＇ s permeability are proposed.展开更多
Metallization degree of DRI（R;） reduces with rising oxidization degree of reduction gas（r;） and oxidization degree of reduction gas rises with falling metallization degree of DRI.This is a vicious circle exists in...Metallization degree of DRI（R;） reduces with rising oxidization degree of reduction gas（r;） and oxidization degree of reduction gas rises with falling metallization degree of DRI.This is a vicious circle exists in present operation of C3000.Fuel consumption（r;） in Corex increases with falling R;and decreases with rising r;. However,r;obviously increases with the integrated change of R;and r;.To increase R;and decrease r;,an analysis on energy consumption and its distribution was deployed in this paper.According to the results,proposal was tabled based on decreasing char bed height.展开更多
文摘Tuyere coke probing was conducted at the Baosteel Corex Plant in order to gain a better understanding of the structure of the char bed in the melter gasifier （ MG ）. After screening, the specimens were observed by an optical microscope to determine the mechanism of the char bed formation. X-ray diffraction （XRD） was used to clarify the degree of graphitization and infer thermal history of coke. The results show that the amount of powder coming from lump coal in the burden is much more than that from coke. Based on this, measures for improving the char bed＇ s permeability are proposed.
文摘Metallization degree of DRI（R;） reduces with rising oxidization degree of reduction gas（r;） and oxidization degree of reduction gas rises with falling metallization degree of DRI.This is a vicious circle exists in present operation of C3000.Fuel consumption（r;） in Corex increases with falling R;and decreases with rising r;. However,r;obviously increases with the integrated change of R;and r;.To increase R;and decrease r;,an analysis on energy consumption and its distribution was deployed in this paper.According to the results,proposal was tabled based on decreasing char bed height.
