Damage Mechanism of High Chrome Bricks for Opposed Multi Nozzle Gasifier and Their Improvement
LIU Huilin, ZHANG Lixin, LIU Ping, DENG Junjie, DUAN Shaopeng
Sinosteel Luonai Materials Technology Corporation, Luoyang 471039, China
Online:2021-12-15
Published:2021-12-10
About author:Liu Huilin, born in 1973, graduated from Wuhan University of Science and Technology in 1997, majoring in inorganic materials. Since then, he has been working at Luoyang Refractory (Group) Co., Ltd. (now named Sinosteel Luonai Materials Technology Co.). In 2005, he got his master’s degree from University of Science and Technology Beijing, majoring in materials. Now he is mainly researching high chrome bricks for coal slurry gasifiers.
LIU Huilin, ZHANG Lixin, LIU Ping, DENG Junjie, DUAN Shaopeng. Damage Mechanism of High Chrome Bricks for Opposed Multi Nozzle Gasifier and Their Improvement[J]. China's Refractories, 2021, 30(4): 1-6.
Table 4 Physical properties of original and improved high chrome bricks
Bricks
Apparent porosity /%
Bulk density / (g · cm-3)
Cold compressive strength /MPa
Thermal shock resistance /cycles
Original high chrome brick
15.6
4.21
158
3
Improved high chrome brick
12.3
4.36
170
7
Fig. 4 Cross section of improved and original high chrome bricks after static slag resistant crucible test Fig. 5 Photos of burner and upper wall of gasifer after one cycle operation
Fig. 4 Cross section of improved and original high chrome bricks after static slag resistant crucible test Fig. 5 Photos of burner and upper wall of gasifer after one cycle operation
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