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- Title
Postmortem analysis of phosphate containing high chrome refractories in a coal water slurry gasifier.
- Authors
Sun Honggang; Li Hongxia; Geng Keming; Yan Shuangzhi; Du Yihao; Wang Han; Zhao Shixian
- Abstract
The startup and shutdown times and operation time of a GE coal water slurry gasifier lined with phosphate containing high chrome brick were real-time tracked. The inner chamber diameter of the gasifier in different operation stages was measured, the thickness of residual brick was calculated, the damage rate of high chrome brick during the whole operation cycle and the microstructure, composition distribution and phase composition of residual brick were analyzed. The results show that the damage rate of phosphate containing high chrome brick in the coal water slurry gasifier is not uniform, which is slow in the early stage, fast in the middle stage, and slow again in the final stage; erosion, penetration and spalling are the main factors resulting in the damage of phosphate containing high chrome brick lining;the specific damage factors are dominant in different stages, which is the reason for the uneven damage rate;the phosphate in high chrome brick inhibits the penetration of silicate glass slag, reduces spalling and prolongs the service life of the furnace lining.
- Subjects
REFRACTORY materials; COAL gasification plants; PHOSPHATES
- Publication
China's Refractories, 2021, Vol 30, Issue 4, p50
- ISSN
1004-4493
- Publication type
Abstract