文献类型：期刊文献

英文题名：Refractory failure in entrained-flow gasifier: Vision-based macrostructure investigation in a bench-scale OMB gasifier

作者：Gong, Yan;Zhang, Qing;Zhu, Huiwen;Guo, Qinghua;Yu, Guangsuo[1]

机构：[1]East China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, POB 272, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Shanghai Engn Res Ctr Coal Gasificat, POB 272, Shanghai 200237, Peoples R China

年份：2017

卷号：205

起止页码：1091

外文期刊名：APPLIED ENERGY

收录：;EI(收录号：20173404064533);WOS:【SCI-EXPANDED(收录号:WOS:000414817100089)】；

基金：This work has been supported by the National Natural Science Foundation of China (51406056; U1604252).

语种：英文

外文关键词：Entrained-flow gasification; Opposed multi-burner (OMB); Refractory corrosion; Refractory erosion; Refractory penetration

摘要：As the key component of the entrained-flow gasifier, the refractory experiences high temperature, while also suffering the impacts of high speed gas flow and massive particle impacts accompanied with molten slag. These issues are causing corrosion and erosion that shorten the gasifier service life. Based on a bench-scale opposed multi-burner (OMB) gasifier, the refractory macrostructure failure is investigated by vision-based techniques. The whole refractory is cut into cross-sections and along the vertical direction to study the corrosion. From these samples, it is possible to classify the refractory failure into six zones by utilizing the penetration depth (calculated by area) coupled with simulations of particle trajectories. Refractory surface erosion is investigated through contour arithmetical mean deviation by employing a light field camera to measure the surface height distribution in each cross section. The space distributions of refractory corrosion and erosion present different characteristics which could guide the future design and optimization of OMB gasifiers. The extent of corrosion distribution can be concluded as follows: impinging up-flow zone > impinging down-flow zone > dome zone > impinging/burner zone > plug-flow zone > cone zone. Meanwhile, the extent of surface erosion distribution can be concluded as follows: impinging down-flow zone > impinging/burner zone > cone zone > dome zone > impinging up-flow zone and plug-flow zone.