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首页> 美国政府科技报告 >Tubing Wastage in Fluidized-Bed Coal Combustors (Grimethorpe PFBC (Pressurized Fluidized-Bed Combustion) Tube Bank 'E').
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Tubing Wastage in Fluidized-Bed Coal Combustors (Grimethorpe PFBC (Pressurized Fluidized-Bed Combustion) Tube Bank 'E').

机译：流化床煤燃烧器中的管道损耗（Grimethorpe pFBC（加压流化床燃烧）管组'E'）。

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Samples of evaporator tubing from Tube Bank ''E'' of the Grimethorpe pressurized fluidized-bed combustion (PFBC) facility in the UK were examined in the third of a series of studies being conducted at Lawrence Livermore National Laboratory (LLNL) under sponsorship of the US Department of Energy's Morgantown Energy Technology Center (METC). The program is being conducted to identify the mechanism or mechanisms responsible for metal loss (wastage) of in-bed carbon-steel evaporator tubes in bubbling-bed coal combustors. Results of examination suggest that bed conditions were less aggressive than in previous experiments in this combustor; however, tubing wastage was observed in some samples. Observations made on these tubes are consistent with the hypothesis of tubing wastage proposed in reports of previous LLNL studies conducted under this program that the dominant cause of metal loss is exfoliation of the normally-protective oxide scale by impacting bed particulates. Good correlation was also observed with trends noted earlier that microstructure of the tubing steel plays a role in its wastage response. 12 refs., 29 figs., 3 tabs.

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