Fabrication of commercial-scale fiber-reinforced hot-gas filters by chemical vapor deposition
- Minnesota Mining and Mfg. Co., St. Paul, MN (United States). New Products Dept.
Goal was to fabricate a filter for removing particulates from hot gases; principal applications would be in advanced utility processes such as pressurized fluidized bed combustion or coal gasification combined cycle systems. Filters were made in two steps: make a ceramic fiber preform and coat it with SiC by chemical vapor infiltration (CVD). The most promising construction was felt/filament wound. Light, tough ceramic composite filters can be made; reinforcement by continuous fibers is needed to avoid brittleness. Direct metal to filter contact does not damage the top which simplifies installation. However, much of the filter surface of felt/filament wound structures is closed over by the CVD coating, and the surface is rough and subject to delamination. Recommendations are given for improving the filters.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Minnesota Mining and Mfg. Co., St. Paul, MN (United States). New Products Dept.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10139196
- Report Number(s):
- ORNL/Sub-89-SB482/01; ON: DE93010762
- Resource Relation:
- Other Information: PBD: Nov 1992
- Country of Publication:
- United States
- Language:
- English
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