Pyrite thermochemistry, ash agglomeration, and char fragmentation during pulverized coal combustion. Quarterly report, March 15, 1988--June 15, 1988
The primary topics in this program are the size distribution of particulates from pulverized coal firing and the thermochemical transformations of pyrite at typical p. f. firing conditions. In the laboratory, both of these aspects involve representative sampling of particulates from a high temperature combustor, as well as synthetic model fuels with specified pore structure and pyrite loadings. During the period March 15, 1988 through June 15, 1988 we continued to develop the components for representative sampling of particulates in our one-dimensional coal flow reactor, and also began to synthesize carbons with controlled porosity and pyrite loadings. The first element in the collection and analysis train, the extraction probe for solid samples, is complete. In shakedown evaluations, the probe met all design specifications and is ready for use. A housing for the probe was designed and is now being fabricated. This component supports the sampling probe at specified positions in the Stanford Coal Flow Reactor (SCFR), and also collects and quenches the effluent from the reactor, and transports it to the laboratory exhaust system. We have synthesized carbons from furfuryl alcohol, according to the procedure developed by Senior and Flagan at Caltech. These carbons are virtually identical to samples prepared at Caltech, and SEM-photomicrographs confirmed that the carbon is glassy with no large pores.
- Research Organization:
- Stanford Univ., CA (United States). High Temperature Gasdynamics Lab.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-87PC79909
- OSTI ID:
- 10164728
- Report Number(s):
- DOE/PC/79909--3; ON: DE93016778
- Country of Publication:
- United States
- Language:
- English
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