Solvent-refined coal combustion

EPRI Final Reports 1235-1, October 1975 1235-3, August 1976 1235-4, July 1976. "Investigating the Storage, Handling, and Combustion Characteristics of Solvent Refined Coal". 

EPRI Final Report 1235-2a, June 1976. "Laboratory Analysis of Solvent Refined Coal-Technical Report 1". EPRI Final Report 1235-2b, June 1976. "Solvent Refined Coal Evaluation Pulverization, Storage and Combustion-Technical Report 2". 

Proposed methods for predicting heats of formation and absolute entropies are tested on two fractions of synthetic crude oil obtained by the EDS process, one sample of H-Coal, one sample of Synthoil, two samples of Solvent Refined Coal, and five pure compounds found in coal liquefaction products. For these samples, the heats of combustion are calculated using predicted values of AHf° and compared in Table IV with observed values. Note that Equations 8 and 9 were used to predict AHf° and S° of the EDS heavy naphtha. Equations 6 and 7 are applied to other samples of coal-derived liquids, and Equations 3 and 4 to the pure compounds. 

Effect of Liquefaction Processing Conditions on Combustion Characteristics of Solvent-Refined Coal... 

The solvent refined coal (SRC) process began as a study on the feasibility of coal de-ashing by Spencer Chemical in 1962. ° The aim was to produce a cleaned combustible fuel that was solid at room temperature. A 50-ton/day plant, located in Fort Lewis, Washington, operated in the SRC mode from its completion in October 1974 until it was modified in late 1976. It later was shut down in 1981. With this change came the new designation SRC-II, and the original process was sometimes designated as SRC-I. In 1972, another 6-ton/day pilot plant was built, in Wilsonville,... 

Figure 6 shows the selective depletion of aliphatic carbons in a coal sample that has been heated at 450 C.9 Similar aliphatic carbon depletions have been noted in 13C CP/MAS studies of reverse combustion and solvent refining processes,9e as seen in Figures 7 and 8. Zilm and coworkers have made extensive use of 13c CP/MAS nmr in a detailed study of a coal liquification... 

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