Combustion retorting

Gas Combustion Retort. The continuous gas combustion retort (GCR) has been modeled after the earlier batch-operation NTU retort. Although the term "gas combustion" has been appHed to this process, it is a misnomer in that, in a weU-designed and properly operated system, the residual char on the retorted shale suppHes much of the fuel for this process. The GCR is the foremnner of most continuous AGR processes (Table 7). 

Poulson, R.E. Frost, C.M. Jensen, H.B. Characteristics of Synthetic Crude from Crude Shale Oil Produced by In-situ Combustion Retorting, In Shale Oil, Tar Sands, and Related Fuel Sources Yen, T.F., Ed ACS Adv. Chem. Ser. No. 151, 1976, 1. 

Characteristics of Synthetic Crude from Crude Shale Oil Produced by in Situ Combustion Retorting... 

The crude shale oil used in this study was obtained from an in situ combustion retorting experiment at Rock Springs, Wyo. (I, 2), during the last week of the experiment and is considered a representative steady state oil. Properties of the in situ crude shale oil are shown in Table I. 

Crude Oil Produced by In Situ Combustion Retorting, Am. Chem. Soc., Div.FuelChem,Prepr. (1974) 19(2), 175-182. 

The naphthalene/2-methylnaphthalene ratio in oils from combustion retorts in which a significant amount of oil burning has occurred is substantially higher than the ratio in assay oil. This indicates that most cracking in in-situ retorts occurs at high temperatures associated with combustion. Preferential oxidation of alkyl aromatics may also contribute. At these high... 

Dannanberg, R. 0., and A. Matzick, "Bureau of Mines Gas-Combustion Retort for Oil Shale," U. S. Bureau of Mines Report of Investigation 5545 (1960). 

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