Oil shale retort run summary: Run C-4

A. Run Characteristics. Retort Run C-4 comprised four combustion run segments in a continuous aboveground retort conducted June 23 through June 27, 1980. The shale was -2.5 +1.3 cm (-1 +1/2 in) from Anvil Points. The retorting rates were approximately 40 and 65 m/d (130 and 220 ft/d), and the feed gases were approximately 30 and 40 percent air in steam for each of the retorting rates. B. Objectives. C-4 was designed and conducted to a) obtain high-rate retorting data for development and verification of a mathematical retort model, b) observe some of the operating characteristics of settling-bed retorts and c) examine instrumentation and control requirements for settling-bed retorts.