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Show Performance of Third Generation Rotary Kiln Incinerator John Petersen and Mike Keller Callidus Technologies Inc. on an automobile. The carbon blocks are held against the sealing surface by a tensioning system to provide a constant loading force on the seal surfaces. This seal is then attached to the kiln ash or feed hood by an expansion joint which allows the entire seal assembly to move axially and radially with the rotary kiln. OPERATING RESULTS A rotary kiln system can be successfully operated a low excess air levels and reliably achieve DRE's better than 99.999%. Previously reported data confirms that organic contaminants are removed from the waste material once the material is heated to temperatures above 1300° F and volatile vapors are allowed to escape from the material. Test results and operating conditions for two specific test cases are are reviewed in the following paragraphs. Test Burn #1 was conducted using clean soils contaminated with hexachlorethane and 1,2,3- trichlorobenzene hydrocarbon components. Results2 on this test showed that with a nominal 1600° F kiln operating temperature and kiln discharge oxygen levels ranging from 3.5% to 1.5% the temperature of exit soil materials averaged 1188° F during the operating period. The secondary combustion chamber operating temperatures ranged from a low of 1784° F to a high of 1861° F with oxygen contents in the secondary chamber ranging between 2.5% to 5.0% high. Of particular interest was the hexachlorethane inlet of 1.33 lb/hr with an output of less than 4.05 x 10"5 lb/hr (99.997% D R E ) . This value presented the minimum reliable quantitation limit.2 The 1,2,3-trichlorobenzene entered at 1.34 lb/hr2 and exited at a reported 2.43 x 10"5 lb/hr (99.998% D R E ) . In this case, the compound was detected but was below the quantization limit; this value represents a calculated estimate. These outlet threshhold limits were obtained with average soil temperatures of 1304 °F and kiln temperatures of 1400° F.2 Excellent V-33 6 |
