| OCR Text |
Show Average feed rates for each of the aforementioned tests can be found in Table II. When no other wastes were fed to the kiln, an average sludge rate of 390 pounds per hour was achieved. When liquid waste and packaged wastes were fed to the kiln, and average sludge feed rate of 360 pounds per hour was achieved. At the point of entry into the kiln, a small ring of sludge was deposited onto the refractory lining. This ring did not grow in size during the test, and disappeared when the sludge feed was terminated. From the standpoint of thermal shock, the ring provided a protective liner for the refractory. At the feed position, steam generation was observed. Devolatilization occured two to four feet downstream of the entry, and was accompanied by an associated flame front. The exit temperature of the kiln was maintained at approximately 1600 degrees F in order to minimize natural gas consumption and maintain ash mode operation. The ash did not appear "tacky" and no residue remained in the kiln after the conclusion of the test. 4 |
