Vc. Uloth et al., MONITORING OF RECOVERY FOULING AND PLUGGING USING FURNACE DRAFT LOSS - NEW LIGHT ON EFFICIENT RB OPERATION, Pulp & paper Canada, 95(6), 1994, pp. 54-59
In studies in four recovery furnaces, pressure drop across the heat tr
ansfer banks was observed to increase gradually after the first 4-10 d
ays of operation. Draft loss did not increase dramatically just before
a water wash was required. Operation of certain sootblowers in the ec
onomizer section of the first furnace was found to be crucial to preve
nt plugging and draft loss, although these sootblowers had little effe
ct on the heat transfer efficiency or degree of fouling in the economi
zer.