Note: using, partial failure and complete failure of the status of bag
filter were defined as failure rate of that below 3%, 3-30% and above
30%, respectively.
The flue gas containing NOx, SOx, dust
particles from combustion tower was emitted to the atmosphere after
processing with denitration, dedusting and desulphurization in sequence,
and the detailed information was shown in Fig. 1. Samples collecting
from factories were placed in the step of dedusting under the
temperature of 110-180 ℃ after NOx was removed from flue
gas through denitration. The bag filter would execute the operation of
cleaning when the resistance of that reach to the critical point, and
thus could be used repeatedly unless the filter was damaged completely.
The corresponding information of samples with different loading units
was summarized and shown in Table 1 (below 200 MW), Table 2 (200-300 MW)
and Table 3 (above 300 MW), respectively.