limestone-gypsum wet flue gas desulfurization system，1# desulfurization system is two furnaces and one tower, 2# desulfurization system is one furnace and one tower. when the so2 concentration of the desulfurization inlet is about 1000 mg/nm3, the outlet so2 concentration will rise to about 50 mg/nm3. 1# desulfurization and 2# desulfurization systems are equipped with three circulating pumps.
it is necessary to increase the sulfur content of raw materials by 20~30%, that is, the inlet so2 concentration is increased from 1000mg/nm3 to 1200mg/nm3, and the export so2 emission is ensured not to exceed the standard.
stage 1: add desulfurization synergist, stop a slurry circulating pump, increase the sulfur content of the inlet and observe the desulfurization efficiency.
stage 2: three slurry circulating pumps are operated at the same time, increasing the inlet sulfur and observe the limit value at which the sulfur can be increased.
stage 1:comparative results
1# desulfurization system
2# desulfurization system
the above data shows that after the addition of the desulfurization synergist, the sulfur content of the desulfurization system is significantly reduced.
stage 2: comparative results
from the above operational data, it can be seen that under the operation of the three pumps, the maximum sulfur content of the inlet is increased by 32-44%, the desulfurization system can operate stably, and the sulfur output can still meet the standard discharge.
1- control the export of so2 through polymer desulfurization synergist, so that high-sulfur ore raw materials can be used, which greatly reduces the procurement cost of iron ore raw materials.2-when the average sulfur content of the inlet is lower than 1700 mg/nm3, a circulating pump can be shut down, which can save a lot of electricity bills.
polymer’s desulfurization synergist