Abstract:

Taking a dust emission reduction transformation of 2×200MW coalfired units in Xinjiang region as an example, it make a comparison with wet ESP technology and efficient desulfurization dust removal technology. Both of all can make the outlet dust emission concentration lower than the requirement, 5mg/m3(the state, dry basis, 6% O2): wet ESP technology can be more adaptable to wide variety of flue gas load, but investment and operation and maintenance costs were higher than efficient desulfurization dust removal technology; while efficient desulfurization dust removal technology possesses a lower investment and lower running cost.

Key words:

coalfired unit, ultralow emission, wet ESP, efficient desulfurization dust removal technology, technological and economic