Resourcelized desulfurization, denitrification and demercuration integrated process

Resourcelized desulfurization, denitrification and demercuration integrated process

  • CN 105,582,793 A
  • Filed: 03/25/2015
  • Published: 05/18/2016
  • Est. Priority Date: 03/25/2015
  • Status: Active Application
First Claim
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1. resourcebility desulfurization denitration demercuration integral process, it is characterized in that, this technique has been carried out further upgrading to the naked tower process of a kind of flue gas desulfurization of patent of invention wet flue gas desulfurization absorption tower for power plant (201110004529.7) and patent of invention wet flue gas desulfurization absorption tower (201510113730.7) announcement:

  • utilize the oxidation air oxidation NO going together in the same way with flue gas in this device, the NO of generation2React with water in sprayed slurry on absorption tower and generate HNO3Thereby be absorbed described HNO3With absorbent CaCO in slurries3Reaction generates very easily water-soluble nitrate Ca(NO3

    2, in slurry pool at Ca(NO3

    2Before crystallization, utilize plaster slurry pump to derive part absorption tower slurries to gypsum rotational flow station, and sub-part gypsum eddy flow overflow slurries are imported to desulfurizing waste water processing device, or utilize existing FGD Wastewater Treatment Process will partially absorb tower slurries and import desulfurizing waste water processing device, thereby reduce the Ca(NO of slurry pool of absorption tower slurries3

    2Concentration, utilizes desulfurizing waste water processing device to obtain primary water, described primary water is imported to distillation crystallization apparatus evaporative crystallization and obtain Ca(NO3

    2·

    2H2O;

    The steam that described distillation crystallization apparatus is produced or distilled water return to desulfurizer or its technique water tank to control system for desulfuration and denitration water balance, or the product by described steam or distilled water as boiler replenishing water or other industry, civilian purposes, the steam thermal energy of described distillation crystallization apparatus output can be with heat or the recycling of keeping company.

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