The desulfurization process mainly includes five parts: preparation and supplement of absorbent; Absorbent slurry spray; The droplets in the tower contact and mix with the flue gas; The slurry of regeneration tank reduces sodium base alkali; Gypsum dehydration treatment.
The flue gas from the forged steel furnace is cooled to ≤ 200 ℃ by heat exchange and enters the desulfurization tower from the bottom of the tower through the flue. Several layers of ten nozzles are arranged in the desulfurization tower, and the atomization of fine droplets is uniformly distributed in the dissolution of the desulfurization tower. The flue gas is fully mixed with the spray desulfurization liquid, so that SO2 and dust in the flue gas are fully absorbed and reacted by the desulfurization liquid, so as to achieve the purpose of dust removal and SO2 removal. The net flue gas after desulfurization and washing is dehydrated by the tower top demister, and then enters the chimney through the upper part of the desulfurization tower and is discharged into the atmosphere.
After SO2 is removed by gas-liquid contact in the tower, the desulfurization circulating liquid flows into the sedimentation tank through the pipeline at the bottom of the tower to precipitate the dust here. The clear liquid overflows into the reaction regeneration tank through the upper part, and regenerates with the lime milk introduced from the lime lotion preparation tank in the tank. The regenerated liquid flows into the circulating tank in front of the pump to supplement Na2CO3, and is pumped into the desulfurization tower top to remove SO2 for recycling. CaSO3 produced by regeneration and CaSO4 produced by excess oxygen in flue gas are precipitated and separated in the sedimentation tank.
The above is the content of biological desulfurization. Thank you for checking the information of our company in your busy schedule. If you want to know more, you are welcome to call for consultation! https://www.hneee.net
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