Method for removing mercury in process of acid making with lead-zinc smelting flue gas
A technology for smelting flue gas and lead-zinc, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as high operating costs, increased risk of equipment maintenance, difficult equipment maintenance, etc., to improve the effect of flocculation and sedimentation , Improve storage stability, ideal effect of settlement
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Embodiment 1
[0023] Add complexing agent 1 to the primary power wave and secondary power wave in the lead-zinc smelting flue gas acid production process, and add complexing agent 2 to the gas phase pipeline from the intermediate washing tower to the secondary power wave. Dosing method In order to set the feeding pipeline on the corresponding original pipeline, a metering pump is used to feed. Among them, the dosage of complexing agent 1 is 150mg / L at the primary dynamic wave, 80mg / L at the secondary dynamic wave, and 150mg / m of complexing agent 2 3 .
[0024] The complexing agent one is a mixture obtained by mixing the sodium dimethyl dithiocarbamate solution and the SRB bacterial liquid in a volume ratio of 7:1 generated by the modification of ammonium dimethyl dithiocarbamate potassium acid. Mixture two is a mixture of hypochlorite and fulvic acid salt, wherein the configuration method of the sodium dimethyldithiocarbamate solution is to mix dimethyldithiocarbamate with a mass concentra...
Embodiment 2
[0031]Add complexing agent 1 to the primary power wave and secondary power wave in the lead-zinc smelting flue gas acid production process, and add complexing agent 2 to the gas phase pipeline from the intermediate washing tower to the secondary power wave. Dosing method In order to set the feeding pipeline on the corresponding original pipeline, a metering pump is used to feed. Among them, the dosage of complexing agent 1 at the primary dynamic wave is 180mg / L, the dosage at the secondary dynamic wave is 100mg / L, and the dosage of complexing agent 2 is 220mg / m 3 .
[0032] The complexing agent one is the mixture obtained by mixing the sodium dimethyl dithiocarbamate solution and the SRB bacterial liquid in a volume ratio of 7.5:2.5 generated by the modification of ammonium dimethyl dithiocarbamate potassium acid. Mixture two is a mixture of hypochlorite and fulvic acid salt, wherein the configuration method of the sodium dimethyldithiocarbamate solution is to mix dimethyldit...
Embodiment 3
[0039] Add complexing agent 1 to the primary power wave and secondary power wave in the lead-zinc smelting flue gas acid production process, and add complexing agent 2 to the gas phase pipeline from the intermediate washing tower to the secondary power wave. Dosing method In order to set the feeding pipeline on the corresponding original pipeline, a metering pump is used to feed. Among them, the dosage of complexing agent 1 at the primary dynamic wave is 200mg / L, the dosage of complexing agent 2 at the secondary dynamic wave is 120mg / L, and the dosage of complexing agent 2 is 250mg / m 3 .
[0040] The complexing agent one is a mixture obtained by mixing the sodium dimethyl dithiocarbamate solution and the SRB bacterial liquid in a volume ratio of 9:3 generated by the modification of ammonium dimethyl dithiocarbamate potassium acid. Mixture two is a mixture of hypochlorite and fulvic acid salt, wherein the configuration method of the sodium dimethyldithiocarbamate solution is t...
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