Filter bag/filter element for removing mercury in flue gas as well as preparation method and application thereof
A removal and filter bag technology, which is applied in the field of flue gas purification and pollution control, can solve the problems of high-efficiency and fixed removal of mercury in all forms, the influence of mercury removal agents on the reuse of flue dust, high equipment investment and operating costs, etc., to achieve mercury removal Superior performance, large market application prospects, and the effect of reducing construction and operating costs
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Embodiment 1
[0035] Cut the polyphenylene sulfide plastic fiber needle felt into a square with an area of 10cm×10cm, a thickness of 2.2mm, and a weight of 4.89g. 0.9 g of sodium selenite and 6.2 g of reduced glutathione were simultaneously added into 60 mL of the solution and stirred until completely dissolved to obtain a selenium-containing mixed solution. Soak the needle-punched felt in the selenium-containing mixed solution and stir for 10 minutes once, and ultrasonically for 10 minutes, add alkali to the solution to adjust the pH=8 to reduce selenite to elemental selenium, and continue to stir for 8 hours until the selenium in the solution is reduced and loaded on the Obtain the selenium-loaded felt body on the needle-punched felt, carry out PTFE coating and protective solution (antistatic agent 30%, antioxidant 40%, antibacterial agent 30%) spray surface treatment after selenium-loaded felt body 110 ℃ of vacuum drying 8h, then 80 Dry again at ℃ for 4 hours, take out the felt body an...
Embodiment 2
[0037]Cut the polyester fiber needle felt into a square with an area of 10cm×10cm, a thickness of 2.4mm, and a weight of 4.77g. 0.46g of ammonium selenite and 17.04mL of sulfurous acid were simultaneously added into 80mL of the solution and stirred until completely dissolved to obtain a selenium-containing mixed solution. Soak the needle-punched felt in the selenium-containing mixed solution and stir for 5 minutes once, ultrasonically for 20 minutes, add alkali to the solution to adjust the pH=8.5 to reduce the selenite to elemental selenium, and continue to stir again for 12 hours until the selenium in the solution is reduced and loaded on the Obtain selenium-carrying felt on the needle-punched felt, carry out porous PU film and protective solution (antistatic agent 30%, antibacterial agent 30%, coupling agent 20%, hydrophobic agent 20% after selenium-carrying felt body 120 ℃ of vacuum drying 6h ) spray surface treatment, then dry again at 90°C for 2 hours, take out the fel...
Embodiment 3
[0039] Cut the polytetrafluoroethylene fiber needle felt into a square with an area of 1m×1m, a thickness of 1.8mm, and a weight of 557g. 135g of calcium selenite and 496g of reduced glutathione were simultaneously added to 5L of the solution and stirred until completely dissolved to obtain a selenium-containing mixed solution. Soak the needle-punched felt in the selenium-containing mixed solution and stir for 5 minutes once, ultrasonic for 15 minutes, add alkali to the solution to adjust pH = 9 to reduce selenite to elemental selenium, and continue to stir for 6 hours until the selenium in the solution is reduced. Obtain selenium-carrying felt on the needle-punched felt, carry out porous PU film and protective solution (antistatic agent 20%, antibacterial agent 10%, coupling agent 40%, hydrophobic agent 30% after selenium-carrying felt body 120 ℃ of vacuum drying 6h ) spray surface treatment, then dry again at 100°C for 2 hours, take out the felt body, cut and sew it into a...
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