Preparation method of gel type strongly basic anion exchange resin
An exchange resin, strong alkaline technology, applied in anion exchange, ion exchange, chemical instruments and methods, etc., to achieve the effect of pressure reduction and fast regeneration
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Embodiment 1
[0053] Add paraformaldehyde solution (221 mL), methanol (36 mL) and ferric chloride 40% (16 mL) solution into a 2L four-neck flask. Stir and control the reaction temperature below 20 °C. Slowly add chlorosulfonic acid (105mL) dropwise and control the temperature in the reactor to not exceed 30°C; cool down the reactor to 10°C. Add white balls (4.2% DVB, 800-450 um, 150 g). Incubate at 10°C for 4hrs. Slowly add 300 mL of methanol dropwise and cool down to less than 10°C. Wash five times with methanol (300 mL).
[0054] Add chlorine spheres and water (378.6 mL) and methylal (227.4 mL) to the 2 L reactor. Trimethylamine solution (40%, 196 mL) was added and incubated for 16 hrs. Set to distilled state. Water (227.4 mL) was slowly added dropwise during the distillation to maintain fluidity. When the temperature is raised to 98-100 ℃, keep it warm for 15 minutes. Cool down to below 70°C. The resin was washed with water until the pH was 8. Hydrochloric acid solution (22.3 mL...
Embodiment 2
[0057] Add paraformaldehyde solution (221 mL), methanol (36 mL) and ferric chloride 40% (16 mL) solution into a 2L four-neck flask. Stir and control the reaction temperature below 20 °C. Slowly add chlorosulfonic acid (105 mL) dropwise and control the temperature in the reactor to not exceed 30 °C; the temperature of the reactor is lowered to 10 °C. Add white balls (4.2% DVB, 800-450 um, 150 g). Incubate at 10°C for 6hrs. Slowly add 300 mL of methanol dropwise and cool down to less than 10°C. Wash five times with methanol (300 mL).
[0058] Add chlorine spheres and water (378.6 mL) and methylal (227.4 mL) to the 2 L reactor. Trimethylamine solution (40%, 196 mL) was added and incubated for 16 hrs. Set to distilled state. Water (227.4 mL) was slowly added dropwise during the distillation to maintain fluidity. When the temperature is raised to 98-100 ℃, keep it warm for 15 minutes. Cool down to below 70°C. The resin was washed with water until the pH was 8. Hydrochloric...
Embodiment 3
[0061] Add paraformaldehyde solution (221 mL), methanol (36 mL) and ferric chloride 40% (16 mL) solution into a 2L four-neck flask. Stir and control the reaction temperature below 20 °C. Slowly add chlorosulfonic acid (116mL) dropwise and control the temperature in the reactor to not exceed 30°C; the temperature of the reactor is lowered to 10°C. Add white balls (4.2% DVB, 800-450 um, 150 g). Incubate at 10°C for 6hrs. Slowly add 300 mL of methanol dropwise and cool down to less than 10°C. Wash five times with methanol (300 mL).
[0062] Add chlorine spheres and water (378.6 mL) and methylal (227.4 mL) to the 2 L reactor. Trimethylamine solution (40%, 196 mL) was added and incubated for 16 hrs. Set to distilled state. Water (227.4 mL) was slowly added dropwise during the distillation to maintain fluidity. When the temperature is raised to 98-100 ℃, keep it warm for 15 minutes. Cool down to below 70°C. The resin was washed with water until the pH was 8. Hydrochloric ac...
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