Method for removing calcium from aluminum chloride solution
A technology of aluminum chloride and solution, which is applied in the direction of aluminum chloride and aluminum halide, can solve the problems of insufficient removal rate and insufficient calcium ion removal precision, and achieve the improvement of chelation ability, large economic benefits and social value, and removal The effect of calcium effect is obvious
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Embodiment 1
[0047] 1) Add 3L of water, 30g of gelatin, 9g of hydroxymethylcellulose, and 150g of sodium chloride to a 5L three-necked flask, stir to dissolve to clear, and obtain the water phase; mix 230.79g of industrial divinylbenzene, 76.92g of industrial styrene, and 426.05 g toluene and 189.35g 200# gasoline were mixed, 9.23g benzoyl peroxide was added, and the solution was cleared by ultrasonic for 20 minutes to obtain an oil phase; the obtained water phase was heated to 55°C, the oil phase was added to it, and the reaction solution was heated to React at 83°C for 10 hours, filter, extract, wash and dry to obtain resin white balls;
[0048] 2) Mix 350g resin dry white balls with 1050g chloromethyl ether, stir and swell at room temperature for 10h, then add 35g zinc chloride as a catalyst, stir well and heat to 45℃ for 10h, filter and wash with water to obtain chloromethylated resin. It is resin chlorine ball. The measured resin chlorine content is 19.2%;
[0049] 3) Mix 300g of resin c...
Embodiment 2
[0052] Replace the amino sugar aqueous solution in step 3 in "Example 1" with a diethanolamine aqueous solution with a mass concentration of 10%. Under other conditions unchanged, a resin containing amine groups and hydroxyl groups (weak base exchange rate: 3.2 mmol / g), dry the resin, mix 200g of dry resin with 1600g of methanol, swell at room temperature for 3h, then add 34g of sodium methoxide methanol solution with a mass concentration of 15%, heat to 35°C and start adding 62.93g of carbon disulfide dropwise for 30min After the addition, react at 45°C for 6 hours, filter, extract, and wash with water to obtain a resin containing amino groups, hydroxyl groups, and mercaptocarboxyl groups. The measured sulfur content is above 1.5 mmol / g.
Embodiment 3
[0054] The amino sugar aqueous solution in step 3 of "Example 1" was replaced with an o-hydroxyaniline aqueous solution with a mass concentration of 10%. Under other conditions unchanged, a resin containing amine groups and hydroxyl groups was obtained (weak base exchange rate: 2.32mmol / g) Dry the resin, mix 200 g of dry resin with 1000 g of dimethyl sulfoxide, swell at room temperature for 3 hours, then add 50 g of a 10% mass concentration of tert-butyl sodium dimethyl sulfoxide solution, and heat to 80 Begin to dropwise add 24% sodium sulfite aqueous solution (containing 90g sodium sulfite) at ℃, and react at 80℃ for 10h after 60min dripping. Filter, extract, and wash to obtain resin containing amine, hydroxyl, and sulfhydryl groups. The sulfur content is measured as 1.62mmol / g.
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