Method for preparing material containing amorphous iron oxide hydroxide and methods for regenerating the same
An iron oxyhydroxide, amorphous technology, applied in the direction of iron oxide/iron hydroxide, etc., can solve the problem of low content of amorphous iron oxyhydroxide, and achieve the effects of slow oxidation speed, good desulfurization effect and fast oxidation speed.
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Embodiment 1
[0019] Preparation of Materials Containing Amorphous Iron Oxyhydroxide:
[0020] 152 g FeSO 4 Make an aqueous solution and place it in a reactor, and drop 58 grams of solid Na 2 CO 3 , and finally adjust the pH of the mixed aqueous solution to 8, and after reacting for 0.5 hours, filter and wash the filter cake with water until the Na in the filter cake + The content of the filter cake is less than 0.5%, and then the filter cake is made into a water suspension with a solid mass percentage of 30%, and the air is passed through for oxidation until Fe 2+ / Fe 总 If it is less than 1%, the material is completely oxidized, filtered, and dried at 100°C to obtain a material containing amorphous iron oxyhydroxide. The mass percentage of amorphous iron oxyhydroxide in the material is 85%, and the remaining components are Na 2 SO 4 , water and TiO 2 (TiO 2 for FeSO 4 Impurities in the salt, the following examples are the same), and the sulfur capacity of the material is 53%. The ...
Embodiment 2
[0026] Preparation of Materials Containing Amorphous Iron Oxyhydroxide:
[0027] 127 g FeCl 2 Be made into aqueous solution and be placed in reactor, drop into 88 grams of solid K under stirring condition 2 CO 3 , carry out the reaction and adjust the pH of the mixed solution to 8.01 hours, filter, and wash the filter cake with water until the K in the filter cake + The content of the filter cake is less than 0.5%, and then the filter cake is made into a water suspension with a solid mass percentage of 15%, and the air is passed through for oxidation until Fe 2+ / Fe 总 If it is less than 1%, the material is completely oxidized, filtered, and dried at 90°C to obtain a material containing amorphous iron oxyhydroxide. The mass percentage of amorphous iron oxyhydroxide in the material is 80%, and the remaining components are KCl , moisture, ferric oxide and unknown impurities, the sulfur capacity of the material is 49.6%. where K + The determination of content adopts flame ph...
Embodiment 3
[0034] Preparation of Materials Containing Amorphous Iron Oxyhydroxide:
[0035] 152 g FeSO 4 ·7H 2O is made into an aqueous solution and placed in a reaction kettle, and 92 grams of solid NaHCO are dropped into under stirring conditions. 3 , carry out the reaction and adjust the pH of the mixed solution to 8. After 0.5 hours, filter and wash the filter cake with water until the Na in the filter cake + The content of the filter cake is less than 0.5%, and then the filter cake is made into a water suspension with a solid mass percentage of 30%, and the air is passed through for oxidation until Fe 2+ / Fe 总 If it is less than 1%, the material is completely oxidized, filtered, and dried at 45°C to obtain a material containing amorphous iron oxyhydroxide. The mass percentage of amorphous iron oxyhydroxide in the material is 80%, and the remaining components are Na 2 SO 4 , water, TiO 2 , the sulfur capacity of the material is 49.6%.
[0036] Regeneration method 1:
[0037] ...
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