A resource utilization method of waste adsorption resin in resorcinol production
A technology of adsorption resin and resorcinol, which is applied in the field of resource utilization of waste adsorption resin in resorcinol production, can solve the problems of large water treatment volume, no treatment plan, limited number of resin regeneration, etc., and achieve material saving Cost, reasonable pore structure, and excellent adsorption effect
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Embodiment 1
[0031] Take 200g of the macroporous adsorption resin microspheres discarded in the post-treatment process of the resorcinol hydrolyzate, add 500mL of 20% NaOH aqueous solution for ultrasonic washing, remove soluble impurities, and then wash and dry; add 30 % magnesium acetate solution, the mass ratio of resin to magnesium acetate is 1:1, impregnated under reduced pressure and ultrasonic conditions, and dried in the shade after impregnation to obtain a uniformly mixed material of resin / template precursor; transfer the above material to the tube type In the atmosphere furnace, in the high-purity nitrogen atmosphere, the temperature was raised according to the following program for carbonization: the heating rate was 3°C / min, the maximum carbonization temperature was 800°C; the maximum carbonization temperature was maintained for 1 hr; Wash with deionized water until neutral, filter, and dry to obtain about 110 g of mesoporous carbonized resin microspheres, which are designated as...
Embodiment 2
[0037] Take 200g of the macroporous adsorption resin microspheres discarded in the post-treatment process of resorcinol hydrolyzate, add 500mL20% NaOH aqueous solution for ultrasonic washing, remove soluble impurities, and then wash and dry; the above-mentioned dried resin is directly transferred to In a tubular atmosphere furnace, carbonization was carried out in a high-purity nitrogen atmosphere according to the following temperature program: heating rate 3°C / min, maximum carbonization temperature 800°C; maximum carbonization temperature maintenance time 1hr; about 104g of carbonized resin microspheres were obtained, denoted as CR -1.
[0038] The above-mentioned carbonized resin microspheres were used to fill the adsorption column, and the volume of the packed bed was 100mL. The dynamic adsorption method was used to adsorb and decolorize the raffinate aqueous phase of the m-phenylenediamine hydrolyzate. The flow rate of the upper column liquid was 500mL / hr, and the original ...
Embodiment 3
[0040] Using the same preparation method as CR-1 in Example 2, the only difference is that after the carbonization process is completed, water vapor is introduced into the product for high-temperature activation, the steam flow rate is 10mL / min, the activation temperature is 800°C, and the activation time is 4hr. The obtained carbonized product is designated as ACR-1.
[0041] The above-mentioned carbonized resin microspheres were used to fill the adsorption column, and the volume of the packed bed was 100mL. The dynamic adsorption method was used to adsorb and decolorize the raffinate aqueous phase of the m-phenylenediamine hydrolyzate. The flow rate of the upper column liquid was 500mL / hr, and the original COD of the aqueous phase It was 8000mg / L, and after continuous treatment of 2L of water phase, the COD of the effluent was measured to be 160mg / L.
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