Adsorbent for removing polar molecules in light hydrocarbon material flow, and preparation method and regeneration method of adsorbent
A technology of polar molecules and adsorbents, applied in the field of regeneration, adsorbents and their preparation, can solve the problems of increasing the preparation process of adsorbents, no more mention of important indicators of adsorbent adsorption capacity, low adsorption heat adsorption capacity, etc. , to achieve the effects of improved selectivity and adsorption capacity, reasonable surface charge distribution, and simple regeneration method
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Embodiment 1
[0038] (1) Weigh 30g of Y-type molecular sieve raw powder with a molecular sieve particle size of 0.1 μm and activated alumina (δ-Al 2 o 3 ) 20g in a beaker, slowly add 2.5g of ethylenediamine pore expander into the beaker, place the beaker in a constant temperature water bath with stirring, adjust the temperature to 30°C, stir and react for 2 hours, then dry it for later use, and obtain the adsorbent Masterbatch, the specific surface area of the adsorbent masterbatch is 210m 2 / g;
[0039] (2) Put 50g of the adsorbent masterbatch prepared in the above step (1) into the ion exchange column, slowly add 10% ion exchange solution dropwise from the top of the exchange column, and the ion exchange solution is composed of 7% KNO 3 and 3% lanthanum nitrate, the dropping rate is 50ml / h, after 12h, the adsorbent is taken out and dried; add 0.4% water glass solution to the dried adsorbent masterbatch, and place it in a rolling ball machine for rolling Ball granulation, drying the s...
Embodiment 2
[0042] (1) Weigh 20g of Y-type molecular sieve raw powder with a molecular sieve particle size of 0.5 μm and activated alumina (δ-Al 2 o 3 ) 30g in a beaker, slowly add 2.5g of triethylamine pore-enlarging agent into the beaker, place the beaker in a constant temperature water bath with stirring, adjust the temperature to 20°C, stir for 2 hours and then dry it for later use to obtain the adsorbent Masterbatch, the specific surface area of the adsorbent masterbatch is 205m 2 / g;
[0043] (2) Put 50g of the adsorbent masterbatch prepared in the above step (1) into the ion exchange column, slowly add 6% ion exchange solution dropwise from the top of the exchange column, and the ion exchange solution is composed of 3% KNO 3 and 3% lanthanum nitrate, the dropping rate is 50ml / h, after 4 hours, the adsorbent is taken out and dried; add 0.2% water glass solution to the dried adsorbent masterbatch, and place it in a rolling ball machine for rolling The pellets were granulated, an...
Embodiment 3
[0046] (1) Weigh 30g of Y-type molecular sieve raw powder with a molecular sieve particle size of 1 μm and activated alumina (δ-Al 2 o 3 ) 20g in a beaker, slowly add 2.5g of N,N-dimethyldodecylamine pore expander to the beaker, place the beaker in a constant temperature water bath with stirring, adjust the temperature to 30°C, and stir for 2h After drying for subsequent use, the adsorbent masterbatch is obtained, and the specific surface area of the adsorbent masterbatch is 240m 2 / g;
[0047] (2) Put 50g of the adsorbent masterbatch prepared in the above step (1) into the ion exchange column, slowly add 10% ion exchange solution dropwise from the top of the exchange column, and the ion exchange solution is composed of 7% KNO 3 and 3% lanthanum nitrate, the dropping rate is 50ml / h, after 12h, the adsorbent is taken out and dried; add 0.4% water glass solution to the dried adsorbent masterbatch, and place it in a rolling ball machine for rolling Ball granulation, drying o...
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