Desorption regeneration method for silicon trapping agent in alkali-recovery workshop section
A collector and desorption technology, which is applied in separation methods, filter regeneration, petroleum industry, etc., can solve problems such as inability to realize recycling, and achieve recyclable utilization, less desorption agent consumption, and simple operation methods. Effect
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Embodiment 1
[0022] see Figure 4 , step 1, put 1 g of the silicon trapping agent after absorbing silicon into 100 mL of 0.5 mol / L NaOH solution, use 119W microwave to heat for 0.5 min, and then take it out;
[0023] Step 2, filter the material heated in step 1, put the filter cake (desorbed silicon collector) in a 105°C oven and dry for 24 hours; cool the supernatant in 10°C water, and remove the precipitated White solid, filtered, after filtering, put the filter cake (desorbed silicate) into an oven at 105°C to dry, and the obtained silicate, after experiment and calculation, the desorption rate is 27.18%;
[0024] Step 3, put the dried silicate-desorbed silicon trapping agent into the regeneration process for regeneration, add 2g of the silicate-desorbed silicate trapping agent into 100mL water and stir to form a suspension, add 6g of aluminum salt, stirred for 2h, left the obtained mixed solution for 12h, poured off the supernatant, put the cloudy solution in an oven at 105°C and drie...
Embodiment 2
[0026] Step 1, put 2 g of the silicon-absorbed silicon trapping agent into 100 mL of NaOH solution with a concentration of 0.5 mol / L, heat it with 119W microwave for 0.5 min, and take it out;
[0027] Step 2, filter the material heated in step 1, put the filter cake (desorbed silicon collector) in a 105°C oven and dry for 24 hours; cool the supernatant in 10°C water for 2 hours, put The precipitated white solid matter was filtered, and after filtration, the filter cake (desorbed silicate) was dried in an oven at 105°C, and the obtained silicate had a desorption rate of 19.22% through experiments and calculations;
[0028] Step 3, put the dried silicate-desorbed silicon trapping agent into the regeneration process for regeneration, add 2g of the silicate-desorbed silicate trapping agent into 100mL water and stir to form a suspension, add 6g of aluminum salt, stirred for 2h, the obtained mixed solution was allowed to stand for 12h, the supernatant was poured off, and the turbid ...
Embodiment 3
[0030] Step 1, put 3 g of the silicon-absorbed silicon trapping agent into 100 mL of NaOH solution with a concentration of 0.5 mol / L, heat it with a 500 W microwave for 0.5 min, and take it out;
[0031] Step 2, filter the heated material in step 1, put the filter cake (silicon trapping agent after desorption of silicate) into a 105°C oven and dry for 24 hours; cool the supernatant in 10°C water , filter the precipitated white solid matter, put the filter cake (desorbed silicate) into an oven at 105°C to dry, and the obtained silicate has a desorption rate of 10.88% through experiments and calculations;
[0032] Step 3, put the dried silicate-desorbed silicon trapping agent into the regeneration process for regeneration, add 2g of the silicate-desorbed silicate trapping agent into 100mL water and stir to form a suspension, add 6g of aluminum salt, stirred for 2h, the obtained mixed solution was allowed to stand for 12h, the supernatant was poured off, and the turbid solution w...
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