Preparation and regeneration methods of high-effective carbon-based mercury removal adsorbent
An adsorbent, mercury removal technology, applied in separation methods, chemical instruments and methods, gas treatment and other directions, can solve the problems of poor mercury removal effect, complex preparation process, high preparation cost, widening temperature range, simple and acceptable process. Control and reduce the effect of preparation cost
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[0022] A highly efficient carbon-based mercury removal adsorbent, the specific steps of its preparation method are as follows:
[0023] Step 1, mixing fly ash with lye, performing ultrasonic treatment, and etching for 10-12 hours after ultrasonic treatment, to obtain etched fly ash;
[0024] Step 2, adding resin balls and dichloroethane into a three-necked flask at a mass ratio of 2:3, mixing evenly at a temperature of 80°C and a stirring speed of 300-500r / min to prepare a mixed solution;
[0025] Step 3: Add sulfuric acid to the mixed solution prepared in Step 2, continue stirring and heating to 160°C for 6-10 hours, and after cooling to room temperature, filter to obtain sulfonated resin balls;
[0026] Step 4, pickling the sulfonated resin balls prepared in Step 3 in dilute sulfuric acid with a concentration of 50-80%, and washing with deionized water until neutral after pickling, to obtain pretreated resin balls;
[0027] Step 5, mix the pretreated resin balls prepared in...
Embodiment 1
[0039] A method for preparing an efficient carbon-based mercury removal adsorbent, the specific steps are as follows:
[0040] Step 1, mixing fly ash with lye, performing ultrasonic treatment, and etching for 10 hours after ultrasonic treatment, to obtain etched fly ash;
[0041] Step 2, adding resin balls and dichloroethane into a three-necked flask at a mass ratio of 2:3, and mixing evenly at a temperature of 80°C and a stirring speed of 300r / min to prepare a mixed solution;
[0042] Step 3: Add sulfuric acid to the mixed solution prepared in Step 2, continue to stir and heat to 160°C for 6 hours, cool to room temperature, and filter to obtain sulfonated resin balls;
[0043] Step 4, pickling the sulfonated resin balls prepared in Step 3 in dilute sulfuric acid with a concentration of 50%, and washing them with deionized water until neutral after pickling, so as to obtain pretreated resin balls;
[0044] Step 5, mix the pretreated resin balls prepared in step 4 with the etc...
Embodiment 2
[0055] A method for preparing an efficient carbon-based mercury removal adsorbent, the specific steps are as follows:
[0056]Step 1, mixing fly ash with lye, performing ultrasonic treatment, and etching for 12 hours after ultrasonic treatment, to obtain etched fly ash;
[0057] Step 2: Add resin balls and dichloroethane into a three-necked flask at a mass ratio of 2:3, and mix evenly at a temperature of 80°C and a stirring speed of 500r / min to prepare a mixed solution;
[0058] Step 3: Add sulfuric acid to the mixed solution prepared in Step 2, continue to stir and heat to 160°C for 10 hours, and after cooling to room temperature, filter to obtain sulfonated resin balls;
[0059] Step 4, pickling the sulfonated resin balls prepared in Step 3 in dilute sulfuric acid with a concentration of 80%, and washing with deionized water until neutral after pickling, so as to obtain pretreated resin balls;
[0060] Step 5, mix the pretreated resin balls prepared in step 4 with the etchi...
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