A kind of regeneration method of denitrification catalyst
A denitration catalyst, hot ethanol technology, applied in chemical instruments and methods, separation methods, dispersed particle separation, etc., can solve the problem that catalyst structure enhancement cannot achieve practical effect, silica sol solubility is low, and mechanical strength improvement is not fully considered. methods, etc., to achieve the effect of convenient and fast regeneration method, good activity recovery and outstanding regeneration effect.
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Embodiment 1
[0028] A regeneration method for a denitration catalyst, the preparation steps of which are as follows:
[0029] Step 1, put the deactivated denitrification catalyst into an aqueous ethanol solution, vibrate ultrasonically for 10 minutes, and then dry it;
[0030] Step 2, soaking the dried denitrification catalyst in acid solution and alkali solution in sequence, rinsing with deionized water, drying or drying in the air;
[0031] Step 3, put the denitrification catalyst into the electrolytic cell, add electrolyte, electrolyze for 2 hours, take it out and dry it;
[0032] Step 4, soak the dried denitration catalyst in hot ethanol for 2 hours, and then filter it with hot ethanol;
[0033] Step 5, use nitrogen or a mixture of nitrogen and air to purge for 20 minutes;
[0034] In step 6, the purged denitrification catalyst is subjected to surface electrolysis and energization reaction for 10 minutes to obtain an active regenerated denitration catalyst.
[0035] The ethanol conc...
Embodiment 2
[0043] A kind of regeneration method of denitration catalyst, its preparation steps are as follows:
[0044] Step 1, put the deactivated denitration catalyst into the aqueous ethanol solution, vibrate ultrasonically for 15 minutes, and then dry it;
[0045] Step 2, soaking the dried denitrification catalyst in acid solution and alkali solution in sequence, rinsing with deionized water and drying;
[0046] Step 3, put the denitrification catalyst into the electrolytic cell, add electrolyte, electrolyze for 4 hours, take it out and dry it;
[0047] Step 4, soak the dried denitration catalyst in hot ethanol for 4 hours, and then filter it with hot ethanol;
[0048] Step 5, purging with nitrogen for 50 minutes;
[0049] In step 6, the purged denitrification catalyst is subjected to surface electrolysis and energization reaction for 15 minutes to obtain an active regenerated denitration catalyst.
[0050]The ethanol concentration of the aqueous ethanol solution in the step 1 is ...
Embodiment 3
[0058] A regeneration method for a denitration catalyst, the preparation steps of which are as follows:
[0059] Step 1, put the deactivated denitration catalyst into the aqueous ethanol solution, vibrate ultrasonically for 12 minutes, and then dry it;
[0060] Step 2, soaking the dried denitrification catalyst in acid solution and alkali solution in sequence, rinsing with deionized water and drying;
[0061] Step 3, put the denitrification catalyst into the electrolytic cell, add electrolyte, electrolyze for 3 hours, take it out and dry it;
[0062] Step 4, soaking the dried denitration catalyst in hot ethanol for 3 hours, and then filtering with hot ethanol;
[0063] Step 5, using a mixed gas of nitrogen and air to purge for 30 minutes;
[0064] In step 6, the purged denitrification catalyst is electrified by surface electrolysis for 12 minutes to obtain an active regenerated denitration catalyst.
[0065] The ethanol concentration of the aqueous ethanol solution in the s...
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