Vanadium-containing catalytic cracking poising agent reactivation method
A catalytic cracking and balancing agent technology, applied in chemical instruments and methods, catalyst regeneration/reactivation, physical/chemical process catalysts, etc., to achieve the effect of retaining activity, improving activity, and improving activity stability
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Embodiment 1
[0039] Take by weighing 20 grams of catalytic cracking balancer C1 and carry out fully oxidized carbon removal in a regenerator at 750 ° C. After the carbon content is reduced to 0.013% by weight, it is added to 150 ml of ammonia-ammonium total concentration and is 10mol / L of ammonia and In the ammonium chloride mixed solution (the mass ratio of ammonium chloride and ammonia in ammonia water is 4:1) (pH is about 11.2), heat up to 120°C in a closed reaction kettle, stir for 120min, filter, and use 10 times the catalytic cracking After the deionized water washing of balancing agent weight obtains the catalytic cracking balancing agent HC1 after processing; The catalytic cracking balancing agent HC1 after processing mixes with the phosphoric acid solution that pH value is 4, wherein the weight ratio of catalyst HC1 after processing and phosphoric acid solution is 1:5, stirred at 75°C for 30min, filtered, and dried at 150°C to obtain revived catalyst FC1.
[0040] The vanadium mas...
Embodiment 2
[0042] Weigh 20 grams of catalytic cracking balancer C1 and perform calcination in a regenerator at 650° C. to remove carbon to reduce the coke content to 0.014% by weight. Add to 120ml of ammonia-ammonium concentration of 8mol / L ammonium sulfate and ammonia water mixture (the mass ratio of ammonium sulfate and ammonia in ammonia water is 20:1) in 120ml (pH is about 8.6), stir at 100°C under airtight Contact for 45min, after filtering, add 120ml of ammonium concentration again to the mixed solution of 5mol / L ammonium carbonate and ammonia (the mass ratio of ammonium carbonate and ammonia in ammonia is 1:2) and contact at 100°C for 60min, filter After washing with deionized water 10 times the weight of the catalytic cracking balancer, the treated waste catalytic cracking catalyst HC2 is obtained. The treated catalytic cracking catalyst HC2 is mixed with the ammonium phosphate solution with a pH of 3.5, wherein the weight ratio of the treated catalyst HC2 to the ammonium phospha...
Embodiment 3
[0045] Weigh 20 grams of catalytic cracking balancer C1 and perform calcination at 800° C. to remove carbon to reduce the coke content to 0.014% by weight. Adopting ammonium and ammonia concentration then is that 5mol / L ammoniacal liquor and ammonium carbonate mixed solution (mass ratio 10:1 of ammoniacal liquor in ammonium carbonate and ammoniacal liquor) carry out contact treatment twice, obtain the waste catalytic cracking catalyst HC after handling 3, wherein each treatment Use 100ml of ammonia solution (pH about 9.6), stir in a closed reactor at 140°C for 60min, filter, and wash with deionized water 10 times the weight of the catalytic cracking balancer. Treated waste catalytic cracking catalyst HC3 is mixed with pH 3.5 hydrochloric acid solution, wherein the weight ratio of waste catalytic cracking catalyst HC3 after treatment and the hydrochloric acid solution is 1:3, then according to HC3:Weakly acidic solution weight ratio is 1: 3 mixed with a weakly acidic solution c...
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