Honeycomb SCR smoke denitration catalyst embryoid body and preparation method thereof
A denitration catalyst and honeycomb technology are applied in the field of honeycomb SCR flue gas denitration catalyst embryo body and its preparation, which can solve the problems such as the inability to meet the performance requirements of flue gas denitration catalyst, the preparation method is complicated in operation, and the application scope is narrow, and the plasticity is achieved. Excellent, high denitration efficiency, easy to operate
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Embodiment 1
[0026] Example 1 Preparation of honeycomb SCR flue gas denitration catalyst embryo
[0027] Stir and mix 10 g of ammonium metavanadate, 20 g of ammonium metatungstate, 25 g of niobium oxalate, and 20 ml of an oxalic acid aqueous solution with a concentration of 60% by mass at 50° C. to obtain a mixed solution;
[0028] Put 412g of titanium dioxide, 80g of white clay, 10ml of lactic acid aqueous solution with a mass percentage concentration of 50%, 3g of stearic acid, 275ml of deionized water, and the above mixed solution into a mixer for one time mixing at 80°C for 42min. Then add 80g of ceramic fiber (F-1260 type ceramic fiber, Zhejiang Deqing Lanya Crystal Fiber Co., Ltd.), 3g of fluff pulp (Xinwen Fiber Material Processing Factory in Daye City, Hubei), 2g of hydroxypropyl methylcellulose, glycerin 20ml and 40ml deionized water were mixed for the second time, and mud embryos were obtained after 15 minutes of mixing;
[0029] Wrap the mud embryos with plastic film, and place them i...
Embodiment 2
[0032] Example 2 Preparation of honeycomb SCR flue gas denitration catalyst embryo body
[0033] Stir and mix 2 g of ammonium metavanadate, 40 g of ammonium metatungstate, 5 g of niobium oxalate, and 35 ml of an oxalic acid aqueous solution with a concentration of 60% by mass at 50° C. to obtain a mixed solution;
[0034] Put 590g of titanium dioxide, 11g of white clay, 15ml of aqueous lactic acid solution with a mass percentage concentration of 50%, 8g of stearic acid, 210ml of deionized water, and mixed solution into the mixer for one time mixing at 80℃, and after mixing for 60 minutes Then add 30g of ceramic fiber, 20g of fluff pulp, 10g of hydroxypropyl methylcellulose, 25ml of glycerin, and 50ml of deionized water for secondary mixing. After mixing for 10 minutes, mud embryos are obtained;
[0035] Wrap the mud embryos with plastic film and place them in a cool and humid place (the temperature is about 15℃) for aging treatment, aging time is 6h;
[0036] Put the stale embryo body...
Embodiment 3
[0038] Example 3 Preparation of honeycomb SCR flue gas denitration catalyst embryo body
[0039] Stir and mix 5 g of ammonium metavanadate, 20 g of ammonium metatungstate, 3 g of niobium oxalate, and 30 ml of an oxalic acid aqueous solution with a concentration of 60% by mass at a temperature of 50° C. to obtain a mixed solution;
[0040] Put 525g of titanium dioxide, 30g of white clay, 12ml of lactic acid aqueous solution with a mass percentage concentration of 50%, 10g of stearic acid, 230ml of deionized water, and the mixed solution into the mixer for one time mixing at 80°C. After mixing for 55 minutes Then add 50g of ceramic fiber, 10g of fluff pulp, 5g of hydroxypropyl methylcellulose, 20ml of glycerin, and 50ml of deionized water for secondary mixing. After mixing for 15 minutes, mud embryos are obtained;
[0041] Wrap the mud embryos with plastic film and place them in a cool and humid place (the temperature is about 20℃) for stale treatment, the stale time is 8h;
[0042] Put...
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