CN104645982B - NOx emissions for the FCC regenerator flue gas and having a CO combustion function and its preparation method of reducing the - Google Patents

NOx emissions for the FCC regenerator flue gas and having a CO combustion function and its preparation method of reducing the Download PDF

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CN104645982B
CN104645982B CN 201510109946 CN201510109946A CN104645982B CN 104645982 B CN104645982 B CN 104645982B CN 201510109946 CN201510109946 CN 201510109946 CN 201510109946 A CN201510109946 A CN 201510109946A CN 104645982 B CN104645982 B CN 104645982B
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张伟
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张伟
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Abstract

本发明公开了一种用于降低催化裂化再生烟气NOx排放并具有CO助燃功能的组合物及其制备方法,以组合物重量计,含有5%‑65%通式为LaAlxZnyMnzO3的钙钛矿组分,15%‑60%的三元类水滑石,5%‑15%除镧之外的镧系元素氧化物,50μg/g‑1000μg/g贵金属钯、铑、钌、铱、锇中的两种组合,5%‑25%的拟薄水铝石。 The present invention discloses a composition and method for preparing FCC regenerator flue gas having CO and NOx emissions of the combustion function for reducing the weight of the composition, comprising 5% -65% perovskite formula LaAlxZnyMnzO3 group min, 15% -60% hydrotalcite, 5% -15% lanthanide oxide other than lanthanum, 50μg / g-1000μg / g noble metal palladium, rhodium, ruthenium, iridium, osmium two combination, 5 to 25% pseudo-boehmite. 本发明的组合物的NOx脱除率更高;组合物中不含等对催化裂化主催化剂有害的成分;双贵金属使组合物的NOx脱除性能更加稳定,寿命更长。 Higher NOx removal rate of the composition of the present invention; like composition free of harmful FCC main catalyst component; noble metal double the NOx removal performance of the composition is more stable and longer life.

Description

用于降低催化裂化再生烟气NOx排放并具有CO助燃功能的组合物及其制备方法 NOx emissions for the FCC regenerator flue gas and having a CO combustion function and its preparation method of reducing the

技术领域 FIELD

[0001] 本发明涉及一种用于降低催化裂化再生烟气NOx排放组合物及其制备方法,具体地说是一种用于降低催化裂化再生烟气NOx排放并具有CO助燃功能的组合物及其制备方法。 [0001] The present invention relates to a method for reducing NOx emissions FCC regenerator flue gas composition and its preparation method, in particular a method for reducing NOx emissions and FCC regenerator flue gas having CO combustion compositions and functional methods for their preparation.

背景技术 Background technique

[0002] 炼油厂中的催化裂化(简称:FCC)装置是NOx最大的单点排放源,对炼厂总的NOx排放的贡献率在40~50%,对控制NOx构成极大挑战。 [0002] refinery catalytic cracking (abbreviation: FCC) apparatus is a single point of maximum NOx emission sources, the contribution to the total NOx emissions in refinery 40 to 50% NOx control pose a great challenge. 随着新的"石油炼制行业污染物排放标准"的实施,大多数企业的NOx排放面临更大的压力。 With the implementation of the new "petroleum refining industry pollutant discharge standards", NOx emissions from most companies face greater pressure. 催化裂化原料油加氢脱氮、优化催化裂化再生器设计、选择性催化还原(SCR)、选择性非催化还原(SNCR)、低温臭氧氧化(LoTOx)和降低NOx排放催化助剂是降低催化裂化再生烟气NOx排放的技术选择,而降低NOx排放催化助剂被认为是在经济上、操作上更具吸引力的有效措施。 FCC feedstock oil hydrodenitrogenation, optimizing FCC regenerator design, selective catalytic reduction (the SCR), selective non-catalytic reduction (SNCR), low ozone oxidation (LoTOx) and reduce NOx emissions is to reduce the catalytic cracking additives renewable technology options flue gas NOx emissions, while reducing NOx emissions catalytic additives is considered to be economically attractive and more effective measures on the operation.

[0003] 尽管降低催化裂化NOx排放助剂是催化裂化助剂家族中出现比较晚的技术之一, 但由于其技术研发、市场需求等方面快速进展,使之成为极具市场潜力的催化助剂。 [0003] Although the FCC to reduce NOx emissions aids is one of the relatively late emergence of catalytic cracking technology aids the family, but because of the rapid progress in its technology development, market demand, making it a great market potential catalytic additives . US5, 021,146公开了一种降低催化裂化NOx污染方法,通过添加以元素重量计0.5wt %-85. Owt % 的MB元素镧(La)、钇(Y)氧化物或钛酸镧组成的降低NOx排放组合物最高可以降低NOx排放40%。 US5, 021,146 discloses a method of reducing the polluting NOx catalytic cracking, by weight as elemental adding 0.5wt% -85. Owt% MB of lanthanum (La), yttrium (Y) oxide or lanthanum titanate composition reducing NOx emissions up compositions can reduce NOx emissions by 40%. 1^5,565,181公开了一种尖晶石或钙钛矿类NOx助剂,这种助剂在烟气中硫氧化物和过剩氧含量较高的情况下依然保持较高的活性。 1 ^ 5,565,181 discloses a perovskite or spinel NOx auxiliaries, adjuvants such higher sulfur oxides in the flue gas and the excess oxygen content in the case of higher activity remains. 通过在助剂中添加IOwt %选自Cu、Zn及其混合物的一种元素或化合物稳定组分来提高助剂的稳定性,助剂中还含有包括任何有利于在反应器中裂化烃类的催化材料(分子筛包括Y型、ReY、USY、CaY、ZSM-5;酸改性白土;无定型硅酸铝。)US7,045,485B公开了一种降低FCC烟气NOx排放组合物。 Aid to improve the stability by adding one element selected IOwt% Cu, Zn and mixtures thereof or compounds in stabilizing component auxiliaries, any auxiliaries comprising facilitate further comprising cracking hydrocarbons in the reactor catalytic material (Y-type molecular sieves include, ReY, USY, CaY, ZSM-5; acid-modified clay;. amorphous aluminosilicate) US7,045,485B discloses a method of reducing NOx emissions from FCC flue gas composition. 它是由:(1)一种酸性载体;(2)铈的氧化物;(3)除Ce之外的其他镧系元素,如镨(Pr)等;(4)优化的一种IB和ΠΒ元素的氧化物,如铜(Cu)、银(Ag)和锌(Zn)等组成。 It is composed of: (1) an acidic support; (2) cerium oxide; (3) other lanthanide elements other than Ce, such as praseodymium (Pr) and the like; (4) an optimization IB and ΠΒ oxides of the elements, such as copper (Cu), silver (Ag) and zinc (Zn) and so on. US7,576,025B2公开了一种适应于降低FCC 再生器烟气NOx组合物,这种组合物是由含镁和铝的阴离子粘土、稀土氧化物、氧化铝和或硅铝氧化物、Y型分子筛组成;但该组合物的NOx脱除率不高。 US7,576,025B2 discloses a method adapted to reduce NOx FCC regenerator flue gas composition, this composition is comprised of anionic clay containing magnesium and aluminum, rare earth oxides, alumina, and silica-alumina or oxides, Y zeolite composition; NOx removal rate, but the composition is not high. US6,379,536B1公开了一种降低FCC烟气NOx排放的组合物,该组合物是由:(1)一种酸性载体;(2)-种碱金属和或碱土金属及其混合物;(3)具有储氧功能的过渡金属氧化物;(4)选自于IB和或Π B能够控制NOx 排放的过渡金属Cu和Ag;该组合物可以使NOx排放降低46% XN101314725披露了一种降低FCC再生烟气中NOx排放的组合物,以所述组合物的重量为基准,该组合物含有:(I) Iwt-9〇¥七%的天然沸石,(2)以氧化物计,0.5¥卜5〇¥七%的选自14、11六、18、118、1¥8、¥8、¥18、 VIIB、VIII族非贵金属和稀土金属中的一种或几种金属组分,和(3)以氧化物计,5wt-95wt %的无机物载体。 US6,379,536B1 discloses a method for reducing NOx emissions in FCC flue gas composition, the composition is comprised of: (1) an acidic support; (2) - alkali metal or alkaline earth metal and mixtures thereof; (3 ) a transition metal oxide having oxygen storage function; and (4) is selected from IB and Π B or a transition metal capable of controlling NOx emissions of Ag and Cu; and the composition can reduce the NOx emissions of 46% XN101314725 discloses a method for reducing FCC regeneration flue gas NOx emissions composition on a weight basis of the composition, the composition comprising: (I) Iwt-9〇 ¥ seven percent of the natural zeolite, (2) an oxide basis, 0.5 ¥ Bu 5〇 ¥ seven percent of the six selected 14,11, 18,118,1 ¥ 8, ¥ 8, ¥ 18, VIIB, VIII non-noble metal and rare earth metal group of one or more metal components, and (3 ) on an oxide basis, 5wt-95wt% inorganic carrier. CNlO 1311248公开了一种降低FCC再生烟气中NOx排放的组合物,该组合物以所述组合物的重量为基准,含有以氧化物计:(I)5wt-98.9wt %的酸性氧化物载体, (2)0.5wt-30wt%的磷,(3)0. lwt-35wt%的选自IB和IIB族的一种或几种金属组分,和(4) 0 · 5wt_30wt %的稀土金属组分。 CNlO 1311248 discloses a composition for reducing the FCC regenerator flue gas NOx emissions, the composition by weight of the composition as a reference, in terms of oxide comprising: (I) 5wt-98.9wt% of the acidic oxide support , (2) 0.5wt-30wt% phosphorus, one or more metal component (3) 0. lwt-35wt% selected from IB and IIB, and (4) 0 · 5wt_30wt% of rare earth metal Minute.

[0004] 上述降低催化裂化NOx排放组合物都可以有效地降低催化裂化烟气中的NOx排放, 但也存在NOx脱除率相对较低、组合物中含有对催化裂化主催化剂有副作用的元素如IA或IB和或ΠΒ元素Cu、Ag,这类元素在催化裂化反应过程中,会导致催化裂化主催化剂活性降低、气体产品中氢气产率增加等问题。 [0004] The above-described compositions to reduce NOx emissions cracking can effectively reduce NOx emissions in FCC flue gas, but there is a relatively low NOx removal rate, contained in the composition has an adverse effect on the main FCC catalyst elements such as IA or IB and ΠΒ or elements Cu, Ag, such elements in a catalytic cracking reaction, leads to the main catalyst cracking activity decreases, problems such as an increase in product gas hydrogen yields.

发明内容 SUMMARY

[0005] 本发明的目的是提供一种用于降低催化裂化再生烟气NOx排放并具有CO助燃功能的组合物及其制备方法,这种组合物的NOx脱除率更高、不含对FCC主催化剂产生负作用的成分。 [0005] The object of the present invention is to provide a composition and method for preparing FCC regenerator flue gas having CO NOx emissions and combustion function is reduced, a higher NOx removal rate of such a composition, free of FCC a main catalyst component of a negative effect.

[0006] 为了解决上述技术问题,本发明采用的技术方案是:一种用于降低催化裂化再生烟气NOx排放并具有CO助燃功能的组合物,含有以组合物重量计的以下成分: [0006] To solve the above technical problem, the technical solution adopted by the invention is: a method for reducing NOx emissions from FCC regenerator flue gas and having a CO combustion functional composition comprising the following ingredients in the weight of the composition:

[0007] (1)含有以组合物重量计5%_65%通式为LaAlxZnyMn zO3的钙钛矿组分,x = 〇-l,z = 〇-〇.4,y < l-(x+z); [0007] (1) the composition contains from 5% _65% by weight of the formula of the perovskite component LaAlxZnyMn zO3, x = square-l, z = square-〇.4, y <l- (x + z );

[0008] (2)含有以组合物重量计15 % -60 %的锌镁铝三元类水滑石、铁镁铝三元类水滑石、锰镁铝三元类水滑石和钴镁铝三元类水滑石中的一种或几种混合物; [0008] (2) the composition contains 15% -60% by weight of magnesium aluminum Hydrotalcite, Mg-Al Hydrotalcite iron, manganese and magnesium aluminum hydrotalcite-cobalt ternary Mg-Al three yuan one or more of a mixture of hydrotalcite;

[0009 ] (3)含有以组合物重量计5 % -15 %除镧之外的镧系元素氧化物; [0009] (3) the composition contains from 5% to 15% by weight of lanthanide oxide other than lanthanum;

[0010] (4)含有以组合物重量计50yg/g-1000yg/g贵金属钯(Pd)、铑(Rh)、钌(Ru)、铱(Ir)、锇(Os)中的两种组合。 [0010] (4) by weight of the composition containing 50yg / g-1000yg / g noble metal palladium (Pd), rhodium (Rh), ruthenium (Ru), iridium (Ir), a combination of two osmium (Os) of.

[0011] (5)含有以组合物重量计5 % -25 %的拟薄水铝石。 [0011] (5) the composition contains 5-25% by weight of pseudo-boehmite.

[0012] 所述组合物的比表面积不小于50m2/g。 [0012] The specific surface area of ​​the composition is not less than 50m2 / g.

[0013] 所述组合物的比表面积为70m2/g-200m2/g。 [0013] The specific surface area of ​​the composition is 70m2 / g-200m2 / g.

[0014] 优选,含有以组合物重量计的以下成分: [0014] Preferably, the weight of the composition contains the following ingredients:

[0015] (1)含有以组合物重量计1〇% -60 %通式为LaAlxZnyMnzO3的钙钛矿组分; [0015] (1) the composition contains 60% by weight 1〇 the formula of the perovskite component LaAlxZnyMnzO3;

[0016] (2)含有以组合物重量计15-55%的锌镁铝三元类水滑石和锰镁铝三元类水滑石; [0016] (2) the composition contains 15-55% by weight of magnesium aluminum and manganese Hydrotalcite Mg-Al Hydrotalcite;

[0017] (3)含有以组合物重量计7 % -12 %铈、镨、钕的混合物的氧化物; [0017] (3) to weight of the composition containing 7-12% oxide of cerium, praseodymium, neodymium mixture;

[0018] (4)含有以组合物重量计100yg/g-700yg/g钯(Pd)+铑(Rh)或钯(Pd)+钌(Ru),钯和铑的比例为10:1-0.5:5或钯和钌的比例为10:1-0.5:5。 [0018] (4) the composition contains by weight 100yg / g-700yg / g of palladium (Pd) + rhodium (Rh) or palladium (Pd) + ruthenium (Ru), palladium and rhodium ratio of 10: 1-0.5 : 5 ratio, and ruthenium or palladium is 10: 1 to 0.5: 5.

[0019 ](5)含有以组合物重量计10 % -20 %的拟薄水铝石。 [0019] (5) the composition contains 10% by weight to 20% by pseudo-boehmite.

[0020] 所述钯和铑的比例为7:1-1:4或钯和钌的比例为7:1-1: 4。 [0020] The palladium and rhodium in a ratio of 7: 1 to 1: the ratio of ruthenium or palladium, and 4 of 7: 1 to 1: 4.

[0021] 上述的用于降低催化裂化再生烟气NOx排放并具有CO助燃功能的组合物的制备方法,包括以下步骤: [0021] The method for preparing FCC regenerator flue gas NOx emissions and combustion with CO reduced functional composition, comprising the steps of:

[0022] (1)按配比,将钙钛矿组分、三元水滑石组分和拟薄水铝石组分在反应釜中机械混合均匀; [0022] (1) according to the ratio, component perovskite, hydrotalcite component and quasi boehmite mechanical components mixed in the reaction vessel;

[0023] (2)称取除镧之外的镧系元素的硝酸盐或氯化物放入反应釜中,加入蒸馏水,使溶液的体积能够进行等体积浸渍;在搅拌情况下,慢慢加入到步骤(1)的反应釜中,静置18-24 小时; [0023] (2) Weigh lanthanide nitrate or chloride of lanthanum addition into a reaction kettle, distilled water was added to bring the volume of the solution can be incipient wetness impregnation; in with stirring, was slowly added to the the reaction vessel of step (1) was allowed to stand for 18-24 hours;

[0024] (3)将上述浸渍物在烘箱中120-140 °C烘烤2-4小时,然后在马弗炉中550-650 °C下焙烧4-6小时; [0024] (3) above was immersed in an oven bake 120-140 ° C for 2-4 hours, and then calcined in a muffle furnace at 550-650 ° C 4-6 hours;

[0025] (4)用贵金属水溶液浸渍步骤(3)得到的组合物,静置8-12小时,将上述浸渍物在烘箱中120-140°C烘烤2-4小时,然后在马弗炉中550-650 °C下焙烧4-6小时,得到目的组合物。 [0025] (4) obtained in the step of impregnating an aqueous solution of noble metal (3) composition was allowed to stand 8-12 h, the impregnation baked in an oven at 120-140 ° C for 2-4 hours and then in a muffle furnace calcined in 4-6 hours 550-650 ° C, to give the desired composition.

[0026]本发明的有益效果是:组合物的NOx脱除率更高;组合物中不含等对催化裂化主催化剂有害的成分;双贵金属使组合物的NOx脱除性能更加稳定,寿命更长。 [0026] Advantageous effects of the present invention are: a higher NOx removal rate of the composition; and the like of the composition does not contain ingredients harmful to the main catalyst cracking; noble metal double the NOx removal performance of the composition is more stable, more life long.

具体实施方式 Detailed ways

[0027]下面结合具体实施方式对本发明作进一步详细说明: [0027] DETAILED DESCRIPTION The following embodiments of the present invention will be further described in detail:

[0028]本发明的用于降低催化裂化再生烟气NOx排放并具有⑶助燃功能的组合物,组合物组成为:(1)含有以组合物重量计5wt %-65wt %通式为LaAlxZnyMnzO3的钙钛矿组分,优选10wt_60wt%,x = 〇-l,z = 〇-〇.4,y < l_(x+z); (2)含有以组合物重量计15wt_55wt%的锌镁铝三元类水滑石、铁镁铝三元类水滑石、锰镁铝三元类水滑石和钴镁铝三元类水滑石及其混合物;优选15wt-55wt %的锌镁铝三元类水滑石、锰镁铝三元类水滑石;(3)含有以组合物重量计5wt % -20wt %除镧之外的镧系元素氧化物,优选I Owt % -15wt %除镧之外的镧系元素氧化物,如铺、镨、钕及其混合物的氧化物;(4)含有以组合物重量计50yg/g-1000yg/g 选自贵金属钯(Pd)、铭(Rh)!了(Ru)、铱(Ir)、锇(Os)的双贵金属,优选100yg/g-700yg/g钯(Pd)+铑(Rh)、钯(Pd)+钌(Ru),钯和铑、钌的比例为10:1-0.5:5,优选7:1-1:4。 [0028] The present invention FCC regenerator flue gas for reducing NOx emissions and combustion ⑶ function having a composition, the composition consisting of: (1) the composition contains 5wt% -65wt% by weight of calcium LaAlxZnyMnzO3 of the formula titanium component, preferably 10wt_60wt%, x = square-l, z = square-〇.4, y <l_ (x + z); (2) the composition contains 15wt_55wt% by weight of magnesium aluminum ternary hydrotalcite, Mg-Al hydrotalcite iron, manganese and Mg-Al hydrotalcite Mg-Al hydrotalcite cobalt and mixtures thereof; preferably of 15wt-55wt% Mg-Al hydrotalcite zinc, manganese and magnesium aluminum hydrotalcite; (3) the composition contains 5wt% -20wt% by weight of a lanthanoid element other than lanthanum oxide, preferably I Owt% -15wt% lanthanide oxide other than lanthanum, the shop oxide, praseodymium, neodymium, and mixtures thereof; (4) the composition contains by weight 50yg / g-1000yg / g noble metal selected from palladium (Pd), Ming (Rh) of (Ru), iridium (Ir! ), osmium (Os) bis noble metal, preferably 100yg / g-700yg / g of palladium (Pd) + rhodium (Rh), palladium (Pd) + ruthenium (Ru), palladium and rhodium, ruthenium ratio of 10: 1 to 0.5: 5, preferably 7: 1-1: 4. (5)含有以组合物重量计5wt % -2 5wt %的拟薄水错石,优选I Owt % -20wt %的拟薄水错石。 (5) to weight of the composition containing 5wt% -2 5wt% of pseudoboehmite zircon, preferably of I Owt% -20wt% pseudoboehmite zircon.

[0029] 本发明提供的一种降低催化裂化烟气NOx排放,并同时具有CO助燃功能的组合物的比表面积不小于50m2/g,最好为70m 2/g-200m2/g。 [0029] A method for reducing the specific surface area FCC flue gas NOx emissions, CO combustion while having functional composition of the present invention to provide not less than 50m2 / g, preferably 70m 2 / g-200m2 / g.

[0030] 本发明提供一种降低催化裂化烟气NOx排放,并同时具有CO助燃功能的组合物的制备是由以下方法但不仅限于以下方法制备。 Preparation [0030] The present invention provides a method of reducing NOx emissions from FCC flue gas, and also has the function of CO combustion compositions are prepared by the following method, but the method is not limited. ⑴称取适量的统式为LaAl xZnyMnzO3的钙钛矿组分、三元水滑石组分和拟薄水铝石放入烧杯中;(2)将三种组分机械混合均匀;(3)称取适量除镧之外的镧系元素,如铈、镨、钕的硝酸盐或氯化物放入另一个烧杯中,加入适量的蒸馏水,是溶液的体积能够进行等体积浸渍;(4)将除镧之外的镧系元素,如铈、镨、钕的硝酸盐或氯化物溶液在搅拌情况下,慢慢加入盛有适量的统式为LaAl xZnyMnzO3的钙钛矿组分和三元水滑石组分的烧杯中,静置18-24小时。 ⑴ weighed amount of component a perovskite-type system LaAl xZnyMnzO3, the hydrotalcite component and a quasi boehmite into a beaker; (2) the three components are mechanically mixed uniformly; (3), said take appropriate lanthanide elements other than lanthanum, such as cerium, praseodymium, neodymium nitrate or chloride into a separate beaker, adding an appropriate amount of distilled water, the volume of the solution can be incipient wetness impregnation; (4) in addition to the lanthanide other than La, such as cerium, praseodymium, neodymium nitrate or chloride solution with stirring, was added slowly filled with an appropriate amount of a perovskite type system components LaAl xZnyMnzO3 group and hydrotalcite min in a beaker, allowed to stand for 18-24 hours. (5)将上述浸渍物在烘箱中120-140°C烘烤2-4小时,然后在马弗炉中550-650 °C下焙烧4-6小时。 (5) The above impregnation 120-140 ° C baked in an oven for 2-4 hours, and then calcined in a muffle furnace at 550-650 ° C 4-6 hours. (6)用适量的贵金属水溶液浸渍步骤(5) 得到的组合物,静置8-12小时,将上述浸渍物在烘箱中120-140 °C烘烤2-4小时,然后在马弗炉中550-650°C下焙烧6小时,得到本发明的目的组合物。 (6) obtained in the step of impregnating an aqueous solution with a suitable amount of a noble metal (5) composition was allowed to stand 8-12 h, the impregnation baked in an oven at 120-140 ° C for 2-4 hours and then in a muffle furnace calcined for 6 hours 550-650 ° C, to obtain the composition object of the present invention.

[0031] 以下将通过具体实施例对本发明作进一步的阐述,所有的实施例完全按照本发明所述的步骤进行操作。 [0031] Here it will be further illustrated by way of specific embodiments of the present invention, embodiments, examples and embodiments, all the steps in the present invention.

[0032] 实施例1 [0032] Example 1

[0033] 称取通式为LaAlo.AZntL1Mno.5〇3的钙钛矿52.0g(干基为100wt%)放入容积为500ml 的烧杯中1,再称取58.88铁镁铝三元水滑石(干基为68#%)和258拟薄水铝石(干基为68wt%)放入烧杯1中,并将它们搅拌均匀;称取27.7g硝酸镨(氧化物含量45wt%)放入容积为IOOrnl的烧杯2中,加入68g蒸馏水,搅拌使其完全溶解;然后在搅拌情况下,将烧杯2中溶液缓慢加入烧杯1中,加完后搅拌30分钟,静置20小时;将其在烘箱中120°C烘烤3小时,然后在马弗炉中580 °C下焙烧6小时。 [0033] Weigh the general formula of a perovskite LaAlo.AZntL1Mno.5〇3 52.0g (dry basis of 100wt%) into a beaker of 500ml volume of 1, then weighed 58.88 iron magnesium aluminum hydrotalcite ( # 68% dry basis) 258 pseudoboehmite and boehmite (68 wt% dry basis) put in a beaker, and uniformly stirred; Weigh 27.7g praseodymium nitrate (45 wt% oxide content) is placed in a volume 2 IOOrnl beaker, 68g of distilled water was added, stirred and completely dissolved; then, in the case of stirring, the beaker was slowly added in 2 1 beaker, was added after stirring for 30 minutes and allowed to stand for 20 hours; it in an oven bake 120 ° C for 3 hours and then calcined in a muffle furnace at 580 ° C 6 hours.

[0034] 取50g上述制得组合物放入烧杯3中,取5. OgPd含量为3000yg/g的水溶液和2.5gRh 含量4000yg/g的水溶液放入烧杯4中,在再烧杯4中加入17.5g蒸馏水搅拌均匀,搅拌情况下将烧杯4中溶液缓慢加入烧杯3中,溶液加完后继续搅拌30分钟,静置10小时,将上述浸渍物在烘箱中130 °C烘烤3小时,然后在马弗炉中600 °C下焙烧5小时,得到本发明的目的组合物1〇 [0034] Take 50g above-prepared composition was placed in a beaker 3, take the amount of aqueous solution 5. OgPd 3000yg / g and a content 2.5gRh 4000yg / g was placed in beaker 4, again in a beaker was added 17.5g 4 stir distilled water, stirring the beaker 4 in the case where the solution was slowly added to the beaker 3, complete addition stirring was continued for 30 minutes and allowed to stand for 10 hours, the above-described impregnation baked in an oven at 130 ° C for 3 hours, and then the horse calcined in muffle furnace for 5 hours 600 ° C, to obtain the composition object of the present invention 1〇

[0035] 实施例2 [0035] Example 2

[0036] 称取通式为LaAlo.5Zno.4Mno.iO3的钙钛矿42.0g(干基为100wt%)放入容积为500ml 的烧杯中1,再称取70.6g锌镁铝三元水滑石(干基为68wt%)和20g拟薄水铝石(干基为68wt% )放入烧杯1中,并将它们搅拌均匀;称取37.2g硝酸铈(氧化物含量45wt % )放入容积为100mL的烧杯2中,加入66g蒸馏水,搅拌使其完全溶解;然后在搅拌情况下,将烧杯2中溶液缓慢加入烧杯1中,加完后搅拌30分钟,静置24小时;将其在烘箱中140°C烘烤2小时,然后在马弗炉中620°C下焙烧7小时。 [0036] Weigh the formula LaAlo.5Zno.4Mno.iO3 perovskite 42.0 g (on dry basis of 100wt%) into a beaker of 500ml volume of 1, then weighed 70.6g magnesium aluminum hydrotalcite (dry basis 68wt%) and 20g quasi boehmite (on dry basis of 68wt%) into a beaker, and uniformly stirred; Weigh 37.2g of cerium nitrate (oxide content 45wt%) into the volume 100mL beaker 2, 66g of distilled water was added, stirred and completely dissolved; then, in the case of stirring, the beaker was slowly added in 2 1 beaker, was added after stirring for 30 minutes and allowed to stand for 24 hours; it in an oven bake 140 ° C for 2 hours and then calcined in a muffle furnace at 620 ° C 7 hours.

[0037] 取50g上述制得组合物放入烧杯3中,取10.(^?(1含量为300(^8/^的水溶液和1.25gRh含量4000yg/g的水溶液放入烧杯4中,在再烧杯4中加入12.5g蒸馏水搅拌均匀,搅拌情况下将烧杯4中溶液缓慢加入烧杯3中,溶液加完后继续搅拌30分钟,静置12小时,将上述浸渍物在烘箱中130 °C烘烤4小时,然后在马弗炉中640 °C下焙烧4小时,得到本发明的目的组合物2。 Aqueous [0037] Take 50g above-prepared composition was placed in a beaker 3, taken 10. (^? (1 content 300 (8 ^ / ^ and aqueous 1.25gRh content 4000yg / g was placed in beaker 4, the then the beaker was added 12.5g of distilled water stir 4, 4 with stirring in the beaker was slowly added to the beaker 3, complete addition stirring was continued for 30 minutes and allowed to stand for 12 hours, the above was immersed in a 130 ° C drying oven baked 4 hours and then calcined for 4 hours in a muffle furnace at 640 ° C, to afford the desired composition 2 of the present invention.

[0038] 实施例3 [0038] Example 3

[0039] 称取通式为LaAlo.5Zno.4Mno.iO3的钙钛矿35.0g(干基为100wt%)放入容积为500ml 的烧杯中1,再称取80.9g锰镁铝三元水滑石(干基为68wt%)和30g拟薄水铝石(干基为68wt% )放入烧杯1中,并将它们搅拌均匀;称取32.2g硝酸铈(氧化物含量45wt % )放入容积为100mL的烧杯2中,加入73g蒸馏水,搅拌使其完全溶解;然后在搅拌情况下,将烧杯2中溶液缓慢加入烧杯1中,加完后搅拌30分钟,静置23小时;将其在烘箱中120°C烘烤4小时,然后在马弗炉中650 °C下焙烧6小时。 [0039] Weigh the formula LaAlo.5Zno.4Mno.iO3 perovskite 35.0 g (on dry basis of 100wt%) into a beaker of 500ml volume of 1, then weighed 80.9g Mn Mg-Al hydrotalcite (dry basis 68wt%), and 30g of boehmite and pseudoboehmite (dry basis 68wt%) into a beaker, and uniformly stirred; Weigh 32.2g of cerium nitrate (oxide content 45wt%) into the volume 100mL beaker 2, 73g of distilled water was added, stirred and completely dissolved; then, in the case of stirring, the beaker was slowly added in 2 1 beaker, was added after stirring for 30 minutes and allowed to stand for 23 hours; it in an oven bake 120 ° C for 4 hours and then calcined in a muffle furnace at 650 ° C 6 hours.

[0040] 取50g上述制得组合物放入烧杯3中,取3.3gPd含量为3000yg/g的水溶液和2.5gRh 含量4000yg/g的水溶液放入烧杯4中,在再烧杯4中加入19.2g蒸馏水搅拌均匀,搅拌情况下将烧杯4中溶液缓慢加入烧杯3中,溶液加完后继续搅拌30分钟,静置8小时,将上述浸渍物在烘箱中120 °C烘烤5小时,然后在马弗炉中610 °C下焙烧6小时,得到本发明的目的组合物3〇 [0040] Take 50g above-prepared composition was placed in a beaker 3, an amount of an aqueous solution taken 3.3gPd 3000yg / g and a content 2.5gRh 4000yg / g was placed in beaker 4, 19.2g distilled water and then added to the beaker 4 stir the mixture was stirred 4 in the case where the beaker was slowly added in 3 beaker, stirred solution was added after a further 30 minutes, allowed to stand for 8 hours, the above-described impregnation baked in an oven at 120 ° C for 5 hours and then in a muffle calcined for 6 hours oven 610 ° C, to obtain the composition object of the present invention 3〇

[0041 ] 实施例4 [0041] Example 4

[0042] 称取通式为LaAlo.7Zn〇.^ntL1O3的钙钛矿65.0g(干基为100wt%)放入容积为500ml 的烧杯中1,再称取41.2g锌镁铝三元水滑石(干基为68wt% )和20g拟薄水铝石(干基为68wt%)放入烧杯1中,并将它们搅拌均匀;称取28.7g硝酸钕(氧化物含量45wt%)放入容积为IOOrnl的烧杯2中,加入63g蒸馏水,搅拌使其完全溶解;然后在搅拌情况下,将烧杯2中溶液缓慢加入烧杯1中,加完后搅拌30分钟,静置24小时;将其在烘箱中140°C烘烤2小时,然后在马弗炉中580 °C下焙烧6小时。 [0042] was weighed into LaAlo.7Zn〇 formula. ^ NtL1O3 perovskite 65.0 g of (dry basis of 100wt%) in a volume of 500ml beaker 1, and then weighed 41.2g magnesium aluminum hydrotalcite (dry basis 68wt%) and 20g quasi boehmite (on dry basis of 68wt%) into a beaker, and uniformly stirred; Weigh 28.7g of neodymium nitrate (oxide content of 45wt%) into the volume 2 IOOrnl beaker, 63g of distilled water was added, stirred and completely dissolved; then, in the case of stirring, the beaker was slowly added in 2 1 beaker, was added after stirring for 30 minutes and allowed to stand for 24 hours; it in an oven bake 140 ° C for 2 hours and then calcined in a muffle furnace at 580 ° C 6 hours.

[0043] 取50g上述制得组合物放入烧杯3中,取2.5gPd含量为3000yg/g的水溶液和5.6gRh 含量4000yg/g的水溶液放入烧杯4中,在再烧杯4中加入16.9g蒸馏水搅拌均匀,搅拌情况下将烧杯4中溶液缓慢加入烧杯3中,溶液加完后继续搅拌30分钟,静置11小时,将上述浸渍物在烘箱中120 °C烘烤6小时,然后在马弗炉中560 °C下焙烧6小时,得到本发明的目的组合物4〇 [0043] Take 50g above-prepared composition was placed in a beaker 3, an amount of an aqueous solution taken 2.5gPd 3000yg / g and a content 5.6gRh 4000yg / g was placed in beaker 4, 16.9g distilled water and then added to the beaker 4 stir the mixture was stirred 4 in the case where the beaker was slowly added in 3 beaker, stirred solution was added after a further 30 minutes, allowed to stand for 11 hours to impregnate the above-described baking in an oven at 120 ° C for 6 hours, and then in a muffle calcined for 6 hours oven 560 ° C, to obtain the composition object of the present invention 4〇

[0044] 实施例5 [0044] Example 5

[0045] 称取通式为LaAlo.sZno.SMntL1O3的钙钛矿15.0g(干基为lOOwt%)放入容积为500ml 的烧杯中1,再称取80.4锰镁铝三元水滑石(干基为68#%)和258拟薄水铝石(干基为68wt% )放入烧杯1中,并将它们搅拌均匀;称取30.7g硝酸铈(氧化物含量45wt % )放入容积为100mL的烧杯2中,加入62.5g蒸馏水,搅拌使其完全溶解;然后在搅拌情况下,将烧杯2中溶液缓慢加入烧杯1中,加完后搅拌30分钟,静置18小时;将其在烘箱中130°C烘烤3小时,然后在马弗炉中640 °C下焙烧5小时。 [0045] formula LaAlo.sZno.SMntL1O3 weighed 15.0 g of the perovskites (dry basis lOOwt%) into a beaker of 500ml volume of 1, then weighed 80.4 Mn Mg-Al hydrotalcite (dry basis # 68%) and 258 quasi boehmite (68 wt% dry basis) put in a beaker, and uniformly stirred; Weigh 30.7g of cerium nitrate (45 wt% oxide content) is placed in a volume of 100mL in beaker 2, 62.5g distilled water was added, stirred and completely dissolved; then, in the case of stirring, the beaker was slowly added in 2 1 beaker, was added after stirring for 30 minutes and allowed to stand for 18 hours; it in an oven 130 baking ° C for 3 hours and then calcined in a muffle furnace at 640 ° C 5 hours.

[0046] 取50g上述制得组合物放入烧杯3中,取1.7gPd含量为3000yg/g的水溶液和2.5gRh 含量4000yg/g的水溶液放入烧杯4中,在再烧杯4中加入20.8g蒸馏水搅拌均匀,搅拌情况下将烧杯4中溶液缓慢加入烧杯3中,溶液加完后继续搅拌30分钟,静置9小时,将上述浸渍物在烘箱中120 °C烘烤5小时,然后在马弗炉中550 °C下焙烧6小时,得到本发明的目的组合物5〇 [0046] Take 50g above-prepared composition was placed in a beaker 3, an amount of an aqueous solution taken 1.7gPd 3000yg / g and a content 2.5gRh 4000yg / g was placed in beaker 4, 4 in a beaker and then added 20.8g of distilled water stir the mixture was stirred 4 in the case where the beaker was slowly added in 3 beaker, stirred solution was added after a further 30 minutes, allowed to stand for 9 hours, the above was immersed in an oven at 120 ° C bake for 5 hours and then in a muffle calcined for 6 hours oven 550 ° C, to obtain the composition object of the present invention 5〇

[0047] 实施例6 [0047] Example 6

[0048] 称取通式为LaAltL3Zno.SMntL1O3的钙钛矿45.0g(干基为100wt%)放入容积为500ml 的烧杯中1,再称取32.2g锌镁铝三元水滑石(干基为68wt% )和23g拟薄水铝石(干基为68wt% )放入烧杯1中,并将它们搅拌均匀;称取25.3g硝酸镨(氧化物含量45wt% )放入容积为100mL的烧杯2中,加入48g蒸馏水,搅拌使其完全溶解;然后在搅拌情况下,将烧杯2中溶液缓慢加入烧杯1中,加完后搅拌30分钟,静置22小时;将其在烘箱中140°C烘烤3小时,然后在马弗炉中650 °C下焙烧4小时。 [0048] Weigh the general formula of a perovskite LaAltL3Zno.SMntL1O3 45.0 g (on dry basis of 100wt%) into a beaker of 500ml volume of 1, then weighed 32.2g magnesium aluminum hydrotalcite (dry basis 68wt%) and 23g quasi boehmite (on dry basis of 68wt%) into a beaker, and uniformly stirred; beaker Weigh 25.3g praseodymium nitrate (oxide content of 45wt%) into a volume of 100mL 2 in 48g of distilled water was added, stirred and completely dissolved; then, in the case of stirring, the beaker was slowly added in 2 1 beaker, was added after stirring for 30 minutes and allowed to stand for 22 hours; it is baked in an oven at 140 ° C in bake for 3 hours and then calcined in a muffle furnace at 650 ° C 4 hours.

[0049] 取50g上述制得组合物放入烧杯3中,取1.7gPd含量为3000yg/g的水溶液和0.6gRh 含量4000yg/g的水溶液放入烧杯4中,在再烧杯4中加入22.7g蒸馏水搅拌均匀,搅拌情况下将烧杯4中溶液缓慢加入烧杯3中,溶液加完后继续搅拌30分钟,静置10小时,将上述浸渍物在烘箱中120 °C烘烤6小时,然后在马弗炉中620 °C下焙烧5小时,得到本发明的目的组合物6〇 [0049] Take 50g above-prepared composition was placed in a beaker 3, an amount of an aqueous solution taken 1.7gPd 3000yg / g and a content 0.6gRh 4000yg / g was placed in beaker 4, 4 in a beaker and then added 22.7g of distilled water stir the mixture was stirred 4 in the case where the beaker was slowly added in 3 beaker, stirred solution was added after a further 30 minutes, allowed to stand for 10 hours to impregnate the above-described baking in an oven at 120 ° C for 6 hours, and then in a muffle oven baked for 5 hours at 620 ° C, to obtain the composition object of the present invention 6〇

[0050]实施例7-13 [0050] Example 7-13

[0051] 一种降低催化裂化再生烟气NOx排放组合物的性能测试如下: [0051] A performance test FCC regenerator flue gas to reduce NOx emissions composition is as follows:

Figure CN104645982BD00071

[0054] Xnq:组合物的NO脱除率,% ;CNQ:反应尾气中NO的含量,mg/m3; Cma,:反应前混合气中NO的含量,mg/m3。 [0054] Xnq: NO removal rate of the composition,%; CNQ: The content of NO in the reaction off-gas, mg / m3; Cma ,: content before the reaction gas mixture of NO, mg / m3. [0055] 组合物CO脱除性能: [0055] The composition of CO release properties:

[0052]在微型石英反应器上,模拟FCC反应条件,测试降低催化裂化再生烟气NOx排放组合物的脱NOx性能。 [0052] On a quartz micro-reactor to simulate FCC reaction conditions, the test FCC regenerator reduced NOx emissions of flue gas NOx removal performance of the composition. 烟气是由302、%、0)、^)和02按一定比例配成的混合气体。 Flue gas is 302%, 0), ^), and a mixed gas of 02 dubbed by a certain percentage. 其中30 2为140〇11^/1113,勵145〇11^/1113,0)4.0(¥)%,〇2为3.5(¥)%,其余为犯。 Wherein 302 is 140〇11 ^ / 1113, Li 145〇11 ^ / 1113,0) 4.0 (¥)%, 〇2 of 3.5 (¥)%, the remainder being made. 勵用英国产碰9106型烟气分析仪分析。 9106 Flue Gas Analyzer Reed touch with the British production. 称取I .Og降低催化裂化再生烟气NOx排放组合物含量为3.0%FCC催化剂样品, 装入Φ 8 X Imm的石英管反应器内,在氮气流下加热到700°C,然后停氮气,通入混合气体,气体流量为l〇〇ml/min,每30分钟取样分析一次,反应8小时,以8小时NO和CO脱除率的平均值作为组合物性能优劣的比较。 I .Og weighed decrease in the quartz tube reactor FCC regenerator flue gas NOx emissions content of the composition was 3.0% FCC catalyst sample was charged Φ 8 X Imm, and heated to 700 ° C under a stream of nitrogen gas, nitrogen gas and then stopped, through a gas mixture, gas flow rate l〇〇ml / min, a comparative sample analysis, the reaction for 8 hours to 8 hours average ratio of NO and CO removal performance advantages and disadvantages as a composition every 30 minutes.

[0053] 组合物的NO脱除率定义为: [0053] NO removal rate of the composition is defined as:

[0056] [0056]

Figure CN104645982BD00081

[0057] 式中:X为组合物CO脱除率(% ) ;&为反应后气体中CO的含量(v% ) ;C2为反应前混合气中CO的含量(V%)。 [0057] wherein: X is CO removal composition ratio (%); & CO content of (V%) in the reaction gas; C2 content in the gas mixture before the reaction of CO (V%).

[0058]表1为组合物性能测试过程中所用FCC平衡剂的性质。 [0058] Table 1 shows the properties of the composition in the nature of the test agent with the FCC equilibrium. 表2为本发明组合物的NO和CO脱除性能测试评价结果。 Table 2 composition of the present invention, CO and NO removal performance test results of the evaluation.

[0059] 表1FCC平衡剂性质 [0059] Properties of equilibrium catalyst Table 1FCC

Figure CN104645982BD00082

[0061 ]表2组合物NO和CO脱除性能性能测试评价结果 [0061] The composition of Table 2 NO and CO removal performance test results of the performance evaluation

Figure CN104645982BD00091

[0064] #注:对比剂为市售的Cu含量为2.2wt %的降低催化裂化再生烟气NOx助剂 [0064] # Notes: a commercially available contrast agent for the Cu content is 2.2wt% FCC regenerator flue gas NOx reduction additives

[0065] 以上所述的实施例仅用于说明本发明的技术思想及特点,其目的在于使本领域内的技术人员能够理解本发明的内容并据以实施,不能仅以本实施例来限定本发明的专利范围,即凡本发明所揭示的精神所作的同等变化或修饰,仍落在本发明的专利范围内。 Example [0065] The above-described technical idea is for illustration only and features of the invention, its object is to enable a person skilled in the art to understand the present invention and accordingly embodiment, not only the present embodiment is defined equivalent variations or modifications patentable scope of the invention, i.e., where the spirit of the disclosed invention is made present, still fall within the scope of the present invention.

Claims (6)

  1. 1. 一种用于降低催化裂化再生烟气NOx排放并具有CO助燃功能的组合物的制备方法, 其特征在于,包括以下步骤: (1) 按配比,将钙钛矿组分、三元水滑石组分和拟薄水铝石组分在反应釜中机械混合均匀; (2) 称取除镧之外的镧系元素的硝酸盐或氯化物放入反应釜中,加入蒸馏水,使溶液的体积能够进行等体积浸渍;在搅拌情况下,慢慢加入到步骤(1)的反应釜中,静置18-24小时; (3) 将步骤(2)所得浸渍物在烘箱中120-140°C烘烤2-4小时,然后在马弗炉中550-650 °C下焙烧4-6小时; (4) 用贵金属水溶液浸渍步骤(3)得到的组合物,静置8-12小时,将静置后浸渍物在烘箱中120-140°C烘烤2-4小时,然后在马弗炉中550-650°C下焙烧4-6小时,得到目的组合物; 上述原料以组合物重量计: (1) 含有以组合物重量计5%-65%通式为1^1211^112〇3的钙钛矿组分4 = 〇-1,2 = 〇- 0.4,y <l-(x+z); (2) 1. A method for preparing FCC regenerator flue gas NOx emissions and combustion with CO reduced functional composition, characterized in that it comprises the steps of: (1) proportioning the perovskite components, triple water talc component and a quasi boehmite mechanical components mixed in the reaction vessel; (2), said lanthanide nitrate or chloride is taken other than lanthanum into a reaction kettle, distilled water was added, the solution is volume can be incipient wetness impregnation; reaction kettle with stirring, was slowly added to step (1) was allowed to stand for 18-24 hours; (3) step (2) was obtained was immersed in an oven 120-140 ° C baked for 2-4 hours, and then calcined in a muffle furnace at 550-650 ° C 4-6 hours; (4) obtained in the step of impregnating an aqueous solution of noble metal (3) composition was allowed to stand 8-12 hours, after standing impregnate 120-140 ° C baked in an oven for 2-4 hours, 4-6 hours and then calcined in a muffle furnace at 550-650 ° C, to afford the desired composition; and the starting material to weight of the composition : (1) the composition contains from 5% to 65% by weight of the formula 1 ^ 1211 ^ 112〇3 component perovskite-square = 4 〇- 1,2 = 0.4, y <l- (x + z); (2) 含有以组合物重量计15 % -60 %的锌镁铝三元类水滑石、铁镁铝三元类水滑石、锰镁铝三元类水滑石和钴镁铝三元类水滑石中的一种或几种混合物; (3) 含有以组合物重量计5%-15%除镧之外的镧系元素氧化物; (4) 含有以组合物重量计50yg/g-1000yg/g贵金属钯(Pd)、铑(Rh)、钌(Ru)、铱(Ir)、锇(Os)中的两种组合; (5) 含有以组合物重量计5 %-25 %的拟薄水铝石。 By weight of the composition containing 15% -60% of a magnesium aluminum Hydrotalcite, Mg-Al Hydrotalcite iron, manganese and Mg-Al Hydrotalcite cobalt ternary Mg-Al hydrotalcite or a mixture of several kinds; (3) the composition contains from 5% to 15% by weight of lanthanide oxide other than lanthanum; (4) to weight of the composition containing 50yg / g-1000yg / g palladium noble metal ( Pd), a combination of two rhodium (Rh), ruthenium (Ru), iridium (Ir), osmium (Os) in; (5) the composition contains 5-25% by weight of pseudo-boehmite.
  2. 2. 根据权利要求1所述的用于降低催化裂化再生烟气NOx排放并具有C0助燃功能的组合物的制备方法,其特征在于,上述原料以组合物重量计: (1) 含有以组合物重量计10 %_6〇%通式为LaAlxZnyMnz〇3的钙钛矿组分; (2) 含有以组合物重量计15-55 %的锌镁铝三元类水滑石和锰镁铝三元类水滑石; (3) 含有以组合物重量计7 % -12 %铈、镨、钕的混合物的氧化物; (4) 含有以组合物重量计100yg/g-700yg/g钯(Pd)+铑(Rh)或钯(Pd)+钌(Ru),钯和铑的比例为10:1-0.5:5或钯和钌的比例为10:1-0.5:5; (5) 含有以组合物重量计10 % -20 %的拟薄水铝石。 The method for preparing FCC regenerator flue gas NOx emissions and combustion C0 has reduced function of the composition of claim 1, wherein said starting material to weight of the composition: (1) composition comprising _6〇% 10% by weight of the formula of the perovskite component LaAlxZnyMnz〇3; (2) containing magnesium aluminum and manganese hydrotalcite Mg-Al ternary aqueous composition of 15-55% by weight talc; (3) to weight of the composition comprising a mixture of oxides of cerium, praseodymium, neodymium, 7% -12%; (4) the composition contains by weight 100yg / g-700yg / g of palladium (Pd) + rhodium ( Rh) or palladium (Pd) + ruthenium (Ru), palladium and rhodium ratio is from 10: 1 to 0.5: the ratio of ruthenium or palladium and 10 to 5: 1 to 0.5: 5; (5) to weight of the composition comprising 10% -20% pseudo-boehmite.
  3. 3. 根据权利要求2所述的用于降低催化裂化再生烟气NOx排放并具有C0助燃功能的组合物的制备方法,其特征在于,所述钯和铑的比例为7:1 -1:4或钯和钌的比例为7:1 -1:4。 The method for preparing FCC regenerator flue gas NOx emissions and combustion C0 has reduced function of the composition of claim 2, wherein said palladium and rhodium ratio of 7: 1-1: 4 and ruthenium or palladium ratio is 7: 1-1: 4.
  4. 4. 如权利要求1-3任一项所述的方法制备的用于降低催化裂化再生烟气NOx排放并具有C0助燃功能的组合物。 4. A method according to any one of claims 1-3 in the preparation of FCC regenerator flue gas for reducing NOx emissions and combustion C0 having a functional composition.
  5. 5. 根据权利要求4所述的用于降低催化裂化再生烟气NOx排放并具有C0助燃功能的组合物,其特征在于,所述组合物的比表面积不小于50m 2/g。 According to claim FCC regenerator flue gas for reducing NOx emissions and combustion C0 having a functional composition of claim 4, wherein a specific surface area of ​​the composition is not less than 50m 2 / g.
  6. 6. 根据权利要求5所述的用于降低催化裂化再生烟气NOx排放并具有CO助燃功能的组合物,其特征在于,所述组合物的比表面积为70m 2/g-200m2/g。 According to claim 5 for reducing NOx emissions and FCC regenerator flue gas having a CO combustion functional composition, wherein a specific surface area of ​​the composition is 70m 2 / g-200m2 / g.
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