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发明授权
CN101284242B 高负荷高收率苯气相氧化制顺丁烯二酸酐的催化剂 失效 - 权利终止 转让

高负荷高收率苯气相氧化制顺丁烯二酸酐的催化剂
摘要：
本发明涉及高负荷高收率苯气相氧化制顺丁烯二酸酐的催化剂。在固定床管式反应器中沿反应混合气进口方向依次由A、B两段不同性能的催化剂所组成；A段为总床高的40～60％，B段为总床高的60～40％。A段催化剂活性相的构成为：V2O5∶MoO3∶P2O5∶Na2O∶NiO∶Re2O3＝1∶(0.4～0.9)∶(0.01～0.08)∶(0.005～0.100)∶(0.005～0.500)∶(0.0001～0.0010)，其中Re为Nd、Pm、Sm、Eu、Gd、Tb、Dy、Ho、Er、Tm、Yb或Lu诸稀土元素中的任何两种。所述的B段催化剂活性相的构成为：Re2O3的比例为A段的2～3倍，P2O5的比例为(0.005～0.040)mol，其余氧化物的比例和A段一样。本发明催化剂可以使顺酐生产装置在不增加任何投入的情况下增加25％左右的生产能力，并且显著降低苯耗和能耗。
摘要（英）：

The invention relates to a catalyst for manufacturing maleic anhydride through the high-load and high-yield benzene gas-phase oxidation. A fixed-bed tubular reactor sequentially comprises an A section and a B section which are composed of catalysts with different performances along the inlet direction of reaction mixture gas; the A section is 40 to 60 percent of the total bed height, and the B section is 60 to 40 percent of the total bed height. The catalyst in the A section has the active phase composition that the ratio of V2O5:MoO3:P2O5:Na2O:NiO:Re2O3 equals to 1:(0.4 to 0.9):(0.01 to 0.08):(0.05 to 0.100):(0.005 to 0.500):(0.0001 to 0.0010), wherein, Re is any two of following rare earth elements that are Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu. The catalyst in the B section has the active phase composition that the proportion of the Re2O3 is 2 to 3 times of that of the Re2O3 in the A section, the proportion of the P2O5 is (0.005 to 0.040)mol, and the proportions of otheroxides are the same with that in the A section. The catalyst can lead maleic anhydride production equipment to increase about 25 percent production capacity without increasing any investment, and thebenzene consumption and the energy consumption can be obviously reduced.

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