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首页> 外文期刊>Fuel >Hydrocracking Brazilian Marlim vacuum residue with natural limonite. Part 1: catalytic activity of natural limonite
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Hydrocracking Brazilian Marlim vacuum residue with natural limonite. Part 1: catalytic activity of natural limonite

机译：用天然褐铁矿对巴西Marlim减压渣油进行加氢裂化。第1部分：天然褐铁矿的催化活性

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摘要

An experimental study examined the catalytic effects of natural Australian (AL) and Brazilian (BL) limonites used in hydrocracking Brazilian Marlim vacuum residue (ML-VR). The catalytic behavior of the limonites was compared with a conventional NiO-MoO_3-Al_2O_3 (NiMo) catalyst. Diphenylmethane (DPM) and 1-methylnaphthalene (1-MN) were used as standards. The order in which coke and gas formation were suppressed during hydrocracking of ML-VR was NiMo > BL > AL, which is the same order as for the hydrogenation activity observed with the standard compounds. By contrast, the limonite catalysts exhibited relatively higher conversions and distillate yields in ML-VR hydrocracking than did the NiMo catalyst with the order of conversion and distillate yield (yield of the fraction with boiling point of 540 deg C) being AL>BL> NiMo, which is the same order obtained for catalytic cracking of the two standards. Coke formation was effectively suppressed at high hydrogen pressures. The limonite catalysts showed lower activities for nitrogen and sulfur removal than did NiMo, but both proved to have a larger activity for nickel removal.
机译：一项实验研究检查了天然澳大利亚（AL）和巴西（BL）褐铁矿对加氢裂化巴西Marlim真空渣油（ML-VR）的催化作用。将褐铁矿的催化行为与常规的NiO-MoO_3-Al_2O_3（NiMo）催化剂进行了比较。以二苯甲烷（DPM）和1-甲基萘（1-MN）为标准。在ML-VR的加氢裂化过程中，抑制焦炭和气体形成的顺序为NiMo> BL> AL，与用标准化合物观察到的氢化活性相同。相比之下，褐铁矿催化剂在ML-VR加氢裂化中的转化率和馏出物产率比NiMo催化剂高，其转化率和馏出物产率（沸点为540℃的馏分的产率）为AL> BL> NiMo。 ，这与两个标准的催化裂化获得的顺序相同。在高氢气压力下有效抑制了焦炭的形成。褐铁矿催化剂显示出比NiMo更低的脱氮和脱硫活性，但事实证明两者均具有更大的脱镍活性。

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