Active zeolite catalysts of improved stability for producing gasoline
from methanol
    14.
    发明授权
    Active zeolite catalysts of improved stability for producing gasoline from methanol 失效
    活性沸石催化剂具有改善从甲醇生产汽油的稳定性

    公开(公告)号:US4663492A

    公开(公告)日:1987-05-05

    申请号:US872359

    申请日:1986-06-09

    摘要: A feedstock of low molecular weight oxygenates such as methanol and/or dimethylether is contacted with a mildly presteamed or hydro-thermally treated zeolite catalyst in a reaction zone to produce liquid hydrocarbons in the gasoline boiling range. The pretreated zeolite catalyst has an .alpha.-value (acid cracking activity) substantially the same as the .alpha.-value of fresh unsteamed catalyst and shows increased stability and resistance to aging under oxygenate conversion conditions of elevated temperature and pressure.

    摘要翻译: 在反应区中将低分子量含氧化合物如甲醇和/或二甲醚的原料与轻度预蒸馏或热热处理的沸石催化剂接触以产生汽油沸程范围内的液体烃。 预处理的沸石催化剂具有基本上与新鲜未蒸汽催化剂的α值相同的α-值(酸裂解活性),并且在升高的温度和压力的含氧化合物转化条件下显示增加的稳定性和耐老化性。

    Cracking catalyst
    20.
    发明授权
    Cracking catalyst 失效
    开裂催化剂

    公开(公告)号:US4235754A

    公开(公告)日:1980-11-25

    申请号:US66215

    申请日:1979-08-10

    申请人: Arthur W. Chester

    发明人: Arthur W. Chester

    摘要: A metal combustion promoter is introduced to the circulating inventory of catalyst in a catalytic cracking unit as a mixture of particles rich in metal with particles free of metal such that the net concentration of metal in the mixture is about 1 to 10 ppm. According to a preferred embodiment the particles rich in metal contain about 50 ppm of platinum, iridium, osmium, palladium, rhodium, ruthenium or rhenium. When such mixtures are supplied to the circulating inventory, it is found that specific activity of the metal is enhanced in the sense that activity of the mixture for oxidation of carbon monoxide is higher than that of catalyst in which an equal amount of metal is evenly distributed among all the particles.

    摘要翻译: 在催化裂化装置中将金属助燃剂引入催化裂化装置的循环库存中,作为富含金属的颗粒与不含金属的颗粒的混合物,使得混合物中金属的净浓度为约1至10ppm。 根据优选实施方案,富含金属的颗粒含有约50ppm的铂,铱,锇,钯,铑,钌或铼。 当将这种混合物供应到循环库存中时,发现在一氧化碳氧化的混合物的活性高于其中等量的金属均匀分布的催化剂的活性的情况下,金属的比活性增强 在所有颗粒中。