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    • 81. 发明公开
    • CARBON MONOXIDE HYDROGENATION
    • 一氧化碳加氢
    • EP1313685A1
    • 2003-05-28
    • EP01957406.0
    • 2001-08-03
    • Exxonmobil Research and Engineering Company
    • KOVEAL, Russell, JohnDAAGE, Michel, A.
    • C07C1/04B01J23/75
    • C10G2/33B01J25/00B01J25/04B01J38/60C07C1/045C07C1/049C07C2523/75C10G2/342Y02P20/584
    • A method is disclosed for enhancing the activity of a particulate Dispersed Active Metal (DAM) catalyst during operation of a reactor wherein the hydrogenation of carbon monoxide to produce a mixture of hydrocarbons is being carried out comprising withdrawing a mixture of hydrocarbons and a portion of the DAM catalyst from the reactor, reducing the hydrocarbon content thereof with hydrogen at a temperature above the temperature of the reactor, oxidizing a slurry of the catalyst particles in a suitable fluid at low temperature to form an oxidized precursor, reducing the precursor at elevated temperature to reform the catalyst and returning it to the reactor. The catalyst may be passivated before returning it to the reactor. The process is carried out until it is evident that the operation of the reactor will no longer be economical due to a decrease in catalyst performance or accumulation of fines at which point the catalyst is preferably renewed during operation of the reactor by a process comprising withdrawing a mixture ofhydrocarbon content thereof, heating the mixture above the melting temperature of at least one of the metals to form a melt, removing any slag that forms on the melt, cooling the melt to form a solid, reducing the particle size thereof to form a renewed particulate DAM catalyst, which is then returned to the reactor.
    • 公开了一种在反应器操作过程中增强颗粒状分散活性金属(DAM)催化剂活性的方法,其中一氧化碳加氢生成烃混合物包括将烃混合物和一部分 来自反应器的DAM催化剂,在高于反应器温度的温度下用氢气还原其烃含量,在低温下在合适的流体中氧化催化剂颗粒的浆料以形成氧化的前体,在升高的温度下将前体还原至 重整催化剂并将其返回反应器。 催化剂在返回到反应器之前可以被钝化。 进行该方法直至明显由于催化剂性能的降低或细粉的积累而使反应器的操作不再经济,此时催化剂优选在反应器操作期间通过包括以下步骤的方法更新: 将其混合物加热,将混合物加热到至少一种金属的熔化温度以上以形成熔体,除去在熔体上形成的任何熔渣,冷却熔体以形成固体,减小其粒度以形成更新 颗粒状DAM催化剂,然后将其返回反应器。