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    • 73. 发明授权
    • Heavy feed upgrading and use thereof in cat cracking
    • 重型饲料升级及其在猫裂解中的应用
    • US5840178A
    • 1998-11-24
    • US666168
    • 1996-06-19
    • Jean C. HuangBelinda G. LambethPatrick H. TerryDaniel P. Leta
    • Jean C. HuangBelinda G. LambethPatrick H. TerryDaniel P. Leta
    • C10G11/18C10G29/16C10G75/04C10G17/00C10G29/04
    • C10G11/18C10G29/16C10G75/04
    • A heavy feed, such as a resid which contains coke precursors and metals, is upgraded by dissolving a feed soluble metal alkoxide in the feed which is heated to a temperature sufficient to decompose the alkoxide, but below 450.degree. F. The alkoxide decomposition precipitates at least a portion of the coke precursors and metals out of the feed as a separate phase, thereby effectively removing them to form an upgraded feed. The upgraded feed, with or without the precipitate present, is then sent to a cat cracker or to other upgrading. When fed into a cat cracker, such as a FCC, the upgraded feed is converted to lower boiling liquids with less deactivation of the cracking catalyst than would occur if the metals and coke precursors remained in the feed, even with the precipitate present in the feed. In the cat cracker, the precipate which contains the alkoxide metal and coke precursors and metals from the feed, is converted into coke particles having a particle size smaller than the catalyst particles. This enables the coke particles to be separated from the spent catalyst particles via cyclone separation, so that the coke particles are not sent to the catalyst regenerator.
    • 通过将进料可溶性金属醇盐溶解在进料中,将其加热至足以分解醇盐但低于450°F的温度,将重质进料(如含有焦炭前体和金属的渣油)升级。醇盐分解在 至少一部分焦炭前体和金属作为分离相进入进料,从而有效地除去它们以形成升级的进料。 有或没有沉淀存在的升级饲料然后被送到猫裂解器或其他升级装置。 当进料到诸如FCC的猫裂解器中时,如果金属和焦炭前体保留在进料中,即使在进料中存在沉淀物,升级的进料转化为较低沸点的液体,其裂化催化剂失活较少 。 在猫裂解器中,含有来自进料的醇盐金属和焦炭前体和金属的沉淀物被转化成粒度小于催化剂颗粒的焦炭颗粒。 这使得焦炭颗粒通过旋风分离器与废催化剂颗粒分离,使得焦炭颗粒不被送到催化剂再生器。