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    • 13. 发明公开
    • METHOD FOR PRODUCING SINGLE-RING AROMATIC HYDROCARBONS
    • 生产单环芳香烃的方法
    • EP2690159A1
    • 2014-01-29
    • EP12762799.0
    • 2012-03-23
    • JX Nippon Oil & Energy CorporationChiyoda Corporation
    • YANAGAWA, ShinichiroKOBAYASHI, MasahideIDA, RyojiYASUI, SusumuSUGI, YoshishigeFUKUI, AtsushiNAGUMO, Atsuro
    • C10G69/04C10G11/05C10G11/10C10G11/18C10G45/44C07B61/00C07C4/18C07C5/13C07C15/04C07C15/06C07C15/08
    • C07C4/06C10G69/04C10G69/10C10G2300/4081C10G2400/30Y02P20/582
    • A method for producing monocyclic aromatic hydrocarbons includes a cracking/reforming reaction step of introducing the feedstock oil into a cracking/reforming reactor, bringing the feedstock oil into contact with the catalyst, and causing the feedstock oil to react, thereby obtaining a product, a purification/recovery step of purifying and recovering the monocyclic aromatic hydrocarbons separated from the product produced in the cracking/reforming reaction step, a hydrogenation reaction step of hydrogenating a heavy fraction separated from the product produced in the cracking/reforming reaction step, and a recycling step of returning a hydrogenation reactant of the heavy fraction obtained in the hydrogenation reaction step to the cracking/reforming reaction step. In the recycling step, the hydrogenation reactant of the heavy fraction is introduced at a location different from an introduction location of the feedstock oil into the cracking/reforming reactor so that a time during which the hydrogenation reactant of the heavy fraction is in contact with the catalyst for monocyclic aromatic hydrocarbon production in the cracking/reforming reactor becomes shorter than a time during which the feedstock oil is in contact with the catalyst for monocyclic aromatic hydrocarbon production in the cracking/reforming reactor.
    • 单环芳香族烃的制造方法包括将原料油导入裂化重整反应器,使原料油与催化剂接触并使原料油反应而得到产物的裂化重整反应工序, 精制回收从在裂化重整反应工序中生成的产物中分离出的单环芳香族烃的精制回收工序,将从在裂化重整反应工序中生成的产物中分离出的重质馏分氢化的氢化反应工序, 将氢化反应工序中得到的重质馏分的氢化反应物返回到裂化重整反应工序的工序。 在再循环步骤中,将重质馏分的氢化反应物在不同于原料油的引入位置的位置处引入裂化/重整反应器中,使得重质馏分的氢化反应物与 裂化重整反应器中的单环芳香族烃制造用催化剂比原料油与裂解改性反应器内的单环芳香族烃制造用催化剂接触的时间短。