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    • 10. 发明授权
    • Dehydrocyclization process
    • 脱氢环化过程
    • US4650565A
    • 1987-03-17
    • US426376
    • 1982-09-29
    • Robert L. JacobsonLawrence W. Jossens
    • Robert L. JacobsonLawrence W. Jossens
    • B01J29/068C10G35/095C10G35/06C07C2/52
    • B01J29/068C10G35/095
    • A process is disclosed wherein a naphtha feed is contacted in a reaction vessel with a dehydrocyclization catalyst comprising a large-pore zeolite containing at least one Group VIII metal to produce an aromatics product and a gaseous stream, the aromatics product is separated from the gaseous stream and is passed through a molecular sieve which adsorbs paraffins present in the aromatics product, then the gaseous stream is used to strip the paraffins from the molecular sieve, and the gaseous stream and the paraffins are recycled to the reaction vessel. Preferably, the dehydrocyclization catalyst comprises a type L zeolite containing from 8% to 15% by weight barium and from 0.6% to 1.0% by weight platinum, wherein at least 80% of the crystals of the type L zeolite are larger than 1000 Angstroms, and an inorganic binder selected from the group consisting of silica, alumina, and aluminosilicates.
    • 公开了一种方法,其中使石脑油进料在反应容器中与脱氢环化催化剂接触,所述脱氢环化催化剂包含含有至少一种VIII族金属的大孔沸石以产生芳族化合物产物和气态物流,所述芳烃产物与气流 并通过吸附存在于芳族化合物产物中的链烷烃的分子筛,然后使用气流从分子筛中剥离链烷烃,并将气态物流和链烷烃再循环到反应容器中。 优选地,脱氢环化催化剂包括含有8重量%至15重量%的钡和0.6重量%至1.0重量%的铂的L型沸石,其中至少80%的L型沸石的晶体大于1000埃, 和选自二氧化硅,氧化铝和铝硅酸盐的无机粘合剂。