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    • 51. 发明授权
    • Hydrotreatment-isomerization without hydrogen recycle
    • 无氢循环的加氢处理异构化
    • US5026950A
    • 1991-06-25
    • US530142
    • 1990-05-29
    • Robert J. SchmidtRobert S. Haizmann
    • Robert J. SchmidtRobert S. Haizmann
    • C07C5/27C10G49/00C10G65/04
    • C10G65/043C07C5/2724C10G49/007
    • A combined process for hydrotreating and isomerizing a C.sub.4 -C.sub.7 feedstock is simplified and made more efficient by the use of a common hydrogen source and low hydrogen to hydrocarbon ratio in both the hydrotreating and isomerization steps of the invention. The method supplies hydrogen to a combined hydrotreatment and isomerization process for the isomerization of a feed stream comprising C.sub.4 -C.sub.7 hydrocarbons. The hydrocarbon feed stream contains sulfur and oxygen contaminants and is combined with a hydrogen-containing stream in an amount that produces a maximum hydrogen to hydrocarbon ratio of 0.9 stdm.sup.3 m.sup.3 (50 SCFB). The hydrotreater feed is contacted in a hydrotreater reactor with a catalyst comprising a Group VIB metal and a Group VIII metal on an alumina support. Effluent from the hydrotreater passes to a first separator that separates the effluent into a first gas stream comprising hydrogen, hydrogen sulfide and water and a treated stream comprising hydrocarbons having from 4-7 carbon atoms. The first gas stream is rejected from the process. The treated stream is mixed with a second hydrogen-containing stream in a proportion that produces a hydrogen to hydrocarbon ratio of from 6.3 to 18 stdm.sup.3 m.sup.3 (350 to 1000 SCFB) to form an isomerization zone feed. The isomerization feed is contacted in an isomerization reaction zone with an isomerization catalyst comprising a crystalline alumino-silicate and a Group VIII metal at isomerization conditions. The effluent from the reaction zone enters a stabilizer where it is separated into a product stream of C.sub.4 -C.sub.7 hydrocarbons and a second gas stream which is removed from the process. The common hydrogen supply source and the low hydrogen to hydrocarbon ratios permit operation of the process without hydrogen recycle facilities between the hydrotreatment and isomerization steps and downstream of the isomerization reactor.
    • 通过在本发明的加氢处理和异构化步骤中使用普通的氢源和低的氢气与烃的比例,简化了加氢处理和异构化C4-C7原料的组合方法。 该方法向组合的加氢处理和异构化方法提供氢气,用于使包含C4-C7烃的进料流异构化。 烃进料流含有硫和氧污染物,并且与含氢物流合并,其产生最大氢烃比为0.9stdm3m3(50SCFB)。 加氢处理器进料在加氢处理器反应器中与氧化铝载体上含有VIB族金属和VIII族金属的催化剂接触。 来自加氢处理器的流出物流入第一分离器,其将流出物分离成包含氢气,硫化氢和水的第一气流以及包含具有4-7个碳原子的烃的处理流。 第一个气流从该过程中被拒绝。 将经处理的流与第二含氢流以与6.3至18stdm3m3(350至1000SCFB)的氢烃比例形成异构化区进料的比例混合。 异构化进料在异构化反应区与异构化催化剂接触,异构化催化剂在异构化条件下包含结晶铝硅酸盐和Ⅷ族金属。 来自反应区的流出物进入稳定剂,在其中将其分离成C4-C7烃的产物流和从该方法中除去的第二气流。 普通的氢气供应源和低的氢气与烃的比例允许在加氢处理和异构化步骤之间没有氢循环设施的操作,而异构化反应器的下游。
    • 59. 发明授权
    • Production of reformulated gasoline
    • 生产重整汽油
    • US5135639A
    • 1992-08-04
    • US528403
    • 1990-05-24
    • Robert J. SchmidtSrikantiah Raghuram
    • Robert J. SchmidtSrikantiah Raghuram
    • C10G59/02C10L1/06
    • C10L1/06C10G59/02
    • A process combination is disclosed to reduce the aromatics content of a key component of gasoline blends. Paraffins contained in catalytic reformates are conserved and upgraded by separation and isomerization, reducing the reforming severity required to achieve a given product octane with concomitant reduction in paraffin aromatization and cracking. Light reformate may be separated and isomerized, and heavier paraffins are separated from the reformate by solvent extraction or adsorption and isomerized. A gasoline component having a reduced aromatics content relative to reformate of the same octane number is blended from the net products of the separation and isomerization steps.
    • 公开了一种方法组合以降低汽油混合物的关键组分的芳族化合物含量。 包含在催化重整产物中的石蜡通过分离和异构化被保存和升级,降低了获得给定产物辛烷值同时降低链烷烃芳构化和开裂所需的重整严重性。 轻质重整物可以分离和异构化,并且较重的链烷烃通过溶剂萃取或吸附与重整产物分离并异构化。 从分离和异构化步骤的净产物中混合相对于相同辛烷值的重整产物具有降低的芳族化合物含量的汽油组分。