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    • 29. 发明授权
    • Process for paraffin isomerization with liquid phase adsorptive product
separation
    • 用液相吸附产物分离石蜡异构化方法
    • US5026951A
    • 1991-06-25
    • US462262
    • 1990-01-09
    • Robert J. SchmidtLynn H. RiceSrikantiah Raghuram
    • Robert J. SchmidtLynn H. RiceSrikantiah Raghuram
    • C07C5/27C07C9/00
    • C07C9/00C07C5/2791
    • A combination isomerization and liquid phase adsorptive separation process is given increased efficiency and cost effectiveness by the elimination of a column for the separation of desorbent material from selectively retained components. By decreasing the ratio of normal paraffin desorbent to the selective pore volume circulation rate, the extract column can be eliminated without providing other means for the rejection or recovery of desorbent material. This reduction in the ratio of normal paraffin desorbent to selective pore volume circulation rate has been found not to decrease the recovery from the adsorption section. The elimination of the column provides a substantial decrease in the cost of the equipment to operate a combination isomerization zone and liquid phase adsorption section. In an alternate arrangement, the extract column is replaced with a deisohexanizer column. The deisohexanizer column can be used to produce a C.sub.5 -C.sub.6 product stream having research octane numbers of 93 or greater.
    • 组合异构化和液相吸附分离方法通过消除用于将解吸剂材料与选择性保留的组分分离的柱来提高效率和成本效益。 通过降低正常石蜡脱附剂与选择孔体积循环速率的比例,可以消除萃取柱而不提供用于排除或回收解吸材料的其它方法。 发现正常石蜡脱附剂与选择性孔体积循环速率之比的这种降低不会降低吸附段的回收率。 柱的消除大大降低了操作组合异构化区和液相吸附段的设备的成本。 在替代布置中,萃取柱用脱乙酸酯柱代替。 脱甲基塔可用于生产具有研究辛烷值为93或更高的C5-C6产物流。