The Entity-Relationship Model: Towards a unified view of Data
The Entity-Relationship Model: Towards a unified view of Data
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发表时间：
1976
影响因子：
1.8
通讯作者：
Peter P. Chen
中科院分区：
文献类型：
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作者：
Peter P. Chen
本发明提供了一种改进的催化反应器的操作方法，一种用于连续重整沸点在汽油范围内的烃原料以产生高辛烷值流出物流的低压方法，在该方法中，烃原料和氢气在重整区中与含有催化有效量的铂族金属的重整催化剂在重整条件下连续接触，所述重整条件包括25至250 psig。该改进的操作方法包括向重整区中连续加入耐火轻质烃，其量足以使进入重整区的耐火轻质烃与氢气的摩尔比为约0.4 ∶ 1至约10 ∶ 1。此外，耐火轻质烃的添加在工艺启动时开始，并在整个重整运行期间持续。与这种改进的操作方法有关的主要优点是提高了重整催化剂的稳定性，特别是提高了在辛烷值下的温度稳定性。
An improved method of operation is provided for a catalytic, low pressure process for continuously reforming a hydrocarbon charge stock boiling in the gasoline range in order to produce a high octane effluent stream in which process the hydrocarbon charge stock and hydrogen are continuously contacted in a reforming zone with a reforming catalyst containing a catalytically effective amount of a platinum group metal at reforming conditions including a pressure of 25 to 250 psig. The improved method of operation involves continuously adding a refractory light hydrocarbon to the reforming zone in an amount sufficient to result in a mole ratio of refractory light hydrocarbon to hydrogen entering the reforming zone of about 0.4:1 to about 10:1. Moreover, the refractory light hydrocarbon addition is commenced at start-up of the process and continued throughout the duration of the reforming run. The principal advantage associated with this improved method of operation is increased stability of the reforming catalyst and particularly, increased temperature stability at octane.