公开(公告)号：US3728527A

公开(公告)日：1973-04-17

申请号：US3728527D

申请日：1972-02-24

Applicant: TEXACO INC

Inventor： HOPKINS W ,  SWEENEY D ,  PITMAN H

IPC: C07C2/56 ,  C07C1/00 ,  C07C2/62 ,  C07C9/16 ,  C07C67/00 ,  G01N33/22 ,  G05B13/00 ,  G05B13/02 ,  G06F15/46 ,  C07C3/52

CPC classification number: C07C2/62 ,  Y10S208/01 ,  Y10S585/952

Abstract: A control system controls the acid strength of reaction acid in an alkylation unit reacting an olefin with an isoparaffin in the presence of the reaction acid to eventually produce an alkylate. The system senses the actual reaction acid strength, the discharge acid flow rate, the flow rate of discharge acid leaving the alkylation unit, the bottom products flow rate and the alkylate content of the bottoms product from a debutanizer tower and the propylene and butylene content of the olefin stream entering the alkylation unit. Using equations hereinafter disclosed, along with economic values associated with the acid and the alkylate, the control system periodically determines the optimum reaction acid strength. When the change in the reaction acid strength necessary to achieve the optimum reaction acid strength is less than a predetermined change, the necessary change is implemented. When the necessary change is greater than the predetermined change, the reaction acid strength is changed by an increment equal to the predetermined change. Where the reaction aicd strength is decreased to achieve an optimum reaction acid strength, a minimum limit is imposed on the reaction acid strength to prevent undesirable side reactions, such as olefin polymerization, from occurring.

Abstract translation: 控制系统控制在反应酸存在下使烯烃与异链烷烃反应的烷基化单元中的反应酸的酸强度，以最终产生烷基化物。 该系统检测实际反应酸强度，排出酸流量，离开烷基化单元的排出酸流量，底部产物流速和脱丁烷塔塔底产物的烷基化含量，丙烯和丁烯含量 进入烷基化单元的烯烃流。 使用以下公开的方程式，连同与酸和烷基化物相关的经济值，控制系统周期性地确定最佳反应酸强度。 当实现最佳反应酸强度所需的反应酸强度的变化小于预定的变化时，实施必要的改变。 当必要的变化大于预定变化时，反应酸强度变化等于预定变化的增量。 当反应浓度降低以获得最佳反应酸强度时，对反应酸强度施加最小限度，以防止发生不期望的副反应，例如烯烃聚合。