公开(公告)号：US3537996A

公开(公告)日：1970-11-03

申请号：US3537996D

申请日：1967-12-12

Applicant: TEXACO INC

Inventor： HOLST EDWARD H ,  EDWARDS ROBERT S ,  MAY JOHN E

IPC: C10M159/24 ,  C10M1/40

CPC classification number: C10M159/24 ,  C10M2201/062 ,  C10M2219/046 ,  C10N2210/02

公开(公告)号：US3864346A

公开(公告)日：1975-02-04

申请号：US28209272

申请日：1972-08-21

Applicant: TEXACO INC

Inventor： CHILD EDWARD T ,  MAY JOHN E ,  STEPHANEK WILLIAM D

IPC: B01J19/00 ,  C07C2/62 ,  C07C3/14 ,  G01N31/08 ,  G06G7/58

CPC classification number: B01J19/0006 ,  C07C2/62 ,  Y10T436/12

Abstract: The strength of acid in an alkylation unit is controlled by a system using a signal corresponding to the anticipated demand on the acid by the reaction of olefin and isoparaffin in the presence of the acid. The reaction weakens the acid so that it is necessary to replace some of the weakened acid with fresh acid to maintain a desired acid strength. The control system includes apparatus sampling the olefin and isoparaffin entering the alkylation unit which provides a signal corresponding to the percent volume of acid degrading constituents formed during alkylation. A water analyzer samples the olefin and isoparaffin and provides a signal corresponding to their water content. Signals corresponding to sensed flow rates of fresh and discharged acid entering and leaving, respectively, the alkylation unit and of the olefin and isosparaffin are provided by sensors. A control circuit using analog computers develop the control signal in accordance with the signals from the sensors, the volume signal and the signal from the analyzer and equations hereinafter disclosed. The control signal ils applied to a flow recorder controller which controls the flow rate of the fresh acid entering the alkylation unit so as to maintain the desired acid strength.

Abstract translation: 烷基化单元中的酸的强度由在酸存在下通过烯烃和异链烷烃的反应使用对应于酸的预期需求的信号的系统来控制。 反应会使酸变弱，因此需要用新鲜的酸代替一些弱酸，以保持所需的酸强度。 控制系统包括对进入烷基化单元的烯烃和异构烷烃进行采样，其提供对应于在烷基化期间形成的酸降解成分的百分比体积的信号。 水分析仪对烯烃和异链烷烃进行采样，并提供对应于其含水量的信号。 传感器提供了对应于新鲜和排出的酸分别进入和离开烷基化单元和烯烃和异链烷烃的流量的信号。 使用模拟计算机的控制电路根据来自传感器的信号，体积信号和来自分析仪的信号和下面公开的方程式来开发控制信号。 控制信号ils应用于流量记录器控制器，其控制进入烷基化单元的新鲜酸的流速以保持所需的酸强度。