公开(公告)号：US3748894A

公开(公告)日：1973-07-31

申请号：US3748894D

申请日：1972-06-15

Applicant: TEXACO INC

Inventor： WHITE W ,  LYNCH C

IPC: G01N25/52 ,  G01N33/28

CPC classification number: G01N33/2888

Abstract: Apparatus provides for an on-line determination of the flash point of lube oil fractions. The hydrocarbon is continuously sampled by a viscosity analyzer and a density analyzer which provides signals corresponding to the viscosity and the API gravity of the lube oil fractions. A computer circuit provides a signal corresponding to the flash point of the lube oil fractions in accordance with the viscosity signal and the gravity signal.

Abstract translation: 设备提供在线确定润滑油馏分的闪点。 通过粘度分析仪和密度分析仪连续取样碳氢化合物，该分析仪提供对应于润滑油馏分的粘度和API比重的信号。 计算机电路根据粘度信号和重力信号提供对应于润滑油馏分的闪点的信号。

公开(公告)号：US3829376A

公开(公告)日：1974-08-13

申请号：US21432271

申请日：1971-12-30

Applicant: TEXACO INC

Inventor： HOPKINS W ,  CHVATAL L ,  WHITE W

IPC: G05D9/00 ,  C10G35/24 ,  G05D9/12 ,  C10G23/00

CPC classification number: C10G35/24 ,  G05D9/12 ,  Y10S208/01 ,  Y10T137/0324

Abstract: APPARATUS CONTROLS THE LEVEL OF OIL IN A SURGE TANK IN A PROCESSING UNIT OF A REFINING SYSTEM, RECEIVING A CHARGE LIQUID AND WHICH IN TURN PROVIDES A CHARGE LIQUID TO A SECOND PROCESSING UNIT OF THE REFINING SYSTEM. A SIGNAL IS PROVIDED CORRESPONDING TO A DESIRED CHANGE >FR TO BE MADE IN THE FLOW RATE OF THE SECOND PROCESSING UNIT CHARGE LIQUID. A FIRST CHANGE NETWORK RECEIVING THE CHANGE SIGNAL DETERMINES THE MAGNITUDE OF THE DESIRED CHANGE TO THE SECOND PROCESSING UNIT CHARGE LIQUID FLOW RATE AND PROVIDES A FLOW RATE SIGNAL FOR CONTROLLING THE FIRST PROCESSING UNIT CHARGE LIQUID FLOW RATE IN ACCORDANCE WITH THE DESIRED CHANGE SIGNAL. THE CHANGE >FH IN THE FIRST PROCSESSING UNIT CHARGE LIQUID FLOW RATE MAY BE EQUAL TO OR SOME PORTION OF THE CHANGE >FR TO BE MADE IN THE SECOND PROCESSING UNIT LIQUID FLOW RATE DEPENDING ON THE MAAGNNITUDE OF THE CHANGE SIGNAL. THE CHANGE >FH DIFFERES IN DIFFERENT PROPORTIONS DEPENDING ON THE MAGNITUDE OF THE CHANGE >FR. THE NETWORK INCLUDES AN ABSOLUTE VALUE CIRCUIT WHICH PROVIDES A SIGNAL CORRESPONDING TO THE MAGNITUDE OF THE CHANGE SIGNAL. THE CHANGE IN THE SECOND PROCESSING UNIT CHARGE LIQUID FLOW RATE IS DELAYED FOR A PREDETERMINED TIME INTERVAL AND THEN IMPLEMENTED. THE DURATION OF THE TIME INTERVAL IS ALSO DETERMINED AS A FUNCTION OF THE MAGNITUDE OF THE CHANGE >FR.

公开(公告)号：US3731071A

公开(公告)日：1973-05-01

申请号：US3731071D

申请日：1971-06-03

Applicant: TEXACO INC

Inventor： WHITE W ,  HOPKINS W

IPC: C10G35/24 ,  G06G7/58 ,  C10G35/04

CPC classification number: C10G35/24 ,  Y10S208/01

Abstract: A control system for maintaining the operating pressure of a product separator in a catalytic reforming unit at a minimum value so as to provide economical operation. The gas output from the product separator follows two distinct paths: one path includes a charge oil pretreating unit which provides hydrogen from the gas, the other path includes a high pressure absorber which also provides hydrogen from the gas. The pressure necessary at the product separator to provide steady flow in a path is determined for each each path in accordance with equations hereinafter described in detail. The pressures in the paths are sensed and corresponding signals provided. A network determines constraint pressures for the product separator and selects the greater constraint pressure. The control system maintains the product separator at that pressure.

Abstract translation: 一种用于将催化重整单元中的产品分离器的操作压力保持在最小值的控制系统，以便提供经济的操作。 从产品分离器输出的气体遵循两条不同的路径：一条路径包括从气体提供氢气的电荷油预处理单元，另一条路径包括还从气体中提供氢气的高压吸收器。 根据下面详细描述的方程，为每个路径确定产品分离器在路径中提供稳定流量所需的压力。 感测路径中的压力并提供相应的信号。 网络确定产品分离器的约束压力并选择较大的约束压力。 控制系统将产品分离器维持在该压力下。