Systems and methods for enhanced process control of amine circulation pumps

Abstract

The present disclosure generally relates to an override control component for natural gas processing. The control system may include a first memory and first set of one or more processors, the first set of one or more processors configured to cause the override control component to perform one or more steps. The steps may include receiving, from an auto-start logic component, one or more initial control signals generated in response to at least one parameter exiting a threshold range, wherein the at least one parameter exiting the threshold range is caused by an active/standby mode change at one or more amine pumps. The steps may include generating one or more control signals based on the one or more initial control signals. The steps may include outputting the one or more control signals, the one or more control signals configured to cause an adjustment at a flow control valve.

The invention claimed is: 
     
         1 . An override control component comprising a first memory and first set of one or more processors, the first set of one or more processors configured to cause the override control component to:
 receive, from an auto-start logic component, one or more initial control signals generated in response to at least one parameter exiting a threshold range, wherein the at least one parameter exiting the threshold range is caused by an active/standby mode change at one or more amine pumps;   generate one or more control signals based on the one or more initial control signals; and   output the one or more control signals, the one or more control signals configured to cause an adjustment at a flow control valve.   
     
     
         2 . The override control component of  claim 1 , wherein causing the override control component to generate the one or more control signals further causes the override control component to:
 validate the one or more initial control signals; and   output the one or more initial control signals.   
     
     
         3 . The override control component of  claim 1 , wherein causing the override control component to generate the one or more control signals further causes the override control component to modify the one or more initial control signals to construct the one or more control signals, the one or more control signals configured to actuate the flow control valve to an intermediate position. 
     
     
         4 . The override control component of  claim 3 , wherein the adjustment maintains a flow value of a system and a pressure value of the system. 
     
     
         5 . The override control component of  claim 1 , wherein causing the override control component to generate the one or more control signals further causes the override control component to cancel the one or more initial control signals. 
     
     
         6 . The override control component of  claim 1 , wherein the at least one parameter comprises at least one of:
 a common discharge header setpoint value;   an amine pump capacity setpoint value;   a max capacity limit; and   a suction pressure value.   
     
     
         7 . The override control component of  claim 6 , wherein exiting a threshold range comprises:
 measuring the common discharge header setpoint value to be below 630 gallons per minute;   measuring the amine pump capacity setpoint value to be below 50% amine pump capacity;   detecting the max capacity limit for an amine pump; or   measuring the suction pressure value to be below about 73 PSIG.   
     
     
         8 . The override control component of  claim 1 , wherein the one or more initial control signals are exchange control action signals configured to cause an actuation of the at least one flow control valve to a maximum actuation position. 
     
     
         9 . The override control component of  claim 1 , wherein the one or more control signals are configured to control, after the active/standby mode change, a first flow from an active amine pump, a second flow from a standby amine pump, or both the first flow and the second flow. 
     
     
         10 . The override control component of  claim 1 , wherein the auto-start logic component comprises a second memory and second set of one or more processors, the second set of one or more processors configured to cause the auto-start logic component to:
 receive flow information from a flow indicator, the flow indicator detecting the at least one parameter; and   output the one or more initial control signals, the one or more initial control signals generated based on the detecting.   
     
     
         11 . The override control component of  claim 10 , wherein:
 the first memory is the same as or different from the second memory; and   the first set of one or more processors is the same as or different from the second set of one or more processors.   
     
     
         12 . A control loop comprising:
 a flow indicator (FI);   a flow control valve (FCV);   a flow indicator controller (FIC) coupled to the FI and the override control component, the FIC having an auto-start logic component; and   an override control component coupled to the FCV and comprising a first memory and first set of one or more processors, the first set of one or more processors configured to cause the override control component to:
 receive one or more initial control signals generated in response to at least one parameter exiting a threshold range, wherein the at least one parameter exiting the threshold range is caused by an active/standby mode change at one or more amine pumps; 
 generate one or more control signals based on the one or more initial control signals; and 
 output the one or more control signals, the one or more control signals configured to adjust the FCV. 
   
     
     
         13 . The control loop of  claim 12 , wherein causing the override control component to generate the one or more control signals further causes the FIC to modify the one or more initial control signals to construct the one or more control signals, the one or more control signals configured to actuate the flow control valve to an intermediate position. 
     
     
         14 . A method for controlling an amine gas pump system, comprising:
 receiving, at an override control component, one or more initial control signals generated in response to at least one parameter exiting a threshold range, wherein the at least one parameter exiting the threshold range is caused by an active/standby mode change at one or more amine pumps;   generating one or more control signals based on the one or more initial control signals; and   outputting the one or more control signals, the one or more control signals configured to adjust at least one flow control valve.   
     
     
         15 . The method of  claim 14 , wherein generating the one or more control signals based on the one or more initial control signals further comprises modifying the one or more initial control signals to construct the one or more control signals, the one or more control signals configured to actuate the FCV to an intermediate position.