Controls in the Alkali treatement & Lactum Extraction PID (PID-07)
1.    The flow-rate of the feed to LLE-1501 is set using a flow control loop (FT-101 , FIC-10710, FCV-10710), based on this flow-rate, the CS lye flow-rate is controlled using a ratio controller and the control valve (FCV-10711).

2.    There will be a second ratio controller that will control the flow-rate of the solvent going to LLE-1501 using control valve (FCV-10745) based on the feed flowrate (FT-101) going to LLE-1501.
Note: tag No FT-101 is just to denote that, the same flow transmitter (on the LLE-1501 feed line) will be used in both the above mentioned loops. 

3.     Similarly for LLE-1502, there will be a ratio controller to control the flowrate of the wash water going to LLE-1502 using the control valve (FCV-10731) based on the flowrate of the feed going to LLE-1502. There will be a flow transmitter on the feed line (40-PR-0722-B1) of LLE-1502.

4.     The level control loop (LCV-10728, LIC-10728)  on the receiver V-1516 is ok.