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Date subject
April 2, 1976
Oxychlorination Water By-Pass of T-103 Design No: 75-100-376-DHJ
Attached are the process modifications required to bypass the oxychlorination
water from the EDC acid wash tank, T-103, to the steam stripper feed drum,
T-110.
/
Information received from Shell indicates that their Light Ends column fouling was substantially reduced by bypassing the oxychlorination water from the EDC acid wash system. Shell reports that washing may be accomplished by adding fresh water to T-103 with residual chlorine and hydrogen chloride in the EDC providing sufficient acidity for ferric chloride removal. Shell adds approx imately 10 GPM process water to T-103 to hold the concentration of HC1 at 0.5% in the water layer. Shell is doing this in both their plants. Also, they claim slightly reduced caustic consumption.
Minor piping modifications will allow bypassing the oxychlorination water from T-103 to the neutralization pit, T-252, or T-110 once it is installed. There is an existing process water connection to T-103A with a rotameter which will allow the acid strength of the water layer of T-103A to be controlled at 0.5% HC1. The water layer of T-103A will be analyzed once per shift for acid strength and the EDC layer analyzed for FeClg once per shift. During the first startup of this wash system, both the water and EDC phases will be analyzed more frequently to better monitor this wash change. An existing 1" valve on the line from T-103A to P-110, acid wash circulating pump, will be used for the water sample point.
Since the oxychlorination water contains approximately 20 GPM EDC from S-306 and S-307, a level controller and control valve will be installed-to control the EDC level in T-110. The existing level transmitter, LT-115B, on T-110 will be used and a surplus control valve and controller will be installed in the discharge line of P-255. The level controller will be locally mounted during the test. If the test proves successful the level controller will be board mounted.
David H. Jones
JAD-JF(5)-JRH(4)-CEG-JHM-DWL
CCR 000039067
F L O W C H A R T AND B L O C K D IA G R A M
1233333 \V/
PLANT
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SPECIFICATION SMCET
CONTROL VALVES
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ELIO RUNIC INSTRUMENTS SHALL HAVE A SOLID STATE SYSTEM
ELECTRIC CHART DRIVE I IS VOLT CO CYCLE SYNCHRONOUS MOTOR
MI CH CHARI DRIVE 2 4 HOUR SPRING WIND
PROPORTIONAL HAND COMPLETELY ADJUSTAOLC
INSTR rt.JG CLASSIFICATION IS CLASS I GROUP 0. DIVISION 2. UNLESS OTHERWISE NOTED
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CCR 000039070
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CONTINENTAL OIL COMPANY
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INf lIC A I OR OR REt:<1ROEf( INPUT SIGNAL PNKU ELEC LOCATION YARO TANGl. MOUNTING YOKE FLUSH NO OF PENS OR POINTERS CHART SIZE CIRCULAR . strip CHART RANGE w CHART NUMOER w CHART FACTOR u CHART DRIVE MCCH . ELEC |g SCALE RANGE CALIBRATED ACCURACY SENSITIVITY REPEAT ABILITY
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Pa/BU . y /f ftsXJ
J fo/Arre/z-
............ A......
4
l i
CONTROL*. Mi LOCATION
CONTROLLER ACTION
PROP BAND PER CENT c AUTOMATIC RESET j DERtVAT IVC
0fc CASCADE RESET Qy
REPEATABILITY u SENSITIVITY
ACCESSORIES
INPUT OUTPUT
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.
manufacturer
MOOLL NO. PRICE
GL'NERAL specifications hecoudcr ink supply capillaffy with e months min. supply
'
*AIL CONTROL STATIONS SHALL HAVE A VALVE POSITION INDICATOR. AUT OMATIC .MANUAL S WITCH. AND DIRECT RI VC RSI SWITCH
ELECTRONIC INSTRUMENTS SHALL HAVE A SOLID STATE SYSTEM ELECTRIC CHART DRIVE 115 VOLT SO CYCLE SYNCHRONOUS MOTOR MECII CIIAm DRIVE 24 HOUR SPRING WIND PROPORTIONAL BAND COMPLETELY ADJUSTABLE INSTH ELEC CLASSIFICATION IS CLASS 1 GROUP D. DIVISION 2. UNLESS OTHERWISE NOT LD
CCR 000039082
r
433-S
NOTES
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//
(conoco)
Design No: VCM -
CONTINENTAL OIL COMPANY LAKE CHARLES VCM PLANT LAKE CHARLES, LA.
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Sheet___ l_ Of /
DESIGNATION
Flowing Fluid From
Service To
PIPING SCHEDULE
NOR MAL Temp. Press.-
F PSIG
ML
ISU DESIGN
DATE
DESCRIPTION BY 1
CKD A5
Temp. F
Press. ' Flow PSIG . ' Ib/hr.
lb/- V Vel. PSI n 3 i ft/sec AP/IOO'
v-jUi-i-fJ-ycz-Z-z. 0Jffre.fi. 5-361
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9# E'o
/o4
0-4 L /7ty 03?
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1,0 2-0, ooo 62# L /.79 0,49.
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9o 40
/TLV^'OOd n.o L 3/
03
' -
__________ ___________
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t
Made by,.
Checked by .
Date________ 2= '
Page_______
of. .
' CONTINENTAL OIL COMPANY
CALCULATION SHEET
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Job No..
P.gjDm
________ State.
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