Document p29rvMR35VMrZ1KzgzoJ52jxw

PPG INDUSTRIES, INC. INDUSTRIAL CHEMICAL DIVISION LAKE CHARLES, LOUISIANA OHC-EDC PILOT PLANT OPERATING MANUAL July 20, 1971 Revised August 1975 MANUAL NO. ) Ip Jj? Z* ASSIGNED TO SL 050341 * TABLE OF CONTENTS I. INTRODUCTION II. EQUIPMENT DESCRIPTION A. Feed System U C2H4 2. HCI 3. Oxygen 4. Nitrogen B. Dowtherm System C. Reactor 1. Windbox and Feed Distribution Plate 2. Cooling Coils D. Condensing System E. Product Recovery F. Vent System III. STARTUP AND SHUTDOWN PROCEDURES A. Dowtherm Startup 1. Circulation and Air Purging 2. Dowtherm Heater 3. Dowtherm Cooling B. Reactor Startup 1. Catalyst Charging and Heatup 2. Reactor Startup C. Reactor Shutdown 1. Normal Shutdown 2. Emergency and/or AutomaticShutdown Page 1 2 2 2 2 2 2 3 3 3 4 4 4 4 5 5 5 5 6 7 7 7 9 9 9 SL 050342 IV. DATA AND SAMPLES A. Data Sheets and Logbook B. Samples V. SAFETY A. General B. Alarms and Responses APPENDIX Equipment Lists Reactor Drawing & Reactor Bottom Head Drawing Rotameter Curves and Miscellaneous Charts 11 11 11 12 12 12 14 SL 050343 INTRODUCTION PPG has operated a commercial OHC-EDC plant successfully since early 1969. The advantage of this process over the usual method for making EDC is that it consumes HCI rather than CI2- HCI is a by-product of the thermal cracking of EDC to produce vinyl chloride (VCM) and the OHC-EDC process makes it possible to produce VCM without by-product HCI. The OHC-EDC process can also, of course, take HCI by product from other sources such as liquid phase chlorination of EDC (known at Lake Charles as the Tetra unit). The commercial catalyst for PPG's OHC-EDC process isAttapulgus clay impregnated with copper and potassium chloride. PPG R & D has been working for several years on improve ments in catalysts to achieve higher heat transfer coefficients (increased reactor capacity), higher purity product and improved raw material utilizations. In 1971 the 28-inch pilot OHC reactor was installed at Lake Charles (from the Natrium Technical Center wh re th early process development was done) to provide a large-scale facility to test various im proved catalysts shown to be promising in smaller-scale laboratory work. The large-scale pilot reactor provides data to allow scale-up to commercial reactors in the areas of raw material conversions, heat transfer and corrosion/erosion rates. This manual contains a description of the pilot plant equipment, general operating pro cedures, safety considerations and various charts beneficial to those persons charg d with the operation of the facility. The section on startup and shutdown proc dures is general as these can be a function of the particular test and/or catalyst being evaluated. More detailed instructions will be given the operating personnel by the engineer in charge at the appropriate time. SL 050344 II. EQUIPMENT DESCRIPTION A. Feed System 1. C2H4 C2H4 is supplied to the pilot plant from tie-ins downstream from the No. 1 and No. 2 commercial reactor preheaters. Supply can come from either reactor system but preferably should be lined up to the operating reactor if the other one is down. The C2H4 passes through the rotameter and then mixes with the HCl and N2 feeds to the reactor windbox. The piping from the point of mixing with HCl and N2 up to just before the reactor is steam jacketed with 250 psig steam to provide superheat and prevent condensation in the windbox and lower portion of the reactor. 2. HCl HCl is supplied to the pilot plant from two possible sources. The most d sirable and highest quality HCl comes from a tie-in to the new 6" HCl header from the VCM unit. This line contains only VC-HCI with no contamination from EC, TCE or Tetra. There are also tie-ins to each of the Nos. I and 2 comm rcial reactor preheaters. This HCl contains all the contaminants in the HCl distri bution system. The HCl from the VC unit should be used whenever available as this makes interpretation of the pilot plant results, particularly crude quality, much more meaningful. 3. Oxygen Oxygen to the pilot plant comes from tie-ins to the Nos. 1 and 2 commercial reactor O2 preheaters. It is fed to the reactor through a rotameter and pre-p heat system (250 psig steam jacketed). As in the commercial plants, O2 sparged into the fluid bed separately from the C2H4 and HCl (mix d feed) to prevent prereaction. 4. Nitrogen Nitrogen comes to the pilot plant from the main N2 system in OHC. It is metered (rotameters) to both the mixed feed and the O2 piping systems for fluidization for startups, shutdowns, and periods of reactor outage. A small N2 stream is fed with the 02 to provide a material balance tie-component to allow calculation of the reactor vent. -2SL 050345 B. Dowth rm System The reactor temperature is controlled by circulating Dowtherm A through the internal coils. Since Dowtherm A boils at about 500F., no pressure will be required to keep it in a liquid state. The Dowtherm will be used to heat the reactor for startups as well as cool it during operation. When used to heat the reactor, the Dowtherm will flow from the circulating pump to the Hynes heater. From the heater, the stream goes to an orifice section wh re the circulation rate is measured, then to the Inlet header where the flow is distritributed to the five coils. From the reactor the flow is bypassed around the cooling system and returns to the pump. Dowtherm temperature control (and, therefore, reactor temperature control) is essentially a manual operation accomplished by adjusting the flow of Dowth rm through the shell and tube Dowtherm cooler. There is an automatic valve in the cooler by-pass loop but the nature of the system is such that it only provides a fine-tuning type of control (+ 5-10F.). However, as long as feeds are maintained steadily to the reactor, steady temperature operation is not difficult. The Dowtherm cooling in the reactor is accomplished by a system of five parallel tube banks of serpentine tubes. There are valves in the inlet side of each of thes tube banks to allow isolation of individual banks. This is to provide versatility to the reactor system. Normally under OHC-EDC conditions, all five banks are used. Dowtherm for changing the system comes from a tie-in at the No. 2 commercial reactor cooler. This tie-in is left open during pilot plant operation which allows the No. 2 reactor system to provide expansion room as the Dowtherm expands and contracts. C. Reactor The reactor is constructed entirely of Inconel 600 and is 28 inches in diameter. Drawings are included in the appendix. 1. Windbox and Feed Distribution Plate The feeds are distributed in the reactor in a manner similar to the system in the commercial reactors. Ethylene and HCI (no recycle) are mixed in the windbox and fed to the reactor through 2" high vertical nozzles. The oxygen is fed separately through nozzles that are 17" longer, thus the oxygen is Introduced at a higher point in the bed. t SL 050346 The plate which supports the feed nozzles is designed for a maximum of 15 pounds difference between the windbox and the reactor. That is, if the windbox were at 20 pounds pressure and the reactor at 1 pound pressure, an unsafe condition would exist and the plate might fail. The windbox pressure must never exceed the reactor pressure by more than 15 psig. 2. Cooling Coils The reactor shell is not {acketed. Cooling is entirely accomplish d by five banks of Inconel hairpin-type tubes. It is important that these tubes do not corrode. The best protection is keeping the coil temperature always above 300F. Flow should be kept on the coils at all times, even while the reactor isn't running. When the reactor is down, the Dowtherm temperature can be kept at or above 300F. with the Hynes heater. D. Condensing System The condensing system consists of three single-pass Karbate condensers in series. The ^3 condenser is refrigerated. The primary condenser is upflow, but the secondary and refrigerated condensers are downflow. A cyclone has been installed to remove some of the catalyst fines. This should be drained once per shift. E. Product Recovery The condensed liquid is degassed in a level-control led degassing chamber and forced by reactor pressure into the commercial plant intermediate crude storage system. For material balance purposes, a phase separator has been installed to allow measure ment of the organic and acid phases. During normal operation, the phase separator will be bypassed. F. Vent System The non-condensed gases are purged off the bottom of the refrigerated condenser. A control valve controls the operating pressure of the system. The vent gas is piped to the main plant scrubber. A tap is provided for taking vent gas samples. There is a knock-out pot which returns entrained liquid to the phase separator. -4SL 0503^7 III. STARTUP AND SHUTDOWN PROCEDURES A. Dowtherm Startup 1. Circulation and Air Purging Once the reactor is completely assembled (except for the bottom head and rupture disc), the Dowtherm can be added to the system. This should be done carefully and slowly to prevent trapping air or N2 in the piping which can cause the pump to vapor lock. If the piping is filled by sections, there are enough bleeds to purge most of the air m the system without significant Dowtherm loss. The system should be purged with dry N2 and checked for moisture before adding Dowtherm. Steam tracing on the charge line and around the flow metering section should be on before charging. The circulation pump can now be started. Make sure the seal flush system is lined up through a filter, the two coolers and back through the seal. Be sure the water to the seal flush coolers is on full. The pump should be hand rotated before starting to prevent damage to the mechanical seal faces. To assure that the pump is not dead-headed at anytime, the by-pass around the Dowtherm temperature control valve should be opened such that about a 40% flow is obtained on the flow indicator with the TCV closed. Flow should be lined up through the heater during Dowtherm system startup. All five reactor banks should be open until good circulation is established. The bleed in the Dowtherm line on the south side of the reactor top deck should be carefully cracked open occasionally until no more gas escapes. It is also a good practice to alternately force all the flow through each reactor cooling tube bank by closing the other four valves on the north side of the reactor. This provides a high velocity flow to force as much trapped air out of the coils as possible. When all five banks have been cleared, the valves can be opened again. 2. Dowtherm Heater When flow has been established through the heater, the heater can be turned on. The breaker for the heater is in the upstairs breaker room of the old OHC control building. The Dowtherm pump breaker is also located there on the same panel as the heater. Both are clearly marked. Once the heater breakers are engaged, the heater is started by setting the on-off temperature controller at the heater above the temperature indication on the controller. The three heater switches should be on. A click can be -5- 0503*8 SL heard when th heaters b come activated. With the insulation in good repair, the heater should provide about 15-20F. per hour h at-up rate to the fluidized reactor bed. Once the reactor has been started up and the heater is no longer required, the heater can be turned off by lowering the set point to 300*^. on the controller. A small flow should be maintained through the heater even when it is off. This assures that the relatively large Dowtherm volume in the heater loop stays hot, allowing a quicker heat-up period after a reactor shutdown. Dowtherm Cooling As the heat of reaction is picked up by the Dowtherm system after reactor startup, a point will be reached where it will become necessary to remove this heat by circulating a portion of the Dowtherm through the cooler. Prior to this time the Dowtherm valves on both sides of the cooler should be closed. To put the cooler in service, a good water flow must first be established. Before starting water flow, make sure both Dowtherm valves are closed. Next open the lower (inlet) Dowtherm valve (plug cock) fully. Th outl t (globe) valve can now be opened slowly. Feel the piping to this valve; wh n it starts to get warm you will know that Dowtherm is flowing. As soon as a small flow is established, check the reactor and Dowtherm temperature re sponses on the control room t & N recorder. Add more cooling carefully and slowly, allowing time for the system to fully respond. It is a good idea to set the Dowtherm automatic TCV about 1/2 to 2/3 open on manual until the desired,!ined-out temperatures are established . The controller can be put on automatic once the reactor and Dowtherm temperature are lined out at the desired point. The Dowtherm TCV provides only a + 5F. control so that larger upsets such as rate changes, heavy rain, etc. may require further manual adjustm nt using the cooler outlet valve. The temperature response to changes in the cooler outlet valve is very sensitive. Care should be taken to not operate more than 1/4 turn at a time. The above description assumes an initial startup. If the system has b en previously running and is being started up to approximately the sam conditions, the cooler downstream valve will be open to the previous setting. In this case startup of the cooler can be achieved by slowly opening the upstream plug cock. This will make the reactor easier to line out. -6- SL 050349 B. R actor Startup 1. Catalyst Charging and Heatup Catalyst is charged to the reactor through the rupture disc nozzle. Before adding catalyst, N2 flow to the reactor should be set at such a rate as to provide about 0.6 ft./sec. superficial velocity. If the vapor piping to the cyclone is in place, flush water should be on the primary condenser, the condensing system should be draining to the pad and the valves at the bottom of the cyclone and dipleg should be open. This will prevent fines blown out during the charging operation from accumulating in the system. Once all of the catalyst has been added, the reactor rupture disc can be installed. Before installing the disc, make sure that the reactor PCV is open to the plant scrubber. Reactor heatup can now proceed. The set point on the heater control can be set at 500F. The reactor should begin to heat up at 15-20F./hour. 2. Reactor Startup Once the reactor has reached startup temperature (usually about 425-435pF. with Florex catalyst), the startup (feed introduction) can begin. All parts of the system should be double checked for proper valve positions, etc. Flush H2O to the primary should be on and water to the condenser shells should be on. Brine should be circulating through the refrigerated condenser. The steam to the feed line preheaters must be on and the jackets hot. Prior to startup the supervising engineer will enter the following information in the logbook: a. Final desired feed rates in mole/hour and rotameter settings (% scale and pressure) b. Desired reactor superficial velocity c. Reactor temperature (hot spot and/or average) d. Reactor pressure e. Any other vital information as deemed necessary Tags should be made to post at the rotameters so there is no confusion during startup. It is advisable that two people be present during startup, at least until the operating people gain startup experience. Normally, one man can be in the field with a radio pack and one man can be in the control room watching temperatures and communicating with the field man by radio. SL 050350 Introduction of feeds should follow the sequence below: a. Add HCI at desired final rate and simultaneously cut out 1/2 of N2 to the windbox. b. Shortly after step (a), the water draining to the pad from the condensing system will turn green, indicating strong acid. The reactor temperatur will also begin to rise from the adsorption of HC! by the catalyst. At this time the condensing system should be opened to the degasser and the drain to the pad shut off. c. Add C2H4 at the desired final rate and reduce N2 flow to windbox to zero. Do not block off N2 to windbox tightly until it is ascertained that there are no serious leaks, etc., which might necessitate shutting off HCI and C2H4 for a period of time. d. Begin adding O2 slowly to about 1/4 the desired final rate. Do not reduce N2 to the O2 header at this time. e. If the reactor temperature starts to increase noticeably after this 0 addition, add more O2 to about 1/2 rate. N can now be reduc a to the final setting specified in the logbook. f. At this point, a sample of the vent should be taken and analyzed for % O2. Additionally the bed temperature should respond to the additional C>2. g. If the O2 in the vent is below 8% and the bed temperature is still rising, more O2 can be added to 3/4 of full rate. h. As the bed temperature approaches the desired operating temperature, the heater set point should be lowered and a small flow started through the cooler. i. C>2 can now be added at the final rate. For startups with catalyst other than the "standard" Florex type, another vent sample should be taken before this final step. With the "standard" Florex catalyst, it is well established that as long as temperatures are responding and the bed is over 500-525F., O2 in the vent will be > 8%. j. The vent should be analyzed at this point and % burning and C2H4 conversion calculated, k. All that remains at this point is lining out temperatures by adjusting the Dowtherm flow through the cooler as described in the Dowtherm startup section. -8SL 050351 By adjusting the heater by-pass valve, a small flow can be left through the heater. This is advisable so as not to shock the system during a shutdown. This procedure will greatly shorten a reactor turnaround for minor maintenance. C. Reactor Shutdown 1. Normal Shutdown To shut the reactor down in a routine orderly manner, the following steps should be followed: a. Turn on primary condenser flush water. b. Take out O2 feed and increase N2 to O2 system to fluidization rat (noted on the rotameter glass). Open reactor PCV fully on manual. c. Replace C2H4 with equivalent amount of N2 to windbox. d. Remove HCI feed and simultaneously increase N2 to windbox to full fluidization rate. e. Block Dowtherm to cooler (upstream valve only). f. Set up Dowtherm heater controller if startup in the near future is anticipated. This step will depend on the circumstances of the shutdown. The important criteria to remember are: a. 02 is the last feed added and the first removed during startups, shutdowns and rate adjustments. b. Flush water to the primary condenser should be on when O2 is not being fed. c. The reactor PCV should be wide open on manual except during times of operation at higher-than-atmospheric rates. 2. Emergency and/or Automatic Shutdown In case of an OHC plant emergency, the pilot plant can be partially shut down from the control room by activating the shutdown switch behind th west control panel. Ail pilot plant operating personnel should become familiar with the location of this switch. When activated, this switch causes an automatic valve in the O2 line to the pilot plant to close. HCI and C2H4 continue to flow. As soon as conditions permit, C2H4 and HCI flows should be stopped and N2 added. The reactor PCV should be opened immediately. -9- SL 050352 Loss of HCI flow is the most serious problem which can occur in the pilot plant. This would result in feeding C2H4 anc* ^ r actor 'n 0 m'*ture which would be flammable. To prevent this, low HCI feed pressure as monitored at the rotameter, automatically closes the valve in the C>2 line. There Is an alarm which warns the operator of falling HCI pressure in advance of the shutdown. This is to allow time to adjust for small pressure upsets as opposed to actual loss of HCI supply. When the system trips, it will not reset automatically. This feature prevents O2 from flowing un controlled to the reactor when the HCI pressure returns. The O2 rotamet r valves should be closed manually before resetting the shutdown system. The reset button is located just below the shutdown switch behind the west (Tetra plant) control board. -10- SL 050353 IV. DATA AND SAMPLES A. Data Sheets and Logbook Data sheets are provided for recording the various flows, temperatures, I vels and pressures. The frequency of recording will be specified by the supervising engin ers and communicated in the logbook. Normally,data are recorded hourly. The engineer's logbook serves to record unusual observations, instructions and results of analyses. It is perhaps most valuable as a communication tool between shift engineers and between the supervising engineer and the shift' engin r. Entries in the logbook should be written clearly and in ink with no skipping of pages (for patent purposes). Remember, it is better to write too much than not enough. It is a good practice to write down events as they occur if possible, rather than waiting until the end of the shift and relying on memory. B. Samples General control analyses will be run by the shift engineers. These will consist of: a. Reactor vent gas (Fisher GC) b. Reactor crudes (F&M GC) c. Acid phase titrations The frequency of these will be determined by the supervising engineer and normally has been two vents, two crudes and four acid analyses per shift. Catalyst samples will be taken while charging, when draining and, perhaps, periodically during a run. Special analyses and/or more complete analyses will be run by the main lab on an as needed basis. -11- SL 050354 V. SAFETY A. General The pilot plant handles no materials not common to the commercial plants (with the exception of catalysts). The safety section of the main OHC operating manual should be reviewed by all concerned with the pilot plant. Safety should be the prime consideration in making any decisions regarding the operation of the pilot plant. All pilot plant personnel should maintain good contact with the lead op rator and be aware of any problems in the plant. Conversely, the pilot plant engine rs should keep the lead operator informed of pilot plant status at all times. This communication cannot be over-emphasized.The pilot plant shift engineer should wear a radio pack when in the unit to maintain contact with the control room. A hazard for the pilot plant people to be particularly aware of is the main plant gas-fired Dowtherm heater. Know when it is on and know how to shut it down if you have to. A major C2H4 break could have serious repercussions with this heater in operation. The heater can be shut down both from the control room and the field. B. Alarms and Responses Listed below are the alarms on the pilot plant and normal responses that should be made if they sound. Of course, special situations could dictate different responses. a. Reactor High Temperature Response: Increase cooling if from a cooling deficiency. Shut down if this fails. b. Degasser Level Response: This alarm sounds on both high and low level. In either case, correction should be made with the level control valve. High lev I can result from insufficient reactor pressure to force the liquid product into the plant system. If a slight reactor pressure increase does not produce a lower level, the possibility of a plugged line must be considered. c. High Reactor Pressure Response: Op n reactor PCV. If pressure does not come down, shut down immediately. It may not be possible to fluidize with N2 after shutdown, depending upon the caus of the high pressure. -12- SL 050355 d. Dowth rm Pump Response: Try to restart immediately. If restart fails, take out C>2 immediately. Loss of cooling will cause high reactor temperature. e. Low HCI Pressure Response: If the alarm is due to a momentary fluctuation or upset at VC, station yourself by the HCI rotameter and keep the flow steady as the pr ssure comes back. If it is apparent that it is not coming back, shut down reactor. If pressure gets too low, the shutdown system will trip out C>2. f* Shutdown System Response: I f caused by a momentary HCI pressure loss and the pressur has been restored, station yourself by the C>2 rotameter, have someone in the control room reset the shutdown system and make sure the O2 flow nev r exceeds the setting prior to the shutdown. Do this only after HCI flow has stabilized and providing the reactor temperature has not fallen below 500F. Another hazardous situation which can arise and is not automatically alarmed is O2 concentration in the vent. This must not be allowed to exceed 8% O2. If the v nt analysis shows high 02/ it is an indication of either loss of reaction or f d im balance. If a check of the feed rates shows the proper flows, then O2 should be reduced slightly (say 1 or 2 rotameter divisions). If this fails to lower O2 sufficiently, N2 can be added to the feeds to dilute the vent. If you are unable to lower the concentration, shut the unit down and notify the supervising engineer. -13- SL 050356 APPENDIX -14- SL 050357 REACTOR Reactor 28" O.D. x 24' Inconel 600 Wall thickness 3/8" Tubes - 2" Inconel Schedule 40 157.91 ft.^ total heat transfer area -15- SL 050358 CONDENSERS E-l, E-2 Primary & Secondary Condensers - Single Pass Tube Side Manufacturer & Model - National Carbon Division of Union Carbide Corporation Series 7000 "Karbate" Size 10-144 Material of Construction - Karbate Tubes Steel Shell Area - 122 ft.2(outside) Design Pressure & Temperature - 75 psig & 338F. Tubes - 31 - 7/S'I.D. - 1 1/4" O.D. x 12" SAC No. 71-1372 (secondary) 71-1370 (primary) E-3 Refrigerated Condenser - Single Pass Tube Side Manufacturer & Model - National Carbon Division of Union Carbide Corporation Series 6800 "Karbate" Size 6-108 Material of Construction - Karbate tubes, steel shell Area - 26.5 ft.2 (outside) Design Pressure & Temperature - 75 psig and 338F. Tubes - 9 - 7/8" I.D. - 1 1/4" O.D. x 9' SAC No. 71-1371 -16- SL 050359 HEAT EXCHANGERS E-4 Dowtherm Cooler Manufacturer & Model - Doyle & Roth LL864-12H Material of Construction - Steel tube and shell Area - 94 ft/ - four pass Design Pressure & Temperature - 150 psig & 400F. Tubes - (40) 3/4" O.D. x #16 BWG Steel tubes 12'-0" long "SAC #71-660 E-5 Dowtherm Heater Manufacturer & Model - Hynes Dowtherm Vaporizer 60 Kilowatt - 460 volt - 3 phase Tubes - (6) 3" Sch. 40 x lO'-O" heater length, steel Design Pressure & Temperature - 150 psig at 750F. SAC # 71-1373 -17- SL 050360 TANKS T-l Degasser Haveg 41 - design 40 psig & 200F. 3' 6" x 8' 9 1/4" SAC # 60-965 T-2 Phase Separator Haveg 41 - design 40 psig & 200F. 3' 6" x 8' 9 1/4" SAC # 60-1011 -18- SL 050361 PUMPS & MOTORS Dowtherm Circulation Pump Type - Duriron Centrifugal WHJ3-0130 Material of Construction - Durimet 20 SAC # 55-1745 Driver - 20 HP, 1170 RPM electric motor Frame 286 T SAC * 50-2068 -19- SL 050362 RD - 1 RUPTURE DISCS & RELIEF VALVES Top of Reactor 10" Karbate rupture disc 40 psig bursting pressure SRV - 1 Dowtherm Heater Lonergan ^ 23-W-223 safety relief valve 150 psig set pressure SRV-2 Dowtherm Cooler Series 1870 - 1/2" D1 Farris safety relief valve 150 psig set pressure -20- SL 050363 ROTAMETERS R-l HCl Feed FP-1 1/2 -27 - G tube 1 1/2 BNSVT - 83 SS float 77.4 scfm at 0 psig & 70F. SAC * 80-7265 R-2 Ethylene Feed FP - 1 - 35 - G tube 1 BNSVT - 63 SS float 51.8 scfm at 0 psig & 70 F. SAC * 80-7263 R-3 Nitrogen Feed - MF Header FP - 1 - 35 - G tube 1 GNSVT - 65 SS float 41.6 scfm at 0 psig and 70F. SAC * 80-7264 R-4 Oxygen Feed FP-3/4 -27 - G tube 3/4 BNSVT - 53 SS float 22.4 scfm at 0 psig & 70F. SAC * 80-7262 R-5 Nitrogen Feed - Oxygen Header FP - 3/4 - 21 - G tube 3/4 BNSVT - 54 SS float 11.3 scfm at 0 psig & 70F. SAC * 80-7266 R-6 Nitrogen Pressure Transmitter Purge FP 1/8 - 08 - P - 3/37 tube SS float 900 sec/min. air at 14.7 psia & 70F. -21- SL 050364 CONTROL VALVES TCV-201 Dowtherm Temperature Control Valve 4" C.S. Klelley Mueller Valve SAC # 80-5655 ILCV-603 Degaser Level Control Valve WKM - V-200 - 1" ball valve SAC * 80-4673 PCV-503 Vent Pressure Control Valve Fisher/Grinnel 2" Weir type valve SAC * 80-6589 "22~ SL 050365 SL 050366 FIGURE V8*. `,vv-* INDUSTRIAL CHEMICAL DIVISION V'., 5 V I I I S LAKE CHARLES I ^ ai*iis-->r*,_|_CaTiI t^CAU. titi p pa*1 omc. r??-Ac.Tf aC*r - Lrfwl fa*`KAi.iiiii c:x7or LOUISIANA DV/G. NO. SL 050367 rr 'Iim'KTTT SL 050369 C0C K*C 5 X 5 TO V* INCH TX 10 INCHES 46 0860 WASt IMI1. KCUFTEE ft CSSCH CO. \ 4 SL 050376