INSTRUCTION MANUAL. CET MkII TUBULAR REACTOR. CET MkII ISSUE 16

Transcription

1 INSTRUCTION MANUAL CET MkII TUBULAR REACTOR CET MkII ISSUE 6 JANUARY 26

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3 IMPORTANT SAFETY INFORMATION All prcticl work res nd lbortories should be covered by locl regultions which must be followed t ll times. If required, Armfield cn supply typicl set of lbortory sfety rules. Your CEX rector bench hs been designed to be sfe in use when instlled, operted nd mintined in ccordnce with the instructions in this mnul. As with ny piece of sophisticted equipment, dngers my exist if the equipment is misused, mishndled or bdly mintined. Wter-Borne Hzrds The equipment described in this instruction mnul involves the use of wter which under certin conditions cn crete helth hzrd due to infection by hrmful microorgnisms. For exmple, the microscopic bcterium clled Legionell pneumophil will feed on ny scle, rust, lge or sludge in wter nd will breed rpidly if the temperture of wter is between 2 nd 45 C. Any wter contining this bcterium which is spryed or splshed creting ir-borne droplets cn produce form of pneumoni clled Legionnires Disese which is potentilly ftl. Legionell is not the only hrmful micro-orgnism which cn infect wter, but it serves s useful exmple of the need for clenliness. Under the COSHH regultions, the following precutions must be observed: Any wter contined within the product must not be llowed to stgnte, i.e. the wter must be chnged regulrly. Any rust, sludge, scle or lge on which micro-orgnisms cn feed must be removed regulrly, i.e. the equipment must be clened regulrly. Where prcticble the wter should be mintined t temperture below 2 C or bove 45 C. If this is not prcticble then the wter should be disinfected if it is sfe nd pproprite to do so. Note tht other hzrds my exist in the hndling of biocides used to disinfect the wter. A scheme should be prepred for preventing or controlling the risk incorporting ll of the ctions listed bove. Further detils on preventing infection re contined in the publiction The Control of Legionellosis including Legionnires Disese - Helth nd Sfety Series booklet HS (G) 7. ELECTRICAL SAFETY The equipment described in this Instruction Mnul opertes from mins voltge electricl supply. It must be connected to supply of the sme frequency nd voltge s

4 mrked on the equipment or the mins led. If in doubt, consult qulified electricin or contct Armfield. The equipment must not be operted with ny of the pnels removed. To give incresed opertor protection, the unit incorportes Residul Current Device (RCD), lterntively clled n Erth Lekge Circuit Breker, s n integrl prt of this equipment. If through misuse or ccident the equipment becomes electriclly dngerous, the RCD will switch off the electricl supply nd reduce the severity of ny electric shock received by n opertor to level which, under norml circumstnces, will not cuse injury to tht person. At lest once ech month, check tht the RCD is operting correctly by pressing the TEST button. The circuit breker MUST trip when the button is pressed. Filure to trip mens tht the opertor is not protected nd the equipment must be checked nd repired by competent electricin before it is used. HOT SURFACES AND LIQUIDS The unit incorportes pumped electric wter heter, nd is cpble of producing tempertures tht could cuse skin burns. Before disconnecting ny of the pipes or tubing: - Stop ll the pumps. - Leve time for the wter to cool - Check tht the temperture is t sfe level Do not touch ny surfces close to Hot Surfces wrning lbels, or ny of the interconnecting tubing, whilst the equipment is in use. CHEMICAL SAFETY Detils of the chemicls intended for use with this equipment re given in the Product Mnuls for the different rector options vilble with this equipment. Chemicls purchsed by the user re normlly supplied with COSHH dt sheet which provides informtion on sfe hndling, helth nd sfety nd other issues. It is importnt tht these guidelines re dhered to. Note: - It is the user s responsibility to hndle chemicls sfely - Prepre chemicls nd operte the equipment in well ventilted res - Only use chemicls specified in the equipment mnuls nd in the concentrtions recommended 2

5 ARMFIELD LIMITED OPERATING INSTRUCTIONS AND EXPERIMENTS CET TUBULAR REACTOR. INTRODUCTION 5 2. EQUIPMENT DESCRIPTION 7 2. The Rector Vessel Flow of mterils 8 3. OPERATION 2 3. Switching-on the unit Filling the feed tnks Controlling the feed pumps Opertion of temperture controller Operting the console Clibrting the feed pumps Operting the CET MkII 4 4. SPECIFICATIONS 5 4. Rector dimensions: 5 5. EXPERIMENTAL PROCEDURES 6 5. EXPERIMENT A EXPERIMENT B EXPERIMENT C NOMENCLATURE ROUTINE MAINTENANCE Generl RCD test Clibrtion of the conductivity sensor APPENDIX: CET/CEX INSTALLATION GUIDE 28 3

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7 . INTRODUCTION Tubulr rectors re often used when continuous opertion is required but without bckmixing of products nd rectnts. The Armfield CET MkII Tubulr Rector is specilly designed to llow detiled study of this importnt process. It is one of three rector types which re interchngeble on the Rector Service Unit (CEX MkII), the others being CEM MkII - Continuous Stirred Tnk Rector nd CEB MkII - Btch Rector. Rections re monitored by conductivity probe s the conductivity of the solution chnges with conversion of the rectnts to product. This mens tht the inccurte nd inconvenient process of titrtion, which ws formlly used to monitor the rection progress, is no longer necessry. CEX fitted with CET MkII tubulr rector 5

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9 2. EQUIPMENT DESCRIPTION 2. The Rector Vessel The rector vessel () is set on bseplte (4) which is designed to be locted on the four studs of the CEX service unit nd then secured by thumbnuts (5). The positioning of the rector on the service unit is illustrted. The rector is positioned on the service unit with the non-return vlve sited on the left nd towrds the rer The tubulr rector in which the chemicl rection tkes plce is flexible coil (4) wound round n crylic former. Totl volume of the rector coil is.4 L. In order to mintin constnt temperture throughout the rector coil, the coil bundle is submerged in circulting wter which is utomticlly mintined t pre-selected 7

10 temperture by the temperture controller (TIC) in the console. The ctul temperture of the circulting wter nd therefore the rectnts is relyed to the controller by sensing probe (TS) which is held in glnd (8) in the lid. Wter enters from the circultor t the non-return vlve () - this prevents wter drining bck through the priming vessel of the circultor when the pump is stopped. Wter leves the rector t overflow (2) nd returns to the circultor A filling plug (7) is provided on the top of the rector vessel to llow the vessel to be filled with clen wter. This plug (with seling wsher) must be fitted when the hot wter circultor on the CEX service unit is in opertion. Sockets in the side of the console pod of the service unit re provided to connect the conductivity probe nd temperture sensor to the instrumenttion in the console. These re of different size so tht the probes cnnot be wrongly connected. When not in use, the rector cn be drined using vlve (3) in the bse. 2.2 Flow of mterils Rectnts re pumped from the two feed tnks by the peristltic pumps nd enter the rector through connectors (6) nd (7) in the lid of the vessel. Ech rectnt is preheted by het trnsfer coils (2) nd (3) before being blended together in T fitting (5). The rectnts pss up through the rector coil nd leve the rector vessel through the conductivity probe housing (6). This housing llows the conductivity probe (CP) to be 8

11 held in the strem of rectnts emerging from the rector. Flexible tubing from the hose nozzle () is used to guide the rectnts to drin. 9

12 rmfield CP REACTANTS OUT CONDUCTIVITY PC OUTPUT REAGENT VESSEL NO. REAGENT VESSEL NO.2 TS T I C REACTOR PRIMING VESSEL TH HOT WATER CIRCULATOR FS DRAIN DRAIN DRAIN FEED PUMP NO.2 DRAIN FEED PUMP NO. CET MKII TUBULAR REACTOR

13 CET TUBULAR REACTOR

14 3. OPERATION The pprtus must be set up in ccordnce with the instlltion sheet supplied (see Appendix A for detils). Additionlly, ensure tht you hve red the sfety informtion t the beginning of this mnul. 3. Switching on the unit The unit is switched on using the switch on the front of the unit. The circuit brekers nd RCD device locted t the rer of the unit should be turned on beforehnd. Both the temperture controller nd conductivity disply should illuminte. rmfield On/off switch 3.2 Filling the feed tnks Lift the feed tnk lids nd pour solutions in from bove. A drin tp is locted t the bse of ech vessel in order to drin residul liquid. Lid Drin vlve for ech tnk 3.3 Controlling the feed pumps For norml use the feed pump is set to MANUAL nd controlled using the rotry switch next to the pump hed. Turning the dil clockwise increses pump speed. The pump cn be switched off by reducing the pump speed to zero or by chnging the switch to the REMOTE position. FRONT VESSEL Speed control Mnul/remote switch Dt logging port 2

15 3.4 Opertion of temperture controller Temperture is displyed in C. The setpoint temperture is shown by pressing button nd the vlue djusted up nd down using buttons 2 nd 3 respectively. The disply will revert to the process temperture fter short period. out le TEMPERATURE CONTROL MTW C 2 3 CONDUCTIVITY ms DATA O/P 3.5 Operting the console When the CEX is used with the hot wter circultor then switch (9) should be positioned to het. It is used in the chill position when CEX is used in conjunction with the CW6 chiller. If the CW6 chiller is used, the led for the solenoid vlve should be plugged into socket (). Temperture in the rector is displyed on the controller (5). The hot wter circultor is turned on using switch (6). Conductivity is displyed on the meter (7) nd cn be remotely logged from socket (8). Note: when using the chiller the temperture, controller prmeters should be chnged in ccordnce with the Routine Mintennce section. 5 7 out TEMPERATURE CONTROL le CONDUCTIVITY ms HEAT CHILL C MTW SOL. DATA O/P Clibrting the feed pumps Both peristltic pumps require clibrtion so tht exct flow rtes re known. Clibrtion should be crried out for both pumps since there my be smll differences between them. Fill both regent vessels. Set the feed pump to 2. nd determine the flow rte by mesuring the volume collected for defined period. Repet the procedure for 4., 6., 8. nd. nd plot flowrte versus pump speed. 3

16 3.7 Operting the CET MkII Temperture in the rector is controlled by circulting heting or cooling liquid through the interior of the rector (3). The volumetric rtio in which the rectnts re mixed is defined by the reltive flow rtes of the two pumps. If the pumps re operted t the sme flow rte then the rectnts re mixed in equl volumes. The residence time in the rector is defined by the totl flow rtes of the two feed pumps. The totl volume of the rector coil is pproximtely 4 ml. Dividing this volume by the combined flow rtes of the feed pumps in ml/s will yield the residence time in seconds. The extent of conversion of the rectnts is determined from the conductivity, which is mesured by the conductivity probe sited in the housing (6) where the liquid strem exits the rector. It is importnt tht the probe is inserted into the housing with the electrode ccess holes in the glss surround in line with the flow. Regent inlets Hot wter out Pre-het tubes Rector coil Hot wter in (outlet of hot wter circultor) T piece Drin vlve 4

17 4. SPECIFICATIONS 4. Rector dimensions: Pre-het coils (ech): Totl length:.2m Internl dim: 4.9mm Totl vol of coil:.2l Rector coil: Totl length: 2.9m Internl dim: 5.mm Totl vol of coil:.4l 5

18 5. EXPERIMENTAL PROCEDURES The Armfield Continuous Tubulr Flow Rector is designed to demonstrte the mechnism of chemicl rection in such rector s well s the effects of vrying the process conditions such s rection temperture, rectnt concentrtion, feed rte etc. The rection chosen is the sponifiction of ethyl cette by sodium hydroxide s it cn be crried out under sfe conditions of temperture nd pressure nd is well documented. Although it my be possible to crry out demonstrtions using other chemicls it is not dvisble s the mterils of construction of the rector my not be comptible. Before crrying out rections involving ny other regents plese refer to Armfield Ltd. for dvice. DILUTION OF ETHYL ACETATE FOR USE WITH CET MKII REACTOR Armfield recommends the use of.m solution of Ethyl Acette in the CET MkII rector. This should be mde by diluting concentrted Ethyl Acette s follows: Volume of concentrte = Mol Wt Density 88. = = 9.79 ml per litre of solution.9 Therefore dd 9.79 ml of concentrted Ethyl Acette to 9 ml of deionised or distilled wter. Shke the mixture vigorously until the two liquids hve mixed. Add further wter to mke up the finl volume to ml. Note: The prctice of mking strong solution (e.g. M) then further diluting this to the required concentrtion (e.g..m) cnnot be pplied when using Ethyl Acette. The required dilution should be mde directly s stted bove. DILUTION OF SODIUM HYDROXIDE FOR USE WITH CET MKII REACTOR Armfield recommends the use of.m solution of Sodium Hydroxide in the CET MkII rector. This my be mde by dding 4.g of NOH to 96ml of deionised wter then mking up the solution to ml. 6

19 5. EXPERIMENT A To determine the rte constnt using tubulr rector THEORY The rte expression cn be shown to be where if µ is equl to b µ this simplifies to r = k b 2 r = k In the generl cse the order of rection n is not known nd is shown by n r = k The rte constnt cn be determined using the CET MkII Tubulr Rector. We cn show tht kt X µ = (for second order rection) X From this eqution it cn be seen tht plot of line of slope k µ. X X ginst time t will give stright If the inlet concentrtion µ is known, k cn be determined. The rection:- NOH + CH 3 COOC 2 H 5 CH 3 COON + C 2 H 5 OH Sodium Hydroxide + Ethyl Acette Sodium Acette + Ethyl Alcohol cn be considered equi-molr nd first order with respect to both sodium hydroxide nd ethyl cette i.e. second order overll, within the limits of concentrtion ( -.M) nd temperture (2-4 C) studied. The rection crried out in Continuous Stirred Tnk Rector or Tubulr Rector eventully reches stedy stte when certin mount of conversion of the strting regents hs tken plce. The stedy stte conditions will vry depending on concentrtion of regents, flowrte, volume of rector nd temperture of rection. 7

20 METHOD Mke up 5. litre btches of.m sodium hydroxide nd.m ethyl cette. IMPORTANT: It is essentil when hndling these chemicls to wer protective clothing, gloves nd sfety spectcles. Remove the lids of the regent vessels nd crefully fill with the regents to level pproximtely 5mm from the top. Refit the lids. Adjust the set point of the temperture controller to 25 C. As the experiment involves the collection nd storge of conductivity dt, the dt output port in the console must be connected to the Armfield IFD dt logger nd the computer s detiled in the instruction leflet supplied with the interfce. This will enble dt logging of the conductivity t selected time intervls over selected period. If computer is not vilble then the conductivity cn be recorded mnully t hlf minute intervls, by reding the vlue directly from the conductivity meter in the console. Ensure the conductivity probe nd temperture sensor hve been instlled in ccordnce with the section CONNECTION TO SERVICES. Collection of dt will be until stedy stte condition is reched in the rector nd this tkes pproximtely 3 minutes. It is dvisble to set the dt collection period to, sy, 45 minutes. Using the clibrtion grph for ech of the feed pumps, set the pump speed controls to give 8 ml/min flowrte for ech rectnt (F = F b = 8ml/min =.33 x -3 dm 3 /sec.) Prior to priming the hot wter circulting pump, fill the rector with cold wter. To fill the vessel, it is necessry to pinch together the wlls of the tubing connecting the overflow to the hot wter circultor, either mnully by bending nd holding the tube or using suitble clip (ensuring tht ny clip used will not cuse dmge to the tubing). Fill the vessel to level bove the overflow (return to the circultor), just below the rector lid, using suitble hose from domestic supply through the temperture sensor glnd (8) in the lid. A non-return vlve () prevents wter flowing out of the rector vi the inlet. Ensure the temperture sensor is re-fitted nd the glnd tightened securely by hnd before relesing the outlet tubing. Prime the pump s detiled in the OPERATIONAL PROCEDURES section of the CEX mnul. Switch on the hot wter circultor. The temperture of the wter in the rector vessel will begin to rise nd will be utomticlly mintined t the desired set-point (25 o C in this instnce). 8

21 Switch on both feed pumps nd instigte the dt logger progrm (or begin tking redings if no computer is being used). Rectnts will flow from both feed vessels nd enter the rector through the connections in the lid. Ech rectnt psses through pre-het coils submerged in the wter in which they re individully brought up to the rection temperture. At the bse of the tubulr rector coil, the rectnts re mixed together in "T" connection nd begin to pss through the coil. The recting solution will emerge from the coil through connector (6) in the lid where probe senses continuously the conductivity which is relted to degree of conversion. It hs been determined tht the degree of conversion of the regents ffects the conductivity of the rector contents so tht recording the conductivity with respect to time using the Armfield Dt Logger cn be used to clculte the mount of conversion. INTERPRETATION OF RESULTS The conductivity mesurements must now be trnslted into degree of conversion of the constituents. Both sodium hydroxide nd sodium cette contribute conductnce to the rection solution whilst ethyl cette nd ethyl lcohol do not. The conductivity of sodium hydroxide solution t given concentrtion nd temperture however, is not the sme s tht of sodium cette solution t the sme molrity nd temperture nd reltionship hs been estblished llowing conversion to be inferred from conductivity:- The clcultions re best crried out using spredsheet such s EXCEL so tht the results cn be displyed in tbulr nd grphicl form. On conclusion of the experiment using the Armfield dt logger, set of redings of conductivity with time will be stored in the computer. At this point, this dt cn be trnsferred onto the spredsheet. Strt the spredsheet progrm. Now enter the following known constnts from the experiment using the Nomenclture list on pge C2. Ensure use of correct units. F = F b = µ = b µ = c µ = T = V = 9

22 Using the spredsheet, clculte the vlues of o, b o, c,, Λ c, Λ o, Λ, Λ o nd Λ from the following formule:- F = µ F + F b = F F b b + F b b µ c = b o for b o < o c = o for b o o Λ c =.7[+.284(T-294)] c for T 294 Λ o =.95[+.84(T-294)] o for T 294 Λ o = Λ o ssumes c o = = for o < b o = ( o b o ) for o b o Λ =.95[+.84(T-294)] if Λ = Λ c + Λ For the vlues of ech of the bove, the spredsheet cn be used to clculte vlues of sodium hydroxide concentrtion ( ) nd sodium cette concentrtion (c ) nd the degree of conversion (X ) nd (X c ) for ech of the smples of conductivity tken over the period of the experiment. These cn be clculted nd listed in columns (use spredsheet COPY fcility) longside the redings of conductivity using the following equtions:- Λ Λ + ( ) = Λ Λ Λ Λ c = c, for c = Λ Λ X = c X c = c, for c = To clculte the specific rte constnt, k:- 2

23 The overll mss blnce t stedy-stte condition my be written s:- Input Output ± Rection = i.e. for rectnt in rector of volume V d ( V ) 2 dt = F F V k For the continuous rector operting t stedy stte the volume my be ssumed constnt nd k ( F + F ) b ( ) = 2 2 V F = mol/dm 3 sec V The stedy stte concentrtion of NOH in the rector my be used to clculte the specific rte constnt k. Comment upon the results obtined. Notes:. It is recommended tht this experiment should be repeted t vrious other tempertures to investigte the reltionship between the specific rte constnt (k) nd the temperture of rection. 2. It is further recommended tht the experiment be repeted using dissimilr flow rtes for the custic sod nd ethyl cette solutions to investigte the effect tht this will hve upon the sponifiction process. Rinse the feed tnks with deminerlised wter nd pump the wter through the rector to rinse out the chemicls. The rector cn be left with wter in the coil redy for the next experiment. When removing the CET rector from the service unit lwys drin using the drin vlve under the bseplte first. 2

24 5.2 EXPERIMENT B To investigte the effect of throughput on conversion THEORY For tubulr rector, the mss blnce for rectnt is represented by d AL = r F For the rection between ethyl cette nd sodium hydroxide, it is equi-molr nd is second order in nture, thus r = k b where k is the kinetic rte constnt. Arrnging for initil concentrtions of nd b to be equl r = k 2 d = 2 k AL F Integrting, = k t R AL = t the residence time R F Frctionl conversion, X = Therefore, k t R X = X X Thus the conversion fctor X constnt rection tempertures (T). is directly proportionl to t R the residence time for 22

25 METHOD The experimentl procedure is identicl to tht of Experiment A with the exception tht flow rtes of rectnts cn be vried to chnge the residence time of the rectnts in the rector. Clculte the degree of conversion of the rectnts t stedy stte using conductivity redings (from dt logger nd spredsheet s described in Experiment A) for different vlues of F nd F b. Experiment A used flows of 8 ml/min so it is suggested tht flows X of 4 ml/min nd 6 ml/min re used for this experiment. Plot t R ginst. X Comment on the grph obtined. 23

26 5.3 EXPERIMENT C To demonstrte the temperture dependence of the rection nd the rte constnt THEORY The rte of rection s chrcterised by its rte constnt k is strongly temperture dependent. This is generlly expressed s the Arrhenius eqution:- E RT k = Ae ( where E (ctivtion energy [J/mol]) nd R (gs constnt [J/mol.K]) re constnts, T [K] is the rection temperture nd Ă - frequency fctor. Therefore, ( lnk = lna - E RT A logrithmic plot of k vs. /T will give stright line. METHOD The procedure will be identicl to tht of Experiment A with the exception tht the rection will be crried out t different rector tempertures. Experiment A ws crried out t 25 o C. It is suggested tht the rection be crried out t minimum of two further settings, sy, 2 o C nd 3 o C in order to plot the grph. Plot /T vs. ln k nd comment on the grph obtined. 24

27 6. NOMENCLATURE A cross sectionl re of tubulr rector (cm 2 ) µ sodium hydroxide conc. in feed vessel (mol/dm 3 ) o sodium hydroxide conc. in mixed feed (mol/dm 3 ) sodium hydroxide conc. in rector t time t (mol/dm 3 ) sodium hydroxide conc. in rector fter time (mol/dm 3 ) b ethyl cette conc. (mol/dm 3 ) (sme subscripts s bove for ) c sodium cette conc. (mol/dm 3 ) (sme subscripts s bove for ) F totl volume feed rte (dm 3 /s) F volumetric feed rte of sodium hydroxide (dm 3 /s) F b volumetric feed rte of ethyl cette (dm 3 /s) k specific rte constnt L overll length of tubulr rector (cm) r rection rte t R residence time (s) t elpsed time (s) T rector temperture (K) V volume of rector (dm 3 ) X conversion of sodium hydroxide = X c conversion to sodium cette = c c c Λ conductivity (Siemens/cm) Λ o initil conductivity Λ conductivity t time t Λ conductivity fter time Λ sodium hydroxide conductivity sodium cette conductivity Λ c Ă Arrhenius frequency fctor E ctivtion energy (J/mol) R gs constnt (J/mol K) 25

28 ROUTINE MAINTENANCE To preserve the life nd efficient opertion of the equipment it is importnt tht the equipment is properly mintined. Regulr mintennce of the equipment is the responsibility of the end user nd must be performed by qulified personnel who understnd the opertion of the equipment. 6. Generl The equipment should be disconnected from the electricl supply when not in use. After use the feed tnks, rector vessel, sump try nd pipework should be wshed through with wter to remove chemicl residues, nd then drined. 6.2 RCD test Test the RCD by pressing the TEST button t lest once month. If the RCD button does not trip when the Test button is pressed then the equipment must not be used nd should be checked by competent electricin. 6.3 Clibrtion of the conductivity sensor The conductivity conditioning circuit (which provides the reding from the conductivity probe supplied with the CEX service unit) is locted on printed circuit bord inside the electricl console. This circuit is clibrted before disptch nd should not require reclibrtion. However, should re-clibrtion become necessry the pproprite clibrtion potentiometers cn be locted using the digrm given in the CEX mnul (Routine Mintennce). Ensure the equipment hs been connected to the electricl supply nd switched on for t lest 2 minutes. To ccess the PCB remove the front pnel from the electricl console by removing the four fixing screws. It is not necessry to detch the PCB from the front pnel. Disconnect the conductivity probe from the socket t the left-hnd side of the electricl console. Connect n AC Voltmeter (Rnge AC mv) to pins nd 2 of the vcnt socket nd djust potentiometer VR2 on the PCB to give reding of 5 mv (RMS) on the Voltmeter (probe excittion voltge). Disconnect the Voltmeter then reconnect the probe to the pproprite socket hving removed the probe from the pproprite rector fitted to the CEX. Fill smll beker with Conductivity Stndrd (e.g..m KCI giving conductivity of 2.88 ms t 25 C) nd mesure the temperture of the Stndrd using suitble thermometer. From the tble supplied with the Stndrd determine the ctul conductivity of the solution t the mesured temperture. Immerse the probe into the Conductivity Stndrd in the beker then djust potentiometer VRC to give reding on the disply to mtch the conductivity of the Stndrd solution. 26

29 When the conditioning circuit hs been re-clibrted, replce the front pnel of the electricl console nd re-instll the probe in the pproprite rector on the CEX service unit. 27

30 INPUT A.C. ~ CET TUBULAR REACTOR 7. APPENDIX: CET/CEX INSTALLATION GUIDE MOUNTING THE FEED VESSEL ASSEMBLY Fit the regent vessel ssembly to the CEX using the 4 locting studs nd blck hnd nuts Locting studs nd fsteners Connect the tubing on the left hnd side of ech of the two feed pumps to the stndpipe locted in ech of the regent vessels. (Left feed pump to front vessel, right feed pump to rer vessel) 2 MOUNTING THE HOT WATER CIRCULATOR (HWC) Rer view of CEX showing positioning of HWC Hoses on the HWC should be orientted s shown in the digrm OUTPUT A.C. ~ A MAX R.C.C.B O/P PUMP HEAT MAINS INPUT 24V/PH/5HZ~ CIRCULATOR STIRRER D.C. O/P The led from the HWC plugs into the socket indicted. Crefully line up the pins in the plug with the socket. Once connected rotte the locking collr on the plug until it clicks into position 28

31 out TEMPERATURE CONTROL le CONDUCTIVITY ms HEAT CHILL MTW SOL. DATA O/P out le TEMPERATURE CONTROL CONDUCTIVITY ms HEAT CHILL MTW SOL. DATA O/P CET TUBULAR REACTOR 3 MOUNTING THE CET MKII ONTO THE CEX FRONT VESSEL REAR VESSEL TEMPERATURE PROBE AT REAR CEX rmfield CHEMICAL REACTOR SERVICE UNIT TEMP COND CEB (OPTION) 4 CONNECTION TO ELECTRICITY SUPPLY C - Fit the CET MkII ssembly to the CEX using the 4 locting studs nd blck thumbnuts. Position the rector is on the left hnd side of the rector towrds the rer. - Connect the remining two pipes from the feed pumps to the connectors on lid of the rector s shown. - Connect the conductivity probe nd temperture sensor plugs to the sockets on the left hnd edge of the control console. - Fit the conductivity sensor into the housing on the top of the rector s shown. The temperture sensor fits into glnd on the rector lid. In both cses the glnd nut should be loosened to fit the probes nd then tightened to secure them. Probes should be inserted fully so tht they re submerged nd flow holes in the conductivity probe glss should be positioned so tht liquid flows through. Check tht the voltge specified on the equipment mtches the supply voltge. NOTE: this unit MUST be erthed. Brown - Live (hot) Blue - Neutrl (hot) Green/yellow - Erth (ground) Ensure tht circuit brekers nd RCCD re ON (up) C OUTPUT A.C. ~ A MAX rmfield Ensure Mins Switch is OFF INPUT A.C. ~ R.C.C.B O/P PUMP HEAT MAINS INPUT 24V/PH/5HZ~ CIRCULATOR STIRRER D.C. O/P 29

32 IFD6INTERFACE CONSOLE o I MAINS o I SOCKET POWER V 2A~ WARNING SOCKET 2 POWER 24V 2A~ 24V~ o I out TEMPERATURE CONTROL le CONDUCTIVIT Y ms HEAT CHILL MTW CHEMICAL REACTOR SERVICE UNIT C SOL. DATA O/P CET TUBULAR REACTOR 5 PRIMING THE HOT WATER CIRCULATOR Priming vessel Suction pipe - Connect suction pipe of the HWC to cold wter supply (preferbly deionised). - Switch on the mins switch on the front of the CEX. - Adjust the temperture controller set-point to temperture below mbient (see Opertion instructions overlef). - Then switch on the pump switch t the side of the temperture controller. 6 CONNECTING THE HWC TO CET MKII 7 CONNECTING TO THE DATA LOGGER (OPTION) Ch2 Ch3 Ch4 Ch rmfield Connect inlet pipe () to here 2 - Connect suction pipe of the HWC () to the overflow pipe mounted high on the side of the rector - Connect the supply pipe of the HWC (2) to the nonreturn vlve mounted low down on the left rer side of the rector. - Pinch the wlls of the HWC supply pipe (either mnully or with clip) to prevent wter exiting from the overflow. - Fill the rector with wter (preferbly deionised) using the fill plug on the top plte of the rector. Refit the plug nd then relese the HWC supply pipe to llow free flow. - Turn on the mins switch nd then the pump switch nd refill the HWC expnsion tnk s required. Connect outlet pipe (2) to here CEX rmfield - The IFD is powered by from the mins outlet on the rer of the CEX. - Connect chnnels s shown. Stirrer chnnl unused with this rector configurton 3