Document p2Z32rGBZJMBZmeR0115o5gb6

A-VM,Coa:/--3* in A, Corner () PiT: FfC-PTS 3VEJECT: PXiTAL REPORT: xiriKO^aTiciT . February g, 1951 C.E.Hamlin R.K# rCfry V.?.Phillips u.L.^rivar M*W.^ilUci;r*s VJ.P.iiiliis A>P,Toj*rer.zaao Polyvinyl chloride heme; signer resin production from Buil&is^ 9 has been consistently finer ilex- that of BaiMins 8.* Sin-3c sever: of tl:p resin Trora Building gs i;-; finer than Cj^cificfifcAcoa allow, it la the cciitrlfos'2 offlnent and. inner cdscharge air streams * Subject P-Ilusber r-utfenieei a baffle position stud;/ in order to dotarnine the offset of a change in the a altation flow pattern on change right not prove to to adaptable to now products which are nor brans *davoXcpa&* The orpcrinanfal lino, in Building S3 was equipped with Building 92 typs baffles (tno large, upTxrd^doflooting fingora pee* baffle) * She SD? for SXitsntionai Opalon 34-3-1 was used for all the batches produced In this study, Throe' batches were made at a baffle outage of 75" and the baffle fingers perpendicular to flow. Those conditions gave maritems baffling with one finger per baffle completely submerged at static conditions and produced resin having an average ShF of 183. Pour batches were sia&a at a baffle outage of 4-9" and the baffle fingers In line with the flow pattern. This baffle arrangement gave minimum baffling 'with two fingers per baffle submerged at static conditions. Theca batches had an average SAP of 91. The other two baffle positions authorised Tor study (two fingers .submerged.., 49" outage., with fingers perpendicular to flow and a baffle cubage of 33 in* with fingers at a 4pw angle) 'were cancelled after water runs showed eucooslve baffle weave* .?. particle RSV0026387 '/ / Fag 3 , xfc lb cuestionable based on the limited data obtained whether the desired particle else could be mads without any sacrifice in eoitruslon quality, partner asporimentation would be needed to find the optimum baffle position, r?>ookmendatxows Xfc la recommended that the project be dropped due to the advanced timing or X-T5. fa baffles for this study were positioned at 4" or T5 " measured from'the top of' the baffle aossla to the sop of the baffle, on. the volume of a standard charge for Op >n 345*1, 3365 gallons, this represents a'baffle submergence of 5U above the tip of the top finger and 3" above the tip of the bottom finger respectively ,, it . was felt that this might give more reproducible data than having the fingers partially submerged at static conditions. Estimated effective baffling" areas based on a projected surface, area were calculated from blueprint data. M SAP raiigs of 163 - 192 was produced in three batches with only the bottom finger per baffle submerged and the finger direction perpen dicular to flow. This condition-represents an estimated effective baffling area of 30.2 sq. is. For the second sot of conditions, the top finger submerged, and finger direction in line with flow, an SAP range of 84-107 was produced in four batches. This baffle arrangement represents an estimated effec tive baffling ares of 222 sq. in. Decreasing the effective baffling area should'result in a coarsening of resin particle else. It must bo pointed out, however, that for tho same static outage the dynamic outages were different for the two baffle"conditions based on data obtained from water runs. The liquid level rose 8 1/2 in. from static to dynamic conditions when the baffles were positioned high in the kettle with the fingers perpendicular to flow. For the other baffle position tits rise was 13 in, This fact illustrates the different flow pattern obtained by changing the baffle position. In order to produce the desired SiU? range in Building 92, further experimental work is needed in order to determine the optimum baffle height'end finger direction. 2. EXTRUSION Extruded. ribbon grades were all average to poor with the exception of the first two batches which had a UB'} classification. Having only three batches in the first group [the fourth batch was dropped as the particle Else was too fine at the first baffle arrangamenth makes it possible to analyse that the third batch was just a poos-1 run causing a low grace cm extru&od ribbon. On studying all the data and batch charts, it was noticed that the first tv-o batches had .a 2C temperature spread for the first two hours and didn't stop cycling until after the RSV0026388 Pas 3 jrirot three hours. This v?as caused by the fact that the largo baffler: having a different temperature sensitivity had jest been installed in tbs kettle and the insbvivaants had net beer* sw-adjustsd to compensate for the different responds of the baffle therao-uell. 3. CYCLE TB-3E Cycle tin for the coarse batches was approximately one hour shorter than that for the fine hatches* Those batches were produced using a smaller effective baffling area and therefore less .mixing. Luring the polymer!satlen the difference between the irus reaction temperature of the resin particles and the measured terpamtero of the suspending medium would be greater than the batches produced with core mining* The coarse batches, therefore, wars produced at a higher reaction temperature which gave a correspondingly shorter cycle* it is assumed that the temperature cycling caused the slightly longer cycle for the first two batches. 4* TRAHSIATIOH STOUT Ths advanced timing of the new suspending system due-to the premising results of X~75 Las killed the justification for any farther work on this project. RSV0026389 BAFFIN STUDY APPENDIX X Vo lunio VCIS 0 50 C 1631 Hat? 50 C * 1535 3366 gal. Outage for 3366 gal - 24 In. dipstick from manhole Difference between manhole and top of baffle nozsle Hossis 8 in, higher than manhole measuring point. Dimensions Tip of top finger *= 54 in. from bottom of baffle.. Tip of bottom flags? 8 in. from 'bottom of baffle. Desired Submersion Static Conditions Distance Liquid to Nozzle Baffle Outage 59 in. 33 in. 24 in. * 8 in. 24 in. -t* 8 in. 49 In. 75 in. Projected Surface Area (Calculated from rfaudler blueprint ------ ; " SB-1376 2-16-55.) Fingers perpendicular to flow Fingers In line with flow Depth Surface Area Depth Surface Area 7 in. 28 33 54 59 14 in.2 82 302 570 590 7 in. 28 33 54 59 ` . 14 in.2 98 118 202 22 RSV0026390 Baffle Outage Finger Direction RPM~ Run Humber Batch Humber SAF <S' thru 100 Bulk Density Read. Dry 'Time Extrusion Hate Extrusion ras Cycle i'itss Vortex Data Static Outage iAmiie Outage Rise APPEI-HlDi OPALOS 3" '! -- 751' FarpG'i'ic> ocular 121 i 49 s1 in i2Li'i3 121 1 557X J-j.*7 L GO** 23 5692 577? " " T^" l"BTr l6p 81 1.92 bo ] * | .5 538x ! 594X 1 ......... 84 107 10 j T 6 60IX 87 9 All .440 .485 .462 .483 j. .459 10:00 6:00 _ 7:30 7:15 5:45 j 6:15 146 145 153 150 145 145 B B G G jF S IS: 5 12:14 11:45 10:45 ! 10:30 10:50 7 6c8x 87 12 .451 6:00 145 D 10:55 24 1>& ^Ta 16 in. 8 1^ in. 24 in 13 in 1 11 in RSV0026391