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TEST REPORT NO. 74-38 STRIPPING VINYL CHLORIDE FROM A LATEX SOLUTION June 2] , 1974 SUMMARY This product appears to be an excellent application for the Luwa Evaporator. Suggested conditions are: Feed: Heat: 40 lbs/hr/sq. ft. 130F Vacuum: 70 mm Hg. abs. RSV 0017943 TO iM f IH T [* C * f O f t x o u io - J l C C O M O ON U IO .o n a n t LUWA CORPORATION CHARLOTTE, N. C. LAY-OUT OF TEST PLANT TEST NO. 74-38 DATE 6-21-74 PAGE 2 OF 9 F- TEST UNIT: L-82/50/20, size 1.4 square feet on Glycol Lubrication upper seal: water; Lower Gearing: roller Auxiliary Equipment Specifications: Feed From: Original Container Feed Pump: Piston Diaphram pump with in line back pressure valve Demister: 12_ inch diameter pot with 4 inch York pad Condenser: Shell and Tube size 15.5 sq. ft. cooled with water Steam Ejector: 3 s tages 20 mm Hg. abs. Material of Construction: 316 Stainless Steel Method of Measuring: Instruments and Controls Feed Rate By: Time-weight, Pump Speed Bottoms: Time-weight Disti1 late: Time-weight Operating Pressure: HG-U-Tube monometerft2 Process Temperatures: Thermocouples and Automatic Controls Used For: Glycol, thermomete rs vacuum. Remarks 1 T, - Feed r2 - Bottoms T ^ - Vapor T^ - heat P - Pressure > -/ \ t\ (I,- . >'AiL A A i l'! 'M RSV 0017944 DWC NO LUWA CORPORATION CHARLOTTE. N. C. OBJECTIVE TEST PERFORMANCE TFSTNO. 74-38 OATE 6-21-74 PACE 3 ..OF 9 F-3 Test Objective: To strip VCM to less than or equal to 1 PPM Test Performance: Using a piston diaphram pump equipped with a back pressure valve, the feed was metered into the Luwa Evaporator direclty from the feed container. In the evaporator, the feed was distributed by the feed distribution ring. The product then flowed down the thermal surface while under under constant agita tion of the rotor. The stripped product was discharged into evacuated glass receivers. The vapors traveled counter-current and were condensed in a she 11 and tube condenser which_was cooled with cooling tower water. The condensed vapors were discharged into evacuated glass receivers. A vacuum of approx imately 70 inm Hg. abs. was used to promote distillation. Glycol temperature measured with in line thermometers. All other temperatures were measured by thermocouples and the absolute pressure by a Mercury "IP Tube Manometer. A test "run" was made by timing the rate of flow of the bottoms and the distiilo; and recording all temperatures and other variables during a specific time period. Samples were taken and Tabled appropriately. c DATE o RSV 0017945 PW. MO anv m w ro tg o tT i iM cw r*L to thc in ic h e s t o r ~si ^ j 0s LUWA CORPORATION CHARLOTTE. N. C. RUN NO. IIIO ll( . orrH j mu'. ,i HHrkuTIrHC It*l*./.MM...' ! UU HC. i < ii .; l'H:l Mjiutn- itumj lE$r NO. . _jn - ; DATE PACE ' . .. OF a. 1 is. y 67 135 Test start-up 2/6 ig o 67 U'0 All concJi t-.ion? constant 6 7" 2 Var.-inn *e;d 'ate :?n~ foaming at hinh f**aLo 7/9 65.5 67 1 :o increased J,eat varied feed rate- 45.3 133 rotor pulled thin coat latex on rotor and thermal surface. 10/11 67 115 Clean unit varied feed rate. F- 12/16 5C- 1 77. 1 67 1 , 1*50 45.0 67 145 `aried heat and feed to o'ota;n in;, JH. Thin coat latex f?n>wd during this time possible at higher heat temperature. High heat, low feed, 10.3% 0" pulled rotor latex plating -out. OATE BY: RSV 0017946 OWO. NO. P I H Q U L O M O T C O * IC O om U S tO M A M T P U f t r Q S f 0 ( T lk < [ M T A L T O T M f LUWA CORPORATION CHARLOTTE, N. C. %mo on*. HEATING RUN RATE MESS. 7Mf. NO. n. rt. OH 18.9 67 135 11.5 TABULATED RESULTS /CM REMARKS 0.5 Good TEST NO_ _ _ _ _7_4_-_38,,_ _ _ DATE 6-21^74 PAGE --5____OF___ t 19.9 67 33.18 67 44.85 67 55.28 67 67.2 67 118 120 120 120 120 8.0 0.5 6.4 0.5 4.45 0.5 3.11 1.5 1.8 3.0 Good Good Good 66.5 67 130 5.75- 0.4 55.14 67 45.35 67 130 130 5.5 0.5 8.5 0.5 10 33.6 67 115 2.2 11 44.36 67 115 0.9 8.0 12 68.1 67 130 3.5 1.3 13 74.0 67 135 3.46 2.8 14 78.86 67 140 4.3 1.3 15 78.4 67 152 7.1 4.0 16 77.1 67 160 7.2 1.3 17 45.0 67 145 10.3 0.5 Good Good Good No results listed Good FEED - 180 PPM F-30 RSV 0017947 BV DWG. NO. LUWA CORPORATION CHARLOTTE, N.C. 7v.V KNEAD vs. lbVhfVsq.-f't-FEED TEST NO *'4- -- "s'* DATF PAGE f'X <& OF ) osymbol fiLA7 y no -- ns \Ct \i\ / r\ \ M6 -- 125 / *1 V iLSS-Jin": aa - \ sf' \ A J3 ... MA> 1 ! M-; /( 0 0 fcj N 0 ,\ \ \ '7 0\ \' o c o -- u LJ : \ -\ : \\0 \ \ \ <7- V a \/ I 1. \ \ \ \ j-- r-'* O-- <r r 1 ; I'i 1 f N. r N o .S) 1 T-Jl RSV 0017948 00- Of) or ' * ` ''T-- 00 ___ 4.0 ........ T" -6,0 %> 0Vh.KM;A0 3.0 10.0 12.0 IUWA CORPORATION CHARLOTTE. N. C. PRODUCT HANDLING EQUIPMENT PERFORMANCE RESULTS *= TEST NO. ..._Z!i38____ DATE Gt.21-7_ _ page . .' or 9 Pro due t Hand! i n_y The latex formed a thin film on the thermal surface and the surface of the rotor. No other problems were encountered. E_qu_ipment Performance All equipment performed satisfactorily. Results The content of vinyl chloride was brought to less than one part per million in runs numbers 1,2, 3, 4, 7, 8, 9, and 17 from a feed content of 180 parts per million vinyl chloride. OATC RSV 0017949 DWG NO LUWA CORPORATION CHARLOTTE, N. C. COMCLUS I OHS * IESTNO. : __ DATE _ page ' . Of .1 Conclusions This appears to be an excellent application for the Luv/a Evaporator. Coating of thermal surfaces 'may be corrected by Feeding the unit while . at an ambient temperature and then applying the appropriate heat with regard to feed rate and vacuum. The data obtained so far indicates that acceptable results would be obtained under the following conditions. FEED: 30 tQ 50 Ibs./hr./sq. ft. HEAT: 130F VACUUM: 70 nun llg-: abs . ; {/James F. Pauley, Jr^ Tes-t .Engineer n*TC RSV 0017950 DW'i NO 1 +-% IUWA CORPORATION LUWd CMAXlOTTE, N. C. s ij-rI.*If-."-'3sni.ii.sp...cs) *im:.|r.<n0* fc*iu**.O*t u'Ct"O'd*vlt**OC.loCli"'U}HINo`i"/iOin6 Tes t ..ngth, Run of Run NO. Min. PRODUCT 1 6 Latex 26 36 PROCESS Stripping YCM . . PROCESS DATA FLOW RATES LfiS./IIR. FEED 80TTS 0IST, i OH PRESSURES mm Hg VAC TEMPERATURES F Alii F FEED R0TTS VAPOR HEAT 26.5 23.5 UL JUl .67 _ 27.9 25.6 2.3 8.0 47.3 44.3 3.0 6.4 - Jig___ 1?0 85 115 85 120 115 115 115 135 118 120 46 5 i6 6 6|' 7 6< 62.8 60.5 2.8 4.4! " 77.4 75.4 2.4 3.1 it 94.1 92.4 1.7 1.8 M 93.8 B8.4 5.4 5.7: 67 85 118 118 120 85 118 118 120 85 118 118 120 85 120 120 130 86 9 ;* 10 6 U6 12 5 77.2 73.9 4.3 5.5 n 63.S 58.1 5.4 8.5 it 47.1 46.1 1.0 2.2 n 62.1 61.5 0.6 0.9 95.36 91.5 3.36 3.5 85 120 no 130 131 35 118 120 m 88 113 118 115 90 120 118 115 95 122 110 130 * 13 5 14 3 15 3 16 3 17 6 U c/> < o o --si tmo .03.6 100.0 3.6 3.4 67 no.4 105.6 4.8 4.3 ,09.8 102.0 7.8 7.1 .08.0 102.2 7.8 7.2 63.0 56.5 6.5 10.3 ir 90 119 120 135 90 120 118 140 90 120 120 152 90 120 120 160 90 120 120 145 RTR. RTC 5PD. RING PUMP RPM MM SET 2300 10 M 10 II - 15 H 19 H 23 - - _ 27 2300 27 .. 23 - - . - 19 - - - 15 II ^ 19 27 2300 29 II - _ _ 31 | ... 31 II ^ _ 31 " ... 19 TFST NO. OATF PAGE 9...OF 9 Runnlna well OK - Increase feed * II H fl M ll N Some foaming In bottoms recefvi Increase heat suspect coating thermal surface flushed unit with viator foaming gone. Pulled rotor thl? ' coa-. Restart - unit cleaned Increase feed, raise heat Increase feed increase heat II <i u Decrease heat for next run ! Dropped feed rate Pulled rotor before flush Thin coat latex j. v/ j L,J CORPORATE Engineering DEPARTMENT 0 r/n /; 5/ c sf. Ft / ~.r * // f * ' ' <J .*7 ' /' ................. * "r- / ' ; - / * *** /* ... - - A-1 ft . ^CCA NO. AREA NO. BY /C / - -' -- " ^ ' GATE ' ' ?^JNFFT / 0 TAZtB JgL 'EEWjM/I >JAJT T>t Co mmo; ci-'l tff-t Unit . i/^-z CJA-LS pilot ruitt It h * t l>j Or# >v\ Pilot Pf* Unit > P. Diameter nf top Height of straight s idc Height of Cone it 5 A I O, 75'fl | / . *ft? ! *r.JO i.pi 3.7? h $1 U. 7f l.oS I, o*l Tots I he igirt S, 1 2. 7^ LoH Diameter rotor 1.0-1 Zst'Z o,c>.&n 0, 067 Height of slotted surface o,\i< <7. IS l o. ozSH 0, OtS\ Hot or firm nxo 11 SO s-'iPO, ? t O O / V Or RSV 0017952 ES-7 Rv. 1/7'l Iiu . --- V*^ ; Ar'U-- .,"4 Pe,\'MA ',A ZrCo ".*. <'.; l fsj Poi^ ; *v"r t u N i* /~N vJorcnix T? e^~/vcrcikJ TCFC. A\jaila^lC 0\j-rutrv t <l , ^~rn IP ** ^) CoOt^\P?i-E Z ICiJT *ir Au. AJ_tO AOAiuA^i-R; E.CCOMMCJOi:C ^0^2- H\JCV V-ATTTL A LTTTl t, Aj AT V F \ T' VA d' ^ W* 1LQ ^ V. 1C Vaw%. *? v\* yv\ f( i A \w it ^ RSV 0017953