Document da6YDv85VYbqyJEn7kY7GkN26

B. F. GooJrltli dicmital Company lotBOtpniutioo Corrupaodcnce r? / 2 // 1b H. E. Barrett Locsttoa Louisville, Ky. !>* February 19, 1968 Wnm M. M. Doughty Louisville, Ky. VC1 Stripping Proa Qon 351 With a Rodney Hunt Introduction; 212" 1 In 1964 Oeon 351 latex wee successfully stripped on No. 2 RodneyHunt Evaporator in the Louisville Hycar Department. Evaluation of the Rofeey-Hunt for stripping Oeon Latex was not pursued at that tins because the Sontrifuge appeared to be a better Method. Because the Avon Lake Plant now states that the Sontrifuge is not effective, it is desired to activate the evaluation of a Rodney-Bunt for stripping VC1 froe Oeon Latex. Oeon 331 was stripped frow 0.26 to 0.040 Vinyl Chloride on January 17* 1968 on No. 2 Ro<toey-Bunt Evaporator (a No. 4) in the Hycar Dspartaent with jacket temperaturea frow 110* to 170*P at 300 gallons per hour feed rate. Latex used had been recovered in normal recovery strippers of Bldg. 121. Conclusions; The Rodney-Bunt Evaporator decreased residual VC1 fron 0.26 to 0.040 (chromatograph) with an increase in coagulua fron 0 to 0.60 greater than 0.43 u by millpore Filter. Particle else by Electron Microscope showed no significant differences for the control (.260 VCl) and latex stripped at jaoket te^eratures of 130 and 130 jP. Rape indatlont Continue investigation of the Rodney* Bunt Concentrator as secondary 'per fallowing initial recovery stripping. Evaluation can April 1, 19GB after a seoond paste concentrator has stripped to 0,260 VOX in B*121, by nornal recovery, --tripped on BO. f Rotoey-fent Evaporator in the Hycar ,it. Mast itm>1 VOX waa reduced to 0.040. ns evaluation waa_____ cot in xm aeries. The first series oansisted of 130, 140, and 150 110 160, m0 suggiiibud' sd *tfe Miter first asrles AX ___ 1 ftvM.__ ___ hi^sr millpore Piltsr data on ths first 1, nslthsr 0.6 nor 3.80 is sonsidsred high for Osen 351. V H. B. Barrett February 19# I960 -2- Prior to stripping, the latex was diluted to 49.7% and alkalinity Mas raised to 0.15P by addition of ammonia. Total solids of the oonoentrated product varied from 55.3 to 59*l and alkalinity from 0.08 to 0.100. The rate attained was 300 gallons per hour; 600 gallons per hour had been expeoted on this Rodney-Bunt (a Ho. 4). The cause of this reduced rate was heavy foam. The Rodney-Bunt vacuum dropped from 26.7 In. Hg to 28.0 In Hg. as jacket temperature was Increased from 110 to 170*F. With no foam carry over and only about 7 lbs. per hour of non oondensables (VC1) the change In vacuum la unexplained. However# the 26 in. Hg vacuum caused no particular problems. Acknowledgement Z would 11km to thank Lowell Grady for his cooperation In this evaluation. NNDkcIs-37-68 Distribution; L. 0. Crunkleton S. S. Michels P. A. Hmsr A. J. Oaboroe B. L. Beeler M. D. Assam L. A. tody 0. L. Mhaelock It. l. toller M. M. Doughty 20637002 o o o O O O H *? o* o *0 oo oooooo trI. tv* a * *, u * oooooooo a SS88888S a* oooooooo w 108*0< m m m vo m in ov 4* 8Sm ft inommomo in S8;|{ieiaSt lr {.<v>b-F4 H 0 CO <0 r 0PERAT1HQ AMP LABORATORY DATA l< *"* ' ----- -------- -- - ** 0 sfg gJi !? ' I8 0 ,}8mn a I Ol Ol W W Ol Ol Ol ^ II Ifj $sjp . ! . ** n h-. o. m"j m"i i It 5 c i i 5 *b * s * a I ft I..... s ais %si a " " " -- -'"W. 20637003 g i.^n REPORT HO. a Evaluation of the Rodney-Hunt Concentrator as a stripper Date: 4/21/69 and 4/22/69 Peed Latex: 351 froa storage, T.S. 55.6, % VC1* c.le. Kill!pore . 1.0 T.S. 50.2* 50.2* >.2* 50.2* 50.2* : 50.2* ifc* 40* *7* 47* Rate 390 0PH 4Ac OPH 5*0 GPH 340 OPH 560 OPH ; OPH 72-0 OPH 240 OPH 420 OPH 600 OPH 760 OPH Conditions Teap. Vacuum T.S. 110*F 130 *F 150 *F. 1.0*F. 110*? 155** 170 r 13C *P 150 *P 150j 190 *P 29" h* 55.8 F 'T 8* 26.7" ag 57.0 sg.g; 56.4 26.0 Hfe 20.8" % 28,6" % 53.0 Spec.Gr. 1.185 1.185 1.190 1.193 ' . 1? * - Or lil83 1.185 1.175 1.167 1.167 Results ** % VCl* { Miliipc: e .07 On .07 C.06 0.05 0.4 0.4 0.4 0.4 * By Chrowtograpfa * Mo More tests were run because of the lack of difference In data show. 20637004 26112 Autolgnltlon Cfntar 472.22 deg.C The ehueM of autolgnltlon tri vary renote la the Procaas Building. The critical point for steau la 3184 pal. at 374 dog. C.~aluost 100 dog. C. bolow tho autoIgaltton tauperatura of vinyl ehlorldo. topi ehlorldo la not wary toxic; It requires high coocontratlooa to cause death. Single exposures survived bp guinea pigs wore 3 to 7 vol.X In air for one hour and 2% vol.X for olght hours. The snriuu tlua-concentration for a aingle exposure without serloua dieturbanco was 1% vol.X for one hour and 0.5 vol.X fair eight hours. Man exposed to 2% vol.X for three nlnutes will bscoeu disap and disoriented. This ms also noted at 8400 ppu. (0.68 volX) for a 1/2 hour exposure bp non. The threshold odor Unit la 4100 ppu. pasted exposure of seta for seven hours/day, five deps/week at 900 ppu. Aowad increased liver weight, this test probably contributed to the setting of 900 ppu. as the. threshold'units of viapl chloride for continued exposure bp the doerlean Penforgers of Oowsrauantal Industrial Hygienists. 1 don't believe m are anywhere near tha 500 ppu. level la Bldg. 414, but pou cannot tell bp snail, since 41*10 ppu. is the threshold odor Unit. To be aura, I Orusbp is gslag to sell Ahron to have thou run sons viapl chloride vapor teats la Bldg. 414. Qhless m leant that the concentration exceeds 500 ppu. around Bidg.414,you can venting the uareacted vinyl chloride frou charges In Bldg.414. It is also worth no.'eg that ccubuatlon of vinyl chloride focus hydrochloric acid, eo burning vinyl chlor*4e creates even a worse pollutant. set B.J.Molf B^g. Bp leads B.W.OUbert 11