Document zQ0O5X9rkp6jkaKrk0kDNaL4R

1-164 (SOM) INTER-OFFICE MEMO TENNECO CHEMICALS, INC. \ TO II. U. Carr From F.W. Kanzler At Burlington At Burlington SUBJLCT Oxygen Analysis of Recovery Compressors Reference: Memo to Route List from F.W. Kanzler dated March 25, 1971 daul January 15, 1973 y Copy Tg/File At <! The maintenance of low oxygen level (42,0%) in the recovered monomer gas at the compressor discharge is very important since higher oxygen levels may cause formation of peroxides. This peroxide build-up may, in turn, cause detonations in the compressor. Over the past three years, Analyti cal Control has monitored the oxygen levels in the recovery system of all three plants in Burlington. As a result of a meeting on March 25, 1971, the maximum allowable oxygen level was set at 2% with corrective action required when levels are found to be above 2%. This value was based on experience by Wacker Chemicals in their recovery system. During the past two weeks, the Plastisol compressors (#3 and #6) showed unusually high levels of oxygen (as high as 9.4% for #6, see Table I) on a daily basis without any apparent reduction resulting from corrective action. Based on this observation, oxygen analysis data was statistically treated to compare oxygen levels of compressors plant-to-plant and in the case of Plastisol Plant, to compare the two compressors used. Hie results were obtained from data starting July, 1972. Compressor #1 was chosen for Copolymer because of its higher oxygen levels when compared with compressor #2. Compressor #4 represents "typical oxygen values for both Homo polymer re covery compressors. It is noted that the mean for the suspension recovery compressors are below the 2% level, while the Plastisol recovery compressor #3 showed a mean of 2.1% and the #6 compressor an oxygen mean of 2.8%. The data indicates that a thorough investigation of the Plastisol recovery system is a necessity. Attachments (3). FWK/jt -Arid Vf. F.W. Kanzler COLORITE 014937 \ Date 1/1 1/2 1/3 1/4 1/5 1/6 1/7 1/8 1/9 1/10 1/11 TABLE 1 . #1 (Copolymer) Compressor #4 (Homopolymer #3 (Plastisol) #6 (Plastisol) 1.7 0.9 0.5 3.5 2.8 1.4 3.4 3.8 r 2.0 1.2 Down 0.2 0.7 1.8 Down Down 2.4 1.8 0.3 0.4 2.0 2.5 0.9 7.8 2.2 2.6 2.0 9.4 0.8 1.8 4.8 7.4 Down 1.3 5.0 5.8 Down 2.0 6.6 2,8 Down 0.5 4.4 4.6 COLORITE 014938 COIiORXTE 0 1 4 9 3 9 -1 >) ',,)/! l1 .) V `~t ? o nj` ^ IO X \0 TO ' 2 INCH llV'&J / X IIU'HF < 4G 13 20 `'ii I in >. 'i KEUFFEL ft LOSLN CO. c: t? H ? I! COLORITE 0X 4940 *>'t