Document 4a76eBxJBOwZ5JBj1BG8wDYKV

NTER-OrriCE MEMO TENNECO CHEMICALS, INC. to W. Miringoff AT Burlington date June 27, 1975 from R.F. Fanter Subject PROCESS ENGINEERING REPORT June, 1975 at Flemington copy to H. B. Carr W.C, Champion R.S. Cole Dr, L, Gross J.W. McBroom P.R. Scarlto A,C. Siegel J.T. Sweeney J,J* Zulto P. Wi1 son L, Mederios J.W. Poarch Pilot Plant -Fleminqton A"Tile In response to the problems encountered at CBS with Flemington produced 315, the entire month was devoted to studying the problem and running specials in the plant. A comparison of Burlington and Flemington produced materials showed several differences and these were evaluated in the Flemington plant by running the following specials: Low R.V. A four batch blend with an R.V. of 1.52 was desired. Tie specials run were: 1. The polymerization temperature was raised 2F. on four consecuative batches, but the blend showed no change in R.V. 2. The polmerization temperature was raised 1F. and 20 extra pounds of TCE was added to the charge. The R.V. was as desired (1.52) but the entire lot became contaminated as it went through the dryer. 3. The polymerization temperature was raised 1F. and an additional 40 lbs. of TCE was added to the charge. This resulted in an R.V. of 1.52 and this material was sampled by CBS. The table below summarizes the trials. Temperature F. LBS. TCE R.V. Normal 157 ll^t 1.53-1.52 1 159 m 1 5^ 2 158 13*i 1.52 3 158 15* 1.52 COLORITE 010605 June 1975 Page 2 PPftXOI 9-5 Addition Because Firestone resin has a better heat stability than 315, trials were run incorporating Epoxol 9-5 in the resin in an effort to improve its heat stabi1 icy and thus hopefully its performance at C .S. Two methods of adding the Epoxol 9-5 were evaluated. 1. .75 pph of Epoxol 9-5 were added to a four batch blend of 315 and the material dried separately. The 400 lbs. of Epoxol were added by simply dumping bucketfuls of it through the blend tank manway. 2. After a checkout in the pilot plant, a batch incorporating .5 pph Epoxol 9-5 in the charge was made. The material was added to the water phase, after the gelatin and' LPO, but before the manway was closed. Samples from both trials were sent to CBS for evaluation. A/B Mixed Gelatin As a possible help in overcoming the CBS problem, a series of batches were made using a mixture of A/B type gelatin. This suspending system had been used previously for 315, but was discontinued in favor of a 100% type A system in > 197** due to supply difficulties. A single batch was made and when it checked out ok, three more batches were made and dried on top of the first. The lot was then sampled to CBS for evaluation. Ail of the above samples were evaluated by CBS and deemed "not'as good as normal Flemington material". In the meantime R. & D. had developed a "rower to Fusion" . test that seemed to show variations in materials we had previously not been able to separate. Based on this new analytical tool, the following trials were made: Burl ington vs Flemington V/ater CBS says Burlington and Flemiington material do not perform the same! Based on this and the fact that it had been noted the demineralizer was probably not puttjng out "in-spec" water a series of batches were made at Flemington using Burlington water. The.first shipments of water had to be discarded due to contamination from the transfer hoses and pump supplied by the trucking firm. The second series of batches was polymerized as planned, but one of the batches was made in a Reactor that had just been cleaned out after a set-up and it became contaminated with glass. This batch was blended with the others and the whole lot became contaminated. As of this date no decision has been made on repeating this test. COLORITE 010606 June, 1975 Page 3 A Cel at in Trials: Tests run on Flemington resin supplied through 80 mesh showed a lower "Power to Fusion", Also, tests showed the heat stabilizer content in compound is proportional to surface area. Based on these tests a number of agitation trials were run using an A/B gelatin mixture to determine if it was possible to develop an agitation system that would give a unimodel bead size. The combinations tried were: RPM Baffles 88 2 100 102 1&2 1&2 The data from these trials has-not been completly analyized yet, but preliminary results tend to show that a level increase in speed and number of baffles does not lead to a smaller and more consistant particle size. Set-Up Batches On Saturday, June 7, two batches of 315 set-up while running a Form #360-44, which - use only A type gelatin. A thorough investigation into all the ingrediants charged failed to show any positive reason for the set-up. Based on Process Engineering recommendation; the plant continued to charge 315 but with protective Colloid system composed of a 50/50 mixture of A/B type gelatin. Since the conversion to the A/B mixture there has been no more set-ups. ) D.I. Water Due to the set-up batches, a close look was taken at the Demineralized Water system. It was found that the Demineralizer normally supplysthe plant-with "out-of-spec." water (less than l ,00`0,000 ohms resistivity) in the range of 100,000 to 1,000,000 ohms resistivity. Based on this, a meeting was set up with Betz to review our water treatment program. As a result of the meeting, samples of our carbon and demineralizer beds were sent to Betz for analysis and Process Engineering will look at the entire water system in detail to determine if there is anything else that can be done to Insure a good consistant water supply for Flemington. /yt /fc 'yXZ-U (Kto) At.F. Fanter RFF:km COLOR!TE 010607 lame franter PROCESS ENGINEERING TIME SHEET ,'Wf June I, 1975 To June 30, 1975 P l Project Account Number ` Job Description Flemlngton Plant Support 1st Week | 2nd Week 3rd Week 4th Week 5th Week Totals 1 168 "t COLORITE 010608 ' Totals 168