Document 2RGrqeY9gwR0VMrowd7Xgzmj5

conoco Petrochemical Department Continental Oil Company V C M Plant P.0. Box 605 Westlake. Louisiana 70669 (318)882-0550 July 22, 1971 To: R.H. Gerlach Subject: Oxy Catalyst Recharge - June 1971 The three primary oxychlorination reactors were given to maintenance at 7:00 a.m., Monday, June 14. Water blasting and drilling of the tubes on R-302 and R-303 was completed by 6:00 p.ra., Thursday, June 17; R-301 was not completed until 6:00 p.m., Friday, June 18. At these times the catalyst support screens were bolted on and the tubes were then steam dried. Loading of R-302 and R-303 was started by midnight, Thursday, June 17; the loading of R-301 did not start until 7:00 p.m. on Friday, June 18 because of the difficulties encountered in cleaning it. Loading was complete on R-302 and R-303 by 1;00 a.m., Monday, June 21, for an elapsed time of 73 hours, while the loading of R-301 was complete at 5:00 a.m., Monday, June 21, for an elapsed time of 58 hours. The exceptionally fast loading time on R-301 was accomplished by using 10 men/shift thoughout the loading on this reactor; and, in addition, the best, most experienced loaders were used. Eight men were used on the other two reactors. Loading Details A. R-301 12.. 3. 4. .5. - 6 7. 1/2" Raschig Rings - 7" deep, 13 hours 100% catalyst - 26" deep, 10 hours 65% catalyst - 26" deep, 11 hours 45% catalyst - 26" deep, 10 hours 32% catalyst - 40" deep, 12 hours Silica - 19" deep, 1 hour Thermowell tubes, 1 hour B. R-302 .1. . 1/2" Raschig Rings - 7" deep, 18 hours 2 100% catalyst - 52" deep, 20 hours 3. 65% catalyst - 26" deep, 14-1/2 hours 4. 45% catalyst - 40" deep, 15-1/2 hours .5. Silica - 19" deep, 1 hour 6 Thermowell tubes, 1 hour CCR 000034294 C. R-303 1. 1/2" Raschig Rings - 7" deep, 23 hours 2. 100% catalyst - 91" deep, 21 hours 3. 90% catalyst - 12" deep, 10 hours 4. 100% catalyst - 15" deep, 11 hours 5. Silica - 19" deep, 1 hour 6. Thermowell tubes, 1 hour Special Comments Long delays were encountered at R-302 and R-303 because the catalyst retaining screens had to be welded in places to the reactor. This procedure caused a 6-7 hour delay in the recharging of these reactors. The welds are necessary because many of the screen support bolts are missing on these reactors. These bolts should be replaced during the next catalyst outage. No special tubes were loaded during this turnaround. Pressure drop measurements for the reactors are attached. An air flow rate of 14 on the rotameter was used to make these tests. This represents a 39.2 scfh actual flow at 80F. D.C. Skokna Process Engineer bs' cc: DOP-RDG-GTH-JDM-RWC %-L 2>:APPROVED : 'CCR 000034295 NOTE: One traverse from the center to the west edge along the centerline, measuring every third tube, was used to obtain the tube pressure drop on each reactor. The No, 1 tube is nearest the center. The pressure drops shown below are in inches of water. Pressure Drops - R-301 1. Thermowells NE NW SE SW Avg: 2. Tubes 1 2 3 4 5 6 7 8 10 11 12 13 Avg: Pressure Drops - R-302 1. Thermowells NE NW SE SW Avg: Spent Catalyst P >25" % Deviation - Missing - 10.6 26 low 18.0 26 high 14.3 Fresh Catalyst P % Deviation 4.2 1.9 low 4.8 12.1 high 4.2 1.9 low 4.4 2.8 high 4.6 7.5 high 4.2 1.9 low 4.2 1.9 low 4.2 1.9 low 4.1 4.2 low 4.2 1.9 low 4.1 4.2 low 4.2 1.9 low 4.3 0.5 high 4.28 Fresh Catalyst P % Deviation 4.1 3.8 high 3.7 6.3 low 4.3 8.9 high 3.7 6.3 low 3.95 Spent Catalyst P % Deviation 8.7 6.8 low 11.2 19.9 high >25" - 7.7 17.6 low 9.7 13.8 high 10.1 8.1 high 9.8 4.9 high 11.8 26.3 high >25" - 7.5 19.7 low 8.4 10.1 low 8.5 9.0 low -- 9.34 Spent Catalyst P % Deviation 23.0 18.9 high 14.6 24.4 low >25" - 20.4 5.5 high 19.3 Fresh Catalyst P % Deviation 4.0 28 low 3.2 43 low 3.6 36 low 11.8 111 high 5.6 \ 'CCR 000034296 2. Tubes 1 2 3 4 5 6 7 8 9 10 11 12 13 Avg: Pressure Drops - R-303 1. Thermowells NS NW SE SW Avg: 2. Tubes 1 2 3 4 5 6 7 8 9 10 11 12 13 Avg: Spent Catalyst p 13.4 % Deviation 26 high 8.5 20 low 9.4 11.5 low 10.8 1.5 high 12.0 12.8 high 11.4 7.2 high 11.2 5.3 high 10.8 1.5 high 8.9 16.2 low 8.9 16.2 low 10.1 4.9 low 12.1 13.8 high 10.6 Fresh Catalyst ,P % Deviation 4.9 10.4 high 4.3 3.2 low 4.5 1.4 high 4.2 5.4 low 4.3 3.2 low 4.6 3.6 high 4.3 3.2 low 4.3 3.2 low 4.4 0.9 low 4.6 3.6 high 4.6 3.6 high 4.3 3.2 low 4.4 0.9 low 4.3 Spent Catalyst P % Deviation >25" >25" >25" >25" >25" Spent Catalyst P % Deviation >25" >25" >25" 20.1 22.5 23.1 >25" >25" 24.7 >25" >25" >25" >25" >25" Fresh Catalyst P % Deviation 3.4 5.6 low 3.6 0 3.8 5.6 high 3.6 0 3.6 Fresh Catalyst P % Deviation 4.4 2.3 high 4.4 2.3 high 4.4 2.3 high 4.1 4.7 low 4.6 7.0 high 4.3 0 4.2 2.3 low 4.2 2.3 low 4.2 2.3 low 4.2 2.3 low 4.2 2.3 low 4.2 2.3 low 4.2 2.3 low 4.3 CCR 000034297