Document 0JKv6bYyVQ3bJGGYeL67pdLBJ

UNION CARBIDE CORPORATION p. o. box 47 1 . TEXAS CITY. TEXAS 77530 HEALTH, SAFETY AND ENVIRONMENTAL AFFAIRS July 13, 1984 Mr. Cecil Bradford, Director Compliance Division Texas Air Control Board 6330 Highway 290 East Austin TX 78723 Mr. Allyn Davis Environmental Protection Agency, Reg. Air and Waste Management Division Interfirst Two Building 1201 Elm Street Dallas TX 75270 VI Subject: Gentlemen: Request for Change in Method of Compliance with Part 61, NESHAPS Regulation for Vinyl Chloride Monomer Control, Sources Following Vinyl Chloride Stripper Corrected Copy of TABLE IV, Original Letter dated May 25, 1984______________________ _______________________________________ Attached is a corrected version of Table IV for my original letter dated May 25, 1984. There was an inadvertent rearrangement of table headings that caused errors in understanding the information presented. Please replace the original page with the one attached to this letter. Sorry for the inconvenience. Very truly yours, r." F.Erdmann, P.E. Environmental Protection Coordinator P.S. Copies have been sent also to Mr. Clayton Smith, TACB/Austin and to MS Victoria Wang, TACB/Bellaire (Reg 7) bcc: See attached JFE:bdl TSVRVCM2 UCC 050904 k V Mr. Cecil Bradford Mr. Allyn Davis July 13, 1984 Bcci J. B. Leverton/S. J. Footer NESHAPS (VCM) File R. ,C. Wise - 500 G. F. Tacquard/S. A. Dickerson S. M. Norwood/D. R. Hall M. E. Eisenhour R. M. Arnold W. P. Nickles ucc 050905 TABLE IV SOLUTION VINYL RESINS PROCESS TYPICAL OPERATING PARAMETER VALUES Stripper No. Stripper Column Diameter, Inches I. Peed Rates "i STRIPPING STILLS 12 3 48 42 42 A. Varnish * Liquid *= E Lb/Hr Max Avg Min B. Solvent Vapor fc p Lb/Hr Max Avg Min 32,000 25,000 8,000 21,000 18,000 8,000 21,000 18,000 8,000 14,000 12,000 6,000 19,000 18,000 8,000 14,000 13,000 6,000 C. Ratio L/V = E / C Most likely operating ranges. II. III. IV. ' Max/Max Max/Avg Avg/Max Avg/Avg Avg/Min Min/Min 1.52 1.78 1.19 1.39 3.12 1.00 1.50 1.75 1.28 1.50 3.00 1.33 1.36 1.46 1.28 1.38 3.00 1.33 Still Columns, average base temperature: 63C, All Columns, +3 C, Solvent boils at 56C at 1 ATM. Still Columns, average base pressure: 2 psig. All Columns. ** Column differential pressures, base to head, inches of H20. Stripper 123 Diff. Press, Inches 30 70 70 o cr oo<o>o Oi? CORRECTED: 7/12/84 (JFE) 4 36 10,000 7,000 5,000 8,000 7,000 6,000 1.25 1.43 0.88 1.00 1.17 0.83 4 40