Document ybmrqOQanMErnky070wVmYM2X

90 2184 (Pn^ &oh- {PTP' 3^ -i,jj rJl/f <- J^iJ .NTER-OFF.CE MEMO TENNECO C H EIV!! C A L S, INC. --r- To DISTRIBUTION at From D. Goodman at Piscataway Subject NEW DEVICE TO REMOVE VCM FROM LOW CONCENTRATION EFFLUENT AIR STREAMS Date July 7, 1980 Copy to Avco Everett Research Laboratory, Inc, has an interesting prototype apparatus which is claimed to remove low concentrations of VCM from wet air streams. Avco's projected commercial intention is to manu facture and license a device to treat and remove VCM from dryer exhaust effluent streams in VCM and PVC production plants. Avco states that it would rather work directly with industrial companies than with EPA; however, there is an implied threat that they may choose to exploit their technology by demonstrating to government agencies that further improvements may be made in VCM removal with their process. In effect, that a "best available technology" exists for industry to continue to lower VCM effluents. Avco's process involves an electron beam radiation device which ionically attacks VCM selectively to yield "innocuous" byproducts. Avco is looking for a commercial PVC producer to undertake a joint pilot plant project to demonstrate the efficacy of this approach. A descrip tion of a recent presentation by them is attached to this memo. Avco estimates that there may be still lower allowable VCM emissions required from VCM and PVC manufacturing plants (e.g., 10 ppb at bound ary and bOg/hr. from source according to California AQB-1980). Carbon bed entrapment and incineration are claimed to be economical only for high concentration streams. Avco's "AERL" (electron beam radiation) removal may be significantly more economical at low concentrations. The Avco unit has been tested on lab streams containing from 3 to 500 ppm VCM in dry and wet air, nitrogen, and argon. The ionization products are HC1 (^70%) and^PVC. The system has not been tested for copolymer in which-there may be vinyl acetate monomer and trichloro ethylene present. The case is given on page 10 of the attachment that for an air flow of 50,000 cfm containing 5 ppm VCM in order to treat the effluent to reduce VCM to <0.1 ppm, an irradiation chamber 7;5' x 2' x 2* is required. Effluent residence time is 36 millisec at a gas velocity of 56 ft/sec, using 300 kV of electron beam voltage. The capital required is 5510^000^with annual costs of about $180,000 including power, mainte nance and 5 yr. amortization at 15%. If there is sufficient interest in this proposal. Dr. D. H. Douglas Hamilton of Avco would be available to make a more detailed presentation to us. His primary interest is to find a PVC producer who will join Avco in setting up a small production prototype. Please contact me if you would like such a meeting. DG/nm Attachment D. Goodman COLORITE 019423 D, Goodman NEW DEVICE TO REMOVE VCM FROM LOW CONCENTRATION EFFLUENT AIR STREAMS DISTRIBUTION: D. C. Coldiron H. R. Johnson F. S. Klopp P. A. Lobo R. S. Miller M. K. Rosen W. Rupp W .J vR. Sorenson% July 7, 1980 .1 COLORITE 019424 VINYL CHLORIDE REMOVAL D. H. Douglas-Hamilton May 30, 1980 AVCO EVERETT RESEARCH LABORATORY, INC. a Subsidiary of Avco Corporatio 238 5 Revere Beach Parkway Everett, Massachusetts 02149 * Patent Pending COLORITE 019425 O S H3 O IH U? n A ro a m m < m B m H AVCO EVERETT RESEARCH LABORATORY, INC. PERSONNEL : EXPERTISE CURRENT INTEREST: J5186 PhD LEVEL: 100 TOTAL : 700 GAS DYNAMICS LASER RESEARCH ELECTRICAL DISCHARGES IN GASES ATOMIC & MOLECULAR KINETICS MHD OPTICS HEART ASSIST BALLOON PUMP INDUSTRIAL LASERS APPLICATION OF OUR BACKGROUND IN PHYSICS TO SOLVING PROBLEMS IN INDUSTRY VINYL CHLORIDE MONOMER SOURCE: VCM AND PVC MANUFACTURE EMISSION LIMITS TO ATMOSPHERE : - EPA (1976) : 10 ppm AT STACK - CALIFORNIA AQB (1980) : 10 ppb AT BOUNDARY 50 g/hr FROM SOURCE CONVENTIONAL REMOVAL: - CARBON BED - INCINERATOR ) ECONOMICAL ONLY FOR HIGH CONCENTRATION AERL REMOVAL: - ION-CATALYSED DESTRUCTION ECONOMICAL ONLY FOR LOW CONCENTRATION *PATENT PENDING J5I84 -iJ7AVCO EVERETT COLORITE 019427  CARBON BED FLOW INPUT CONCENTRATION . < 500 cfm ~ 38,000 ppm VCM IN OUTPUT CONCENTRATION ~ 5 ppm VCM IN N2 RECOVERED PRODUCT 90% VCM AS VAPOR COST $293,000 FOR 50,000 cfm COST WOULD BE - $5M INCINERATOR FOR 50,000 cfm, ANNUAL FUEL COST WOULD BE ~ S5.5M J5I83 z^AVCO EVERETT COLORXTE 019428 DISCHARGE CELL* GAS INFLOW COLORITE 019429 N i n o jVl' m < m U m H GAS OUTLET "1 t ui n O s w ! n l U) O m < m H m H H VC REMOVAL vs DOSE FED. EPA LIMIT CALIF. EPA LIMIT S/N 081 REACTION PRODUCTS GAS: VCM IN N2 PRODUCTS: HCI : 50% - 75% \ POLYMERIZED . POWDER = > 1/o J5187 CHLORINATED HYDROCARBONS NEGLIGIBLE 4g V <Zs?/ NO MASS SPEC PEAKS DETECTED FOR M >63 COLOR!TE 019431 n m < m 33 m -t KINETIC EQUATIONS d [VC] dt = -k1 [e] [VC] y, IN+] [vc] . d [VC] dt = - [VC] ^ [e] + y1 [N*] ATTACHMENT AND CHARGE TRANSFER DOMINATE: le] = --------------------------------k1 [VC] + k2 [Cl] . [N+2] = ---------------------------------Xl [VC] + y2 [X] CONSERVATION OF MASS: [VC] + [Cl] = [VC]Q [VC] + [X] = [VC]Q ASSUME k1 = k2, y^ = y^ ; EQUATION REDUCES TO: d[VC] 2[VC] ------------ ~ - ------------- . s . dt fVC]0 HENCE: J5I90 [VC] [VC], = e _kD/'// WHERE [VC], -7- ^TAVCO EVERETT COLORITE 019432 EXPERIMENTAL RESULTS i. FOR INITIAL CONCENTRATION 3 < ^ < 500 ppm: VCM IS REMOVED FROM N2 DRY & WET AIR DRY & WET ARGON DRY 2. GAS TEMPERATURE RISE AT = 1 C FOR REMOVAL 5 ppm VCM 3. REACTION PRODUCTS : HCI ( ~ 70%) AND POLYMERIZED POWDER 4. FRACTION REMAINING AFTER D MEGARADS IS x = e -kD/'/' WHERE k = 269 ppm PER MEGARAD J 5189 -8- ZcAVCO EVERETT COLORITE 019433 SUMMARY 1. DEMONSTRATED ECONOMICAL PROCESS FOR REMOVING VCM IN LOW CONCENTRATION FROM LARGE FLOWS 2. DEMONSTRATED PREDICTABILITY FOR SCALE-UP OF PROCESS 3. PRELIMINARY COST ANALYSIS PERFORMED 4. POTENTIAL APPLICATIONS IN PVC PLANT DRIERS AND FUGITIVE EMISSIONS J5185 #PATENT PENDING t n o m < m U m H COLORITE 019434 EB INCINERATOR* IRRADIATION CELL ^AVCO EVERETT COLORITE 019435 REMOVAL OF VCM 1. POINT DESIGN AIR FLOW INPUT VCM OUTPUT VCM : : 50,000 cfm 5 ppm < 0.1 ppm 2. EBI SYSTEM IRRADIATION CHAMBER RESIDENCE TIME GAS VELOCITY EB VOLTAGE EB SHIELDING EB POWER : 7.5' x 2' x 2' 36 millisec 56 ft / sec 300 kV BUILT-IN LEAD LAYER 50 kW 3. COSTING CAPITAL $510,000 INCLUDING CHAMBER DUCTING EB SYSTEM SHIELDING CONTROLS ANNUAL $180,000 INCLUDING POWER MAINTENANCE AMORT. (5 YR,, 15%) NOTE: CAPITAL AND ANNUAL COSTS INCREASE AS LOGe [INPUT VCM] E.G.: FOR INPUT VCM = 50 ppm, COSTS INCREASE -2.6 TIMES J5188 -10- zffAVCOEVERETT COLORITE 019436