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GLYCOL DEHYDRATOR BTEX AND VOC EMISSIONS TESTING RESULTS AT TWO UNITS IN TEXAS AND LOUISIANA VOL. II: APPENDICES
Rueter, C., D. Reif, AND D. Myers. GLYCOL DEHYDRATOR BTEX AND VOC EMISSIONS TESTING RESULTS AT TWO UNITS IN TEXAS AND LOUISIANA VOL. II: APPENDICES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-95/046b (NTIS PB95-194148), 1999.
The report gives results of the collection of emissions test data st two triethylene glycol units to provide data for the comparison to GRI-GLYCalc, a computer program developed to estimate emissions from glycol dehydrators. [NOTE: Glycol dehydrators are used in the natural gas industry to remove water from natural gas and, in the process, may remove and emit significant quantities of benzene, toluene, ethylbenzene, and xylenes (BTEX).] Three analytical technoques were used to determine emissions: total capture condensation, pressurized glycol cylinders, and atmospheric rich/lean glycol sampling. Site 1 test results yielded BTEX emission estimates that agreed reasonably well. Total volatile organic compound (VOC) emissions from the two glycol methods did not match well with the total capture benchmark results; this is consistent with previous results for systems without flash tanks. Site 2 atmospheric rich/lean glycol and pressirized glycol emission results agred closely with the total capture results for bot BTEX and total VOCs. GRI-GLYCalc predictions using natural gas samples taken before the glycol absorber agreed well with the total capture results for total BTEX emissions.