Operating Parameter Levels

Device Parameters to be monitored Established operating parameter(s) Scrubber pH of scrubber effluent; and scrubber liquid and gas flow rates Minimum pH; and minimum liquid/gas ratio Absorber Exit temperature of the absorbing liquid; and exit specific gravity of the absorbing liquid Maximum temperature; and maximum specific gravity Condenser Exit temperature Maximum temperature Carbon absorber Total regeneration steam or nitrogen flow, or pressure (gauge or absolute) a during carbon bed regeneration cycle; and temperature of the carbon bed after regeneration (and within 15 minutes of completing any cooling cycle(s)) Maximum flow or pressure; and maximum temperature Thermal incinerator Firebox temperature Minimum temperature Catalytic incinerator Temperature upstream and downstream of the catalyst bed Minimum upstream temperature; and minimum temperature difference across the catalyst bed Boiler or process heater Firebox temperature Minimum temperature Other devices (or as an alternate to the requirements previously presented in this table) b Organic HAP concentration level or reading at outlet of device Maximum organic HAP concentration or reading a 25 to 50 mm (absolute) is a common pressure level obtained by pressure swing absorbers. b Concentration is measured instead of an operating parameter.