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Case Studies - Solutions in The Field
Chemical Processing
Situation
A major CPI facility was emitting a variety of VOCs and HAPS that varied in chemical composition, flow rate, oxygen content, and humidity. Characteristic concentration of combustibles exceeded the LFL (Lower Flammability Limit) 90% of the time.
Since the emissions were from several processes and vents, there was no predictability; therefore, the control device had to be able to respond automatically to all variations in process parameters.
Solution Provided
PEI provided a Direct Fired Oxidizer (DFO) equipped with multi-port burners and variable process blowers.
The process emissions were treated as the independent variable and were fed to the primary fuel port of the oxidizer burner. A second port was for natural gas, which would be required only when the process emissions did not provide enough combustibles to operate fuel-free.
A fresh-air blower automatically added outside air for dilution whenever the process emissions contained excessive concentrations of combustibles.
All of these dependent variables were controlled by a thermocouple package set to provide a constant temperature within the oxidizer, typically 1400 F to 1800 F.
Industry
Chemical Processing
Type of Product
Direct-Fired Oxidizer (DFO) equipped with a multi-port burners.
EPA - Compliance
99%, or higher, control of VOCs and HAPS allowed the user to operate in compliance with all applicable regulations at the lowest possible operating cost.
 

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