DEQ-CFW_00086135

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2008 Air Emissions Inventory Supporting Documentation
Emission Source ID No.: NS-M
Emission Source Description: TFE/CO2 Separation Process
Process and Emission Description:
The TFE/CO2 separation process is a continuous process. All emissions from this process vent to
either the Nafion Division Waste Gas Scrubber (WGS) or the area vent stack. The control of
emissions of the TFE compound will be addressed in the attached spreadsheet. TFE will pass
completely through the scrubber, therefore the efficiency is assumed to be 0%.
Basis and Assumptions:
A mass balance is used as the basis for the TFE/CO2 area emissions. The TFE/CO2 emissions
includes the TFE/CO2 area as well as the Polymers LJC and dryers. The flow of TFE/CO2 into
the area is divided by two in order to determine the amount of TFE fed to the system. Then each
of the end users (which includes polymers, semi -works, MMF and RSU) determine how much
they have consumed and these numbers are subtracted from the total TFE into the system to
determine the emissions. Mass flowmeters in each area are used to determine the total input and
output flows.
Information Inputs and Source of Inputs:
Information Input
Source of Inputs
TFE/CO2 consumption
Precursor Production Facilitator/IP21
Polymers Consumption
Polymers Production Facilitator/IP21
Semiworks Consumption
Semiworks Production Facilitator/IP21
MMF Consumption
jPrecursor Production Facilitator/IP21
RSU Consumption
I Precursor Production Facilitator/IP21
Point Source Emissions Determination:
Point source emissions for individual components are given in the following pages. A detailed
explanation of the calculations are attached.
Equipment Emissions and Fugitive Emissions Determination:
Emissions from equipment leaks which vent as stack (point source) emissions and true fugitive
(non -point source) emissions have been determined using equipment component emission factors
established by DuPont. The determination of those emissions are shown in a separate section of
this supporting documentation.
DEQ-CFW 00086135