MDI Emissions Reporting Guidelines for the ... - Polyurethanes

MDI Emissions Reporting Guidelines for the Polyurethanes Industry
Overall Facility Example
The basic formulas presented in the preceding pages can be used to estimate the
amount of air emissions from a facility that handles an MDI and /or MDI/PMDI
mixture. Typically the total air emissions will be the sum of the amounts emitted
from the following:
Storage and Day Tanks (working and breathing losses)
Fugitive Emissions (non-point sources) Measured
Fugitive Emissions(non-point Source) Equipment Leaks
Stack Emissions from Enclosed Processes
Stack Emissions from Open Processes
Stack Emissions from Continuous Processes
Stack Emissions from Saturated Air Stream
Although the above list represents the predominant sources of air emissions from
most facilities, each facility and process is unique. One needs to consider whether
there are other potential emission sources (both fugitive and point source emissions).
The example presented below utilizes the techniques described in the abovementioned
categories. In each case the worst-case scenario is used for illustration.
EXAMPLE:
J & J Foam Products, Inc. operates a facility that processes 10,000,000 pound/year
of MDI/PMDI. Shipments are received by rail car and are off-loaded into a 40,000gallon
storage tank. Operations include:
1. Re-packaging of material from storage into 55-gallon drums,
2. Manufacture of automotive sun visors,
3. Manufacture of seat cushions,
4. Spray coating of bumpers and fenders, and
5. Manufacturing of laminated boardstock used in the construction industry.
Fugitive emissions from the process area include measured air exhaust concentration
and from equipment leaks located outside.
The facility had two spills during the year that resulted in a loss of 1,000 gallons of
material.
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