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# Roermond Startup COS Emissions
- July 3, 2013 Sampling time COSemission Sampling (ppm] [h:min] 16:20-16:30h 1 <1 16:30-16:40h 2 <1 16:40-16:50h 3 <1 16:50-17:00h 4 <1 17:00-17:10h 5 <1 17:10-17:20h 6 <1 17:20-17:30h 7 <1 17:30
- 17:40h <1 8 17:40-17:50h <1 9 <1 Average • All samples below detetction limit • Tedlar bag samples, analyzed by GC-MS • 1 ppm COS 

### =0.006 Ib/ton melt or 0.06 Ib/hr • Representative sulfur content of charge

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# ProposedMineralWoolMACT
- Definitions
• New design meets current cupola definition • Cupola means a large, water-cooled metal vessel to which is charged a mixture offuel, rock and/or slag, and additives. As the fuel is burned, the charged mixture is heated to a molten state for later processing to form mineral wool. 

### • New design is an open-top cupola [as proposed] • Open-top cupola means a cupola that is open to the outside air and operates with an airflow rate that is unrestricted and at low pressure. [Proposed] S. --h.-tj--' • NAIMAComment: Deleted the phrase "and at low**pressure.~** • Closed-top cupola means a cupola that operates as a closed (process) system and has a restricted air flow rate. [Proposed] • NAIMA Comment: Replaced the word restricted**~** 

### • Slag is typically used as a raw material in the process

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# ProposedMineralWoolMACT
- Definitions • Proposed Definition of Startup • "Startup begins when the coke interspersed with layers of rock and/or slag and other mineral products are ignited. Startup ends when molten mineral wool begins to flow from the cupola." [Proposed §63.1197(c)] NAIMA Comment: "Startup begins when combustion air is turned on to the cupola. Startup ends when the cupola is operating within normal parameters, not to exceed four hours

# ~**.** from the start of feed
.. of raw materials,;'and useful melt e . s to flow from the cupola."**~** 

### • New Melting Technology • Startup Begins (Start of NG/Oxy-Fuel Burners) • Startup Ends (Thermal Stable Production achieved)**~ ~**  The world's leading SllsramaOlllfV COT/SUI/ii' ERM 4

# ProposedMineralWoolMACT
- Definitions • Proposed Definition of Shutdown • "Shutdown begins when the cupola has reached the end of the melting campaign and is empty. No mineral wool glass continues to flow from the cupola during shutdown." [Proposed §63.1197(d)] • NAIMA COrTlment: "Shutdown begins when the feed of raw materials is stopped and the combustion air is shut off.**~\** 

### Shutdown ends when the cupola is empty and melt no longer flows from the cupola spout." 

### • New Melting Technology • Shutdown Begins (Raw Material/Fuel Feed stopped) • Combustion air is still required for natural gas/oxy-burners to maintain molten state of melt 

### • Startup Ends (When Melter is Empty)

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## Options for COll1pliance Standard - Startup • Work Practices • Propose: Operate furnace in an oxidizing atmosphere or with an oxygen content >21 0 /0. 

## • Demonstration of Compliance: Calculated oxygen content based on oxygen and combustion air flow monitoring.

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# •
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# Options for 

# COll1pliance Standard
- Shutdown • Work Practices • Propose: Operate furnace in an oxidizing atmosphere or with an oxygen content >21 0 /0. 

## • Demonstration of Compliance: Calculated oxygen content based on oxygen and combustion air flow monitoring.
• Alternatively: Use only natural gas fuel during shutdown.

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