What's In Oven Exhaust?
Where can I get solid information that they can read for themselves about whats going out the oven exhaust?
Q. I’m a manufacturer of ovens, washers, booths etc. and I am trying to get a coating facility off the ground as well, in Wooster, OH. I have a meeting with the city this week concerning the operation. I’ve got the wastewater issue under control, but when they ask “what’s going out the oven exhaust?” I don’t know the answer! How do I answer that question?
Where can I get solid information that they can read for themselves? T.B.
Featured Content
A. The exhaust from a powder oven includes by-products of gas combustion and some trace gases from the powder. The exhaust will have reduced oxygen content and combustion by-products that include some carbon dioxide, trace amounts of carbon monoxide and a small amount of nitrous oxide. If the gas is dirty, there may be some sulfur oxide. These gases are the normal by-products of burning natural gas, and the volume is very low.
The products released by the curing powder depend somewhat on the type of powder being cured. A typical epoxy is almost 100% solids and does not release traceable amounts of gas. TGIC polyesters release a small amount of benzene, some isophorone diisocyanate (IPDI) and polyester oligomers. Urethanes release some polyester oligomers, and primid-based powders release some water vapor.
It should be stressed that all of these materials are in very small volume, well below threshold limit value (TLV) levels. A typical powder has 95–98% solid content, so there is not much that becomes volatile in the oven.
RELATED CONTENT
-
Calculating Oven Heat Load Capacity
Please explain how to calculate the heat load capacity of a paint baking oven, using aluminum alloy wheels as an example.
-
Improving Transfer Efficiencies in Coating Operations
There are many methods for addressing electrostatic grounding in metal painting processes, and Tim Ulshafer from Mueller Electric says the best method for your process is a simple and worthwhile exercise.
-
Proper Testing of a Powder Coat Finish
Manufacturer shows how it performs extensive tests on powder coated medical carts.