Thermal Oxidizers, or vapor incinerators, are used widely in industrial purposes for the destruction of unstable natural compounds (VOCs) for air air pollution control. Sure, there are emissions necessities that should be met, but did you know that in addition to destroying contaminants, you could be burning up money as well?
With a purpose to guarantee destruction of the VOCs, the temperature of the waste air stream have to be raised to a relatively high temperature, typically within the range of 1,200 to 1,800 degrees F or even higher.
Usually, some form of fuel is needed (not less than partly) to bring the temperature of the waste stream up to the temperature that gives acceptable oxidation (burning) of the contaminants. This fuel is often natural gas. At $0.60 to $0.eighty per therm, minimizing the quantity of natural gas used can save a lot of money. So how do we reduce the fuel usage?
Thermal Oxidizer Types
A thermal oxidizer with no warmth recovery is called an afterburner. Within this category, there are additionally thermal oxidizers that recover heat in some form. These are recuperative thermal oxidizers and regenerative thermal oxidizers (RTO). These present apparent benefits over a straight afterburner, as heat is recovered from the relatively hot exhaust gases.
If it’s worthwhile to install a new oxidizer, consider utilizing a regenerative thermal oxidizer. This oxidizer has two movement paths every with ceramic media in a bed. Flow is alternated by way of every bed so that one is transferring warmth to the cool incoming untreated air while the other “cool” bed is getting used to recover warmth from the new handled exhaust. The stream is then switched back and forth between the 2 beds.
One other option is to put in a recuperative thermal oxidizer. This is generally not fairly as environment friendly because the RTO described above. A recuperative thermal oxidizer uses the recent exhaust to pre-deal with the cool incoming air in a warmth exchanger. The recovered warmth could also be used elsewhere within the facility wherever it is needed. An example of this would be a waste heat boiler to provide steam.
Another type of oxidizer is called a catalytic oxidizer. This additionally includes utilizing warmth to oxidize contaminants, but it additionally incorporates a catalyst materials to lower the temperature at which proper oxidation of the contaminant happens – generally in the 500 to 650 degrees F range. The advantages of a lower temperature include much less supplemental fuel use. Heat recovery can also be utilized to this technology. Of course, the catalyst material adds expense and maintenance.
Regardless of the option you select, in case your waste stream consists of a giant volume with a comparatively low concentration of VOC, consider adding a concentrator to your oxidizer system. This is precisely what it sounds like. The concentrator has media that adsorbs the contaminants from the waste stream previous to the oxidizer. The media is then “regenerated” with a decrease-volume higher-temperature air stream that is then oxidized more economically.