Industrial Thermal Oxidizers

Industrial Thermal Oxidizers

Thermal Oxidizers, or vapor incinerators, are used broadly in industrial applications for the destruction of unstable natural compounds (VOCs) for air air pollution control. Certain, there are emissions necessities that should be met, but do you know that in addition to destroying contaminants, you can be burning up cash as well?

With the intention to ensure destruction of the VOCs, the temperature of the waste air stream should be raised to a comparatively high temperature, typically within the range of 1,200 to 1,800 degrees F or even higher.

Usually, some sort of fuel is required (no less than partially) to carry the temperature of the waste stream up to the temperature that gives acceptable oxidation (burning) of the contaminants. This fuel is usually pure gas. At $0.60 to $0.eighty per therm, minimizing the amount of natural gas used can save a number of money. So how can we reduce the fuel usage?

Thermal Oxidizer Types
A thermal oxidizer with no heat recovery is called an afterburner. Within this category, there are additionally thermal oxidizers that recover warmth in some form. These are recuperative thermal oxidizers and regenerative thermal oxidizers (RTO). These provide obvious advantages over a straight afterburner, as heat is recovered from the relatively hot exhaust gases.

If you'll want to install a new oxidizer, consider using a regenerative thermal oxidizer. This oxidizer has two circulation paths every with ceramic media in a bed. Movement is alternated by way of every bed in order that one is transferring warmth to the cool incoming untreated air while the opposite "cool" bed is being used to recover heat from the recent treated exhaust. The stream is then switched back and forth between the two beds.

Another option is to install a recuperative thermal oxidizer. This is usually not quite as efficient because the RTO described above. A recuperative thermal oxidizer makes use of the recent exhaust to pre-treat the cool incoming air in a warmth exchanger. The recovered warmth is also used elsewhere within the facility wherever it's needed. An instance of this can be a waste warmth boiler to supply steam.

Another type of oxidizer is called a catalytic oxidizer. This also involves utilizing heat to oxidize contaminants, however it also incorporates a catalyst material to lower the temperature at which proper oxidation of the contaminant happens – typically within the 500 to 650 degrees F range. The benefits of a decrease temperature embrace a lot less supplemental fuel use. Heat recovery can be applied to this technology. In fact, the catalyst materials adds expense and maintenance.

Regardless of the option you choose, if your waste stream consists of a big volume with a comparatively low focus of VOC, consider adding a concentrator to your oxidizer system. This is strictly 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-quantity higher-temperature air stream that's then oxidized more economically.

Select the Proper System for Your Application
In addition to choosing an oxidizer that is suitable together with your contaminant stream, just be sure you choose a system that gives the most heat recovery possible. Consider this; when you have 20,000 cfm of exhaust air at 1,500 degrees F, and you'll recover heat in order that the exhaust temperature is dropped to 300 degrees F, the amount of heat recovered is over 8 million BTU per hour. That's equal to over 100 residential furnaces!