Regenerative thermal oxidizer

Anaerobic digestion & regenerative thermal oxidiser (left) component of Mechanical biological treatment at Lübeck in Germany, 2007

A regenerative thermal oxidizer (RTO) is an industrial process for the treatment of exhaust air. The system is a type of thermal oxidizers that uses a bed of ceramic material to absorb heat from the exhaust gas. It then uses this captured heat to preheat the incoming process gas stream and destroy air pollutants emitted from process exhaust streams at temperatures ranging from 815 °C (1,500 F) to 980 °C (1,800 F).

These gas streams are usually produced by processes requiring ventilation, including paint booths, printing, and paper mills. Municipal waste treatment facilities such as mechanical biological treatment plants are required by law in Germany to incorporate these systems. Biological alternatives to this system include biofilters and bioscrubbers.

They are suited to applications with low VOC concentrations but high waste stream flow rates. This is due to their high thermal energy recovery. The basic operation of an RTO consists of passing a hot gas stream over a heat sink material in one direction and recovering that heat by passing a cold gas stream through that same heat sink material in an alternate cycle. They are used to destroy air toxics and VOCs that are discharged in industrial process exhausts.

The following manufacturers have been involved in the development, design and planning of waste gas purification systems for a wide range of industries: Global manufacture of turnkey systems

Tann Corporation (Kaukauna, WI), ^[1]
Lundberg (Bellevue, WA),^[2]
Eisenmann AG with its headquarters in Germany and RTO core business in USA,^[3]
Cycle Therm (Menomonie, WI),^[4]
B&W MEGTEC Systems,^[5] located in DePere Wisconsin, USA.
Banks Engineering,^[6]
Colt Technologies (Dallas, TX) www.colttechnologies.net
The CMM Group,^[7] located in De Pere, Wisconsin;
CTP Air Pollution Control,^[8]
Epcon Industrial Systems, LP.^[9]
WK Asia-Pacific Environmental Pte Ltd,^[10] located in German Center, Singapore,
NESTEC,^[11]
Dürr Systems, Inc.,^[12] headquartered in Germany with U.S. Headquarters in Plymouth, Michigan
Process combustion Ltd.,^[13] located in the United Kingdom
Anguil.,^[14] and
American Fabrication and Supply,^[15]
Kentec. located in South Korea.^[16]

They produce systems to remove:

Volatile organic compounds (VOC)
Hazardous air pollutants (HAP)
Carbon monoxide (CO)
Nitrogen oxides (NOx)
Hydrogen Sulfide (H2S)
Organic particulate matter (PM)

The industries they currently serve are:

Ethanol Industry
Coal Mining Industry (VAM)
Car manufacturing
Packaging/printing
Brick
Paint shop
Chemical
Pharmaceutical
Electrical
Plastics
Food processing
Printing
Foundries
Semiconductor
Metallurgical
Sewage sludge treatment
Metal recycling
Wood

Different solutions to the waste gas problems of one of the mentioned industries are available:

Catalytic oxidisers (CO)
Regenerative thermal oxidisers (RTO)
Regenerative catalytic oxidisers (RCO)
Fluidized bed concentrators (FBC)
Fixed bed adsorbers
Rotary concentrator adsorbers
Smoothing bed

References

This article is issued from Wikipedia - version of the Thursday, March 17, 2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.