Incinerators:

CESCO is proud to be an authorized representative of Eisenmann, an industry leader in thermal oxidizers, regenerative thermal oxidizers, and rotary concentrators.


http://www.eisenmann.de/index.php?ci=343&lang=2&option=

An incinerator is a structure designed to burn waste, processing the by-products (e.g. bottom and fly ash) so that their impact on the environment and persons is strictly controlled. Many incinerators now recover waste in the form of electricity or thermal energy. Thermal incinerators (also known as recuperative incinerators, direct flame incinerators, thermal oxidizers) and catalytic incinerators (also known as catalytic oxidizers or catalytic reactors) essentially oxidize and deplete noxious fumes.

Thermal Incinerators

Thermal incinerators diminish the waste-gas volatile organic compounds (VOCs) from such operations as industrial dryers, kilns and ovens.  The fastest and safest method to eliminate VOC's is oxidation. In this process, the polluted air is heated to the point where the majority of the organic materials oxidize into water and carbon dioxide. 

Thermal oxidizers may be either recuperative or regenerative.  In cases where the excess energy can be recovered and reused in the production process, recuperative oxidation is unbeatable. This process is known to be robust, safe, and universally applicable.  Due to its minimal use of additional energy, and cases where recovered energy cannot be reused, the trend clearly goes towards regenerative thermal oxidation (RTO).  In the design offered by CESCO, complicated valve technology is eliminated by a special air distribution system without expensive control technology.


Valveless RTO

Thermal Oxidizer
Selection Guide:

3 = Excellent/
Applicable

2 = Well/
Applicable

1 = Limited Application

 

Recuperative

Regenerative

 

Thermal

 

Thermal

 

 

Oxidation

 

Oxidation

Exhaust Air Volume

Nm3/hr

scfm

50,000-1,000,000

29,430-588,600

1

2

5,000-50,000

2,943-29,430

3

3

1,000-5,000

589-2,943

3

3

Pollutant Concentration

g/Nm3

ppm

>10

>10

3

1

5 -10

5 - 10

3

3

1- 5

1 - 5

1

3

<1

<1

1

2

Exhaust Air Temperature

Deg C

Deg F

>100

>212

3

 

3

30 - 100

86 - 212

2

 

3

<30

<86

1

3


Industries that commonly use thermal incinerators include ethanol, graphite, graphic arts, hazardous waste treatment storage and disposal, paint, petroleum, plywood manufacture, rubber, surface coating, and synthetic organic chemical.


              

Valveless Regenerative Thermal
Oxidizer (vRTO) being installed on
dryer offgas at an ethanol plant
 

Refinery Sludge
Incineration System





Rotary Concentrator Unit (RCU), utilizing
an adsorbant such as activated carbon,
hydrophobic zeolite or a mixture, followed
by a Thermal Oxidizer (TO) as final stage of
exhaust air purification at a packaging facility

Thermal Oxidizer (TO) for exhaust
air purification at a painting facility





Roller Hearth Kiln for the
Destruction of Highly Toxic Waste

High Turbulence Furnace for
Catalyst Recovery Application







Dual Stage Pyrolysis and Incineration
System:  the dry sludge granules are first
introduced to pyrolysis, followed by
incineration.  The energy from the pyrolysis
gas is used in the same process to dry the
sludge. 
The process is perfectly suited for the
thermal utilization of solid or semi-solid
materials with a high heating value. In
the dual-chamber rotary furnace, the
“pyrolysis” step for the conversion of the
waste into energy, is followed by the
“incineration” step, which turns the waste
into inert ashes to be safely disposed of.


Thermal Oxidizer specifically
designed for NOx removal














Catalytic Incinerators

CESCO is proud to be an authorized representative of John Zink, an industry leader in thermal oxidation equipment.

John Zink Company LLC

http://www.johnzink.com/products/therm_ox/pdfs/ther_catalytic.pdf

Catalytic destruction of volatile organic compounds (VOC) contaminants in an air stream is a very economical solution to plant emission reduction. The process involves lower temperature operation than corresponding thermal options and often allows heat recuperation without requiring exotic alloys in the heat exchangers. This feature further reduces the comparatively low fuel consumption of the catalytic systems. While these economic factors have made catalytic systems attractive to the end user, the applications have been limited by the vent stream constituents that could be tolerated by the catalyst formulation.  Catalysts used in VOC oxidation processes have had limited applicability because the catalyst could be deactivated by some contaminants, masked by some, and poisoned by others. The former limitations were so broad that only select applications were considered an appropriate fit.  Aggressive research programs by catalyst suppliers have developed formulations to eliminate these limitations or render them less harmful. 

Catalytic incinerators offer fixed-bed or fluid-bed systems and are used to combat VOCs (volatile organic compounds) and particulates. Industries such as petroleum, coal, chemical, primary metals, electronics, gas, sanitation, stone, clay, glass, mining, paper, surface coating and printing often rely on this method.




Diagram of Typical
Catalytic Oxidizer System



Catalytic Oxidizer Destroys
Airborne Organic Vapor Fumes

Catalytic oxidation of VOC contaminants in a waste stream is typically performed with waste streams where the VOC concentration does not exceed 25% of the Lower Explosive Limit (LEL) and where the oxygen concentration of the flue gas is at or above 2.0%. The system is designed to raise the waste stream temperature to the design inlet temperature of the catalyst, typically 260-370°C (500-700°F), by a combination of fuel gas burning and heat recuperation.  The catalyst outlet temperature is a function of the amount of heat available for release contained in the VOC, and the Destruction Removal Efficiency (DRE) required for the application. This temperature is usually limited to a peak value of 663°C (1225°F) .  The exact amount of catalyst needed is determined by the DRE requirement and the exact VOC constituents being oxidized. More difficult constituents such as CH4, etc. require greater volumes of catalyst for destruction than do most longer-chained hydrocarbons.
 
 
 

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