Tel: +1 908 500 7500 Stephen R. Parker, Sales Engineer
Ringoes, New Jersey
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Thermal Oxidizers


Thermal Oxidizer
HTT 6,000 SCFM Modular Thermal Oxidizer System
Designed to control vent gasses at
catalyst recycling operation
New Orleans, LA

Well we've finally done it! We have the first conversion recuperative catalytic oxidizer that can operate with either gas or electric as the heating source. Some of our customers utilize rental units of both electric and gas fired systems, so wouldn't it be great if you could simply stock the core unit and then mount either a gas burner or an electric heating unit in 30 Minutes? Well, now you can!


HTT supplies one Fume Incineration System containing a gas burner or electric heaters to raise the temperature of the exhaust gases to the required operating temperature. This assures maximum destruction of the VOCs in the exhaust gas. The complete system is packaged with an integral preheat exchanger, Inconel-sheath, low watt density heating elements or gas burner, precious metal ceramic type catalyst module, refractory lined processing chamber and the field installed stack.


The Catox System is constructed of 304 stainless steel (Note: We use 316 L for HCl solvent applications) and insulated with a combination of ceramic fiber and high temperature insulating materials. The refractory is installed with stainless steel anchors to maintain integrity while the lower chamber is constructed of carbon steel and coated with an acid-resistant epoxy coating.

HTT 6,000 SCFM Modular Thermal Oxidizer System
Includes -
ID fan, combustion blower, flame arrestor and ceramic lining
New Orleans, LA


Catalyst is supplied in modular sections in separate frames. The frames come complete with all mounting flanges and gaskets. The frames bolt directly to a stainless steel support grid inside the chamber of the retention zone. This allows the EZ-Bolt Catalyst modules to be easily accessed for removal and or maintenance.


The system includes an integral preheat exchanger for raising the temperature of the exhaust gases prior to entering the firing chamber. The exchanger is a shell and tube-type unit manufactured using easy clean 1-inch alloy tubes.


The system includes a process air electric heater for raising the temperature of the gases to operating temperature as required. System comes complete with an Incalloy-sheathed tubular heater rated at 10-20 watts/sq. in. and mounted on a stainless flange with a weather-proof terminal housing and screw type terminals.

The system is available with a packaged gas-fired burner for raising the temperature of the gases to operating temperature as required. System includes flame safety, controls and safeties. A motorized modulating gas valve regulates the burner output using digital controllers. Burner train components are supplied separately for field installation. Customer is to supply gas regulators as needed.

Epoxy protective coating applied to all exposed surfaces


The top of the system contains a flanged connection for mounting the electric or gas heating system. Select the heat source and bolt either the burner or the electric elements to this flange. Each heat source comes with its own panel, which is mounted to the system base. Connect the thermocouples to the panel and it's complete. Removal and reinstallation takes less than one hour, however, it's sometimes faster to replace a troublesome component or panel with a new one than to spend time field troubleshooting.


The system includes one (1) dilution air blower for maintaining minimal air ratio and for controlling chamber temperature. The blower includes a control damper and modulating actuator.


The system includes one (1) flame arrester to prevent the gases and flame from backing up the supply duct.


Package may include an optional Data Logging system as manufactured by HOBO such as model H12-002 for a single channel type K TC. Other recorders are available that can accept T/C, MA, or DC inputs for required sensors.

HTT 6,000 SCFM Modular Thermal Oxidizer System
Ceramic fiber lining


The system includes one (1) waste gas diverting tee for closing off the stack during operation, or for closing off the waste gas to the oxidizer when the system is not operational. Package includes a spring return actuator that diverts up the stack in the event of a power failure.


The operator has the ability to start and stop the system from the main panel or from remote inputs. Startup proves the blower, start burner, prove set temperature and signal to start fume injection. Blower pressure and customer safety limits must be proven prior to burner ignition. Component failures shut down the system and alert the operator. Indicator lights will display any fault(s).

The system is designed to operate with a variable waste gas input while natural gas is controlled to maintain a preset temperature. The system is able to self-regulate the fuel input to both maintain temperature and adjust conditions to match the flow of the waste as stream.


The package includes one (1) Hoffman Nema 4 control panel for remote control and monitoring. The system maintains a preset temperature utilizing a type K T/C and 4-20 ma digital controllers. System is monitored by Honeywell DC-3000 temperature controllers for system operation, located in the main panel. All controls and safeties are operated from this main panel. The controller modulates the heat input to maintain temperature. Contacts are provided for remote start and stop, pressure limit switch and for motor starter coil. PLC operation is optional.

HTT 6,000 SCFM Modular Thermal Oxidizer System
Shipped in sections for ease of installation


Flow Rates - 100 200 300 500 1000 1500 SCFM
Waste Gas Temperature - 100 100 100 100 100 100 oF
Preheat Temperature - 415 415 415 415 415 415 oF
Catalyst Inlet Temperature - 550 550 550 550 550 550 oF
Temperature Rise from Elec. - 135 135 135 135 135 135 oF
Temperature Rise from VOC - 200 200 200 200 200 200 oF at 8% LEL
Catalyst Outlet Temperature - 700 700 700 700 700 700 oF
Estimated Stack Temperature - 250 250 250 250 250 250 oF
Calculated Heat Input - 7.5 15 24 37.5 75 112 Kw at 0% LEL
- 4 8 16 20 40 60 Kw at 3% LEL
- 0 0 0 0 0 0 Kw At 6% LEL
Heating Element Rating - 12 24 36 60 120 180 Kw
Destruction Efficiency - 99 99 99 99 99 99 %
Preheat Efficiency - 70 70 70 70 70 70 %
Catalyst Volume - 0.5 0.5 1.0 1.5 2.0 3.0 Cubic Feet (ft3)
Chris Parker wiring typical HTT System Control Panel


Typically takes 6 to 8 weeks following receipt of a valid purchase order, progress payments and all required approvals.


Installation may require utilities be brought to the system from source prior to installation. If possible, the gas train, supply duct and main panel are best located indoors. Any additional components that may be required to complete the system installation are provided separately prior to shipment of the main system units and may require prior installation at the system site.

Click here for more information on typical HTT Systems and Terms of Sale.


Select desired system from the list below for more information

Thermal Oxidizers(SVE)
100 - 4,000 SCFM
Enclosed Flares
5,000 - 20,000 SCFM
Catalytic Oxidizers
1,000 - 5,000 SCFM
Catox with Preheat
1,000 - 25,000 SCFM
Electric Catox with Preheat
100-1,000 SCFM

Below is more information on Catalytic and Thermal Oxidizers for download.

HTT systems options can include preheat exchangers, induced draft or secondary combustion blower, modulating dilution air TEEs, stack extensions, and catalyst modules. The Catalytic Oxidizers function exactly the same as a Thermal Oxidizer. The major difference is the operating temperature necessary for destruction of the VOCs. The HTT Lo-Temp Catalyst can operate effectively at temperatures as low as 400 F in some applications. The fuel savings at these low temperatures can be significant in reducing operating costs. Catalysts cannot be used in applications where chemical poisons or particulates are present such as SOX and silicone compounds.

Systems will be of the two basic types of waste gas streams. The first is the most common. The application will have a waste gas stream that will be mostly ambient air with a small quantity of VOC. For these applications, you can select the size based on the flow rate in SCFM. The second type is more complicated. In these applications, the gas stream that will contain little or no oxygen and high concentrations of VOC. In these applications, we calculate the amount of combustion air necessary to burn all of the hydrocarbons in the stream and then must add sufficient additional combustion air so that the final exhaust gas will contain a minimum of 8-10 percent oxygen.