Tel: +1 908 500 7500 Stephen R. Parker, Sales Engineer
Ringoes, New Jersey
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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 have rental units of both electric and gas fired systems. Wouldn't it be great if you could stock the core unit and then mount either a gas burner or an electric heating unit in 30 minutes? Now you can.


The HTT Fume Incineration System contains 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.


HTT Catox Systems are 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 nsulating materials. The refractory is installed with stainless steel anchors to maintain integrity. The lower chamber is constructed of carbon steel and coated with an acid-resistant epoxy coating.


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


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


The system includes a process air electric heater for raising gas temperatures to operating the operating temperature as required. Also included is an Incalloy-sheathed, tubular heater rated at 10-20 watts/sq. in, mounted on a stainless steel 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 the required operating temperature and also includes flame safety controls and safeties and a motorized modulating gas valve that regulates the burner output using digital controllers. Burner train components are supplied separately for field installation prior to system installation. The customer is responsible for supplying any needed gas regulators and piping.


Each HTT system includes a flanged connection for mounting either the electric or gas heating system. The customer can choose the heat source so either the burner or the electric elements may be bolted to this flange. Each heat source comes with its own panel, which is mounted on the system base. Under normal circumstances, removal and reinstallation may take less than one hour.


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


One (1) flame arrester is included with the system to reduce the possibility that any gases or flame may back up through the supply duct.


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


Included is one (1)waste gas diverting T-junction for closing off the stack during operation, or for closing off waste gasses to the oxidizer when the system is not operational. The system includes a spring-return actuator that diverts gasses up the stack during a power failure.


The system operator has the ability to start and stop the system from the main panel, or from remote inputs. Start up mode 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 will shut the system down and alert the operator. Panel indicator lights display any fault(s).

Each system is designed to operate with a variable waste gas input. Natural gas will be controlled to maintain a pre-set 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 gas stream.


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


System Flow Rate - 100 200 300 500 1000 1500 SCFM
Waste Gas Temp - 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 %
Pre-heat Efficiency - 70 70 70 70 70 70 %
Catalyst Volume - 0.5 0.5 1.0 1.5 2.0 3.0 Cubic Feet (ft3)


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.