Typical HTT Thermal and Catalytic Oxidizer Systems

Description and Terms of Sale

HTT shall supply one Fume Incineration System. The system shall raise the temperature of the exhaust gases to the required operating temperature. This will assure maximum destruction of the VOC in the exhaust gas. The system shall be packaged complete with natural gas burner, refractory lined chamber, stack, controls and the required optional components as described below:

REFRACTORY CHAMBER
The chamber shall be constructed of carbon steel and lined with aa combination of Ceramic Fiber and high temperature insulating materials. The refractory shall be installed with SS anchors to maintain integrity. Chamber shall be coated inside and out with an acid resistant epoxy coating.

The chamber shall be mounted on a steel skid with suitable cross bracing. Chamber shall include sight ports, thermal wells, and access door. Surfaces shall be solvent washed brushed and painted with a high temperature an acid resistant epoxy coating. Extra paint will be supplied for customers future touchup.

EZ-BOLT IN TYPE 2500 SCFM CATALYST MODULE

CATALYST BED (CAT Option)
Catalyst shall be supplied as modular components mounted in separate EZ-Bolt frames. The EZ-Bolt frames will be complete with mounting flanges. The frames will bolt directly to a SS support grid inside or outside of the chamber. On the SVE systems, the EZ-Bolt Catalyst modules may be installed externally for ease of removal and maintenance.

SVE applications with high VOC levels during the first few months of operation, should use an FM-G. But when the VOC levels drop, a catalyst module can be added. The fuel usage is reduce dramatically. The CAT module can be purchased as part of the original order, or later as required. The module is mounted to a flange located under the stack transition section.

PREHEAT EXCHANGER (HR Option)
The system shall include an integral preheat exchanger for raising the temperature of the exhaust gases prior to entering the firing chamber. The exchanger shall be a plate type unit as manufactured by Exothermics Eclipse and Des Champs Labs. Exchanger shall be complete with Computer runs.

NATURAL GAS BURNER (G Option)
The system shall include one (1) packaged gas fired burner for raising the temperature of the gases to set operating temperature as required. System shall be complete with flame safety, controls and safeties. A motorized modulating gas valve will regulate the burner output using Honeywell digital controllers. Burner train components are supplied loose for field installation. Customer shall supply natural gas regulator.

STAINLESS CHAMBER (SS)
The chamber shall be constructed of 304 SS steel and insulated with a combination
of Ceramic Fibre and high temperature insulating materials. The chamber shall be
mounted on a channel steel skid with suitable cross bracing. Chamber shall include
thermal wells, and access panels. The chamber shall be mounted on a channel steel
skid with suitable cross bracing. Chamber shall include sight ports, thermal wells,
and access door. Chamber shall be coated with an acid resistant epoxy coating

PACKED TOWER SCRUBBER (PTS)
The scrubber shall be constructed of FRP and will include a quenching section, venturi, circulation pump, filler valve, level sensor, liquid storage, packed tower, and demister pad. All components shall be skid mounted for ease of assembly.

The Scrubber will clean the gases of fumes before being discharged into the atmosphere. The gases contact the scrubber water to condense the fumes and wet the particles while cleaning the interior walls of the housing. A mixing section or packed tower accelerates the gas flow and maximizes the collection of the pollutants. The demister separation section removes ultra fine droplets and particles prior to being drawn to the atmosphere.

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

The system shall be designed to operate with a variable waste gas input. Natural gas will be controlled to maintain a preset temperature. The system will be able to self regulate the fuel input to both maintain temperature and adjust conditions to match the flow of the waste gas stream. Note: Variable Frequency Drive (VFD) supplied by others.

Electric Heating System (E)
The system shall include a Gaumer Model IDH electric process air heater for raising the temperature of the gases to operating temp as required. System shall be complete with an Incaloy sheathed tubular heater rated at 20 watts/sq. in, .475" diameter, mounted in a stainless frame, moisture resistant terminal housing, and potted terminals.

INDUCED DRAFT BLOWER (B Option)
The ID Blower shall be a centrifugal type, arrangement #9, complete with shaft seal, drilled inlet and outlet flange, lean-out door, Vee belt drive with OSHA guard, and a 1750 RPM TEFC Motor, 230/460/3/60. The blower is designed to handle a 10" WC pressure drop at design flow. (Starter and disconnect by others.)

FLAME ARRESTER (FA Option)
The system shall include one (1) Flame Arrester to prevent the gases and flame from backing up the supply duct during momentary high VOC conditions

AIR CONTROL TEE (T Option)
The system shall include 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 shall include a spring return actuator that will divert up the stack during a power failure.

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

The system shall be designed to operate with a variable waste gas input. Natural gas will be controlled to maintain a preset temperature. The system will be able to self regulate the fuel input to both maintain temperature and adjust conditions to match the flow of the waste gas stream.

CONTROLS
The package shall include one (1) Hoffman Nema 4 control panel, for remote control and monitoring. The system shall maintain a preset temperature utilizing a type K T/C and 4-20 ma digital controllers. The system shall be monitored with Honeywell DC-3000 temperature controllers for system operation located in the main panel. All controls and safeties are operated from this panel. The controller will modulate the gas to maintain temperature. Contacts will be provided for remote start and stop, pressure limit switch, and for motor starter coil.

HTT personnel provide off site technical assistance for control changes at no charge during the life of the equipment. Travel and living expenses not included.

Optional - Package may include an optional multi-point strip chart recorder. Recorder shall accept T/C, MA, or DC inputs for required sensors. These will accept the inputs from the optional monitors. The panel shall be provided with Nema 4 control switches, indication lights, and terminal strip contactors.

Typical HTT Terms and Conditions
DELIVERY: Shall be 4-10 weeks after the receipt of a valid purchase order, progress payments, and all required approvals.

TERMS: 33.3% with order, 33.3% when fabrication period is half way, 33.3% when fabrication is completed prior to shipment.

Note: Costs of any and all emissions testing are extra. Any additional equipment or controls required above those stated herein shall be provided at extra charge.

INSTALLATION: Installation will require running gas and utilities to unit from source. We suggest the gas train, supply duct, and main panel are located indoors, we will provide these components loose prior to shipment of the main unit to be installed prior to delivery of main units.

Typical Sources of Supply

1. Refractory Materials

AP GREEN
CARBORUNDUM

2. System Controls

SWITCHES - Square D, Allen-Bradley, Control Concepts
RELAYS - 3PDT W\Neon indication
PANELS - Hoffman, Electromate - NEMA 4
CONTROLLERS - Honeywell, UDC-3000, DC-300
VALVE TRAIN - Asco, Honeywell

3. Burners - Midco, Haulk, Maxon

4. Catalyst Materials - Metpro Corporation

5. Heat Exchangers - Des Champs, Exothermics

FIVE YEAR Warrantee: HTT shall warrant that the system described shall meet all pertinent emissions codes per the submitted documentation. HTT shall warrant that the equipment furnished shall be free of defects in materials and workmanship. This warrantee shall cover parts manufactured by HTT for a period of FIVE YEARS. HTT shall limit warrantees for parts not manufactured by HTT. Defective components shall be repaired or replaced per the manufacturers warrantee to be installed by customers personnel.

Documentation: HTT shall provide operating and maintenance manuals that include operating instructions, component data, and drawings.

*SPECIAL NOTE

1. Customer shall be responsible for all emission testing, rigging and field modifications, field ducting, piping and wiring, mounting and wiring of remote panels, monitoring equipment, and all starters and 3 phase electrical work. No platform is provided for stack gas sampling.

2. HTT shall assist in the design and layout and also provide the time of an on site technician as required during system installation at no charge for labor for up to two (2) days. (Travel and Living Expenses extra)

3. Units are shipped FOB shops