Products 

Global Technologies' Integrated Vapor Treatment Module (VTM) destroys organic vapor contaminants that are extracted from soil vapor extraction wells or air scrubber towers. The system is integrated with a Vapor Liquid Seperator (knockout pot), blower and vapor treatment module. The Remedi-Cat^TM model is designed for hydrocarbon contamination; the Chloro-Cat^TM model is designed for halogenated or mixed organic vapor contaminants.

How the Remedi-Cat Works
The Remedi-Cat or Chloro-Cat will provide 99% destruction efficiency of VOC's (higher destruction efficiencies are possible with additional catalyst). During operation, VOC-laden air is drawn by the VTM regenerative system blower from vacuum extraction wells and diluted to the appropriate concentration using an automatic valve. The blower discharges the contaminated air into the tube side of the primary heat exchanger, where it is preheated prior to the gas burner. Within the burner/reactor section the contaminated air is raised to oxidizing temperature by the burner prior to entering the catalyst module. When the vapor-laden air passes through the catalyst, an exothermic reaction takes place. The hot purified air then passes through the shell side of the heat exchanger where the energy released by the reaction is used to preheat the incoming air. The cooler, vapor-free air is exhausted to the outside atmosphere.

The Model 7 Integrated Unit has a 20 h.p. regenerative blower which allows vapor extraction at up to 10" hg vacuum from vapor extraction wells. No additional blowers are needed.

Global's Fully Integrated Approach
The Therm-Cat was designed as part of Global's entire line of soil and groundwater remediation products. The Global line of products, which includes Vapor Liquid Separators (Knockout Pots), Extraction Blower Packages, Oxidizers, and Acid Gas Scrubbers, is technologically advanced as well as user-friendly. Each module interfaces easily and is constructed for optimum performance and trouble-free operation.

When networked, the Global modules form a comprehensive subsurface remediation system that works continuously and automatically to achieve site closure quickly. In addition, Global's modular approach allows rapid deployment and provides the flexibility necessary to successfully perform site remediation under a wide variety of conditions.

System Components
The Integrated System includes a Vapor Liquid Separator Module, 300 series stainless steel shell and tube heat exchanger, reactor vessel with catalyst, modulating burner, gas train, regenerative blower with 20 h.p. motor, system controls, flowmeter, automatic fresh air dilution valves, first-out shutdown detector, flanged inlet and outlet, inlet/outlet temperature recorder/controller and sound insulated steel cabinet with access doors. In addition, Remedi-Cat models offer LEL monitor, manual heat exchanger bypass and flame arrestor.

Remedi-Cat System Schematic


Safety Shutdowns
The system will shut down safely and automatically if any of the following occur:

• Electrical power loss to the control panel.
• Loss of proper air flow.
• Loss of flame.
• High or low temperature or fuel pressure.
• High level in Vapor Liquid Separator (Vapor Liquid Seperator is not included with standard Model 1 system).

The PLC-driven, first-out shutdown detector will indicate the cause of a shutdown on a liquid crystal display (LCD).