Atmosphere Generators
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Exothermic Gas Generators
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Exothermic generators are designed to produce cover gases for a variety of applications from use as a non-oxidizing atmosphere in the heat treating of bright metals, such as aluminum and copper, to providing a carburizing atmosphere for some metals to simply providing an inert and explosion-proof environment in which to mix chemicals, formulate flammable recipes or prevent combustion. These cover gases are produced from the combustion of hydrocarbon fuels. Although propane and natural gas are the most commonly used, virtually any combustible fuel, such as MAP gas or even liquid fuels, such as kerosene or fuel oil, can be used.
Exothermic generators, built by Thermal Dynamix, are compact; water-cooled units for either rich or lean atmospheres. Although natural gas and propane are normally used as fuel other materials such as, MAP gas, methane and even alcohol can be used.
The exothermic generator is essentially a very tightly constructed and controlled combustion chamber into which a precisely measured and controlled mixture of air and fuel are introduced and ignited. The mixture burns at temperatures from 2,000F to 2,800F.
There are actually two types of exothermic gas generators; one to produce a lean exo-gas comprised largely of nitrogen and carbon dioxide (with very little hydrogen) and a different type to produce a rich exo-gas containing somewhat less nitrogen and carbon dioxide and a larger hydrogen component. The difference in the two types is the need for a catalyst bed in the rich exo-gas generator to ensure the complete cracking of the products of combustion.
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