Atmosphere Generators
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Adjustable Firing Rates
The mixture or air/fuel ratio in an exothermic generator can be adjusted, within limits on each type of generator, from leaner (more air) to richer (more fuel). This enables some significant choice in the composition of the exo-gas.
Generally speaking a lean exo-gas is comprised of approximately:
86.5% Nitrogen
10.5% Carbon Dioxide
1.5% Carbon Monoxide
1.5% Hydrogen
A rich exo-gas is, generally speaking, comprised of approximately:
71.5% Nitrogen
5.0% Carbon Dioxide
12.5% Hydrogen
10.5% Carbon Monoxide
.5% Methane
Upon completion of the combustion process, the gas, now depleted of any oxygen, is cooled to about 120 F and sent to its intended use. Sometimes the gas is dried to a very low dew point and occasionally it is compressed but often it is used as it is produced without further finishing.
Normally, the final dew point of the process gas is approximately 10 F above the cooling water temperature (i.e. 50 F water = 60 F dew point). However, with the addition of refrigerated gas dryers, dew points as low as -40 F are possible. Thermal Dynamix exothermic generators are equipped with Fuel/Air Ratio control valves and variable speed pumps enabling the generator output to be varied in response to demand. Separate electric-ignition pilot systems are provided for push button ease of start up. The combustion chambers are fabricated from rugged, light weight, high performance, ceramic material and are designed to be easily serviced.
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