Gas Generation Equipment

Gas generation equipment provides an onsite supply of gas, vapor, or humidity (water vapor). It eliminates the need for delivery in gas cylinders, which can be bulky and may have special storage requirements. Gas generation equipment may provide a continuous supply of high-purity gas from existing compressed air. Products can be used in a variety of applications. Choices include military, wastewater treatment and disinfection, odor control, chromatography, general laboratory, air pollution and calibration. Gas generation equipment technologies include endothermic, exothermic, dissociation, cryogenic, membrane or molecular sieve, vacuum pressure swing adsorption (VPSA) and water electrolysis or electrolytic.

Most gas generation equipment provides one of six commonly used gas types. These include chlorine dioxide, hydrogen, humidity or water vapor, nitrogen, ozone, oxygen, and zero air. Humidity generation equipment provides a reliable humidity source value or environment for testing analytical instrumentation, materials, calibrating humidity sensor or instruments. Chlorine dioxide has many uses in wastewater treatment applications as a disinfectant and odor controller. Hydrogen is a flammable gas that has many uses in chromatography and other laboratory applications. Nitrogen is a safe, inert, nonflammable gas that has many uses in industry. Ozone generators are used to control indoor air pollution and to treat wastewater. Oxygen generators are used to provide a continuous supply of oxygen for various applications. Zero air or pure air is most often used for calibration purposes. The air can also be used for valves, solenoids, and other process equipment.  Other gas generation equipment is used with ammonia, argon and helium.

There are several parameters that are important in specifying gas generation equipment.  These include concentration, purity, flow rate, inlet pressure and outlet pressure.  Concentration refers to the gas generated and is usually expressed in parts per million (ppm). The purity of the gas generated is expressed as a percentage. The flow rate is the flow out of the generator of the gas generated.  Inlet pressure refers to the maximum pressure of inlet gas that the generator can withstand. Outlet pressure refers to the maximum outlet pressure of the gas generated that the generator can withstand.

Features common to gas generation equipment includes portability, overheat shutdown to protect the internal components from high temperatures, optional air compressors, and replaceable desiccant cartridges to ensure minimum humidity.  Some gas generation equipment may also produce liquid gas products in addition to gaseous products.

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