Hydrogen
generators are hydrogen generating systems used widely in gas plants, heat
treatment industries, chemical and process industries, for cylinder filling
and many other applications. The generator is also an excellent source of
ultra pure, dry hydrogen for a wide range of laboratory uses. Hydrogen
generators are hazard-free alternative to high pressure gas cylinders. The
hydrogen generator usually features an ION exchange membrane in which
hydrogen is produced.
Types of Hydrogen Generators
- Ammonia Cracking Hydrogen Generator : This type of generator
is actually a catalytic cracking unit. Here ammonia is dissociated to
hydrogen and nitrogen, where commercial grade liquid ammonia from
cylinders or tank is used as feedstock. The product gas that is produced
which has 75% hydrogen and 25% nitrogen. By removing un-cracked ammonia
and moisture, this gas is further purified in a molecular sieve unit.
The purified hydrogen gas is then used in heat treatment furnaces like
sintering, annealing, and as reducing furnace atmosphere.
- Water Electrolysis Hydrogen Generator : These are compact
type generators producing hydrogen through the process of water
electrolysis. From this process, hydrogen is produced which is of 99.8%
purity, saturated with moisture. It is collected in a gas holder and
then used in process by further compression. A deoxo purification and
molecular sieves dryer can also be installed which can give hydrogen
purity of 99.9999% .
Applications of Hydrogen Generators
- The hydrogen generator is used extensively as a fuel gas with gas
chromatographs for flame ionization detectors (FID).
- It is used a reaction gas for hall detectors.
- It is also used as a carrier gas to provide absolute repeatability of
retention times.
- In high sensitivity trace hydrocarbon analyzers and air pollution
monitors, the generator ensures the lowest possible background noise
when hydrogen is produced.
- Other applications include using hydrogen generators for
hydrogenation reactions etc.
Buying Tips
Specifications to consider are as follows:
- Hydrogen purity
- Maximum hydrogen flow rate
- Oxygen content
- Moisture content
- Delivery pressure
- Electrical requirements
- Hydrogen outlet pressure
- Power consumptions
- Certifications
- Dimensions
Hydrogen
Gas Generator
