H2 Electrolyzers

Electrolysis

Electrolysis process description

Purpose of the plant is production of hydrogen and oxygen. A regular water flow enters in the electrolytic cells where ( through an electric current ) regular the following electrochemical reaction.

H2O -----1/2 O2 + H2

Hydrogen and oxygen, so produced, are stored separately in their proper circuits and tanks. End user can use the required gas quantity proportionally to his needs : the generator provides automatically to deliver the necessary gases (O2 and H2).

Production pressure of both gases is > 4 bar, and it is kept constant by an electronic control equipment.

Plant Description
H2 Hydrogen Generator

H2 Generator is composed by:

The electrolytic cells with support slide and fixing belts in inox steel. All connections and pipelines are in inox steel and chassis in painted carbon steel.
The "Structural tank" in the lower level, in inox steel for restraining of all liquids present in the generator in case of accidental lack.
Skid in carbonium steel, all painted and fixed to the "structural tank" in order to guarantee a complete painting.
Shell composed by four different compartments (A-cells, B transformer, C- electrical and electronics parts, D- electro pneumatics devices.)

Internal tanks in inox steel, with function of bi. phasic separators, with condensators with air and liquid exchangers. Furthermore there are present all the necessary devices for gases treatment, like pressures balancing and regulation automatic discharge system of condenses.

Pipelines and threaded connections in inox steel AISI304. Internal exchangers by tube nest for coolings gases coming out from separators groups.

The process off- gas of the generator, i.e oxygen and hydrogen, will have an external discharge from the cabinet by a proper pipeline

Plant control instruments
In the front side of the generator, inside a separate shaft (insulated from production shaft of the degree IP65), it is installed the electronic control panel with relevant PLC and power interface: in the lower level there in another shaft (separated from the first one) containing power transformer

Performances

Plant Performance

• Hydrogen : 10.66 Nm3/h
• Hydrogen Purity : > 99.999%
• Oxygen : > 98.5%
• Produced gas Pressure : 4 bar (r)