27 December 2024

The Nitrogen Production Unit is an industrial system designed to obtain pure nitrogen gas from atmospheric air. Nitrogen generators essentially work by separating nitrogen molecules from oxygen molecules in compressed air. In a Pressure Swing Adsorption (PSA) system, nitrogen production is achieved by trapping oxygen in the airflow through adsorption. Adsorption occurs when molecules bind to an adsorbent material. In this case, oxygen molecules attach to the carbon molecular sieve (CMS). This process takes place in two separate pressurized tanks, each filled with CMS, enabling a transition between the separation process and the regeneration process.

The PSA Nitrogen Generator System consists of the following equipment:

• Tank Top Screw Air Compressor
• Time-Controlled Discharge Device
• Water Separator
• Air Dryer Inlet Filter
• Gas-Cooled Air Dryer
• Activated Carbon Tower
• Dust Filter
• Nitrogen Generator Inlet Filter
• PSA Nitrogen Generator
• Nitrogen Balancing Tank
• Automatic Purity Control System
• Nitrogen Storage Tank
• Nitrogen Storage Tank Outlet Filter

Equipment Details:

Screw Air Compressor:

• Compressor volume: 500 liters
• Motor power: 7.5 kW
• Produces compressed air at a minimum flow rate of 0.90 m³/min at 10 bar pressure.

Electronic Discharge Device:

• Discharge capacity: 80 l/h

Water Separator:

• Capacity: 235 Nm³/hour
• Automatically discharges condensed water present in the compressed air.

Air Dryer Inlet Filter:

• Capacity: 120 Nm³/hour

Gas-Cooled Air Dryer:

• Capacity: 108 Nm³/hour
• Reduces compressor air to +5°C dew point.

Activated Carbon Tower:

• Capacity: 70 Nm³/hour
• Reduces oil vapor in the air to 0.003 mg/m³.

Dust Filter:

• Capacity: 120 Nm³/hour
• Captures particles up to 3 microns in compressed air and reduces oil vapor to 3 mg/m³.

Nitrogen Generator Inlet Filter:

• Capacity: 120 Nm³/hour
• Captures particles up to 0.01 microns in compressed air and reduces oil vapor to 0.01 mg/m³.

Nitrogen Generator:

• Consists of two tanks filled with CMS (Carbon Molecular Sieve).
• Produces nitrogen gas with a purity of 99.999%, flow rate of 6 Nm³/hour, and pressure of 7-8 bar.
• The required air for the nitrogen generator is set at a dew point of +3°C to +5°C.
• The air inlet of the nitrogen generator includes an air regulator, while the nitrogen tank outlet includes a flow adjustment valve and a pressure regulator.

Nitrogen Balancing Tank:

• Tank volume: 300 liters
• Minimum pressure: 10 bar

Automatic Purity Control System:

• A system designed to prevent low-purity nitrogen from being sent to the system if the purity of the nitrogen gas is compromised.

Nitrogen Storage Tanks (2 units):

• Tank volumes: 300 and 1000 liters
• Minimum pressure: 10 bar

Nitrogen Storage Tank Outlet Filter:

• Capacity: 75 Nm³/hour
• Captures particles up to 3 microns in compressed nitrogen gas.