CNG PRESSURE REDUCING UNIT (PRU) STATION INSTALLATION
❖ What is CNG?
CNG (Compressed Natural Gas) is natural gas extracted from natural gas fields or found alongside crude oil during extraction. It undergoes a cleaning process to remove impurities and heavy components, then transported through pipelines to compression plants or directly compressed into CNG transport vessels.
❖ Components of the SNG System
The LPG/Air Mixing Station, also known as the SNG Station or Mixer System, includes the following main components:
- LPG source: Can be LPG C3/C4, pure propane, or pure butane.
- Mixing gas source: Typically compressed air or inert gas (N2) to reduce the calorific value of LPG.
- Mixer station: For both LPG and Air streams.
+ Pressure regulator
+ Flow meter
+ Flow control valve
+ Temperature, pressure, and differential pressure sensors
+ Inlet gas filter
+ Liquid separator
+ Valves, pipelines, and fittings
+ Automatic emergency shutdown valve
- Air compressor
- Gas dryer
- Sampling system: Post-mixing sample system
- Wobbe index and calorific value measurement system
- Automatic control system
- Power supply
- Test discharge system
- Post-mixing gas storage tank
❖ Installation Process:
- Sub-station topographic investigation
- Provision of preliminary design, layout drawings showing installation positions, enclosed wall and foundation for PRU station
- Detailed schedule outlining construction, installation, testing, validation timelines, and necessary legal procedures
- Installation of gas pipelines from the station to gas-consuming equipment
- Construction of PRU station infrastructure: fencing, concrete foundation pouring, water system, electrical system
- Provision of complete documentation including PRU station drawings, fire protection plan description (PCCC), coordination operation procedures
- PRU station installation
- Commissioning
- Acceptance testing and handover
Proudly establishing our position in the Gas/Energy market in Vietnam and the region, Phuc Sang Minh commits to delivering projects that meet quality standards, technical requirements, ensuring sustainability and high utility value.
Contact Phuc Sang Minh for further information and advice! We look forward to collaborating with you.
