Qingdao Lenado Intelligent Equipment Co., Ltd. is one of the most reliable manufacturers and suppliers of cng natural gas refueling mother station in China. With a professional production team, we are able to meet the needs of the majority of our customers. Welcome to wholesale bulk customized cng natural gas refueling mother station from our factory.
Products Description
As the critical hub connecting upstream natural gas pipelines to downstream distribution networks, our CNG Mother Station engineering solution is designed for reliability, safety, and high-volume throughput. Whether you are supplying a network of daughter stations or fueling a large local fleet, our turnkey designs ensure a stable gas supply chain from intake to dispensing.
We specialize in the full lifecycle of CNG station engineering, covering process flow design, master layout planning, core equipment selection, and safety system integration. Our stations are engineered to process raw natural gas from urban high-pressure pipelines, purifying and compressing it to meet strict vehicular fuel standards.
The Core Process: From Pipeline to Vehicle
Our engineering approach follows a rigorous, multi-stage process to ensure gas quality and operational efficiency:
Gas Intake & Pre-treatment
Natural gas enters the station at 0.4-1.6 MPa. It immediately undergoes precision filtration to remove impurities and flow metering for accurate accounting
01
Purification & Dehydration
This is a critical stage. We utilize advanced molecular sieve dehydration units (typically a double-tower switching process) to lower the atmospheric dew point to ≤ -60°C. This prevents hydrate formation and corrosion in high-pressure storage, ensuring the gas meets the GB18047 standard for vehicle use.
02
High-Pressure Compression
The heart of the mother station is the compression system. We utilize robust 4-stage reciprocating compressors to boost pressure to 25 MPa. These units often feature variable frequency drives (VFD) to match motor speed with gas load, significantly reducing electricity consumption.
03
Storage & Dispensing
Compressed gas is stored in high-pressure underground wells or cylinder groups. From there, it is dispensed via priority panels to CNG tube trailers (for transport to daughter stations) or directly to CNG vehicles via high-flow dispensers.
04
We place importance on...
Safety & Automation
Safety is non-negotiable. Our designs integrate a comprehensive SCADA and PLC control system that monitors pressure, temperature, and flow in real-time. In the event of a leak or parameter deviation, the ESD (Emergency Shutdown System) automatically cuts off gas sources and activates interlocks. The facility layout strictly adheres to fire safety codes, separating explosion-hazard zones (compression, storage) from auxiliary areas, and includes high-altitude venting and dry powder fire suppression systems.
Environmental & Economic Efficiency
We understand the importance of operational expenditure (OPEX). Our designs incorporate noise reduction materials in compressor rooms to keep boundary noise below 60dB. Furthermore, we offer optional waste heat recovery systems that capture heat generated during compression to produce hot water or steam, improving overall energy utilization.
Technical Specifications
| Parameter | Specification |
|---|---|
| Design Capacity | 50,000 - 300,000 Nm³/d (Adjustable) |
| Inlet Pressure | 0.4 - 1.6 MPa |
| Discharge Pressure | 25 MPa |
| Gas Quality Standard | GB18047 (Vehicle Use) |
| Dew Point | ≤ -60°C (at atmospheric pressure) |
| Compression Stages | 4-Stage Reciprocating |
| Power Consumption | ~0.3 - 0.5 kWh/Nm³ |
| Control System | PLC + SCADA with Remote Monitoring |
Key Advantages
High-Efficiency Compression: Utilization of 4-stage reciprocating compressors with VFD technology ensures stable pressure output while minimizing energy waste ("big horse pulling small cart" scenarios).
Advanced Dehydration: Our molecular sieve units ensure a dew point of -60°C, effectively protecting downstream storage vessels and vehicle engines from moisture damage.
Dual-Output Flexibility: The station is designed to simultaneously fill CNG tube trailers for distribution and local CNG vehicles, maximizing revenue streams.
Intelligent Automation: The integrated SCADA system allows for unattended or low-staff operation, providing real-time data on flow, pressure, and equipment status.
Robust Safety Architecture: Features include ESD emergency cut-offs, combustible gas detection, and explosion-proof electrical fittings, ensuring compliance with strict safety regulations (SY/T 6458).
Application Scenarios
City Gate Stations: Located at the entry point of urban gas pipelines to supply a wide network of satellite daughter stations via tube trailers.
Industrial Hubs: Serving large industrial parks where heavy-duty CNG trucks and forklifts require a dedicated, high-volume refueling source.
Pipeline Interconnection: Areas lacking direct high-pressure gas access, where the mother station acts as the primary compression and storage buffer for the local grid
FAQ
Q: What is the typical footprint for a mother station?
A: Generally, a station with a capacity of 50,000-300,000 Nm³/d requires a plot of approximately 3,000 to 5,000 square meters to accommodate the process area, storage, filling islands, and fire safety setbacks.
Q: Can you customize the equipment configuration?
A: Yes. We offer flexible configurations based on your budget and needs, including choices between domestic or imported compressors, underground gas storage wells vs. above-ground cylinder groups, and standard vs. waste-heat recovery systems.
Q: How is the gas quality controlled?
A: We strictly control the H₂S content (≤ 20 mg/m³) and Methane number (≥ 95%) through our pre-treatment and purification units, ensuring the final CNG product is clean, efficient, and non-corrosive.
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