5 MMSCFD Natural Gas Liquification Skid Mounted LNG Plant Natural Gas Purification Skid
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$4,980,000.50
SPECIFICATIONS
Brand Name: Hengzhong
Core Components: Pressure vessel,DCS,Dehydration unit,Hg removal,Acid gas removal
Dimension(L*W*H): Various
Key Selling Points: Energy saving
Machinery Test Report: Provided
Place of Origin: Sichuan, China
Production Rate: 110%
Use: natural gas, biogas, oil gas
Video outgoing-inspection: Provided
Voltage: 380v,or customized
Warranty: 1 Year
Weight: 40000 KG
(-260°F) for efficient storage and transportation. With a high methane content (90%+), our LNG ensures clean combustion, low emissions, and superior energy output for various industrial and commercial applications.
✅ Certified & Safe – Compliant with ISO, ASTM, and international LNG standards
✅ Competitive Pricing – Bulk supply with flexible contracts
✅ Global Shipping – Secure cryogenic tanker & ISO container delivery
1.Process system
1.1. Gas Extraction & Treatment
* Source: Natural gas is extracted from underground reserves (conventional or shale gas) or as associated gas from oil fields.
* Purification: Impurities (water, CO₂, sulfur, heavy hydrocarbons) are removed to prevent freezing and corrosion during
liquefaction.
2. Liquefaction Process
The purified gas is cooled in stages using refrigeration cycles (common methods include):
* Cascade Process – Uses multiple refrigerants (propane, ethylene, methane) for high efficiency.
* Mixed Refrigerant (MR) Process – A single blended coolant for simpler operation.
* Nitrogen Expansion – Ideal for small-scale LNG plants.
Key Steps:
✔ Pre-cooling: Gas is chilled to intermediate temperatures (~-30°C to -50°C).
✔ Liquefaction: Further cooled to -162°C, converting methane into a clear, odorless liquid.
✔ Sub-cooling: Ensures LNG remains stable for storage.
3. Storage & Loading
* LNG is stored in double-walled cryogenic tanks (insulated to minimize boil-off gas).
* Loaded onto specialized LNG carriers (with insulated hulls) for transport.
4. Transportation & Regasification
* Shipping: LNG is transported via cryogenic tankers to global markets.
* Regasification: At destination terminals, LNG is warmed back to gaseous state for pipeline distribution.
1.1.1 feed gas pretreatment unit
The process method of feed gas pretreatment unit has the following characteristics:
De-acidification with MDEA solution has the merits of small foaming, low corrosiveness and small amine loss.
Molecular sieve adsorption is used for deep dehydration, and it still has high adsorption advantage even under low water vapor partial pressure.
Using sulfur-impregnated activated carbon to remove mercury is cheap in price. Mercury reacts with sulfur on sulfur-impregnated activated carbon to produce mercury sulfide, which is adsorbed on activated carbon to achieve the purpose of mercury removal.
Precision filter elements can filter the molecular sieve and activated carbon dust below 5 m.
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1
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Feed gas filtration separation and regulating unit
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Feed gas filter separator, flowmeter, pressure regulator, feed gas compressor
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2 |
Pretreatment |
Absorber and regenerator
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Adsorption tower, regeneration heater, regeneration gas cooler and regeneration gas separator
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Heavy hydrocarbon removal unit
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Adsorption tower
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Mercury removal and filtration unit
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Mercury remover and dust filter
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3
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Liquefaction unit
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Cold box, plate heat exchanger, separator, denitrification tower
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4
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Mixed refrigerant refrigeration unit
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Refrigerant circulating compressor and refrigerant proportioning tank
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5
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LNG loading unit
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Loading system
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6
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Bog recovery unit
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Bog regenerator
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7
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Storage tank
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According to customer requirements
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In order to effectively monitor the production process of the complete set of equipment, and to ensure reliable operation and convenient operation and maintenance, the instrument control system mainly includes:
Distributed control system (DCS)
safety Instrument system (SIS)
Fire Alarm and Gas Detector System (FGS)
Closed-circuit television (CCTV)
Analysis system
3. Utility system
A. Power Generation & Distribution
* Gas Turbines/Generators: Often fueled by boil-off gas (BOG) from LNG storage to maximize efficiency.
* Electrical Grid Backup: Ensures uninterrupted operations during outages.
* Waste Heat Recovery: Captures excess heat for steam generation or absorption cooling.
B. Cooling Systems
* Refrigeration Units: Provide sub-zero cooling for liquefaction cycles (e.g., propane pre-cooling, mixed refrigerant loops).
* Seawater/Air Coolers: Used for heat rejection in condensers and auxiliary equipment.
* Cryogenic Cooling: Maintains LNG at -162°C during storage/loading.
C. Water Treatment & Steam Generation
* Demineralized Water System: Supplies high-purity water for steam and process needs.
* Boilers: Generate steam for turbines, heating, and gas treatment.
* Wastewater Management: Treats process effluents to meet environmental standards.
D. Instrument Air & Nitrogen Systems
* Compressed Air: Powers control valves, pneumatic tools, and safety systems.
* Nitrogen (N₂) Generation: Used for inerting, purging, and leak testing to prevent combustion risks.
E. Fuel Gas & BOG Management
* Boil-Off Gas (BOG) Recovery: Re-liquefies or redirects vaporized LNG to power generation.
* Fuel Gas Conditioning: Adjusts pressure/composition for turbines and heaters.
We provide solutions and equipment for the below.
Wellhead treatment equipment
Natural gas conditioning equipment
LPG & NGL extraction package
LNG Plant
Gas generator set
We have been in this field for more than 20 years. Our products have been sold almost all over the world. We allow 3rd party inspections before shipment (on buyer's account) And we can supply certificate of quality accordingly. We also have a matching quality control system that strictly controls product safety before leaving the factory.
Can I customize the logo?
If you do not require, we will use our own brand, if you require custom logo, we can also provide this service.
What is your MOQ?
one set.
How long can you provide warranty?
For no special reason, we provide a 1-2 year warranty. At the same time, if you have problems during use, we provide technical assistance.
In general, it will take 35-90 days after receiving deposit. The specific delivery time depends on the items and quantity of your order.
ASME,GB
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