NGL Production Line Process Package LNG Liquefaction Plant Integrated Joint Device

Product Attributes
 

This Integrated Process Package for Natural Gas Liquids (NGL) Recovery & Liquefied Natural Gas (LNG) Production is a mature, high-efficiency and customizable solution for the full value-chain development of natural gas resources. Taking raw wellhead natural gas as feed, the plant adopts a full-process design including deep purification, fractionation recovery, cryogenic liquefaction, environmental protection treatment and utility support. It simultaneously produces high-purity LNG, ethane, propane, butane (LPG), stable light hydrocarbons and other high-value-added products, while realizing compliant emission of acid gas.
It balances resource utilization, economic benefits and environmental compliance, suitable for onshore natural gas processing plants, LNG liquefaction plants, oilfield associated gas recovery and utilization. Customized process design and full technical delivery can be provided according to feed gas composition, processing capacity, product specifications and site conditions.

Core Process Units & Technical Principles

1.Feed Gas Pretreatment Unit
As the foundation of the whole process, this unit mainly realizes pressurization, purification and dehydration of raw gas to supply qualified gas for subsequent fractionation and liquefaction.
Inlet Compression Unit: Adopts multi-stage centrifugal or reciprocating compressors to boost low-pressure wellhead gas to required operating pressure. Equipped with inlet separators, coolers and buffer tanks to remove free liquids and solid impurities, preventing abrasion and corrosion to downstream equipment and ensuring stable system operation.
Gas Sweetening Unit: Applies mature amine absorption process (MDEA/MEA) to deeply remove acid components such as H2S and CO2 from raw gas. Purified gas will meet H2S ≤4 ppm and CO2 ≤50 ppm, satisfying LNG product and pipeline transportation standards while avoiding corrosion to cryogenic equipment.
MEG Regeneration Skid: Uses monoethylene glycol (MEG) injection to prevent hydrate formation and blockage under low-temperature conditions. The supporting MEG regeneration unit realizes recycling of MEG through distillation and dehydration, reducing chemical consumption and ensuring continuous stable operation of the cryogenic system.
2.NGL Fractionation & Recovery Unit
This unit is the core for high-value utilization of natural gas, gradually separating light hydrocarbon components through multi-stage distillation to produce various chemical raw materials and energy products.
Deethanizer Skid: Separates ethane from purified gas under controlled pressure and temperature. High-purity ethane can be used as cracking material for ethylene or recycled. Top gas is condensed and partially refluxed, while bottom liquid is sent to depropanizer.
Depropanizer Skid: Conducts secondary distillation to separate propane, which can be sold as commercial LPG or used as refrigerant for the propane refrigeration cycle. Bottom liquid is sent to debutanizer for further separation.
Debutanizer Skid: Final distillation to separate n-butane and isobutane (high-purity LPG products). Bottom stream produces stable light hydrocarbons (C5+), applicable as gasoline blending component or chemical feedstock, realizing full recovery of heavy hydrocarbons.
3. Propane Refrigeration & LNG Liquefaction Unit
As the core cold source and liquefaction center, it adopts proven propane pre-cooling refrigeration technology to provide stable cooling capacity for natural gas liquefaction.
Propane Refrigeration Skid: Uses propane as refrigerant to form a closed refrigeration cycle through compressors, condensers, evaporators and throttle valves. It cools purified natural gas to approximately -162°C for liquefaction, reducing volume by about 625 times for easy storage and transportation. High-efficiency heat exchange and cold recovery optimize energy efficiency.
LNG Liquefaction & Storage System: After pre-cooling, natural gas is further liquefied in the main cryogenic heat exchanger to produce LNG meeting GB/T 19204-2003. Supporting LNG tanks, pumps and vaporizers realize storage, transmission and truck loading.
4. Environmental Protection & Tail Gas Treatment Unit
In response to global environmental policies, the unit ensures compliant emission and avoids pollution.
Acid Gas Incineration Unit: Performs high-temperature incineration of acid gas containing HS from the sweetening unit, converting HS into SO. With tail gas treatment (caustic washing, desulfurization), emission of SO, NOx and other pollutants meets local standards (EU 2015/2193, China GB 18484-2020), realizing clean production.
5. Utility & Auxiliary Systems
Provide full supporting guarantee for stable and safe operation:
Water Supply Package: Supplies process water, domestic water and fire water with water treatment facilities.
Instrument Air Package: Provides dry and clean instrument air for pneumatic instruments and control valves.
Nitrogen Package: Supplies high-purity nitrogen for purging, replacement, sealing and inerting.
Hot Oil Package: Provides stable heat source for distillation towers and regeneration systems with high-efficiency heat recovery.
Shell and Tube Heat Exchangers: General high-efficiency heat exchange equipment applied in the whole process.

Core Technical Advantages

Integrated Design for Full Value-Chain ProfitUnlike traditional single-function natural gas plants, this package integrates pretreatment, fractionation, liquefaction, environmental protection and utilities. One set of equipment produces LNG, ethane, propane, butane and light hydrocarbons simultaneously, maximizing the economic value per cubic meter of natural gas and improving return on investment.
Mature Technology & High ReliabilityAll units adopt industrially proven processes (amine desulfurization, propane refrigeration, multi-stage distillation) with complete standardized equipment datasheets. Parameters are verified by engineering practice, enabling long-term continuous operation and low failure rate.
Highly Customizable & FlexibleCustomizable design is available based on feed gas composition (methane, acid gas, light hydrocarbons), capacity (100,000-5,000,000 Nm³/d), product purity and site conditions, adapting to various gas fields and project requirements.
High Efficiency, Energy Saving & Low CarbonHigh-efficiency heat exchange, cold and heat recovery systems reduce energy consumption and operating costs. Equipped with acid gas incineration and tail gas treatment, it meets global carbon neutrality and environmental standards.
Skid-Mounted & Fast CommissioningCore units (deethanizer, depropanizer, debutanizer, propane refrigeration, MEG regeneration) adopt modular skid-mounted fabrication, realizing factory pre-assembly and on-site installation, greatly shortening construction period and realizing rapid production.
Full Technical Delivery & Lifecycle ServiceProvides one-stop service including process package design, equipment datasheets, PFD, P&ID, installation, commissioning, personnel training and after-sales maintenance, covering the whole project cycle.

Product Specifications & Technical Parameters (Customizable)

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Main Material

Stainless Steel、carbon steel、Nickel and nickel-based alloys、Titanium & titanium alloys、Copper&copper alloys、Zirconium&zirconium alloys, etc...

Production Capacity

Features

High-Quality Construction: Fabricated from the finest premium-grade materials, this vessel is engineered to endure extreme operational conditions while preserving its structural integrity, offering reliability and longevity in even the toughest environments.
Precision Engineering: Expertly designed to manage both positive and negative pressure scenarios, making it the perfect choice for a diverse array of industrial applications, ensuring versatile and adaptable usage.
Rigorous Testing: 100% X-ray testing to ensure our products meet international standards, delivering leak-free performance and offering quality assurance.
Strong adaptability: Engineered to be applicable to a diverse range of materials and working conditions, showcasing versatility and efficiency across various operational environments.

Supply Ability & Additional Information

Supply Ability: 15-90 days 

Certificate: ISO, ASME, GOST, others 

Production Capacity：500 Pieces/Year 

Transportation: Ocean,Rail transport,Land,Others 

Payment Type: T/T, L/C, D/P，Bank Guarantee，Others 

Incoterm:  FOB, FCA, CFR, CIF, FAS, DDP, DAP, Others 

Specification：Customized on Request 

We'll help you configure a system that meets all of your research needs.

Packaging & Delivery

Selling Units: Set/Sets 

Package Type: asked by buyer 

Shipping Preparation: Pickling and passivation for stainless steel parts 

Departure: No.9 Yangtes south Road ( No.1 Bonded Zone ), Yangzhou City, Jiangsu Province, China.