Skid-mounted natural gas liquefaction system adopts modular integration technology, integrating pre-treatment and pressure regulation, deep purification, hybrid refrigeration and liquefaction as well as intelligent storage and transportation, and the core unit is highly integrated through standardised skid blocks (12m×3m×3.5m). For the scenario of daily processing capacity of less than 30,000 cubic metres, the first compressor and cold box integrated design eliminates the on-site refrigerant pipeline connection, reducing the risk of leakage by 90%, and the overall system occupies 40% less space than traditional equipment. Through the flexible combination of 3-6 standard skids, the system can be expanded to 300,000 m3/day processing capacity, which is suitable for the development of marginal gas fields, shale gas wells and other decentralised gas sources.
The system covers five major application dimensions:
(1)
dynamic peaking of urban gas pipeline network;
(2)
resource utilisation of associated gas from oil fields;
(3)
recovery of scattered gas from remote gas wells;
(4)
efficiency improvement of unconventional gas such as coal bed methane/biogas;
(5)
low-carbon conversion of industrial tail gas.
The core technology adopts a three-stage process chain: molecular sieve double-tower dehydration to make the gas dew point ≤ -70℃, nitrogen-methane cascade refrigeration to optimise the energy consumption by 18%, and BOG recondensation technology to ensure the liquefaction rate of more than 98%.
The core advantages are embodied in the ‘four poles’ characteristics:
Extremely simple deployment
factory pre-installation rate of 95%, on-site within 7 days to complete the group skid;
Extremely Intelligent Operation and Maintenance
5G Internet of Things (IoT) platform for remote control and energy efficiency monitoring;
Extremely fast response
2-4 months delivery cycle, 60% shorter than traditional model;
Extreme Return
modular expansion reduces marginal cost, payback period <24 months.
Applicable to projects processing 1-100,000 tonnes of LNG per year, it has become an efficient mobile solution in the field of distributed gas source development.
Q1: What is the processing capacity of the skid-mounted natural gas liquefaction system?
A1: The system is ideal for daily processing capacities under 30,000 cubic meters. Through flexible combinations of 3-6 standard skids, the capacity can be scaled up to 300,000 cubic meters per day.
Q2: How does the system reduce space and leakage risks?
A2: By utilizing an integrated design for the compressor and cold box, it eliminates the need for on-site refrigerant pipeline connections. This reduces leakage risks by 90% and decreases the overall space footprint by 40% compared to traditional setups.
Q3: What are the main application areas for this skid-mounted system?
A3: The system covers five key areas: urban gas pipeline dynamic peaking, resource utilization of oil field associated gas, recovery of scattered gas from remote wells, efficiency improvements for unconventional gas (like coal bed methane/biogas), and low-carbon conversion of industrial tail gas.
Q4: What core technologies are employed in the process chain?
A4: It features a three-stage process chain: molecular sieve double-tower dehydration (dew point ≤ -70℃), nitrogen-methane cascade refrigeration (optimizes energy consumption by 18%), and BOG recondensation technology (liquefaction rate over 98%).
Q5: What are the "four poles" advantages of this system?
A5: The core advantages are Extremely simple deployment (95% factory pre-installation), Extremely Intelligent Operation and Maintenance (5G IoT platform), Extremely fast response (2-4 months delivery), and Extreme Return (payback period < 24 months).
Q6: What scale of projects is this solution best suited for?
A6: It is designed as an efficient mobile solution for distributed gas source development projects processing between 1,000 and 100,000 tonnes of LNG per year.
Hongke Qingneng
