Natural Gas / LNG / BOG Skid-Mounted Compressors

Natural Gas / LNG / BOG Skid-Mounted Compressors

Modular skid-mounted reciprocating compressors for LNG feed gas, BOG recovery, mixed refrigerant, CNG stations, and wellhead gas boosting — 2–500 Nm³/min, 0.1–32 MPa, API 618. Air-cooled, water-cooled, and combined cooling available.

SKU: 739843080681 Category: Tags: , , , ,

Natural Gas / LNG / BOG Skid-Mounted Compressors

Reciprocating natural gas, BOG, mixed refrigerant, and CNG compressors for the full LNG value chain — from wellhead gathering and coalbed methane capture through to LNG liquefaction plants and CNG refuelling stations.

Flow: 2–500 Nm³/minPressure: 0.1–32 MPaPower: 5.5–8,000 KWAPI 618

Product Overview

The rapid growth of domestic LNG liquefaction capacity has created sustained demand for reliable, high-performance reciprocating compressors across the full gas chain. Ever Power supplies methane-class combustible gas capture, transport, liquefaction, and recovery compressors — BOG units, mixed refrigerant compressors, CNG packages, and LNG plant feed-gas machines — and these have gained broad industry recognition. Modular skid-mounted packages are available with air-cooled, water-cooled, or combined cooling; fixed-speed, VFD, or soft-start drives; and PLC or DCS control integration. All products comply with API 618 and applicable national standards.

Key Technical Parameters

2 – 500

Flow Capacity (Nm³/min)

0.1 – 32.0

Discharge Pressure (MPa)

5.5 – 8,000

Motor Power (KW)

1.5 – 150 T

Piston Force

Natural gas / BOG / Mixed refrigerant / CNG

Media

M / D / P / L / Z

Frame Types

Natural Gas / LNG / BOG Skid-Mounted Compressors — Key Technical Parameters

Low & Medium Pressure Natural Gas Compressor Specifications (0.1–0.6 MPa inlet, up to 0.8 MPa discharge)

Low-pressure natural gas · Voltage: 380 V or 6 kV/10 kV
No. Model Pattern Flow (m³/min) Discharge Pressure (MPa) Power (KW) Weight (t)
1 DW-300/1 2-col 1-stage 300 0.10 550 14
2 HW-600/1 4-col 1-stage 600 0.10 1,100 30
3 LW-20/2 2-col 1-stage 20 0.20 75 1.8
4 DW-290/2 2-col 1-stage 290 0.20 1,000 17
5 DW-325/2 2-col 1-stage 325 0.20 1,100 18
6 DW-200/2.2 2-col 1-stage 200 0.22 650 15
7 LW-40/2.5 2-col 1-stage 40 0.25 160 3.4
8 DW-290/2 2-col 1-stage 290 0.25 1,000 17
9 LW-60/2.5 2-col 1-stage 60 0.25 240 (250) 4.82
10 DW-60/4 2-col 2-stage 60 0.40 200 (240–250)
11 DW-68/4 2-col 2-stage 68 0.40 315 6.8
12 D-120/4 2-col 2-stage 120 0.40 630 13.5
13 DW-130/4 2-col 2-stage 130 0.40 630 13.5
14 DW-150/4 2-col 2-stage 150 0.40 710 18
15 DW-60/6 2-col 2-stage 60 0.60 350 6
16 DW-100/6 2-col 2-stage 100 0.60 550 13
17 DW-116/6 2-col 2-stage 116 0.60 (inlet) 630 13
18 4MW-180/6.5 4-col 2-stage 180 0.65 1,000 26
19 4MW-240/6.5 4-col 2-stage 240 0.65 1,300 26

Medium & High Pressure Natural Gas Compressor Specifications (1.8–9.0 MPa discharge)

Medium / high-pressure natural gas · Voltage: 380 V or 6 kV/10 kV
No. Model Pattern Flow (m³/min) Discharge Pressure (MPa) Power (KW) Weight (t)
1 LW-6/18 2-col 2-stage 6 1.80 65 1.8
2 LW-6/18 2-col 2-stage 6 1.80 65 1.8
3 LW-10/18 2-col 2-stage 10 1.80 110 3
4 ZW-5.5/24 (skid) 3-col 3-stage 5.5 2.40 75 3.5
5 ZW-4/25 (skid) 3-col 3-stage 4 2.50 55 —
6 LW-16/30 2-col 3-stage 16 3.00 110 3
7 LW-25/30 2-col 3-stage 25 3.00 280 6.5
8 DW-25/30 2-col 3-stage 25 3.00 280 6.5
9 DW-35/30 2-col 3-stage 35 3.00 400 11
10 LW-20/30 (skid) 2-col 3-stage 20 3.00 240 (250) 6
11 LW-20/36 (skid) 3-col 3-stage 20 3.60 250 9.5
12 DW-46/30 2-col 3-stage 46 3.00 550 11.5
13 DW-25/40 (30) 2-col 4-stage 25 4.00 (3.00) 315 (280) 6.5
14 DW-35/40 (30) 2-col 4-stage 35 4.00 (3.00) 450 (400) 11
15 DW-60/40 (30) 2-col 4-stage 60 4.00 (3.00) 600 (550) 17
16 DW-70/40 (30) 2-col 4-stage 70 4.00 (3.00) 850 17
17 4MW-85/40 (30) 4-col 4-stage 85 4.00 (3.00) 1,000 26
18 4MW-120/40 (30) 4-col 4-stage 120 4.00 (3.00) 1,400 26
19 DW-46/40 2-col 4-stage 46 4.00 600 11.5
20 LW-20/36 3-col 3-stage 20 3.60 250 9.5
21 ZW-2/69 (skid) 3-col 3-stage 2 6.00 45 —
22 4MW-85/30 (40) 4-col 4-stage 85 4.00 (3.00) 1,000 26

Key LNG / BOG / Mixed Refrigerant Models

Model Application Flow (Nm³/min) Discharge Pressure (MPa)
DW-30/15-52 Natural gas — LNG plant 30 15–52
4MW-36/24-70 Natural gas — large LNG feed 36 24–70
4MW-48/2.6-29 Mixed refrigerant 48 2.6–29
DW-22/25 BOG — LNG terminal 22 2.5
D186H70-220 BOG — diaphragm type — 220
DW-21.4/2.9-23 Natural gas — LNG plant feed 21.4 2.9–23
LW-51/6 LNG feed gas — raw material 51 0.60
LW-6/18 CNG / wellhead boosting 6 1.80
DW-18/1.5-50 Natural gas — steam-driven turbine 18 1.5–50
Natural Gas / LNG / BOG Skid-Mounted Compressors — Key LNG / BOG / Mixed Refrigerant Models

Applications

LNG Liquefaction Plant Feed Gas

Feed-gas compression from pipeline pressure to cold-box inlet conditions in LNG liquefaction plants — continuous 24/7 duty, API 618 design.

❄️

BOG Recovery at LNG Terminals

Low-pressure boil-off gas recompression at LNG import/export terminals and storage facilities to prevent venting and recover fuel value.

️

Mixed Refrigerant Circulation

Warm and cold stage mixed refrigerant compression in LNG and NGL liquefaction refrigeration cycles.

⛽

CNG Refuelling Stations

Natural gas compression to 20–25 MPa for compressed natural gas vehicle refuelling. Skid-mounted packages with integrated station control.

⛏️

Wellhead Gas Boosting

Low-pressure wellhead gas gathering and boosting for onshore and offshore natural gas fields, coalbed methane, and shale gas production.

Coal Seam / Coalbed Methane

Methane capture and compression from coal seam gas drainage systems for pipeline injection or power generation.

Offshore Platform Compression

Compact, corrosion-resistant skid packages for offshore platform gas lift, gas injection, and associated gas recovery.

Biogas Upgrading

Natural gas-quality biogas compression for grid injection after upgrading from landfill or anaerobic digestion sources.

For CO₂ handling in the same LNG or gas processing facility, see our CO₂ Compressors for Carbon Capture, Recovery & Liquefaction — designed for the same demanding duty cycles.

Customer Case Studies

★★★★★

"We specified DW-21.4/2.9-23 feed-gas compressors for a 300,000 t/a LNG plant. Commissioning went smoothly and the units hit rated flow on first start. After 26 months, availability has averaged 99.1%."

China · LNG Liquefaction Plant

LNG plant feed-gas compression · 5.0 / 5

★★★★★

"BOG compressors at our import terminal needed to handle variable boil-off rates from eight tanks simultaneously. The modular DW-22/25 arrangement with automatic lead-lag sequencing handles peak and trough BOG rates without manual intervention."

Australia · LNG Import Terminal

BOG recompression at storage tanks · 5.0 / 5

★★★★☆

"We rolled out 18 CNG station packages across a national refuelling network. The skid-mounted configuration with integrated PLC control simplified site installation. The units have maintained over 98% uptime across the network."

Pakistan · CNG Refuelling Network Operator

CNG station compression packages · 4.0 / 5

Frequently Asked Questions

What is the difference between a BOG compressor and a feed-gas compressor in LNG service?
BOG (boil-off gas) compressors handle low-pressure vapour evaporating from LNG storage tanks — typically at -160 °C boil-off temperature and very low suction pressure (near atmospheric). Feed-gas compressors take pipeline-pressure natural gas and compress it to the inlet conditions of the liquefaction cold box. Both are designed for different mechanical and thermal duty cycles.
Can these compressors handle sour natural gas (H₂S content)?
Yes, for specified H₂S concentrations. Material selection — including valve trim, piston rod, and packing materials — is upgraded to NACE MR0175/ISO 15156 sour-service requirements. H₂S concentration, CO₂ content, and temperature must be specified at enquiry stage.
What is a mixed refrigerant compressor and where is it used?
In LNG liquefaction plants, the refrigeration cycle uses a mixture of nitrogen, methane, ethane, propane, and heavier hydrocarbons as refrigerant rather than a pure component. The mixed refrigerant (MR) compressor handles this blend through the warm and cold stages of the refrigeration cycle. Composition can vary during plant startup or load changes — the compressor must handle the resulting variation in molecular weight and compressibility.
Are these available as CNG station packages?
Yes. CNG compressor packages for natural gas refuelling stations are available in skid-mounted configurations with VFD or fixed-speed drives, integrated sequencers for cascade storage management, gas detection systems, and PLC-based station control panels.
What cooling options are available for remote or offshore locations?
Air-cooled, water-cooled, and air-water combination cooling are all available. For remote locations without cooling water, air-cooled packages with fan-cooled interstage and aftercoolers are standard. For offshore platforms, compact footprint and corrosion-resistant finishes are specified per project requirements.
Handling hydrogen alongside natural gas at the same facility? Our Hydrogen & Hydrogen Energy Compressors cover H₂ process, storage, and refuelling station compression duties.

Ready to Move Forward?

Provide your natural gas composition, inlet conditions, required discharge pressure, flow rate, and site location — our engineering team will size the appropriate skid package and return a full technical and commercial proposal within 48 hours. Custom configurations for sour service, arctic environments, and offshore installation are handled in-house.

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