BTU-1 Boil-Off Gas Liquefaction System

The BTU-1, ensures unlimited storage time, avoids venting into the atmosphere and guarantees a perfectly conditioned liquid for your station:

• High-capacity onsite liquification up to 48 Nm3/h.
• Minimal start-up time
• Integrated PLC with control logic for autonomous operation.
• Removes the need for active management of storage pressure and eliminates the need for Nitrogen consumption and logistics, significantly reducing the required man-hours, energy consumption, and total cost of ownership
• Allows for minimal civil works and onsite constructive time, and even has possibility to be relocated.
• Plug & Play modular design. Can work with any LNG storage tank with a liquid and vapour connection

Design Specifications (BTU-1)

                               input                                       output
Design pressure:     3.0 – 10.0 barg                        3.0 – 10.0 barg
Design temperature: -150c to -120c                      -145c to -122c
Vapour fraction:       100%                                    0%
Medum Composition: Boil-Off Gas from LNG           LNG
Methane (CH4)        > 90mol%                             > 98.3mol%
Ethane (C2H6)        < 0.5mol%                            < 0.1mol%
Hydrocarbons >C2   < 0.1mol%                            < 0.1mol%
Carbon Dioxide (CO2) < 50ppm                             < 50ppm
Nitrogen (N2)             < 10mol%                          < 1.7mol%

Design Specifications (BTU-1)
Outside temperature: -25C to +35C
Humidity (RH): Max 85%
Earth-quake zone: Eurocode 8
Max wind load: 160 km/h

Design Codes
PED 2014/68/EU Pressure Equipment Directive
ATEX 114 and 153 EX-standards EC94/9/EC
Type Certificate Model B
ASME VIIII & AD2000
EN1473

General Specifications (BTU-1)
Required power supply: 400V 3-phase+N+E/50Hz max 100 amp
Installed power: 37 kW
Compression: Gas compressor
Cooling: Cascade cooling configuration
Refrigerants: Natural refrigerants for GWP reduction directive
System Connections
BOG feed connection Three-piece 3⁄4” coupling
welded to BTU/VIP piping
LNG return connection Three-piece 3⁄4” coupling
welded to BTU/VIP piping

Process Design
Start-up time: 10 – 30 minutes
Feed capacity: 35 kg/h BOG input (max 48 Nm3/h)
Production capacity: 17.7 to 22.0 kg/h
Energy usage: .56 kWh/kg feed gas

BTU-1 Remote Performance Management

We offer an extensive suite of remote services, including remote
performance management of your BTU-1 unit to ensure superior
availability to maximize re-liquefaction.