LNG Regasification & Pressure Regulating Solution

Solution Description

The LNG Regasification & Pressure Regulating Solution provides an integrated gas supply package for applications where LNG is used as the natural gas source.

LNG is vaporized through the vaporization system and converted into gaseous natural gas. The gas is then conditioned through the pressure regulating section to meet the required downstream pressure. Depending on project requirements, the system can also integrate gas metering, odorization, safety protection, instrumentation and electrical control.

The solution can be configured for connection to city gas distribution networks, industrial gas pipelines and other downstream natural gas users.

Typical System Functions

The system can be engineered to incorporate the following functions:

• LNG vaporization

• Pressure regulation

• Gas flow metering

• Gas odorization

• Safety shut-off and pressure relief

• Pressure and temperature monitoring

• Electrical and instrumentation control

• Remote monitoring interface where required

The final configuration depends on gas flow capacity, inlet and outlet pressure, LNG supply conditions, site conditions and project specifications.

Vaporization and Pressure Regulation

An ambient air vaporizer is used in the illustrated configuration to convert LNG from the liquid phase into gaseous natural gas.

After vaporization, the natural gas passes through the pressure regulating section, where the gas pressure is reduced and controlled according to downstream requirements.

For the reference configuration shown on this page, the rated gas flow is 5,000 Nm³/h, with an inlet pressure of 0.6–0.8 MPa and an outlet pressure range of 0.2–0.4 MPa.

Metering and Odorization

Gas metering and odorization can be integrated into the package according to project requirements.

The metering section provides gas flow measurement for operational monitoring and gas supply management, while the odorization system introduces odorant into the natural gas stream where required for downstream gas distribution applications.

Safety and Control

Depending on the selected configuration, the system can incorporate safety and control components including:

• Low-temperature liquid-phase safety valve

• Gas-phase safety and pressure relief devices

• Cryogenic emergency shut-off valve

• Gas-phase overpressure shut-off protection

• Static grounding

• Explosion-protected field junction boxes

• Pressure, temperature and liquid-level monitoring

• Electrical operating parameter monitoring

Relevant operating signals can be integrated into the control and monitoring system according to the project control philosophy.

Skid-Mounted Configuration

The integrated skid-mounted arrangement combines major process and control components into a compact package. This can simplify site installation and system integration compared with installing individual components separately.

Equipment layout, piping arrangement, instrumentation and control configuration can be engineered according to site conditions and project requirements.

Typical Applications

This solution can be applied to:

• LNG satellite stations

• City gas supply systems

• Industrial natural gas supply

• Areas without direct pipeline gas access

• Temporary or supplementary LNG gas supply systems

• Project-specific LNG regasification applications

Customized Engineering

HUAYI can configure the LNG regasification and pressure regulating system according to project-specific requirements, including:

• Required gas flow capacity

• LNG supply conditions

• Inlet and outlet pressure

• Ambient and site conditions

• Metering requirements

• Odorization requirements

• Control and communication requirements

• Applicable project specifications and standards

For project evaluation, customers are encouraged to provide the required gas capacity, LNG supply conditions, outlet pressure, site conditions and downstream gas application.