In the production, storage and transportation of liquefied natural gas (LNG) and liquefied petroleum gas (LPG), liquefied gas compressors play a vital role. It compresses gas into a liquid state to ensure that the gas can be stored and transported efficiently and safely at low temperature or high pressure. The working principle of the liquefied gas compressor directly affects the gas compression efficiency and the stability of the equipment. Therefore, understanding the working principle and advantages of liquefied gas compressors is essential for choosing the right equipment.
Table of Contents
Working principle of liquefied gas compressors
The basic working principle of liquefied gas compressors is to compress low-pressure gas into high-pressure gas through mechanical devices. This process usually consists of the following steps:
Intake phase: The compressor inhales low-pressure gas (such as natural gas or petroleum gas) from the gas source. At this time, the gas pressure is low and the temperature is relatively low.
Compression phase: The key components of the compressor (such as pistons, screws, impellers, etc.) begin to compress the gas. The compression process significantly increases the pressure of the gas molecules by squeezing them into a smaller space, and at the same time, the temperature of the gas also increases.
Cooling stage: Due to the increase in temperature during the compression process, liquefied gas compressors are usually equipped with a cooling system to help cool the gas, prevent the equipment from overheating, and enable the gas to be handled more stably in subsequent links.
Exhaust stage: After compression and cooling, the high-pressure gas is discharged into a storage tank or a delivery pipeline. At this point, the gas is ready for liquefaction or transportation.

Types of liquefied gas compressors
There are many types of liquefied gas compressors depending on different application requirements. The following are several common types:
Piston compressor: This compressor has a simple and reliable structure and is suitable for the compression of medium and low pressure gases. It is widely used in liquefied petroleum gas (LPG) and small natural gas processing stations.
Screw compressor: This compressor has a high efficiency and is suitable for large-scale liquefied gas production processes. It is often used in large-scale natural gas processing and liquefaction plants and can process large amounts of gas in a short time.
Centrifugal compressor: Mainly used for large-scale gas compression, it has the advantages of high flow and stable operation. It is commonly used in large-scale liquefied natural gas (LNG) production facilities and petrochemical industries.
Application fields of liquefied gas compressors
Liquefied gas compressors are widely used in many industries, especially in the energy and chemical industries. The following are some typical applications of liquefied gas compressors:
Liquefied natural gas (LNG) production: By compressing natural gas, liquefied gas compressors are able to convert natural gas into liquid form for easy storage and transportation. Liquefied natural gas has a high energy density and is one of the important energy sources in the world.
Liquefied petroleum gas (LPG): Liquefied gas compressors compress LPG into liquid form for easy use in homes and industries. LPG is commonly used in gas stoves, heating systems and industrial production processes.
Industrial gas supply: In industries such as chemicals, petroleum and energy, liquefied gas compressors are used to compress various industrial gases such as nitrogen, argon, carbon dioxide, etc. to provide the necessary gas supply for the production process.
Gas transportation and storage: Liquefied gas compressors greatly reduce the space required for transportation and storage by compressing gas into liquid, and improve the transportation efficiency of gas.
Advantages of liquefied gas compressors
High efficiency and energy saving: Modern liquefied gas compressor design focuses on improving compression efficiency, reducing energy consumption and reducing operating costs by optimizing mechanical structure and cooling system.
Stable and reliable: After strict testing and quality control, liquefied gas compressors can operate stably for a long time, ensuring high efficiency and safety in the gas processing process.
Strong adaptability: There are many models and configurations of liquefied gas compressors, which can be adjusted according to different gas types and working conditions to meet various production and storage needs.
Reduced environmental impact: Efficient cooling and gas processing technology helps to reduce energy waste, while optimizing the system, reducing noise and vibration, and reducing the impact on the environment.
Why choose our liquefied gas compressor?
As a professional supplier, Kehai provide high-quality liquefied gas compressors to meet various industrial gas processing needs. Our products have the following advantages:
Advanced technology: Adopting internationally leading compression technology to ensure efficient and stable operation of the equipment.
Customized service: Provide customized liquefied gas compressor solutions according to customer needs to meet the requirements of different gas types and working environments.
Reliable after-sales service: Provide perfect after-sales service to ensure the long-term stable operation of the equipment and solve any problems that customers encounter during use.
Energy saving and environmental protection: Our equipment focuses on energy saving and emission reduction, helping customers reduce operating costs while meeting environmental protection requirements.
Conclusion
Liquefied gas compressors are indispensable and important equipment in the production, storage and transportation of liquefied gas. Its high efficiency and stability directly affect the operating efficiency and safety of the liquefied gas industry. Choosing a suitable liquefied gas compressor can not only improve work efficiency, but also reduce energy consumption and equipment maintenance costs. As a professional liquefied gas compressor supplier, Kehai is committed to providing you with the best quality equipment and services to help your business develop.
Welcome to contact Kehai for more product information. We will provide you with customized solutions to help your business achieve more efficient, green and sustainable development!