Mechanical Compression Method: Mechanical compression is the most common method for compressing natural gas. It uses a mechanical compressor to compress natural gas to a high-pressure state. Mechanical compression has advantages such as high compression capacity and simple equipment, but it also has disadvantages such as high noise and severe pollution.
Liquid Compression Method: Liquid compression converts natural gas into a liquid state and then compresses it into a high-pressure gas. It does not require equipment such as coolers and expanders, thus saving energy. However, the disadvantages are a more complex process and higher compression temperatures, which are not conducive to the storage of natural gas.
Compressor: The compressor is one of the main devices for compressing natural gas. It can be divided into reciprocating compressors and centrifugal compressors. The former is suitable for small compression systems, while the latter is suitable for large compression systems. The compressor's compression ratio, compression capacity, and efficiency affect the efficiency and cost of compressed natural gas.
Cooler: The cooler is one of the devices that the high-temperature, high-pressure gas discharged after natural gas compression must pass through. It cools the high-temperature, high-pressure gas to a normal temperature and pressure state for convenient storage and use. Commonly used coolers include air coolers and water coolers.