LNG Liquefaction Plant is an equipment to produce liquefied natural
gas, which is a kind of liquid natural gas that has been pretreated
and liquefied at a low temperature. Compared with conventional
natural gas, it has a higher heating value and cleanliness, which
is convenient for storage and transportation. In the development of
the natural gas industry, liquefied natural gas will be an
important part of it and an important supplement to pipeline
natural gas.
The small and medium-sized natural gas liquefaction plant adopts
the international advanced SMRC refrigeration process, which has
the characteristics of simple process, low energy consumption,
strong adaptability to changes in gas source components, small
footprint, and low equipment costs.
The main markets and uses of small natural gas liquefaction plants
for LNG products:
It mainly supplies end users outside the natural gas pipeline
network, gasification stations, gas filling stations, and
downstream portal stations.
1. Industrial fuel, used for self-contained power generation,
ceramics, glass bulbs, process glass, etc. to replace coal-fired
fuel;
2. Clean fuel, use after gasfication station vaporization, for
pipeline gas service in buildings, communities, small and medium
towns;
3. Automobile fuel, delivered to the gas station, can provide LNG
and CNG gas source refueling services;
System composition
The process and control components of the skid mounted LNG Plant
include process system, control system and utilities. Here we take
mini LNG Plant (small scale LNG plant) for example.
| S/N | Name | Remark |
| Process system |
| 1 | Pressure regulating and metering unit | |
| 2 | Deacidification unit | |
| 3 | Drying and mercury removal unit | |
| 4 | Liquefaction cold box unit | |
| 5 | Refrigerant refrigeration unit | |
| 6 | Loading unit | |
| 7 | Release system unit | |
| Control system |
| 1 | Distributed control system (DCS) of process unit | |
| 2 | Instrument safety system (SIS) | |
| 3 | Electronic control system | |
| 4 | Analysis system | |
| 5 | FGS system | |
| 6 | CCTV monitoring system | |
| 7 | communication system | |
| Utilities |
| 1 | Cooling circulating water and desalted water unit | |
| 2 | Instrument air and nitrogen unit | |
| 3 | Heat transfer oil unit | |
| 4 | Fire fighting system | |
| 5 | Truck scale | |