General Description
1.After the purification treatment (CO2, sulfide, heavy hydrocarbon and water desorption), and copious cooling to -162℃ under the ordinary pressure, the natural gas will turn to liquid state, which is called liquefied natural gas. In the same quality, the volume of LNG is 1/620 of the natural gas, and the weight is about 45% of the water.
2.Before liquefaction, the natural gas should be purified to remove moisture, carbon dioxide, sulphureted hydrogen, mercury, heavy hydrocarbon and benzene etc. to prevent these materials from clogging the heal-exchanger, pipelines or valves.
Main sizes of natural gas liquefaction patents:
2,000Nm3/d-2,000,000Nm3/d.
Main equipment:
1. Efficient NG turbo-expander
2. NG motor and generator
3. Natural gas (coal bed methane) compressor
4. Efficient aluminum plate-fin heat exchangers
Technical Features:
1. Adopting modular design, so it can be configured flexibly according to different gas supply.
2. The equipment has already achieved skid mounted, which makes it can be installed and transferred convenient.
3. Liquefaction process — Methane expansion process or MRC (Mixed Refrigerant Cycle).
Advantages
The equipment is featured by low investment, low cost, easy installation, convenient transfer, small area coverage and fast recovery. 40,000m3/d-2,000,000 m3/d LNG plant:
200,000 m3/d LNG plant:
2,000,000 m3/d LNG plant:
150,000 m3/d LNG plant:
LNG plant parameters:
Output of LNG:
2,000Nm3/d-2,000,000Nm3/d
Outlet fluid temperature: -152°C
Liquefaction running costs: <USD $ 0.13 / Nm3
Liquefaction process energy consumption: <0.6 Kw.h/Nm3
Equipment service life: > 15 years
