In the field of natural gas liquefaction

the small-scale natural gas liquefier has attracted more and more attention at home and abroad

due to its small volume

mobile transportation

convenient start-up and shut-down

as well as skid-mounted package.In this paper

technologic design of the small-scale liquefied natural gas plant in skid-mounted package is carried through based on No.1 station outgoing gas of 23th gas field of Zhongyuan oil field.The simulative calculation of the small-scale LNG project achieves temperature

pressure

enthalpy

entropy

flow rate

component mole fractions in liquid and gas phase of every node in the whole process that using the methods of compound modularized adsorption technology and SP-MRC refrigeration.The result shows LNG recovery is more than 90% and power consumption cost is only 0.379 kW·h·m-3

which is worth 0.19 CNY·m-3.