A complete LNG liquefaction plant includes three systems: process system, instrument control system and utility system. According to the different feed gas sources, it can be changed. Process system introduction of LNG plant: After Desanding, heating, pressure regulating and metering, the feed natural gas enters the natural gas pretreatment system, removes CO2, Hg, heavy hydrocarbon and H2O, enters the liquefaction cold box, is cooled, liquefied and supercooled in the plate fin heat exchanger, throttled and flashed to the flash tank, and the separated liquid phase enters the LNG storage tank as LNG products. The main device of the unit are: (1) Filtration, booster and metering unit S/N Equipment Name Q’ty Remarks Filtration and metering skid 1 Meter 1 set 2 Filter separators 2 sets Shell and tube type, heat transfer oil heating 3 Fuel gas buffer tank 1set Gas compression skid 4 Gas compressor 2 sets 1 work, 1 standby (2) Feed gas decarbonization unit S/N Equipment name Q’ty Other instructions Decarbonization skid (1) 1 Absorption tower 1 set Material: Q345R 2 Reboiler 1set Shell side: s30408, tube side: s30408 3 Regeneration tower 1set Material: s30408 Decarbonization skid (2) 4 Gas liquid heat exchanger 1set Air cooled 5 Decarbonization gas separator 1set Material: Q345R 6 MDEA circulating pump 2sets One for use and one for standby 7 Flash separator 1set Material: Q345R 8 Rich and poor liquid heat exchanger 1set Plate type 9 Lean liquid cooler 1set Air cooling 10 Solution filter 1set Material: Q345R, activated carbon 0.5m3 11 Acid gas cooler 1set Air cooled 12 Acid gas separator 1set Material: s30408 13 Solution storage tank 1set 14 Underground storage tank 1set 15 Reflux pump 2sets One for use and one for standby 16 Defoamer tank 1set 17 Defoamer pump 1set Material: Q345R (3) Dehydration and mercury removal unit of feed gas S/N Equipment name Q’ty Remarks Dehydration and mercury removal skid 1 Dehydration adsorber 3 ets Cycle switching 2 Regeneration gas heater 1set Electrical heating 3 Regeneration gas cooler 1set Air cooling 4 Regeneration gas separator 1set 5 Mercury remover 1set 6 Dust filter 2sets 1 work, 1 standby (4) Feed gas heavy hydrocarbon removal unit S/N Equipment name Q’ty Remarks Feed gas heavy hydrocarbon removal unit 1 Heavy hydrocarbon adsorber 2 sets Cycle switching 2 Regeneration gas heater 1set Electrical heating 3 Regeneration gas cooler A 1set Air cooling 4 Regeneration gas cooler B 1set Air cooling 5 Regeneration gas separator 1set 6 Dust filter 2sets 1 work, 1 standby (5) Cryogenic liquefaction unit S/N Equipment name Q’ty remarks Liquefaction cold box (independent skid) 1 Liquefaction heat exchanger 1 set Aluminum plate fin heat exchanger 2 Refrigerant gas-liquid separator 1 set Placed in the cold box 3 Regulating valve 1set 4 Primary instrument 1set 5 Cryogenic piping and manual valves 1set Stainless steel 6 Cold box insulation material 1 batch User Provide 8 Heavy hydrocarbon separator 1set Stainless steel 8 Residual liquid vaporizer 1set 50Nm3/h 9 Nitrogen heater 2 sets 50Nm3/h 10 LNG buffer tank 1set (6) MR cycle refrigeration unit S/N Equipment name Q’ty remarks 1 Refrigerant dryer 1set Centrifugal type 2 Refrigerant vaporizer 1set 3 High temperature refrigeration compressor 1set Screw type 4 Low temperature refrigeration compressor 1set Screw type (7) LNG loading and BOG recovery unit S/N Equipment name Q’ty remarks LNG loading unit 1 LNG loading crane pipe 2 sets BOG recovery unit 1 BOG heater 1set 2 BOG compressor 2setS 1 work, 1 standby 3 BOG water bath heater 1set 4 Fuel gas balance tank 1set Contact: Sichuan Rongteng Automation Equipment Co., Ltd. Phone/WhatsApp/Wechat : +86 177 8117 4421 +86 138 8076 0589 Website: www.rtgastreat.com Email: info@rtgastreat.com Address:No. 8, Section 2 of Tengfei Road, Shigao Subdistrict,Tianfu New Area, Meishan city, Sichuan China 620564 .