Equipment selection and supply The liquefaction unit is a complete set of equipment. After the complete set, the stable and efficient operation of the unit must be ensured.The principle of equipment design, manufacturing and finalized product selection is based on domestic, mature technology and advanced performance. The supplied equipment shall be designed as per unit skid.In addition to the main equipment, spare parts normally used for one year, special tools for screw compressor, instruments and valves, each skid equipment also includes paired flanges (with gaskets and fasteners) and anchor bolts of all connecting pipes on the skid. The electrical interfaces on the skid are equipped with terminal boxes, and integrated technology is adopted to minimize the number of connecting cables. The skid is equipped with instrument gas main pipe, and the internal instrument gas pipe connection has been completed during skid manufacturing. The basic technical data of process equipment described in this chapter shall be subject to the final design. Process equipment and utilities The supply list of process equipment of the unit is as follows (the overall dimensions shall be subject to the final supply):  Feed gas filtration separation and pressure regulating metering unit. S/n Equipment Qty Manufacturer Remarks 1. Filtration separation and fuel gas skid 1.1 Feed gas filter separator 2 Sichuan Jinxing 1One for use and one for standby 1.2 Voltage regulator, meter 1set 1.3 Fuel gas buffer tank 1 Sichuan Jinxing Feed gas decarbonization unit S/N Equipment name QTY Manufacturer Other instructions 1. Decarbonization skid (I) 1.1 absorption tower 1 Sichuan Jinxing 1.2 Regeneration tower 1 Sichuan Jinxing stainless steel 1.3 Reboiler 1 Sichuan Jinxing 2. Decarbonization skid (II) 2.1 Decarburization gas cooler 1 Sichuan Jinxing Shell and tube type 2.2 Decarburization gas separator 1 Sichuan Jinxing 2.3 Flash separator 1 Sichuan Jinxing 2.4 Rich and poor liquid heat exchanger 1 Shanghai Haoke et al Plate type 2.5 Lean liquid cooler 1 Sichuan Jinxing Shell and tube type 2.6 Solution filter 1 Sichuan Jinxing 2.7 Sour gas cooler 1 Sichuan Jinxing Shell and tube type 2.8 Acid gas separator 1 Sichuan Jinxing stainless steel 2.9 MDEA circulating pump 2 Dalian Haite One for use and one for standby 2.10 MDEA circulating tank 1 Sichuan Jinxing Mercury removal and dehydration unit of feed gas S/N Equipment name QTY Manufacturer Other instructions 1. Dehydration and demercuration skid 1.1 Drying tower 3 Sichuan Jinxing Cycle switching 1.2 Regeneration gas heater 1 Sichuan Jinxing Shell and tube type 1.3 Regeneration gas cooler 1 Sichuan Jinxing Shell and tube type 1.4 Regeneration gas separator 1 Sichuan Jinxing 1.5 Mercury remover 1 Sichuan Jinxing 1.6 Dust filter 1 Sichuan Jinxing 4、 Low temperature liquefaction unit S/N Equipment name QTY Manufacturer Other instructions 1. Liquefied cold box 1.1 Liquefaction heat exchanger 1group Aluminum plate fin heat exchanger 1.2 Denitrification tower 1 1.3 Regulating valve 1set 1.4 Primary instrument 1set 1.5 Cryogenic piping and manual valves 1set stainless steel 1.6 Cold box insulation material sufficient 1.7 Denitrification tower condenser 1 1.8 Denitrification tower reboiler 1 1.9 Residual liquid vaporizer 1 1000Nm3/h 1.10 Nitrogen heater 1