NGL Recovery Units for Sale

The stabilizer system consists of a feed-bottom exchanger (to maximize the heating efficiency and minimize the fuel gas consumption and product cooling cost), a stabilizer column with valve trays (for vapor-liquid contacting), reboiler (to warm up the hydrocarbon liquids and vaporize the light hydrocarbons using a heat medium), and a product cooler (to reduce the temperature of liquid products). Hot vapor, which is produced in the reboiler, flows up the column, stripping out the light hydrocarbons (e.g. C1, C2, C3, etc.) from the relatively colder liquid stream flowing down from the top of the tower to produce a stabilized liquid product. The overhead vapors may be used as fuel gas or recompressed into the sales gas pipeline or the front of a gas processing facility.

Used 45 MMSCFD NGL/LPG Plant built 1996. This plant is designed for two purposes: (1) remove CO2; (2) convert hydrocarbons to liquid petroleum gas / natural gas liquid products. The plant consists of several process sections: dehydration, compression, propane recovery column, demethanizer, refrigeration, hot oil and drain. Inlet gas goes to tri-ethylene glycol (TEG) dehydration unit to remove water. Dried, compressed and cooled gas goes to propane recovery column (PRC). The PRC is a column containing 67 bubble-caped trays and 2 chimney trays, and provided with a partial condenser using propane refrigerant. It separates CO2 from hydrocarbon in the inlet gas using absorption and cryogenic fractionation. The PRC overhead is sent to the reflux accumulator where liquids and gas are separated. The vapor steam goes to the demethanizer that is an 8-trayed column. Liquid accumulating in the base of the demethanizer is CO2 product. The overhead vapor from the demethanizer goes to a reflux accumulator and then to gas/gas exchanger as residue gas and is utilized as plant fuel gas. The bottom from the PRC is a heavy product composed mostly of C5+, that is discharged to the gas/gas exchanger. The PRC also produces natural gas liquids (NGL) from the middle of the column. The condensate stabilizer column separates the NGL to propane / butane mix and stabilizer condensate. The heat for the condensate stabilizer column is provided by the hot oil system of the plant.

Used 20 MMSCFD cryogenic natural gas liquids plant. Designed by Randall. Plant commissioned in 1984. Inlet gas requirements: flow for each of two trains 20000 MSCF/D (14.65 psia @60F). Design pressure 600 psig, maximum pressure 800 psig. Water content 7 Ib/MMSCF. Inlet gas temperature 70F (design), 40 F (minimum). Residue gas pressure 800 psig @120F. End product: Single untreated demethanized stream with 1200 psig max pressure @120F. Methane content one-half(0.5) liquid volume percent of the total stream.

Used 18 MM SCFD Cryogenic NGL (Natural Gas Liquids) Recovery Unit built in 2008. The unit was designed to recover ethane and other heavy components from natural gas through cryogenic process. The plant includes 5 sections: 1. Inlet TEG dehydration; 2. Molecular sieve dehydration; 3. Turbo-expander; 4. Residue gas compression; 5. NGL product pipeline; 6. Support utilities. The inlet gas is fed to the plant at 550 psig. The water content of the inlet gas is reduced to less than 1 ppm by the TEG and molecular sieve dehydration. Dry gas flows to the cryogenic unit where it is cooled to sub-zero temperature. The mixed cold stream flows into the expander inlet separator to separate the liquids from the gas. The liquids flow to the demethanizer to remove methane. The cold gas stream goes to the turbo-expander to condense more liquids, which flow to the de-ethanizer. The plant has a compressor package consisting of a Caterpillar 3516 engine driving an Ariel JGT4 2-stage gas compressor, which re-compresses the residue gas (higher methane content) from the plant for delivery to pipeline.