Propak, 1986, Refrigeration Gas Plant (Hydrocarbon Dew Point Control), 10 MMSCFD, Propane Refrigeration, Skid-Mounted, Surplus

Description

Overview
1. Surplus mechanical refrigeration gas plant for hydrocarbon dew point control
2. Packaged by Propak Systems Ltd; year 1986
3. Capacity: 10 MMSCFD (283,170 m3/day) of natural gas
4. Skid-mounted process equipment in insulated metal buildings, with an air-cooled cooler
Process
1. Inlet separator (V-100) for free water and hydrocarbons
2. Lube oil scrubber (V-107) on the recompressed gas
3. Gas/gas exchanger (E-301) pre-cools the gas to 6 C (43 F)
4. Gas chiller (E-302) cools the gas and condensed liquids to -20 C (-4 F)
5. Three-phase separator (V-103), 30 minute retention
6. Propane subcooler (E-303), condensate flash drum (V-101) and condensate/product cooler (E-304) for a stabilized condensate
Refrigeration and Glycol
1. Mechanical propane refrigeration, 15 tons at -22 C (-7.6 F)
2. Mycom reciprocating refrigeration compressor, belt drive
3. 80 wt% ethylene glycol injection, approx. 1.75 L/min (0.46 gal/min), for hydrate control and dehydration
4. Glycol reboiler with heating coil for the condensate flash drum
Design Basis
1. Inlet pressure: 2758 kPa (400 psi)
2. Inlet temperature: 49 C (120 F)
3. Inlet gas: approx. 93.5% methane, 2.7% nitrogen, 0.09% CO2
Condition and Scope
1. Surplus, about 40 years old
2. Disconnection included; preparation, loading and transport not included
3. Design documents, process description and P&ID drawings available