Process Description:
The plant is designed to recover a liquid "ethane plus" product by cryogenic processing of 12 MMSCFD of natural gas. The process includes inlet gas compression, molecular sieve dehydration, heat exchange, refrigeration, Joules-Thompson expansion, demethanizing, nitrogen treating, tri-ethylene glycol treating, residue gas compression, and product pipeline pumping and/or product truck loading.
The refrigerated JT process utilized in this plant is a cryogenic recovery process which as the name implies, uses a combination of external refrigeration and Joules-Thompson expansion cooling to condense and recover ethane and heavier hydrocarbons from the inlet natural gas stream. Because the presence of any moisture in the inlet gas would result in the formation of hydrates at the low temperatures obtained using this process, molecular sieve dehydration is required.
The Plant processes field gas into three primary products: (1) lean, dry residue natural gas, (2) ethane and heavier natural gas liquids (NGL) (Y-Grade product], and (3) and a condensate product.
Gas entering the Plant at low pressure, passes through horizontal separators, or slug catchers, which separate entrained liquids from the field gas prior to processing. The condensate liquids are sent to atmospheric storage tanks, where the condensate and water are separated and then individually stored.
The condensate and slop water will be loaded out by truck.
The inlet gas is then compressed by inlet compression. Water is removed from the compressed gas with a molecular sieve dehydration unit. The gas is then sent to a cryogenic unit to remove any additional natural gas liquids (NGL) by cooling the stream. Refrigeration is provided via a gas chiller. The natural gas exiting the cryogenic unit is lean and dry. The gas is then sent to Nitrogen treating, where a majority of the inert gas is removed by a pressure swing adsorption plant. The gas is recompressed from the pressure swing adsorption plant and sent to residue compression where it is compressed to pipeline pressure and then routed to the sales pipeline. The NGL collected from the cryogenic process is then sent to liquid storage tanks where it is loaded out by truck.
Filter-Separator Vessel Tag 1*
Manufacturer: Perry Equipment Corporation
Series: 75V Filter-SEP
Model: 75V-4-FG324
Serial Number: 81-802-1
Flow: 15 MMSCFD
Substance: 20.96 MOL.WT.
Oper. Temp.: 120 F
Oper. Press.: 850 PSIG
This filter contains: 4 NO. FG324 Elements
Gas Filter Tag 1*
Manufacturer: Perry Equipment Corporation
Series: 70V Gas Filter
Model: 70V-3-FG336
Serial: 81-803-1
Flow: 15 MMSCFD
Substance: 20.96 NO. WT.
Oper. Temp.: 120 F
Oper. Press.: 850 PSIG
This filter contains: 3 NO. FG336 Elements
M-0202
Dust Filter Tag:
F2-A
Gas Filter Tag 2*
Manufacturer: Perry Equipment Corporation
Series: 70V Gas Filter
Model: 70V-3-FG336
Serial: 81-803-2
Flow: 15 MMSCFD
Substance: 20.96 NO. WT.
Oper. Temp.: 120 F
Oper. Press.: 850 PSIG
This filter contains: 3 NO. FG336 Elements
M-0203
Dust Filter Tag:
F2-B
Vessel Tag 2*
Manufacturer: Thor Steel
National Board Serial: 1026
U WS RT-3
MAWP Internal: 1000 PSIG
Min. Allow. Pressure: 160F
Manufacturer Serial: 664-2
F-2B
Year: 1981
Cooler Tag*
Manufacturer: Joy Industries
Service: Regen Gas Cooler
Serial: 1020
P.O Number: 24213
Size & Type: 7 x 10 Section
Year Built: 1998
Item Number: AC-1
MAWP Tube Side: 600 PSI @ 600 F
MAWP Shell Side: N/A @ N/A F
MDMT Tube Side: 32 F @ 600 PSI
MDMT Shell Side: N/A @ N/A F
Actuator Valve Tag 1*
Manufacturer: Fisher Controls
Serial Number: 21052-1
Body: CS
Plug/Seat: STD
Actuator Size: 656-30
Press. Limits: PSIG
Initial Spring Setting: 3-15
Open Range: F/O
Control Valve Tag 1*
Manufacturer: Taylor Valve
Size: 1
NB/UV
CRN: 0G01318.2C
Set Pressure: 80 PSIG
CAP: 261 5CFM
P.N.: 82E3351341
Range: 51-100
T-8200-1
Trim: NACE
Serial Number: 017024-1
Date: 03/12
Valve Tag*
Manufacturer Fisher
Type: 627
Serial Number: 20187755
Range: 35-80 PSIG
Orifice: 3/8"
Trim: ALUM
Control Valve Tag 2*
Manufacturer: FloPro
1/2 PORT 6 Cv
3/8 PORT 4 Cv
1/4 PORT 2 Cv
LOT/Date: 2011-0330
Plug/Seal: ALL0Y6
Size: 1
Body: CL 900
2250 CWP
Travel 1/2
Body LCC - STEM SST
MAX/MIN ACT PRESS. 40/30 PSI
Actuator Valve Tag 2*
Actuator:
Manufacturer: Fisher Reman
Serial: 456120-12
Actuator: OPENS
MAX. Allow Supply: 110
Bench Set: 7 to 15 PSI
Type: 667
Size: 30
Travel 3/4
Body:
Manufacturer: Fisher Reman
Serial: 456120-12
Type: D
Material-Body: WCB
STEM/PLUG: SST/SS M/FLUTE 3F
Rating 3600 PSI
Tag: CV-02007 ORIG. S.N.: 803215
Order: 2/2012
Actuator Valve Tag 3*
Actuator:
Manufacturer: Fisher Reman
Serial: 456120-12
Actuator: OPENS
MAX. Allow Supply: 110
Bench Set: 7 to 15 PSI
Type: 667
Size: 30
Travel 3/4
Body:
Manufacturer: Fisher Reman
Serial: 456120-13
Type: D
Size: 1 IN
Material-Body: WCB
STEM/PLUG: SST/SS M/FLUTE 2F
Rating 3600 PSI
Tag: 1CV-02009 ORIG. S.N.: 7335405
Order: 2/2012
Malard Control Tag*
Model: 3100E
480 V AC
5 AMPS
MAWP: 2000PSI/13.8 MPa
Serial: 658412-25
Moister Monitoring System Tag*
Series: 35
Manufacturer: GE Panemtrics
Probe Serial: 440585-PR
Date: 03/2012
Model: MMS35-621-1-010
Serial: 7175
Volts: 120 VAC
Watts: 12
50/60Hz
Sample System Tag*
Serial: 005486
Sample Inlet Max. Pressure: 1000 PSIG
Flowmeter Tag*
Serial: 0112020485742/003
Model: 3750CZ222
Limits: 4000 PSIG (276 BAR) at 400F (204C)
Vessel Tag 1*
National Board Serial: 1025
Manufacturer: Thor Steel Inc.
U WS RT-3
MAWP Internal: 1000 PSIG
Minimum Allow. Temp.: 160 F
Manufacturer Serial Number: 664-1
Year: 1981
Control Valve Tag 3*
Manufacturer: FloPro
1/2 PORT 6 Cv
3/8 PORT 4 Cv
1/4 PORT 2 Cv
LOT/Date: 2011-0330
Plug/Seal: ALL0Y6
Size: 1
Body: CL 900
2250 CWP
Travel 1/2
Body LCC - STEM SST
MAX/MIN ACT PRESS. 40/30 PSI
Control Valve Tag 4*
Manufacturer: FloPro
1/2 PORT 6 Cv
3/8 PORT 4 Cv
1/4 PORT 2 Cv
LOT/Date: 2011-0422
Plug/Seal: ALL0Y6
Size: 1
Body: CL 900
2250 CWP
Travel 1/2
Body LCC - STEM SST
MAX/MIN ACT PRESS. 40/30 PSI
Misc. Tag*
Manufacturer: Daniel Industries
Serial: 8119245
Size: 6
Line Bore: 6.065
A.NS.I P.S.P.R.: 600
CWP: 1440 LBS
Plate Thickness: .125
Control Valve Tag 5*
Manufacturer: FloPro
1/2 PORT 6 Cv
3/8 PORT 4 Cv
1/4 PORT 2 Cv
LOT/Date: 2011-0330
Plug/Seal: ALL0Y6
Size: 1
Body: CL 900
2250 CWP
Travel 1/2
Body LCC - STEM SST
MAX/MIN ACT PRESS. 40/30 PSI
Control Valve Tag 6*
Manufacturer: FloPro
1/2 PORT 6 Cv
3/8 PORT 4 Cv
1/4 PORT 2 Cv
LOT/Date: 2011-0330
Plug/Seal: ALL0Y6
Size: 1
Body: CL 900
2250 CWP
Travel 1/2
Body LCC - STEM SST
MAX/MIN ACT PRESS. 40/30 PSI
Vessel Tag 3*
Manufacturer: ENFAB Inc.
527 PSI @ 150 F
National Board Serial: 11
MFG. Serial: 2053
Shell: 43.75
Head: .375 Min
Year Built: 1981
Cust. PO.: 30240-TA-505
Item Number: V1
Serials: "81-802-1" / "81-803-1" / "81-803-2" / "1026" / "664-2" / "1020" / "21052-1" / "017024-1" / "20187755" / "456120-12" / "456120-13" / "658412-25" / "440585-PR" / "7175" / "005486" / "0112020485742/003" / "1025" / "664-1" / "8119245" / "11" / "2053"