Gas Treatment Plant Chris, Stephanie, Mariam, Kyle Mentor: Jerry Palmer

Report Outline Previous Questions Block Flow Diagram Detailed PFD's (stream #, components, P&T) for each process Energy sinks/loads, Equipment sizing, Cost in Aspen estimator for one process -- Hydrocarbon recovery

Previous Questions 1. Sending 97% Nitrogen and 3% methane from Nitrogen rejection stream to NH3 plant. 2.Using thermal swing adsorber instead of a pressure swing adsorber. To prevent the loss of feed gas in the bed during depressurization and also,the short time cycle in PSA can cause rapid re-pressurization that will lead to transient variation in the feed and product flow which will affect the operation of the plant 3. Using only one turboexpander for Hydrocarbon recovery.

Basis : 310 MMSCFD Revenues Midrex : 103 kmol/day (Transfer Cost) Syn Gas:111 kmol/day (Transfer Cost) Nh3 PLant : 50.4 kmol/day (Transfer Cost) CHP :195.4 kmol/day (Transfer Cost) Pipeline:4.8 kmol/day ($3.80/MSCFD) LNG: 5000 BBL/day ($10.40/BBL) NGL: BBL/day (~$22/BBL)

Block Flow Diagram

PFD-002

PFD-003

Aspen Estimate-Demethanizer in Hydrocarbon Recovery Size: Tower: o Vessel Diameter: 8.5 ft o Vessel Height 66 ft o Liquid volume: 11,249.5 gallons o 33 Trays o 24 inches between trays Condenser: o Area: 22,980.6 ft^2 Reboiler: o Area: 7, ft^2 o Tube length: 20 ft Reflux Pump: o Liquid flow rate: GPM o Efficiency: 70

Aspen Estimate-Demethanizer in Hydrocarbon Recovery Equipment Cost: o Tower: $3,059,300 o Condenser: $419,000 o Reboiler: $268,000 o Reflux Pump: $17,200 Total equipment cost for one Demethanizer Column: $3,763,500

Aspen Estimate-Demethanizer in Hydrocarbon Recovery Energy: o Tower: MMBTU/hr o Condenser: 22.7 MMBTU/hr o Reboiler: 5.3 MMBTU/hr o Reflux ratio:.35

Cost: o Total operation cost: 19,031,900 $/year o Total capital cost: $12,567,400 Aspen Estimate-Demethanizer in Hydrocarbon Recovery

Annotated Equipment List EquipmentDescriptionEquipmentDescriptionEquipmentDescriptionEquipmentDescription AC-001AIR COOLERD-001VAPOR-LIQUID SEPARATOR HX-003HEAT EXCHANGER MS-001MOLECULAR SIEVE BED C-001DEMETHANIZE R D-002VAPOR-LIQUID SEPARATOR HX-004HEAT EXCHANGER MS-002MOLECULAR SIEVE BED C-002CRYOGENIC DISTILLATION COLUMN; ASTM A353 D-003VAPOR-LIQUID SEPARATOR HX-005HEAT EXCHANGER MS-003MOLECULAR SIEVE BED CMP-001COMPRESSORD-004INLET- SEPARATOR HX-006HEAT EXCHANGER MS-004MOLECULAR SIEVE BED CMP-002COMPRESSORD-005VAPOR-LIQUID SEPARATOR HX-007HEATERMS-005MOLECULAR SIEVE BED CMP-003COMPRESSORD-006VAPOR-LIQUID SEPARATOR HX-008BRAZED ALUMINIUM MS-006MOLECULAR SIEVE BED CMP-004COMPRESSORD-007VAPOR-LIQUID SEPARATOR HX-009BRAZED ALUMINIUM PMP-001 CMP-005COMPRESSORD-008PHASE SEPARATOR JT-001JOULE THOMPSON VALVE R-001CHILLER CMP-006COMPRESSORD-009VAPOR LIQUID SEPARATOR JT-002RB-001REBOILER CMP-007COMPRESSORHX-001HEAT EXCHANGER M-001MEMBRANE CMP-008COMPRESSORHX-002HEAT EXCHANGER M-002MEMBRANE

Energy Loads and Sinks PFD-001: Compression = 6888 HP Heating = 1.7MMBTU/HR PFD-002 and PFD-003: Estimated total of 139MMBTU/HR PFD-004:Air Cooling =3.4MMBTU/HR Compression = 880HP Heating = 44.6MMBTU/HR PFD-005: Refrigeration = 56.3 MMBTU/HR PFD-006: Heating = 8 MMBTU/HR PFD-007: Compression = 1260 HP Refrigeration = 58 MMBTU/HR PFD-008: Compression = 920HP

Major Equipment Costs 6 molecular sieve Adsorbers installed $ 6,690, Tray Nitrogen Rejection Column Installed $2,300,000 Absorbing and Stripping Columns for MDEA treatment, approximately 25 trays each intstalled $2,500,000

Q & A