Components Mole fraction Components Mole fraction
Methane 0.9535 n-Nonane 0.0001
Ethane 0.0272 n-Decane 0.0001
Propane 0.0...
• Centrifugal separation
• Gravity settling
• Multistage separation
• Liquid-gas coalescers
Phase Separation
• Flash vapor...
WATER OUT
GAS OUT
HYDROCARBON
CONDENSATE
THREE PHASE
SEPARATOR
Raw gas
HYDROCARBON
CONDENSATE
FLARE
CONDENSATE
CONDENSATE
...
GAS OUT
GLYCOL
CONTACTOR
RICH
SOLVENT
LEAN
SOLVENT
DRY
GAS
GAS-GLYCOL
HEAT
EXCHANGER
GLYCOL-
GLYCOL
HEAT
EXCHANGER
STRIPPI...
GAS-GAS
HEAT
EXCHANGER-1
SEPARATOR
GAS-GAS
HEAT
EXCHANGER-2
COLD
SEPARATOR
EXPANDER
DE
METHANIZER
NGLs
COMPRESSOR
RECOMPRE...
1 2
V-111
EH-112
3
FA-110
4
5
6 V-311
V-211
7
EH-312
EH-212
41
40
DA-210
42
43
8
DA-310
10
V-331
11
13
12 12a
G-333
FA-332...
Equipment Identification No. Number of
equipment used
Three phase separator FA-110 1
Separator FA-410, FA -460 2
Absorber ...
Equipments Vendors
Distillation column J.D. Cousins Inc.
Shell and tube heat exchanger J.F.D. Tube and Coil Products Inc.
...
Heat Exchanger Specification Sheet
Company: X Job No. 23450
Address: Location: Y Reference No.
Plant location: Z Proposal ...
CONSTRUCTION OF ONE SHELL Sketch
Shell Side Tube Side
Design/Test pressure psi 400 / 800 100/130
Design temperature F 250-...
Natural gas processing: Production of LPG
Natural gas processing: Production of LPG
Natural gas processing: Production of LPG
Natural gas processing: Production of LPG
Natural gas processing: Production of LPG
Natural gas processing: Production of LPG
Natural gas processing: Production of LPG
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Natural gas processing: Production of LPG

This is a presentation on a process designed for a natural gas processing plant that can use NGL and condensate to produce LPG. The designed process yields a product with 50 percent of propane and 20 percent of butane, which meets the specification for a high quality LPG.
Published on: Mar 3, 2016
Published in: Engineering      
Source: www.slideshare.net


Transcripts - Natural gas processing: Production of LPG

  • 1. Components Mole fraction Components Mole fraction Methane 0.9535 n-Nonane 0.0001 Ethane 0.0272 n-Decane 0.0001 Propane 0.0077 C-11 0.0001 i-Butane 0.0018 C-12 0.0001 n-Butane 0.0018 C-13 0.0001 i-Pentane 0.0009 C-14 0.0001 n-Pentane 0.0007 Water 0.0005 n-Hexane 0.0011 Carbon di oxide 0.0016 n-Heptane 0.0005 Nitrogen 0.002 n-Octane 0.0002
  • 2. • Centrifugal separation • Gravity settling • Multistage separation • Liquid-gas coalescers Phase Separation • Flash vaporization • Fractionation Condensate Stabilization • Refrigeration • Adsorption by solid desiccant • Absorption by liquid desiccant Gas dehydration • Refrigeration • Lean oil absorption • Solid bed adsorption • Membrane separation NGL recovery NGL Fractionation yields LPG Economical  Higher recovery of condensate  Higher recovery levels of NGL
  • 3. WATER OUT GAS OUT HYDROCARBON CONDENSATE THREE PHASE SEPARATOR Raw gas HYDROCARBON CONDENSATE FLARE CONDENSATE CONDENSATE STABILIZER
  • 4. GAS OUT GLYCOL CONTACTOR RICH SOLVENT LEAN SOLVENT DRY GAS GAS-GLYCOL HEAT EXCHANGER GLYCOL- GLYCOL HEAT EXCHANGER STRIPPING COLUMN WATER
  • 5. GAS-GAS HEAT EXCHANGER-1 SEPARATOR GAS-GAS HEAT EXCHANGER-2 COLD SEPARATOR EXPANDER DE METHANIZER NGLs COMPRESSOR RECOMPRESOR DE ETHANIZER LPG TO STORAGE TANK ETHANE CONDENSATE NGLs
  • 6. 1 2 V-111 EH-112 3 FA-110 4 5 6 V-311 V-211 7 EH-312 EH-212 41 40 DA-210 42 43 8 DA-310 10 V-331 11 13 12 12a G-333 FA-332 EA-330 17 14 DA-340 16 15 18 EA-320 9 20 21 EA-430 22 36 EA-420 FA-410 24 23 25 FA-460 32 26 27 29 28 30 31 DA-470 33 FA-511 34 35 35a 44 DA-510 45 46 GB-440 38 GB-450 39 22a EC-411 G-321 G-512 Raw gas 19Make-up glycol Drain Flare Flare Water Sales gas Ethane LPG Flare 37
  • 7. Equipment Identification No. Number of equipment used Three phase separator FA-110 1 Separator FA-410, FA -460 2 Absorber DA-310 1 Stripping column DA-340 1 Distillation column DA-210, DA-470, DA-510 3 Heat exchanger EA-320, EA-330, EA-420, EA-430 4 Compressor GB-440, GB-450 2
  • 8. Equipments Vendors Distillation column J.D. Cousins Inc. Shell and tube heat exchanger J.F.D. Tube and Coil Products Inc. Separators Q.B. Johnson Manufacturing Inc.
  • 9. Heat Exchanger Specification Sheet Company: X Job No. 23450 Address: Location: Y Reference No. Plant location: Z Proposal No: Service of Unit: Glycol cooler Rev No.: Date: 7.11.15 Item No.: EA-320 Size: Type Horizontal Connected in Series Parallel Surf/unit(eff.) ft2 Shells/unit Surf/shell (eff.) ft2 PERFORMANCE OF ONE UNIT Fluid allocation Shell Side Tube Side Fluid name Glycol Dry gas Fluid quantity, Total lb/h 8188 43810 Vapor (In/Out lb/h 43810 43810 Liquid lb/h 8188 8188 Noncondensable kg/s Temperature (In/Out) F 384 320 170 184 Dew / Bubble point F Density lb/ft3 60.87 1.88 Viscosity cp 0.634 0.0014 Molecular wt, Vap 150 17.1 Specific heat BTU/(lb*F) 107.2 10.42 Thermal conductivity BTU/(ft*h*F) 0.0079 0.0026 Pressure psi 600 70 Velocity ft/s Pressure drop, allow./calc. psi 10 2 Fouling resist. (min) ft2*h*F/BTU Heat exchanged 353400 BTU/h MTD corrected F
  • 10. CONSTRUCTION OF ONE SHELL Sketch Shell Side Tube Side Design/Test pressure psi 400 / 800 100/130 Design temperature F 250-400 Number passes per shell 1 2 Corrosion allowance in 0.12 0.12 Connections Size/rating In Out Intermediate Tube No. 160 OD 0.787 In, Thk (Min/Avg) 0.079 In; Length 19.685 Ft; Pitch 1.969 In Triangular 30 Tube type Material Shell ID OD 29.1 In Shell cover Channel or bonnet Channel cover Tube sheet-stationary Tube sheet-floating Floating head cover Impingement protection Baffle-crossing Type Single Cut(%d) 20 horizontal Spacing: c/c 31.5 in Baffle-long Supports-tube U Bend Type Bypass seal Tube-tubesheet joint Expansion joint Type RhoV2-Inlet nozzle Bundle entrance Bundle exit Gaskets - Shell side Tube Side Floating head Code requirements TEMA class A E L Weight/Shell Filled with water Bundle

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