Gas treatment plant
This presentation is the property of its rightful owner.
Sponsored Links
1 / 21

Gas Treatment Plant PowerPoint PPT Presentation


  • 39 Views
  • Uploaded on
  • Presentation posted in: General

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.

Download Presentation

Gas Treatment Plant

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


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: 48990 BBL/day (~$22/BBL)


Block Flow Diagram


PFD-002


PFD-003


Aspen Estimate-Demethanizer in Hydrocarbon Recovery

Size:

Tower:

  • Vessel Diameter: 8.5 ft

  • Vessel Height 66 ft

  • Liquid volume: 11,249.5 gallons

  • 33 Trays

  • 24 inches between trays

    Condenser:

  • Area: 22,980.6 ft^2

    Reboiler:

  • Area: 7,803.94 ft^2

  • Tube length: 20 ft

    Reflux Pump:

  • Liquid flow rate: 1808.3 GPM

  • Efficiency: 70


Aspen Estimate-Demethanizer in Hydrocarbon Recovery

Equipment Cost:

  • Tower: $3,059,300

  • Condenser: $419,000

  • Reboiler: $268,000

  • Reflux Pump: $17,200

    Total equipment cost for one Demethanizer Column:

    $3,763,500


Aspen Estimate-Demethanizer in Hydrocarbon Recovery

Energy:

  • Tower: 28.03 MMBTU/hr

  • Condenser: 22.7 MMBTU/hr

  • Reboiler: 5.3 MMBTU/hr

  • Reflux ratio: .35


Aspen Estimate-Demethanizer in Hydrocarbon Recovery

Cost:

  • Total operation cost:

    19,031,900 $/year

  • Total capital cost:

    $12,567,400


Annotated Equipment List


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

    $ 6,690,000

  • 24 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


  • Login