Upload
ross-obrien
View
219
Download
0
Tags:
Embed Size (px)
Citation preview
Clark Reliance Corporation Strongsville, OH
Fuel Gas Treatment
Applications From Well to End User
Gas Gathering • Multiple Wells to
Production
• Remove Solid and Liquid Contaminates
• Robust Mechanical Separation
• Minimal Maintenance
• H2S and CO2 is removed as well.
Gas Transmission• Gas Transmission
Stations • 50 to 100 Miles along
the Pipeline• Compressors
Increase Pressure for Further Distribution
• Inlet - Separators, Filter Separators
• Outlet – Coalescing Filter
• Generate Electricity for Power Grid
• Peak Power Generation
• Base Load
• Produce Steam
• Drive Steam Turbine for Additional Power Generation
Combined Cycle Electrical Generation Process Overview
• Pressure Control
• Temperature Control
• Flow Measurement
• Removal of Impurities– Knockout– Fine Filtration– Last Chance Filter
Elements of Fuel Gas Treatment
Pressure Reduction
• Sliding Stem Valves with Positioners
• Reduces the pressure of the gas from 700-1000 psi to 400-450 psi
• Protects Turbine• Improves Turbine
Efficiency
Performance Heater• Shell and Tube Heat
Exchanger– 100% of Gas Flow– Heats Gas to ~350 °
• Boiler Feed Water• Controlled by Throttling
Water Discharge
Start-Up Heater
• Electric Heater– ~25% of Gas Flow– 50 F Temperature Rise
• 50 F Above Dew Point• SCR or Step Control
Water Bath Heater• Gas Fired Heater
– 100% of Gas Flow– Heats Gas to ~180 °
• U-Bend• Controlled by Throttling
Gas Flow/Bypass
Flow Measurement
• Individual Turbine Flow Measurement– Orifice Meter
• Custody Transfer– Not Clark-Reliance
Removal of Impurities
Mechanical Separation Filtration
Gravity Separation
• Vane Separators• KO Drums • 100% Removal of >8µ
Liquids
Gravity Separation
• Offset inlet with baffle
• Handles slugs of liquids
• Efficiency to 100% down to 5 micron liquid particles
Centrifugal Separation
• Gas-Liquid Separation
• HI-EF Element
• 99-100% Removal of Liquids to 8µ Solids to 5µ
Centrifugal Separation
• Multi-Cyclone
• Scrubber
• 99-100% Removal of Liquids to 8µ Solids to 5µ
• Limited Turndown in Gas Flow
Filter Separator
•Multi-Stage•Liquid and Solid Filtration•99% Removal of Solids to 0.5µ•100% Liquid and Solid Removal to 3µ
Filter Separator
Coalescing Filter
• Optimum Protection
• 99.98% Solid and Liquid Removal to 0.3µ
• Aerosol Removal
• Multi-Stage Design
• Inside-Out Filtration
Filter Arrangement
• Horizontal or Vertical?
• Filter or Coalescer?
• Footprint
• Access to Filter Elements
Combination Separators
• Filter Elements First or Last?• Filter or Coalescer?• Purpose for Mechanical Stage?
– Coalescer - Reduce Load on Filter
– Filter Sep – Remove Accumulated Liquids and Solids
Filter Elements• Pleated Filter Elements • Melt Blown Filter
Elements• Resin Bonded Filter
Elements• Coreless Filter Elements• Fiberglass Filter
Elements • Membrane Filter
Elements
Filter Separator
Coalescing Filter
•Over 4 times the filtration area•Longer element life
•Fewer element changes•More rapid liquid drainage
•Lower saturated pressure drop
Filter Access Options
• Blind Flange and Davit
• Simple
• Cheap
• Slower Access
• Good for Smaller Vessels
Filter Access Options
• Sentry• High Pressure
• Modco• Screw Type• Low-Medium Pressure
Liquid Filtration Equipment
Filtration Capabilities
ASME Code Simplex & Duplex ASME Code Series HiFlow Design
Utilizes “V” Series microglass elements Flows to 3000 GPM Carbon and Stainless Steel Standard and Engineered Designs Available
“V” Series Elements Absolute Rated Microglass Rated per ISO 16889 Heavy Duty Construction 150 PSI Collapse Rating Coreless Elements Available
Transfer Valves Patented shoe seal provides “zero
leak” performance
Zero frictional drag on change-over
Exceptionally low pressure drops
Positive mechanical lockdown
Fabricated steel construction - Carbon & Stainless Steel
Valve sizes from 1 ½” to 10”
Steam Separator
• Removes Mists and Liquids from Steam
• Low Pressure Drop
• High Efficiency
• Wide Range of Flow
Skid Mounted Systems
Modular Systems
Pressure Reduction Skid
Startup Heater
Performance Heaters
KO and Fine Filtration
Assembly – Piping and Wiring
• Piping
– ASTM B31.3
– ASTM B31.1
• Wiring
– NEC
– ATEX
– CSA
Instruments and Controls
• Level Control
– Automatic Drain Valve
• Temperature
• Pressure
• Differential Pressure
• Flow Measurement
Drying Systems
• Dryer Packages
• Molecular Sieve
– Natural gas dryers
– Liquid dryers – Propane, butane, etc
– CO2 Removal
?Typical System?• Doesn’t Exist
• Varies by Application
• Most Common
– Pressure Reduction
– Filtration
– Heating
– Flow Measurement
W o r l d C l a s s M a n u f a c t u r i n gW o r l d C l a s s M a n u f a c t u r i n g
??Questions??