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18 Cards in this Set
- Front
- Back
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Mercury Reduction
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Injecting power activated carbon (PAC) into gas stream.
Carbon attaches itself to the mercury and reaction products collected in fabric filter |
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What is Lime
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is slaked with water and the resulting slurry is directed to a lime slurry storage tank.
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Spray Dryer Absorber (SDA)
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The Spray Dryer Absorber provides the system with the means for effectively removing sulfur dioxide (SO2) from the flue gas stream by mixing a lime slurry solution with the flue gas. The reacted particulate byproduct is removed in the downstream fabric filter.
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SH2 outlet temp trip
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greater than 1000 F
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SH2 inlet temperature trip
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greater than 765 F
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Drum pressure trip greater than
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1500 psig
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- Drum level less than
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-15 inches
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- Flue gas inlet temperature (on HRSG, not Crossover duct) Trip
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greater than 2400 F
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-Flue Gas evaporator 1 temperature trip
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greater than 2200 F
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Baghouse Bypass:
-Inlet gas temperature |
385 F
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Baghouse Bypass
Inlet gas temperature |
370F for 10 minutes
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-Low outlet temperature for Baghouse Trip
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235F for 30 minutes
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Baghouse Bypass:
Trip |
Less than 5 compartments in service
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Baghouse trip
Differential pressure across baghouse greater than |
15” wc
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Atomizers trip:
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Cooling water loss for 10 minutes
What is the trip point for high cooling water temp? Randy incated a temp of 90 was a trip. Is this accurate? -Air/lube pressure > 10 psi for 10 minutes -Position sensor not in place at start for 1 second Vibrations exceeds 1.5”/second -Upper bearing temperature exceeds 210F -Lower bearing temperature exceeds 210F -Cooling water temperature below 60F -Baghouse low temperature of 235F atomizers stop spraying slurry and dilution water |
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ID Fans: trip
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- Low oil pressure of 0.5 psi
- Front & Rear motor bearings trip at 212 F. Front & Rear fan bearings trip at 188 F. - Fan vibration > 9 mm/sec |
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Mechanical Exhauster: Trip
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Motor amp greater than 50.
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Lime Slurry: Trip
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Lime slurry storage tank low low level of 11% stops slurry flow.
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