Ammonia Conditioning
An anhydrous ammonia injection system is designed and supplied based
on in-house technology developed by Chemithon. The equipment consists
of anhydrous ammonia storage and vaporization equipment, ammonia metering,
an ammonia/air mixer, and ammonia injectors. Generally to provide distribution
the ammonia vapor is mixed with air to a concentration of less than 10%.
The critical requirements required from power plants for
ammonia FGC to perform are as follows:
- The ash has to be acidic with a pH value less than 7
- The combined silica and alumina content in the ash should
exceed 85%.
- ESP should be in sound electrical and mechanical condition.
- Minimum secondary voltage of 25kV and current 200 mA in each
field, with minimum 95% of the corona power specified by the
ESP supplier and all fields in service.
- Ash handling system functioning properly and evacuating
ash continuously from all the hoppers.
- Treatment time as per ESP Design parameter specified by ESP
supplier.
The Ammonia Flue Gas Conditioning system has the following advantages:
- Agglomerates fine particulate in the gas stream, which produces
an attendant reduction in opacity.
- More adhesive fly ash layers collected on the precipitator
plates reducing rapping losses.
- Increases space charge.
- Eliminates “blue” plume (SO3 slip).
- Lowers acid dew point.
- Reduces rapper re-entrainment and emissions
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KTPS Unit No. 2
KTPS - Ammonia Storage Tank |
Click here for a list
of Chemithon's Ammonia Conditioning Plant installations
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