Model 440 Sulphuric Acid Dewpoint Temperature Monitor

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Continuous Sulphuric Acid Dewpoint Temperature Monitoring System

In order to maintain the operating efficiency of coal or oil-fired boilers, it is important to know that the temperature of the exhaust gas is above the sulphuric acid dewpoint temperature (ADT). If it is much higher than the sulphuric acid dewpoint temperature, then energy is wasted heating the gas and efficiency drops. Operating the boiler at temperatures below the sulphuric acid dewpoint temperature will result in the formation of sulphuric acid inside the boiler and particularly on the 'colder' parts of the plant.

Model 440 - Continuous Monitoring System

Key Features	Key Benefits
Continuous measurement of Acid Dewpoint Temperature Automatic Detector Cleaning System Electronic Control Unit Measures Sulphuric Acid Dewpoint Temperature and Rate of Acid Build-up Calculates Minimum Metal Temperature Automatic or Manual Operation Control Unit Simple to install, reliable operation Current loop outputs	Process Control Manage the use of high cost fuel additives such as MgO Monitor SO3 slip within an ESP to improve ash collection efficiency whilst minimising acid aerosol emissions Thermal Efficiency Maximise overall boiler efficiency Reduce maintenance caused by cold-end corrosion in maintaining the exit gas above the dewpoint temperature Emissions Control Monitor acid aerosol emissions (condensables) Monitor nad reduce acid smut emissions

Key Features

Key Benefits

Continuous measurement of Acid Dewpoint Temperature
Automatic Detector Cleaning System
Electronic Control Unit
Measures Sulphuric Acid Dewpoint Temperature and Rate of Acid Build-up
Calculates Minimum Metal Temperature
Automatic or Manual Operation Control Unit
Simple to install, reliable operation
Current loop outputs

Process Control

Manage the use of high cost fuel additives such as MgO
Monitor SO3 slip within an ESP to improve ash collection efficiency whilst minimising acid aerosol emissions

Thermal Efficiency

Maximise overall boiler efficiency
Reduce maintenance caused by cold-end corrosion in maintaining the exit gas above the dewpoint temperature

Emissions Control

Monitor acid aerosol emissions (condensables)
Monitor nad reduce acid smut emissions

Gallery

Please click the image thumbnail for larger image

	Polluting chimney
	Blue and white smoke is evidence of SO3 present in the stack gas as acid

Please click the image thumbnail for larger image

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