Optimise Combustion Efficiency


Burn low quality heavy fuel oils


In power generation SO3 measurements provide data to allow the operator to burn fuel in the most efficient way to minimize corrosion of the plant and limit acid discharges to the environment. Monitoring of SO3 is also important where it is formed as a by-product, e.g. in De-NOx systems.

In processes where H2SO4 is used or ore with large amounts of sulphur is processed, the SO3 monitor can measure SO4 2- ions and show emission as mg/Nm3 or ppm. 

The Pentol SO3 monitor has been designed to meet a wide range of measuring requirements.
 • 1 - 200 ppm SO3
 • Flue gas temperature up to 400°C
   (up to 550°C with special probes)
 • The instrument is portable and suitable for long- 
   and short-term measurements 
 • The unit is auto-calibrating in a user defined cycle
 • An optional RS232 connector allows to log 
   measurements on a laptop

The Pentol SO3 monitor is based on a wet-chemical process.

The gas sample is measured by means of a heated probe. In the probe head, the sample is cooled down and diluted in a mixture of isopropanol and water. The SO3 condenses and reacts to sulfuric acid in liquid phase, eliminating all problems related due to insufficient heating known from manual measurements.

The sample is then transported to the instrument by the peristaltic pump and reacts with bariumchloranilate, colouring the sample according to the SO3 concentration. The concentration is then measured with a photometer that can be calibrated automatically.

This procedure allows to measure repeatedly and very accurate directly in the plant or in laboratories.

SO3 Analyzer


How much SO3 do you generate?

Pentols portable SO3-analyzer allows the on-line monitoring and recording of emission:  
- limit acid discharges to the environment
- burn fuel in the most efficient way to minimise corrosion of the plant 
Read our brochure SO3 Monitor. Learn more about the wide range of measuring possibilities

Would it work for you?


Ready to see for yourself?

Do you have questions? — We have answers
+49 (0)7624 300-0

What can be optimized?

Things we need to know for processing.

How continuous SO3 Monitoring can reduce sorbent consumption

Read article in PowerMag

Pentol products

Water-in-Oil Emulsion Technology


  • Optimise Combustion Efficiency
  • Burn low quality heavy fuel oils

Additive for Combustion Optimisation


  • Eliminate Corrosion
  • Reduce Fuel Consumption

Anti Slagging Coal Additive  

PentoMag® 2550

  • Clean combustion chamber and super heater
  • Increase heat transfer efficiency

Diesel Engine Additive

PentoMag® 4400

  • Optimise Combustion Efficiency
  • Reduce Engine Fouling

Increase ESP efficiency

Flue Gas Conditioning

  • Reduce solid emission, reduce dust load on your FGD plant
  • Increase whiteness of the gypsum

Industrial Applications and Power Plants

SO3 Analyser

  • Continuous SO3 Measurement
  • Online Monitoring

Equipment and Service 

SO3 Generator

  • Generate exact ammounts SO3/air mixture 
  • or other gases like CO2, NOx for laboratory use

Development and Support

Magnesium Oxide

  • PENTOL is specialized in manufacturing
  • magnesium oxide with hight reactivity