Pentol - Power Plant SO3 Monitoring System
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.
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Products Descriptions
The Pentol SO3 monitor has been designed to meet a wide range of measuring requirements.
- 1 - 100 ppm SO3
- Flue gas temperature up to 350°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
Technology
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.
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