The process control of a sulfuric acid plant needs good and reliable detection of gas phase SO2. To measure SO2 can be a challenge due to the corrosive environment and high concentration of SO2. Several places in the process needs to be monitored and to transport the sample gas is difficult. A large dynamic range is needed as the SO2 concentration can vary between 15% volume and a few mg/m3.Most of the systems need high maintenance and not reliable at all.
The OPSIS DOAS system is different and provides sulfuric acid plants with an accurate analyser that can measure in temperatures up to 1000°C. The OPSIS DOAS system is a non-contact method, using an optical measurement path that operates across a duct. The optical light is transported in an optical fibre to the analyser.
APPROVALS:
TUV QAL1, MCERTS
INDIAN USER::
Commissioned the first SO2 analyser in 0-20% range in Sulfuric Acid bed for process Control in IFFCO -Paradeep Odisha on May 2022. Due to excellent performance we got another Order from them. SO2 analyser in 0-5000 ppm range ( User selectable) has been commissioned over 350 systems in India and they are working fine even after 15 years of operation.
