Sulphuric Acid Production

The process control of a sulphuric acid plant needs good and reliable detection of gas phase SO2. To measure SO2 is a challenge due to the corrosive environment and high concentration of SO2. Several places in the process need 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 systems installed need a lot of maintenance, sometimes as often as every day.

The OPSIS DOAS system is different and provides sulphuric acid plants with an accurate analyser that can measure in temperatures up to 1000°C and with a maximum pressure of 1 Bar (G). The system operates with a minimum of maintenance.

A typical service interval with an OPSIS system is 3 to 6 months. 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 and one analyser can operate several paths. Besides the measurements of SO2, additional gases such as SO3, H2O and O2 can be measured.

All Opsis instruments are sold with 1 years parts warranty as STANDARD.

The warranty can, at additional cost, be extended for total peace of mind. Please call to discuss options for this.

Opsis instruments require periodic service and maintenance to both satisfy the requirements of the warranty and to ensure that the highest possible data capture rates are maintained.

Enviro Technology has a large team of in-house and field based service engineers who regularly receive “factory training” and can provide the very best levels of service and support.

Enviro Technology and Opsis recommend that the Opsis DOAS System for Sulphuric Acid Production is serviced every 6 months of continuous operation.

A wide range of servicing options are available and can include:

- Pre-scheduled on-site planned maintenance (every 6 months).

- Emergency on-site call-out within agreed timescales (i.e. 48 hours).

- Supply of consumable items (i.e. sample inlet filters).

- Supply of calibration gases and permeation tubes.

- Supply of permeation tube calibrators and zero air generators

- Remote analyser “health-checks” and diagnostics.

- Return-to-base servicing options.

- Local site operation services.

- Data collection and data management services.

Please contact either our sales or customer services teams to request a quotation for on going servicing and maintenance on this analyser.

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