Monitoring scrubbers!

Environmentally harmful, corrosive or toxic gases are used in a large number of industrial processes. To protect people and the environment, the treatment of these gases is subject to strict regulations, in particular which purification criteria a gas scrubber must achieve.

Ensuring the complete conversion of toxic components while using scrubbing liquid efficiently is often a challenge for process engineers. The effectiveness of a gas scrubber depends on the exact dosage of the scrubbing liquid (for example: caustic soda).

To enable an exact determination of the concentration of the scrubbing liquid and the salts, two physical measurands have to be combined. Conventional measuring methods often map only one measurand and neglect the influence of the resulting salts. In addition, in many cases the process is monitored in a very time-consuming manner by sampling and titration.

The LiquiSonic® process measuring system analyzes from Sensotech both concentrations, that of the washing liquid and that of the salt, in real time. This allows exact dosing and adjustment of the washing liquid. The washing process thus becomes much more efficient and safer. Thanks to the explosion-proof inline measuring system, no intervention in the process is necessary. The exact concentration of the scrubbing liquid and the salt content are available at all times. Critical situations in which toxic and environmentally harmful gases could escape can be detected at an early stage by LiquiSonic® and countermeasures can be initiated in good time.

The maintenance-free measuring devices from SensoTech GmbH are very durable and can be easily integrated into the process control system. The automated documentation and various diagnostic tools provide a comprehensive analysis of the process and can be used for further improvements. LiquiSonic® reduces hazards for the environment and employees and ensures efficient, time-saving process analysis.

@PresseBox #SensoTech #PAuto 

Long life pH sensor available

Rugged Rosemount® Analytical RB Sensor resists poisoning in scrubber applications

Emerson Process Management has added a new rugged pH sensor line to the company’s popular pH product families. The new Rosemount® Analytical Model RB Sensor is designed for optimum sensor life in demanding scrubber applications.

pH sensors are most vulnerable to failure due to poisoning of the reference junction. The new RB sensor features a proprietary multi-junction that hinders reference poisoning. This design is particularly successful against the aggressive sulphides found in scrubbers. The unique multi-junction reference chamber of the RB extends survivability. In addition, the sensor is built of chemically resistant Kynar adding to its long life.

“Now, our customers have an exceptional range of long-life pH sensors from which to choose,” said Linda Meyers, senior product manager. “Our PERpH-X™ line of sensors allows extended operation in high heat and pressure. The popular TUpH™ family resists coating in applications with high suspended solids. And now the RB fits nicely into the line when chemical resistance is the primary challenge.”

Instead of replacing the entire sensor, the Model RB Sensor can be simply reassembled inside its titanium sheath high-pressure body, reducing costs for replacement and shipping.

The sensor allows for optional installation methods including in-line, submerged or ball-valve insertion.