The Emergency Vent Scrubber – why it’s important to monitor
WHY THE EMERGENCY VENT SCRUBBER
Within the chemical industry, it is important to get rid of environmentally hazardous or toxic gases and vapours. And, this is where the Emergency Vent Scrubber comes into play.
Typical gasses and vapours that are removed are chlorine, bromine, phosgene, sulfur dioxide, NOx, HF and ammonia.
HOW DOES IT WORK?
The scrubbing liquid of an emergency vent scrubber circulates and is continually in contact with the gas stream to be cleaned. If toxic or environmentally hazardous chemicals are included in this stream, they will be absorbed.
SensoTech inline analyzers are often used to monitor the scrubbing liquid, which improves the system stability and quality.
The LiquiSonic® 40 analyzer allows the concentration measurement of 3-components-liquids (normally the scrubbing liquid, the concentration of NaOH and salts (NaCl and Na2CO3). This is due to the parallel detection of two physical quantities, such as sonic velocity and conductivity. The process is very sensitive. If the NaOH content is under limit, it must be re-dosed. In case of too high salt content, the salt must be removed from the circulation stream, to prevent crystallization in the system and blocked nozzles.
WHAT IS THE CUSTOMER VALUE COMPONENT?
Because Sensotech’s LiquiSonic® analyzer provides a precise inline concentration measurement with real-time monitoring, they are able to provide true accuracy.
In addition, because of the automatic control, a sufficient level of scrubbing liquid is kept, which then keeps the scrubber at its perfect absorption efficiency.
There is a substantial reduction in labour costs, time saving of at least 1 day, and of course a saving on material use.
Installation is a breeze.
The LiquiSonic® immersion sensor is easily installed directly into pipelines. A typical installation point, combined with a conductivity meter, are DN 80 pipelines from the scrubber to the regeneration tank.
The robust sensor construction and the optional special materials, like HC2000, promote long process life.
The LiquiSonic® controller 40 is connected to the LiquiSonic® ultrasonic sensor as well as the device for the second physical value (conductivity meter). The controller displays NaOH concentration and salt content.
For more on the Emergency Vent Scrubbers from #Sensotech, please make contact with us.