The solution was to install an additional adsorption filter with a special grade adsorbent capable of removing critical impurities to the same extent as the existing scrubber. The filter was designed to be regenerable to avoid frequent replacement of the filling and being fully automatically operated. The new upgrade involves no maintenance on a weekly basis.
The new filter was fully integrated into the existing controls and HMI of the plant for easy access to the operating state and data for the operator.
The filter-upgrade implemented has worked perfectly and the operators, who continuously monitor the CO2 product quality by a sophisticated inline analyzer system (Carboscan 150), capable of detecting a broad array of impurities, are reporting that the CO2 quality since the installation of the filter has even improved.