Catalyst Evaluation

One of the key areas in maintaining high recovery efficiencies in a sulphur recovery or tail gas clean-up process is the activity of the catalyst systems. Sulphur Experts’ on-site testing work will definitively determine the current performance of a catalyst system and the potential need for a catalyst change. These tests are often conducted either prior to an upcoming plant turn-around to determine if a catalyst change is warranted or, after a major plant upset which has resulted in degraded performance.

The Claus catalyst evaluation report will typically include:

• catalyst activity and recommendations on required catalyst rejuvenation or replacement
• actual and recommended catalyst bed operating temperatures, sulphur dew-point temperatures and sulphur dew-point margins at current load conditions
• COS and CS2 hydrolysis rates for each Claus converter and their effect on the overall plant efficiency

The TGU catalyst evaluation report will typically include:

• catalyst activity and recommendations on required catalyst rejuvenation or replacement
• actual and recommended catalyst bed operating temperatures
• SO2, COS and CS2 conversion rates and their effect on the overall plant efficiency
• CO conversion rates and their effect on TGU emissions

Sulphur Experts’ catalyst evaluation test removes the guess-work and provides the technical support client’s require to effectively plan for catalyst replacement.