Stricter environmental regulation leads to products with lower sulphur content. As a result Claus plant loadings with hydrogen sulphide and ammonia are increasing and the Claus plant may become a bottleneck.
The problem can be overcome by oxygen enrichment of the combustion air. This increases the capacity significantly. A new type of burner ensures excellent mixing of hydrogen sulphide and oxygen enriched air over a wide load range.
Benefits of oxygen enrichment:
Increased Claus plant capacity
Increased productivity without changing the pressure drop
More effective treatment of ammonia containing feeds
Less effort for tail gas purification (reduced nitrogen flow).
