Case Study: Hydrogen Sulphide and Mercaptan Destruction Within Petrochemical Applications

Hydrogen Sulphide and Mercaptans present two key issues – (1) Odour and (2) Site Personnel Safety.

Catalytic Chlorine Dioxide has been used to treat a representative 150m³ per hour effluent stream containing Hydrogen Sulphide in a range of 4.0ppm w/v to 13.5ppm w/v and Mercaptans of 0.3ppm w/v Methyl, 0.19ppm w/v Ethyl and 0.12ppm w/v Propyl.

The levels of Catalytic Chlorine Dioxide required ranged from 30 to 50ppm in the aqueous phase.

Chlorine Dioxide was generated on-site using the very latest Catalytic technology combined with advanced control instrumentation as part of a Clearwater Technology turnkey project.

The result showed total Hydrogen Sulphide and Mercaptan destruction together with a clarification of the effluent stream.

Catalytic Chlorine Dioxide can also be employed in the recovery of “soured” wells; odour and atmospheric control of oil storage facilities; Odour outfall from tanker loading stations.