Total sulfur Monitoring in Liquefied Petroleum Liquids

 

Total sulfur Monitoring in Liquefied Petroleum Liquids 

 

Liquified petroleum gas is one of the key products of any refinery. LPG is usually sold to a processing facility to be further refined. This refinement often requires the use of expensive catalysts.

 

Sulfur compounds, naturally found in petroleum products, act as poisons to noble metal catalysts used in the process employed in converting feed stock to useable intermediate and end products. Because of this sulfur compounds are removed entirely from the LPG at a point prior to a vulnerable process or prior to sale to a processor or end-user. Analyses are made at a point directly downstream from the sulfur removal step and are used as a check on sulfur scrubbing efficiency. Hydrotreatment and the use of scrubbing with solids or liquid materials will remove sulfur compounds   

 

Scrubber removal materials have a tremendous affinity for absorbing many different sulfur compounds but, eventually reaches a saturation point, when the reactivity drops and no more sulfur can be absorbed. When the saturation point is achieved the scrubber must be regenerated. Usually scrubber beds are operated in parallel, enabling one bed to be regenerated while the other remains on-line. Without a sensitive, specific, on-line analyzer, the beds are regenerated much more frequently. The consequences of a down or ineffective scrubber can result in product waste, production downtime, spent scrubber material and poisoned noble metal catalyst.  Bringing in a CI Analytics Total Sulfur Analyzer can virtually eliminate these losses.