Every day the global emissions standards are becoming more and more stringent. These higher standards are dependent on cleaner fuels and the primary initiative to date has been the reduction of sulfur impurities. However these sulfur impurities in the fuel were providing some of the necessary lubrication properties required by engine fuel injection systems, and protecting them from wear. One of the methods to produce lube oil additives is via batch reactions that use elemental sulfur as a reactant and H2S is produced as a byproduct. Merichem’s LO CAT® technology has been part of the lube oil production industry for almost 15 years. The first lube oil additive facility with a LO CAT® unit in its processing scheme came on line 1996 followed by the second in 1998. During the batch reaction cycle at these facilities H2S concentrations in the reactor off gas range from 0 to approximately 100 percent.

Merichem naphthenic acids are used to produce Zinc and Bismuth naphthenates for use as lubricant additives in oils and EP grease formulations.