LO-CAT unit serves dual purpose at Lubrizol facility
The LO-CAT II H2S oxidation system installed at Lubrizol France's Le Harve facility sweetens H2S emissions and recycles elemental sulfur for use in the facility's batch reactors. The unit was selected for its ability to handle the facility's variation in H2S concentrations, which range from 0 to nearly 100 percent in one 8-hour batch reaction cycle. Through the sour gas treatment, quality sulfur is produced and used as feed stock in the production of lube oil additive. The unit has reduced H2S emissions to below 10ppmv as well. Sulfur produced by the LO-CAT II unit continues to meet Lubrizol's requirements and reduce production costs.
At the LeHarve installation, the maximum instantaneous H2S rate is 10 metric tons/day (MT/D) with an average daily H2S loading equivalent to 3 metric tons/day. During each cycle of two batches, approximately 3,000 kilograms (kg) of sulfur is produced and recycled from the LO-CAT II unit and returned to the batch processes.