Engineering California RFG projects
- Fluor Daniel, Inc., Irvine, CA (United States)
- Fluor Daniel, Inc., Haarlem (Netherlands)
The California Air Resources Board (CARB) has imposed regulations for reformulated gasoline, which are planned to go into effect March 1996. The CARB specifications require significant reductions in sulfur, olefins and distillation points in addition to the EPA targets of RVP, aromatics, and benzene. CARB offers two options for meeting the recipe targets. The first option is simply not to exceed any of the Flat limits for each gasoline blend. The second option is to meet the average specification over a 90-day period with no specific blend exceeding the Cap limits. This option allows refiners to exceed the Flat limits for some individual blends and still meet the average compliance values. Recently, in response to the refinery industry, CARB has developed their version of an emissions model called the CARB Predictive Model. The model allows trade-offs between the target variables, similar to EPA`s complex model, but it is anchored by the average recipe values. This gives the refiner some flexibility to evaluate trade-offs between units with excess capacity and those which will be bottlenecks, thereby minimizing the investment to meet CARB requirements. For instance, an increase in hydrotreating capacity for FCC gasoline could reduce sulfur and olefins below the target and result in higher T90 or aromatic gasoline recipes. Of course, since the CARB recipe already calls for very low sulfur and olefin levels to begin with, the amount of added CARB gasoline production through trade-offs within the model will be limited. The paper discusses the use of the CARB Predictive Model.
- OSTI ID:
- 93391
- Report Number(s):
- CONF-9503162-; TRN: IM9537%%435
- Resource Relation:
- Conference: 93. annual meeting of the National Petroleum Refiners Association (NPRA), San Francisco, CA (United States), 19-21 Mar 1995; Other Information: PBD: 1995
- Country of Publication:
- United States
- Language:
- English
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