You are currently viewing: Literature



Opportunity crudes - chemical tools solve intractable processing problems

A 100,000 BPD refinery originally designed for lighter crudes struggled with serious desalter performance problems and unacceptably low throughput when processing blends of relatively heavy, acidic feedstocks, including Dar, Ratawi, Eocene, Duri, Stybarrow and Enfield. When a costly combination of five chemicals from a competitor failed to solve the problem, the refinery consulted a global technical solution provider who reported that the problems were caused by hardware constraints and chemical treatment would be ineffective.

In an effort to avoid the substantial cost of hardware upgrades, the refinery turned to Dorf Ketal for a solution. Samples were collected for analysis and the refinery established KPIs: Improve desalting and dehydration by 10 to 30% in a refinery the experts said was “hardware-limited.”

Although the refinery was being pushed beyond as-designed performance levels, desalter adequacy tests (DAT) in Dorf Ketal labs indicated that advanced-technology Dorf Ketal additives could accomplish the objective, and technicians began collecting baseline data. Because refinery crude blends varied, data were collected for Jan-Feb and Jun-Jul to ensure valid comparisons.

The trial replaced the existing treatment program with a Dorf Ketal demulsifier and solids wetting agent in the desalter, an antifoulant in the hot preheat train and a corrosion Inhibitor and neutralizing amine in the atmospheric column overhead. Based on DAT data, Dorf Ketal also recommended adjustments in mix-valve settings, crude processing rates and wash water rates.

Desalting and dehydration efficiencies in the desalter improved immediately. BS&W dropped from 0.6 percent under the previous program to just 0.2 percent by volume.

Other Literature

Opportunity crudes - chemical tools solve intractable processing problems

A 100,000 BPD refinery originally designed for lighter crudes struggled with serious desalter performance problems and unacceptably low throughput when processing blends of relatively heavy, acidic feedstocks, including Dar, Ratawi, Eocene, Duri, Stybarrow and Enfield. When a costly combination of five ...


Innovative, cost-effective crude treatment programs

We Treat Refineries, Not Symptoms. We approach every treatment challenge from three perspectives: operational, chemical and mechanical. Our technicians and scientists are supported by modern laboratories and the latest analytical tools, including portable electric desalters for emulsion-breaker screening ...