Reducing Overhead Corrosion through continuous analysis & online control

  1. Nalco Champion Home
  2. 3DTCOS Reducing Overhead Corrosion

Contact Us


With unparalleled expertise and cutting-edge technology, we partner with customers to deliver world-class results and optimized operations. Contact us to learn how we can help you.


Ecolab East Africa Regional Headquarters
Tulip House, Mombasa Road
Next to Sameer Business Park
PO Box 63497-00619 Nairobi, Kenya

Please contact us at the below details and an Ecolab representative will get back to you.

Kenya: Tel: +254-20-354-624/189/191 | Email:

Uganda: Tel: +256-(0)-414-341-792 | Fax: +256-(0)-414-342-647 | Email:

Tanzania: Tel: +255-22-240-804 | Fax: +255-22-240-817 | Email:

To request additional information about Ecolab products and services just complete the form below and a representative will contact you.

For urgent requests, call customer service.

Tell Us About Yourself
Where Are you Located?
How Can We Reach You?
What Can We Help You With?

the situation

A European Refiner is aggressive in their crude selection, which poses a high degree of difficulty in controlling the overhead corrosion. This challenge demands constant attention, but due to the high degree of variability, corrosion control often struggled historically with frequent low pH excursions (pH less than 5). In response the refinery was considering upgrading the metallurgy of the overheads to address the corrosion concerns.

The automated corrosion control program improved reliability and eliminated the need for a $5M metallurgy upgrade project.

the solution

Historically, the crude unit overheads were sampled daily for pH, chlorides, iron and ammonia. To improve corrosion performance, the refinery was interested in the 3D TRASAR™ Technology for Crude Overhead Systems (3DTCOS). If successful, the refinery could avoid a capital project worth $5M to upgrade the system to a more corrosion resistant metallurgy.

the results

Starting in Monitor Mode, the “learning phase” was catching potential upsets as changes were made manually to improve performance. Progressing to Control Mode tightened corrosion performance further. The improvements realized on pH and Fe (controlling neutralizer), grew our data collection to over 17,500 points a year. The performance gain continued with chemical control.

This step-change in performance increased unit reliability and system assurance, while real-time analysis and chemistry control enhanced crude flexibility. With a higher confidence to catch upsets, the $5M metallurgy upgrade project could be avoided.