| Project Details | |
|---|---|
| Client name | Alum SA | Plant type | Alumina Refinery | Treatment started | 2011 | Boiler manufacturer | Vulcan SA | Steam temperature | 540°C | Steam production | 200t/h | Steam turbine | 12 MW |
About the project
Alum SA, the recently modernized, sole alumina refinery in Romania, with a production capacity of 600.000 tons per year, is part of one of the largest vertically integrated aluminium manufacturers’ group in Europe, ALRO, operating since 1965. ALRO GROUP mainly uses the company’s output, for aluminium production.
After the modernization, the company wanted to replace the old boiler water conditioning regime: hydrazine & ammonia, with a more safe & environmentally friendly product.
| Boiler | Projected Steam Capacity | Actual Steam Production | Pressure | Superheated Steam Temperature |
|---|---|---|---|---|
| Boiler 1 | 105t/h | 100t/h | 17 bar | 250°C |
| Boiler 2 | 120t/h | 100t/h | 100 bar | 540°C |
SCENARIO
FACTORY UPGRADE
Following a complex upgrading program, the alumina refinery needed to increase even more operational performance of their boilers by an efficient anti-corrosion anti-scale program, protect their workers and be in compliance with the European norms on environment protection regarding boiler water chemicals.
- Steam used in alumina production resulting in polluted condensate
- Low pH
- Wish to replace hydrazine
SOLUTION
TESTING FINEAMIN 90
In 2010, the alumina refinery has forwarded a request for FINEAMIN products as an environmentally compatible replacement for hydrazine.
In 2011, one-month FINEAMIN 90 test was started. The treatment proposed was based on all volatile polyamines, without oxygen scavenger. Its other alternative was 88 SCAV 25, also a polyamines mixture, but with a small content of organic oxygen scavenger – DEHA.
RESULTS
9 YEARS WITH FINEAMIN
During the test, FINEAMIN 90 proved its efficiency, without oxygen scavenger, and it has been used inside the alumina refinery for more than 9 years now without issues. By treating the boiler water with a small product quantity, the pH has been maintained within limits, risk of corrosion and scale due to polluted condensate was decreased and residual oxygen was not a reason to worry anymore.
- Environmentally compatible & no special health protection measures needed!
