About acid purification
Luova Acid Purification (L-APU)
In the acid pickling of steel or chemical milling of Titanium, metals are continuously dissolved in the pickling solution. If the dissolved metals reach a critical level, problems in the process start to occur, such as metal salt precipitation which forms sludge.
The Luova Acid Purification Unit removes dissolved metals from the pickling acid. The dissolved metals are fed to waste or neutralization plant and the pickling acid is recovered to the pickling bath.
About acid purification
In most ion exchange operations, an ion in solution is replaced with an ion from the resin and the former solution ion remains with the resin.
In contrast, ion retardation chromatography uses the ion exchange resin as an adsorption or separation media, which provides an ionic environment, allowing two or more solutes in the feed stream to be separated.
In 1963 Melvin J. Hatch and John A. Dillon discovered and reported that Acid Retardation is a physical method for separation of strong acids from their salts. Acid retardation is defined by them, since this kind of separation is based on a preferential absorption of strong acids, which causes the movement of the acids on the bed to be retarded – i.e., slowed down – relative to the movement of the salt.
All APU systems from Luova is based upon this great principle.
Economically advantages
- - Reduce consumption of raw acid
- - Reduce chemicals used in the neutralization plant
- - Reduce solid waste sludge to landfill
Productivity
- - Maintain consistent dissolved metal concentration
- - Increase productivity due to less frequent dumping
- - Less down time for sludge removal in the pickling tanks.
Surface quality
- - Maintaining consistent pickling parameters produces a more consistent surface
- - Reduce scrap and re-process due to poor surface quality
Environmental impact
- - Reduce nitrates emission to environment
- - Reduce purchase of raw acid
- - Reduce chemicals used in the neutralization plant
- - Reduce Hauling to landfill
Improved safety
- - Avoiding the dangerous work of manually cleaning the pickling tanks
All systems delivered have the advantage of Luova's excellent maintenance program. All spare parts are kept in stock for immediate delivery.
Our Products
The Mini L-APU
Compact, affordable and efficient The compact Mini L-APU offers a capacity of 200-250 l/hr. The metal removal
The L-APU
The expandable system The modular L-APU offers a capacity of 800 l/hr for each module. The modules
The L-APU XXL
The heavy-duty system With high capacity of 2000 l/h for each module. The metal removal is up
The PENTA filter
The sludge removal and filtering system In the manufacturing process of stainless steel there it produces an
Micro Filtration
Micro Filtration and Hydro Cyclones The Micro Filtration system in are working with two parallel techniques in
L-AAF
Luova Automated Acid Filter The L-AAF is using the same FUNDABAC® technology as the PENTA. It is
Acid Controller AC 2000
Acid testing made easy It is efficient, accurate and easy to use. AC 2000 reduces the consumption